[Fix] (DirectGLES): lower gl_ClipDistance for Adreno's ESSL compiler - shadow the builtin in a Private array with constant-index flushes before EmitVertex/return, loop-copy gl_in clip distances through dynamic indices (whole-array reads segfault the Qualcomm compiler, constant-index element reads miscompile), strip the SPIRV-Cross redeclaration Adreno rejects, and split const struct-array LUT initializers so they stay dynamically indexable; quirk-gated to Qualcomm with MOBILEGL_QUIRK_CLIP_DISTANCE override

.github/scripts/fetch-trace-fixture-lfs.sh

@@ -201,11 +201,6 @@ fetch_file_from_mirror() {
   return 1
 }
 
-# Files no mirror could serve, even after retrying every mirror. Only these fall
-# back to Git LFS, so a mirror that served the rest of the case still spares
-# GitHub the bandwidth for those files.
-mirror_failures=()
-
 fetch_from_mirror() {
   mkdir -p "${fixture_dir}"
   for file in "${files[@]}"; do
@@ -224,19 +219,17 @@ fetch_from_mirror() {
       echo "Mirror did not serve ${name}; trying the next mirror" >&2
     done
     if [ "${fetched}" -ne 1 ]; then
-      mirror_failures+=("${file}")
+      return 1
     fi
   done
-  [ "${#mirror_failures[@]}" -eq 0 ]
 }
 
 if fetch_from_mirror; then
   echo "Fetched trace fixture files for ${case_name} from mirror: ${include}"
 else
-  fallback_include="$(IFS=,; echo "${mirror_failures[*]}")"
-  echo "All mirrors failed for ${#mirror_failures[@]} of ${#files[@]} file(s) of ${case_name}; falling back to Git LFS: ${fallback_include}"
+  echo "All mirrors failed for ${case_name}; falling back to Git LFS: ${include}"
   git lfs install --local
-  git lfs pull --include="${fallback_include}" --exclude=""
+  git lfs pull --include="${include}" --exclude=""
 fi
 
 for file in "${files[@]}"; do

.gitignore

@@ -25,5 +25,3 @@ MobileGL/MG*/cmake-build*
 /android-plugin/app/src/trace/jniLibs
 /android-plugin/local.properties
 tools/trace_replay/work/
-__pycache__/
-*.py[cod]

CMakeLists.txt

@@ -190,12 +190,13 @@ set(SOURCE_FILES
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/DecomposeWorkgroupVec3Pass.cpp
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/DecoratePositionInvariantPass.cpp
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/LowerDrawParametersPass.cpp
-    MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/PackDoubleVertexInputsPass.cpp
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/RebaseInstanceIndexPass.cpp
-    MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/NormalizeRectCoordinatesPass.cpp
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/StripUboMemberRelaxedPrecisionPass.cpp
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/StripNoPerspectivePass.cpp
     MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/EmulateNoPerspectivePass.cpp
+    MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/FoldConstOffsetFor1DFetchPass.cpp
+    MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/LowerClipDistanceForEsslPass.cpp
+    MobileGL/MG_Util/ShaderTranspiler/SpirvPasses/DefeatConstStructArrayLutPass.cpp
 
     MobileGL/MG_Util/BackendLoaders/OpenGL/Loader.cpp
     MobileGL/MG_Util/BackendLoaders/Vulkan/Loader.cpp
@@ -219,7 +220,6 @@ set(SOURCE_FILES
     MobileGL/MG_Impl/GLImpl/Framebuffer/Validators.cpp
     MobileGL/MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.cpp
     MobileGL/MG_Impl/GLImpl/Program/GL_Program.cpp
-    MobileGL/MG_Impl/GLImpl/Program/GL_ProgramPipeline.cpp
     MobileGL/MG_Impl/GLImpl/Texture/GL_Texture.cpp
     MobileGL/MG_Impl/GLImpl/Texture/Validators.cpp
     MobileGL/MG_Impl/GLImpl/Texture/ProxyTexture.cpp
@@ -458,21 +458,8 @@ if (ANDROID)
 endif()
 
 if (APPLE AND NOT MOBILEGL_IOS)
-    # MobileGL statically embeds glslang, SPIRV-Tools, and SPIRV-Cross. When
-    # this dylib is injected with DYLD_INSERT_LIBRARIES, exporting those C++
-    # symbols interposes incompatible copies embedded by host libraries such
-    # as shaderc. Keep only the public GL/EGL/CGL loader surface globally
-    # visible; GetProcAddress can still return pointers to hidden internals.
-    set(MOBILEGL_MACOS_EXPORTED_SYMBOLS
-        "${CMAKE_CURRENT_SOURCE_DIR}/MobileGL/MG_Impl/DyldInterpose/ExportedSymbols.txt")
-    target_link_options(${CMAKE_PROJECT_NAME} PRIVATE
-        "LINKER:-exported_symbols_list,${MOBILEGL_MACOS_EXPORTED_SYMBOLS}")
-    set_property(TARGET ${CMAKE_PROJECT_NAME} APPEND PROPERTY
-        LINK_DEPENDS "${MOBILEGL_MACOS_EXPORTED_SYMBOLS}")
-
     target_link_libraries(${CMAKE_PROJECT_NAME} PUBLIC
         "-framework Cocoa"
-        "-framework CoreVideo"
         "-framework QuartzCore"
         "-framework Foundation"
         "-framework OpenGL"
@@ -480,7 +467,6 @@ if (APPLE AND NOT MOBILEGL_IOS)
     if(TARGET ${CMAKE_PROJECT_NAME}_s)
         target_link_libraries(${CMAKE_PROJECT_NAME}_s PUBLIC
             "-framework Cocoa"
-            "-framework CoreVideo"
             "-framework QuartzCore"
             "-framework Foundation"
             "-framework OpenGL"

MobileGL/Config.h

@@ -14,7 +14,7 @@ namespace MobileGL::MG_Config {
     inline const String ProjectName = "MobileGL";
     inline const String CoreName = "MobileGL Core";
     inline const String CoreVendor = "MobileGL-Dev (BZLZHH, Swung0x48, Tungsten)";
-    inline const Version CoreVersion = {26, 8, 0, "-dev", VersionType::Development};
+    inline const Version CoreVersion = {26, 7, 0, "-dev", VersionType::Development};
     inline const VersionStringFormatAttrib DefaultVersionStringFormatAttrib = {2, 2, 0, true, true};
     inline const Uint64 CacheVersion = 0;
 
@@ -80,6 +80,11 @@ namespace MobileGL::MG_Config {
         // rewrites the recognized workgroup prefix-scan template on Qualcomm devices with
         // subgroups wider than 32 lanes (see ShaderSourceProcessor's quirk registry).
         QuirkOverride SubgroupPrefixScanQuirk = QuirkOverride::Auto;
+        // MOBILEGL_QUIRK_CLIP_DISTANCE: overrides the DirectGLES quirk that lowers
+        // gl_ClipDistance for Adreno's ESSL compiler (shadow Private arrays with
+        // constant-index builtin flushes, dynamic-index gl_in copy loop, redeclaration
+        // strip, and const struct-array LUT splitting). Auto detects Qualcomm.
+        QuirkOverride ClipDistanceQuirk = QuirkOverride::Auto;
         // MOBILEGL_MAGMA_DISABLE_BLENDED_DEPTH_WRITE: overrides the DirectVulkan quirk that
         // strips depth writes from accumulation-blended pipelines (MIN/MAX or additive
         // ONE+ONE - the multi-pass depth-equality signature) on drivers without

MobileGL/ConfigLoader.cpp

@@ -135,6 +135,7 @@ namespace MobileGL::MG_ConfigLoader {
         features.DisableUboRing = QueryEnvFlag("MOBILEGL_DISABLE_UBO_RING");
         features.RelaxedSemantics = QueryEnvFlag("MOBILEGL_RELAXED_SEMANTICS");
         features.SubgroupPrefixScanQuirk = QueryEnvQuirkOverride("MOBILEGL_QUIRK_SUBGROUP_PREFIX_SCAN");
+        features.ClipDistanceQuirk = QueryEnvQuirkOverride("MOBILEGL_QUIRK_CLIP_DISTANCE");
         features.MagmaDisableBlendedDepthWriteQuirk =
             QueryEnvQuirkOverride("MOBILEGL_MAGMA_DISABLE_BLENDED_DEPTH_WRITE");
         features.DisableRobustBufferAccess = QueryEnvFlag("MOBILEGL_DISABLE_ROBUST_BUFFER_ACCESS");

MobileGL/Init.cpp

@@ -14,7 +14,6 @@
 #include <MG_State/EGLState/Core.h>
 #include <MG_Impl/GLImpl/Texture/ProxyTexture.h>
 #include <MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.h>
-#include <MG_Impl/GLImpl/Sync/GL_Sync.h>
 
 #include <atomic>
 #include <mutex>
@@ -38,12 +37,6 @@ namespace MobileGL {
                 MGLOG_I("MobileGL closing...");
             }
             glslang::FinalizeProcess();
-            // GL syncs die with their contexts, and every context is gone by the
-            // time full teardown runs: drain the live-sync registry while the
-            // backend function table can still release the backend handles (and
-            // before a re-initialized library could pair them with the wrong
-            // backend's DeleteSync).
-            MG_Impl::GLImpl::DestroyAllSyncObjects();
             MG_Backend::pActiveBackendObject.reset();
             MG_State::pGLContext.reset();
             MG_State::pEGLContext.reset();
@@ -107,11 +100,9 @@ namespace MobileGL {
     // (EGL/WGL/CGL): initialization happens lazily on the first entry point
     // via EnsureInitialized(), and full teardown happens deterministically
     // when the last EGL display is terminated with nothing current (EGLImpl
-    // calls Destroy()). There is intentionally no backend-initializing static
-    // constructor, no static destructor, and no DllMain: the global singletons
-    // use leak-at-exit storage (see GlobalObjects.cpp), so a process that exits
+    // calls Destroy()). There is intentionally no static constructor, no
+    // static destructor, and no DllMain: the global singletons use
+    // leak-at-exit storage (see GlobalObjects.cpp), so a process that exits
     // without eglTerminate simply leaks them to the OS instead of running
-    // backend destructors during static teardown. macOS has a lightweight
-    // dyld constructor that installs NSOpenGL dispatch hooks only; full backend
-    // initialization still enters here from the first hooked CGL context.
+    // backend destructors during static teardown.
 } // namespace MobileGL

MobileGL/Init.h

@@ -13,10 +13,9 @@ namespace MobileGL {
     void Initialize();
     // Thread-safe, idempotent, and re-entrant wrapper around Initialize().
     // Host layers (EGL/WGL/CGL entry points) call this lazily on first use so
-    // full backend initialization never depends on ELF/DLL static constructors,
-    // and so a fresh init can follow a full Destroy() (e.g. after the last
-    // eglTerminate). The macOS dyld bootstrap installs only lightweight
-    // NSOpenGL method hooks.
+    // MobileGL's lifecycle never depends on ELF/DLL static constructors, and
+    // so a fresh init can follow a full Destroy() (e.g. after the last
+    // eglTerminate).
     void EnsureInitialized();
     void Destroy();
 

MobileGL/MG_Backend/BackendObject.h

@@ -145,10 +145,6 @@ namespace MobileGL {
                                             GLenum buffer, GLint drawbuffer, const GLfloat* value);
             void (*ClearNamedFramebufferfi)(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
                                             GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
-            void (*ClearNamedFramebufferiv)(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
-                                            GLenum buffer, GLint drawbuffer, const GLint* value);
-            void (*ClearNamedFramebufferuiv)(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
-                                             GLenum buffer, GLint drawbuffer, const GLuint* value);
             void (*BlitFramebuffer)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0,
                                     GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
             void (*BlitNamedFramebuffer)(const SharedPtr<MG_State::GLState::FramebufferObject>& readFramebuffer,
@@ -224,31 +220,6 @@ namespace MobileGL {
             // and leave the query readable later.
             Bool (*GetQueryResult64)(BackendQueryHandle query, Bool wait, Uint64* outNanoseconds);
             void (*DeleteBackendQuery)(BackendQueryHandle query);
-            // GL_SAMPLES_PASSED occlusion queries (optional; null = unsupported,
-            // the frontend then rejects the target). Results/deletion flow through
-            // GetQueryResult64 / DeleteBackendQuery like timer queries.
-            BackendQueryHandle (*BeginOcclusionQuery)();
-            void (*EndOcclusionQuery)(BackendQueryHandle query);
-            // Transform feedback primitive queries backed by real GPU query pools
-            // (optional; null = frontend falls back to CPU accounting).
-            BackendQueryHandle (*BeginXfbPrimitivesQuery)(Bool generated);
-            void (*EndXfbPrimitivesQuery)(BackendQueryHandle query);
-            // Transform feedback capture spans, for backends whose own GL/ES driver
-            // performs the capture (DirectGLES). Both optional; null means the backend
-            // drives capture from its draw recording instead (DirectVulkan). End is
-            // called while the frontend capture state is still active, so the backend
-            // can still see the capture program and buffer bindings.
-            // GL_PATCH_VERTICES; ES 3.2 spells it the same way.
-            void (*PatchParameteri)(GLenum pname, GLint value);
-            void (*BeginTransformFeedback)(GLenum primitiveMode);
-            void (*EndTransformFeedback)();
-            // ARB_transform_feedback2. A backend that leaves these null keeps the single
-            // implicit capture span the frontend has always modelled; the frontend state
-            // (paused flag, per-object bindings) is tracked either way.
-            void (*PauseTransformFeedback)();
-            void (*ResumeTransformFeedback)();
-            void (*BindTransformFeedback)(GLuint name);
-            void (*DeleteTransformFeedback)(GLuint name);
             Int64 (*GetGpuTimestampNs)(); // glGetInteger64v(GL_TIMESTAMP); 0 if unsupported
         };
         struct GlobalBackendFunctionsTable {
@@ -301,13 +272,6 @@ namespace MobileGL {
             Int MaxIntegerSamples = 1;
             Int MaxSamples = 1;
             Int MaxSampleMaskWords = 1;
-            // Tessellation limits; defaults are the GL 4.0 core minimums.
-            Int MaxPatchVertices = 32;
-            Int MaxTessGenLevel = 64;
-            // GL_MIN/MAX_PROGRAM_TEXTURE_GATHER_OFFSET. Defaults are the GL 4.0 core
-            // minimums, which every ES 3.1 driver also guarantees.
-            Int MinProgramTextureGatherOffset = -8;
-            Int MaxProgramTextureGatherOffset = 7;
             Int MaxTextureImageUnits = 32;
             Int MaxVertexTextureImageUnits = 32;
             Int MaxComputeTextureImageUnits = 32;
@@ -319,8 +283,6 @@ namespace MobileGL {
             Int MaxComputeWorkGroupInvocations = 128;
             Int MaxShaderStorageBufferBindings = 8;
             Int MaxTextureBufferSize = 65536;
-            // GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT; 1 means the offset is unconstrained.
-            Int TextureBufferOffsetAlignment = 1;
             Int MaxUniformBufferBindings = 24;
             Int MaxUniformBlockSize = 16384;
             Int MaxImageUnits = 8;
@@ -338,55 +300,7 @@ namespace MobileGL {
             Float ViewportBoundsRangeMin = 0.0f;
             Float ViewportBoundsRangeMax = 0.0f;
             Int ViewportSubpixelBits = 0;
-            // GL 4.x fragment-interpolation offset limits. These defaults are the
-            // core minimums and are replaced by live GLES/Vulkan device limits.
-            Float MinFragmentInterpolationOffset = -0.5f;
-            // For four fractional bits the greatest required legal offset is
-            // 0.5 - 2^-4 = 0.4375 (GL 4.6 table 23.70).
-            Float MaxFragmentInterpolationOffset = 0.4375f;
-            Int FragmentInterpolationOffsetBits = 4;
             Bool SupportsWideLines = false;
-            // Whether a framebuffer whose depth and stencil attachments are distinct
-            // images can be rendered to. GL only requires support when both refer to the
-            // same image and lets an implementation answer GL_FRAMEBUFFER_UNSUPPORTED
-            // otherwise, which is what DirectVulkan (one combined attachment) and the
-            // real ES drivers behind DirectGLES both do. Defaults to true so a backend
-            // that never sets it keeps the permissive behaviour.
-            Bool SupportsDistinctDepthStencilAttachments = true;
-            // Whether attaching a single layer of a 3D or array texture to a framebuffer actually
-            // renders to that layer. DirectGLES hands the layer straight to
-            // glFramebufferTextureLayer, so it does; DirectVulkan maps a GL layer onto a Vulkan
-            // array layer with no notion of a 3D depth slice, so it does not yet. Defaults to false
-            // so a backend that never sets it gets the conservative answer.
-            // Which layered texture targets this backend can attach ONE layer of to a framebuffer
-            // and then really clear, render and read back that layer. Bit (1u << TextureTarget) is
-            // set for each supported target. Deliberately per target rather than one flag: the three
-            // ways a GL layer maps onto Vulkan are independent capabilities. A 2D or 2D multisample
-            // array layer IS a VkImage array layer and needs nothing extra; a 3D texture's layer is
-            // a z slice, which needs a 2D-array-compatible image and a per-slice clear that
-            // vkCmdClearColorImage cannot express; a cube map array needs an image shape and the
-            // imageCubeArray feature before it can be attached at any layer at all. Defaults to 0 so
-            // a backend that never sets it gets the conservative answer.
-            Uint32 PerLayerFramebufferAttachmentTargets = 0;
-
-            static constexpr Uint32 PerLayerFramebufferAttachmentBit(TextureTarget target) {
-                return (static_cast<Int>(target) >= 0 &&
-                        static_cast<Int>(target) < static_cast<Int>(TextureTarget::TextureTargetCount))
-                           ? (1u << static_cast<Uint32>(target))
-                           : 0u;
-            }
-
-            Bool SupportsPerLayerFramebufferAttachment(TextureTarget target) const {
-                const Uint32 bit = PerLayerFramebufferAttachmentBit(target);
-                return bit != 0 && (PerLayerFramebufferAttachmentTargets & bit) != 0;
-            }
-            // Whether glVertexAttribLFormat / glVertexArrayAttribLFormat can be honoured, i.e.
-            // whether a 64-bit vertex attribute can actually reach a shader unconverted. Detected,
-            // never assumed: DirectVulkan needs VkPhysicalDeviceFeatures::shaderFloat64 (the
-            // attribute travels as its 32-bit word pair, so no VK_FORMAT_R64* is required, but the
-            // bitcast result is Float64); DirectGLES can never have it, ESSL having no fp64 type at
-            // all. Defaults to false so a backend that never sets it gets the conservative answer.
-            Bool SupportsFloat64VertexAttributes = false;
             SizeT MaxShaderStorageBlockSize = 128 * 1024 * 1024;
             Uint32 SubgroupSize = 0;
             Uint32 SubgroupSupportedStages = 0;

MobileGL/MG_Backend/DirectGLES/BackendObject_DirectGLES.cpp

@@ -20,7 +20,6 @@
 #include <MG_Util/Texture/TextureFormatProcessor.h>
 #include <Config.h>
 #include <algorithm>
-#include <cmath>
 #include <format>
 
 namespace MobileGL::MG_Backend::DirectGLES {
@@ -32,7 +31,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         void ClearGLErrors(const MG_External::GLESFunctionsTable& gl) {
             if (!gl.glGetError) return;
-            while (gl.glGetError() != GL_NO_ERROR) {}
+            while (gl.glGetError() != GL_NO_ERROR) {
+            }
         }
 
         Bool CheckNoGLError(const MG_External::GLESFunctionsTable& gl) {
@@ -76,7 +76,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         Bool IsGLESProbeMultisampleTarget(TextureTarget target) {
-            return target == TextureTarget::Texture2DMultisample || target == TextureTarget::Texture2DMultisampleArray;
+            return target == TextureTarget::Texture2DMultisample ||
+                   target == TextureTarget::Texture2DMultisampleArray;
         }
 
         GLenum GetFramebufferAttachment(TextureInternalFormat format) {
@@ -113,8 +114,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             GLenum normalizedInternalFormat = glFormat;
             GLenum imageFormat = GL_RGBA;
             GLenum imageType = GL_UNSIGNED_BYTE;
-            MG_Util::TextureFormatProcessor::NormalizePixelFormat(glFormat, PixelFormatNormalizeOptionBit::None,
-                                                                  &normalizedInternalFormat, &imageFormat, &imageType);
+            MG_Util::TextureFormatProcessor::NormalizePixelFormat(
+                glFormat, PixelFormatNormalizeOptionBit::None, &normalizedInternalFormat, &imageFormat, &imageType);
             return imageFormat != GL_RED_INTEGER && imageFormat != GL_RG_INTEGER && imageFormat != GL_RGB_INTEGER &&
                    imageFormat != GL_RGBA_INTEGER && !MG_Util::IsDepthFormatInternalFormat(format) &&
                    !MG_Util::IsStencilFormatInternalFormat(format);
@@ -152,9 +153,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
         GLESProbeFormatInfo BuildNativeProbeFormatInfo(GLenum requestedInternalFormat) {
             GLESProbeFormatInfo info;
             info.InternalFormat = requestedInternalFormat;
-            MG_Util::TextureFormatProcessor::NormalizePixelFormat(requestedInternalFormat,
-                                                                  PixelFormatNormalizeOptionBit::None, nullptr,
-                                                                  &info.ImageFormat, &info.ImageType);
+            MG_Util::TextureFormatProcessor::NormalizePixelFormat(
+                requestedInternalFormat, PixelFormatNormalizeOptionBit::None, nullptr, &info.ImageFormat,
+                &info.ImageType);
             return info;
         }
 
@@ -208,12 +209,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
             if (options & PixelFormatNormalizeOptionBit::NoDepthComponent32) {
                 reasons.push_back("GL_DEPTH_COMPONENT32 native probe failed on OpenGL ES");
             }
-            if (options & PixelFormatNormalizeOptionBit::NoThreeChannelRenderTarget) {
-                reasons.push_back("no three-channel multisample storage format on OpenGL ES");
-            }
-            if (options & PixelFormatNormalizeOptionBit::NoSnorm16RenderTarget) {
-                reasons.push_back("EXT_render_snorm not supported");
-            }
 
             String reason;
             for (SizeT i = 0; i < reasons.size(); ++i) {
@@ -231,16 +226,20 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return MG_Util::ConvertGLEnumToString(internalFormat);
         }
 
-        void LogGLESFormatCaveat(TextureInternalFormat logicalFormat, SizeT targetIndex,
+        void LogGLESFormatCaveat(TextureInternalFormat logicalFormat,
+                                 SizeT targetIndex,
                                  const GLESProbeFormatInfo& fallbackInfo) {
             MGLOG_D("Caveat: %s %s not fully supported. Reason: %s. Fallback: %s",
                     GetFormatCapabilityTargetName(targetIndex).c_str(),
-                    MG_Util::ConvertTextureInternalFormatToString(logicalFormat).c_str(), fallbackInfo.Reason.c_str(),
+                    MG_Util::ConvertTextureInternalFormatToString(logicalFormat).c_str(),
+                    fallbackInfo.Reason.c_str(),
                     ConvertFallbackInternalFormatToString(fallbackInfo.InternalFormat).c_str());
         }
 
-        Bool BuildFallbackProbeFormatInfo(GLenum requestedInternalFormat, Flags<PixelFormatNormalizeOptionBit> options,
-                                          Bool forced, GLESProbeFormatInfo& outInfo) {
+        Bool BuildFallbackProbeFormatInfo(GLenum requestedInternalFormat,
+                                          Flags<PixelFormatNormalizeOptionBit> options,
+                                          Bool forced,
+                                          GLESProbeFormatInfo& outInfo) {
             const Flags<PixelFormatNormalizeOptionBit> applicableOptions =
                 MG_Util::TextureFormatProcessor::GetApplicablePixelFormatNormalizeOptions(requestedInternalFormat,
                                                                                           options);
@@ -255,7 +254,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return outInfo.InternalFormat != GL_UNKNOWN_MGL;
         }
 
-        FormatCapabilityFlags BuildTextureCapsFromProbe(TextureInternalFormat logicalFormat, TextureTarget target,
+        FormatCapabilityFlags BuildTextureCapsFromProbe(TextureInternalFormat logicalFormat,
+                                                        TextureTarget target,
                                                         Bool renderable) {
             FormatCapabilityFlags caps = GetTextureFeatureCaps(logicalFormat, target);
             if (renderable) {
@@ -269,12 +269,16 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return caps;
         }
 
-        void AddFullFormatCaps(FormatCapabilityCache& cache, SizeT targetIndex, SizeT formatIndex,
+        void AddFullFormatCaps(FormatCapabilityCache& cache,
+                               SizeT targetIndex,
+                               SizeT formatIndex,
                                FormatCapabilityFlags caps) {
             cache.FullCaps[targetIndex][formatIndex] |= caps;
         }
 
-        Bool AddCaveatFormatCaps(FormatCapabilityCache& cache, SizeT targetIndex, SizeT formatIndex,
+        Bool AddCaveatFormatCaps(FormatCapabilityCache& cache,
+                                 SizeT targetIndex,
+                                 SizeT formatIndex,
                                  FormatCapabilityFlags caps) {
             Bool added = false;
             for (FormatCapability capability : kReportedFormatCapabilities) {
@@ -288,7 +292,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         Int GetGLESFormatMaxSamples(const MG_External::GLESCapabilities& capabilities,
-                                    TextureInternalFormat logicalFormat, GLenum imageFormat) {
+                                    TextureInternalFormat logicalFormat,
+                                    GLenum imageFormat) {
             const Bool isDepth = MG_Util::IsDepthFormatInternalFormat(logicalFormat);
             const Bool isStencil = MG_Util::IsStencilFormatInternalFormat(logicalFormat);
             const Bool isInteger = imageFormat == GL_RED_INTEGER || imageFormat == GL_RG_INTEGER ||
@@ -302,8 +307,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return capabilities.MaxColorTextureSamples;
         }
 
-        Bool ProbeFramebufferCompletenessForTexture(const MG_External::GLESFunctionsTable& gl, TextureTarget target,
-                                                    GLuint texture, TextureInternalFormat format) {
+        Bool ProbeFramebufferCompletenessForTexture(const MG_External::GLESFunctionsTable& gl,
+                                                   TextureTarget target,
+                                                   GLuint texture,
+                                                   TextureInternalFormat format) {
             GLuint framebuffer = 0;
             GLint prevFramebuffer = 0;
             if (!gl.glGenFramebuffers || !gl.glBindFramebuffer || !gl.glCheckFramebufferStatus ||
@@ -349,44 +356,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return complete;
         }
 
-        // Whether the driver renders to a framebuffer whose depth and stencil come from
-        // two different renderbuffers. GL only requires support when both attachments are
-        // the same image, and ES drivers commonly answer GL_FRAMEBUFFER_UNSUPPORTED here;
-        // reporting COMPLETE from the frontend and then rendering into a framebuffer the
-        // driver refuses leaves the results silently empty.
-        Bool ProbeDistinctDepthStencilAttachments(const MG_External::GLESFunctionsTable& gl) {
-            if (!gl.glGenFramebuffers || !gl.glBindFramebuffer || !gl.glFramebufferRenderbuffer ||
-                !gl.glCheckFramebufferStatus || !gl.glDeleteFramebuffers || !gl.glGenRenderbuffers ||
-                !gl.glBindRenderbuffer || !gl.glRenderbufferStorage || !gl.glDeleteRenderbuffers) {
-                return true;
-            }
-
-            GLint prevFramebuffer = 0, prevRenderbuffer = 0;
-            gl.glGetIntegerv(GL_FRAMEBUFFER_BINDING, &prevFramebuffer);
-            gl.glGetIntegerv(GL_RENDERBUFFER_BINDING, &prevRenderbuffer);
-
-            GLuint framebuffer = 0;
-            GLuint renderbuffers[2] = {0, 0};
-            gl.glGenFramebuffers(1, &framebuffer);
-            gl.glGenRenderbuffers(2, renderbuffers);
-            gl.glBindRenderbuffer(GL_RENDERBUFFER, renderbuffers[0]);
-            gl.glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, 4, 4);
-            gl.glBindRenderbuffer(GL_RENDERBUFFER, renderbuffers[1]);
-            gl.glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, 4, 4);
-            gl.glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
-            gl.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, renderbuffers[0]);
-            gl.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, renderbuffers[1]);
-            const Bool supported = gl.glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE;
-
-            gl.glBindFramebuffer(GL_FRAMEBUFFER, static_cast<GLuint>(prevFramebuffer));
-            gl.glBindRenderbuffer(GL_RENDERBUFFER, static_cast<GLuint>(prevRenderbuffer));
-            gl.glDeleteFramebuffers(1, &framebuffer);
-            gl.glDeleteRenderbuffers(2, renderbuffers);
-            return supported;
-        }
-
-        Bool ProbeFramebufferCompletenessForRenderbuffer(const MG_External::GLESFunctionsTable& gl, GLuint renderbuffer,
-                                                         TextureInternalFormat format) {
+        Bool ProbeFramebufferCompletenessForRenderbuffer(const MG_External::GLESFunctionsTable& gl,
+                                                        GLuint renderbuffer,
+                                                        TextureInternalFormat format) {
             GLuint framebuffer = 0;
             GLint prevFramebuffer = 0;
             if (!gl.glGenFramebuffers || !gl.glBindFramebuffer || !gl.glFramebufferRenderbuffer ||
@@ -453,16 +425,16 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     }
                     break;
                 case TextureTarget::Texture3D:
-                    gl.glTexImage3D(glTarget, 0, static_cast<GLint>(internalFormat), 2, 2, 2, 0, imageFormat, imageType,
-                                    nullptr);
+                    gl.glTexImage3D(glTarget, 0, static_cast<GLint>(internalFormat), 2, 2, 2, 0, imageFormat,
+                                    imageType, nullptr);
                     break;
                 case TextureTarget::Texture2DArray:
-                    gl.glTexImage3D(glTarget, 0, static_cast<GLint>(internalFormat), 2, 2, 1, 0, imageFormat, imageType,
-                                    nullptr);
+                    gl.glTexImage3D(glTarget, 0, static_cast<GLint>(internalFormat), 2, 2, 1, 0, imageFormat,
+                                    imageType, nullptr);
                     break;
                 case TextureTarget::TextureCubeMapArray:
-                    gl.glTexImage3D(glTarget, 0, static_cast<GLint>(internalFormat), 2, 2, 6, 0, imageFormat, imageType,
-                                    nullptr);
+                    gl.glTexImage3D(glTarget, 0, static_cast<GLint>(internalFormat), 2, 2, 6, 0, imageFormat,
+                                    imageType, nullptr);
                     break;
                 default:
                     break;
@@ -483,8 +455,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return created;
         }
 
-        Bool ProbeRenderbuffer(const MG_External::GLESFunctionsTable& gl, GLenum internalFormat,
-                               TextureInternalFormat logicalFormat, Bool multisample, Int samples) {
+        Bool ProbeRenderbuffer(const MG_External::GLESFunctionsTable& gl,
+                               GLenum internalFormat,
+                               TextureInternalFormat logicalFormat,
+                               Bool multisample,
+                               Int samples) {
             if (!gl.glGenRenderbuffers || !gl.glBindRenderbuffer || !gl.glDeleteRenderbuffers) {
                 return false;
             }
@@ -506,16 +481,17 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 gl.glRenderbufferStorage(GL_RENDERBUFFER, internalFormat, 1, 1);
             }
             const Bool created = CheckNoGLError(gl);
-            const Bool complete =
-                created && ProbeFramebufferCompletenessForRenderbuffer(gl, renderbuffer, logicalFormat);
+            const Bool complete = created && ProbeFramebufferCompletenessForRenderbuffer(gl, renderbuffer, logicalFormat);
             gl.glBindRenderbuffer(GL_RENDERBUFFER, static_cast<GLuint>(prevRenderbuffer));
             gl.glDeleteRenderbuffers(1, &renderbuffer);
             ClearGLErrors(gl);
             return complete;
         }
 
-        Vector<Int> ProbeRenderbufferSampleCounts(const MG_External::GLESFunctionsTable& gl, GLenum internalFormat,
-                                                  TextureInternalFormat logicalFormat, Int maxSamples) {
+        Vector<Int> ProbeRenderbufferSampleCounts(const MG_External::GLESFunctionsTable& gl,
+                                                  GLenum internalFormat,
+                                                  TextureInternalFormat logicalFormat,
+                                                  Int maxSamples) {
             Vector<Int> sampleCounts;
             for (Int samples = std::max(maxSamples, 1); samples > 1; samples >>= 1) {
                 if (ProbeRenderbuffer(gl, internalFormat, logicalFormat, true, samples)) {
@@ -543,50 +519,20 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 }
 
                 const GLESProbeFormatInfo nativeInfo = BuildNativeProbeFormatInfo(requestedInternalFormat);
-                GLESProbeFormatInfo outerFallbackInfo;
-                const Bool outerHasForcedFallback =
-                    BuildFallbackProbeFormatInfo(requestedInternalFormat, forcedOptions, true, outerFallbackInfo);
-                if (!outerHasForcedFallback) {
-                    BuildFallbackProbeFormatInfo(requestedInternalFormat, driverOptions, false, outerFallbackInfo);
+                GLESProbeFormatInfo fallbackInfo;
+                const Bool hasForcedFallback =
+                    BuildFallbackProbeFormatInfo(requestedInternalFormat, forcedOptions, true, fallbackInfo);
+                if (!hasForcedFallback) {
+                    BuildFallbackProbeFormatInfo(requestedInternalFormat, driverOptions, false, fallbackInfo);
                 }
 
                 for (SizeT targetIndex = 0; targetIndex < kFormatCapabilityTextureTargetCount; ++targetIndex) {
                     const auto target = static_cast<TextureTarget>(targetIndex);
-                    // A multisample texture can only ever be rendered into, so its storage format
-                    // has to stay colour-renderable; the ordinary fallback for a three-channel
-                    // format is a three-channel one, which ES accepts as a texture but rejects as
-                    // multisample storage. Recompute the fallback per target so those formats get
-                    // widened here and nowhere else.
-                    Flags<PixelFormatNormalizeOptionBit> targetOptions;
-                    if (IsGLESProbeMultisampleTarget(target)) {
-                        targetOptions |= PixelFormatNormalizeOptionBit::NoThreeChannelRenderTarget;
-                        if (!capabilities.SupportsRenderSnorm || !capabilities.SupportsNorm16Texture) {
-                            targetOptions |= PixelFormatNormalizeOptionBit::NoSnorm16RenderTarget;
-                        }
-                    }
-                    GLESProbeFormatInfo fallbackInfo = outerFallbackInfo;
-                    Bool hasForcedFallback = outerHasForcedFallback;
-                    if (targetOptions) {
-                        hasForcedFallback = BuildFallbackProbeFormatInfo(
-                            requestedInternalFormat, forcedOptions | targetOptions, true, fallbackInfo);
-                        if (!hasForcedFallback) {
-                            BuildFallbackProbeFormatInfo(requestedInternalFormat, driverOptions | targetOptions, false,
-                                                         fallbackInfo);
-                        }
-                    }
-
-                    // 1D, 1D-array and rectangle textures live on an ES target (see
-                    // TextureImpl::MapToBackendTextureTarget), so they have to be probed there too -
-                    // probing the desktop-only target itself always failed, which left those slots
-                    // of the cache empty and stopped any fallback format from being selected for
-                    // them (a GL_DEPTH_COMPONENT32 1D texture then got no storage at all).
-                    const TextureTarget probeTarget = TextureImpl::MapToBackendTextureTarget(target);
-
                     Bool shouldProbeFallback = hasForcedFallback;
                     if (!hasForcedFallback) {
                         Bool nativeRenderable = false;
                         const Bool nativeCreated =
-                            ProbeTexture(gl, probeTarget, nativeInfo.InternalFormat, nativeInfo.ImageFormat,
+                            ProbeTexture(gl, target, nativeInfo.InternalFormat, nativeInfo.ImageFormat,
                                          nativeInfo.ImageType, logicalFormat, &nativeRenderable);
                         if (nativeCreated) {
                             AddFullFormatCaps(cache, targetIndex, formatIndex,
@@ -601,12 +547,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     if (shouldProbeFallback && fallbackInfo.InternalFormat != GL_UNKNOWN_MGL) {
                         Bool fallbackRenderable = false;
                         const Bool fallbackCreated =
-                            ProbeTexture(gl, probeTarget, fallbackInfo.InternalFormat, fallbackInfo.ImageFormat,
+                            ProbeTexture(gl, target, fallbackInfo.InternalFormat, fallbackInfo.ImageFormat,
                                          fallbackInfo.ImageType, logicalFormat, &fallbackRenderable);
                         if (fallbackCreated) {
-                            if (AddCaveatFormatCaps(
-                                    cache, targetIndex, formatIndex,
-                                    BuildTextureCapsFromProbe(logicalFormat, target, fallbackRenderable))) {
+                            if (AddCaveatFormatCaps(cache, targetIndex, formatIndex,
+                                                    BuildTextureCapsFromProbe(logicalFormat, target,
+                                                                              fallbackRenderable))) {
                                 LogGLESFormatCaveat(logicalFormat, targetIndex, fallbackInfo);
                             }
                             if (IsGLESProbeMultisampleTarget(target)) {
@@ -617,8 +563,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 }
 
                 const SizeT renderbufferTargetIndex = GetRenderbufferFormatCapabilityTargetIndex();
-                Bool shouldProbeFallbackRenderbuffer = outerHasForcedFallback;
-                if (!outerHasForcedFallback) {
+                Bool shouldProbeFallbackRenderbuffer = hasForcedFallback;
+                if (!hasForcedFallback) {
                     const Bool nativeRenderbufferComplete =
                         ProbeRenderbuffer(gl, nativeInfo.InternalFormat, logicalFormat, false, 1);
                     if (nativeRenderbufferComplete) {
@@ -632,16 +578,16 @@ namespace MobileGL::MG_Backend::DirectGLES {
                         shouldProbeFallbackRenderbuffer = true;
                     }
                 }
-                if (shouldProbeFallbackRenderbuffer && outerFallbackInfo.InternalFormat != GL_UNKNOWN_MGL &&
-                    ProbeRenderbuffer(gl, outerFallbackInfo.InternalFormat, logicalFormat, false, 1)) {
+                if (shouldProbeFallbackRenderbuffer && fallbackInfo.InternalFormat != GL_UNKNOWN_MGL &&
+                    ProbeRenderbuffer(gl, fallbackInfo.InternalFormat, logicalFormat, false, 1)) {
                     if (AddCaveatFormatCaps(cache, renderbufferTargetIndex, formatIndex,
                                             GetRenderbufferFeatureCaps(logicalFormat))) {
-                        LogGLESFormatCaveat(logicalFormat, renderbufferTargetIndex, outerFallbackInfo);
+                        LogGLESFormatCaveat(logicalFormat, renderbufferTargetIndex, fallbackInfo);
                     }
                     const Int maxSamples =
-                        GetGLESFormatMaxSamples(capabilities, logicalFormat, outerFallbackInfo.ImageFormat);
+                        GetGLESFormatMaxSamples(capabilities, logicalFormat, fallbackInfo.ImageFormat);
                     cache.SampleCounts[renderbufferTargetIndex][formatIndex] =
-                        ProbeRenderbufferSampleCounts(gl, outerFallbackInfo.InternalFormat, logicalFormat, maxSamples);
+                        ProbeRenderbufferSampleCounts(gl, fallbackInfo.InternalFormat, logicalFormat, maxSamples);
                 }
             }
         }
@@ -657,7 +603,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 .ExtraVendor = Nullopt,              // Extra vendor
                 .RendererGLInfo =
                     {
-                        .TargetGLVersion = {4, 0, 0},   // GL target version
+                        .TargetGLVersion = {3, 3, 0},   // Target OpenGL Version
                         .TargetGLSLVersion = {4, 6, 0}, // Target Shading Language Version
                         // Baseline advertisement (no timer queries / anisotropy yet); reconciled
                         // once the ES capabilities exist, see UpdateAdvertisedCapabilityExtensions.
@@ -688,7 +634,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
     } // namespace
 
     void PopulateFormatCapabilities(const MG_External::GLESFunctionsTable& gl,
-                                    const MG_External::GLESCapabilities& capabilities, FormatCapabilityCache& cache) {
+                                    const MG_External::GLESCapabilities& capabilities,
+                                    FormatCapabilityCache& cache) {
         PopulateFormatCapabilitiesImpl(gl, capabilities, cache);
     }
 
@@ -752,8 +699,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return false;
         }
 
-        if ((handle.Backend != WindowBackend::Android && handle.Backend != WindowBackend::X11 &&
-             handle.Backend != WindowBackend::MetalLayer && handle.Backend != WindowBackend::Win32) ||
+        if ((handle.Backend != WindowBackend::Android &&
+             handle.Backend != WindowBackend::X11 &&
+             handle.Backend != WindowBackend::MetalLayer &&
+             handle.Backend != WindowBackend::Win32) ||
             !handle.Handle) {
             MGLOG_E("DirectGLES backend only supports Android, X11, CAMetalLayer, and Win32 native windows");
             return false;
@@ -872,25 +821,17 @@ namespace MobileGL::MG_Backend::DirectGLES {
     }
 
     Vector<GLExtension> BuildAdvertisedExtensions(Bool timerQueriesSupported, Bool anisotropicFilteringSupported) {
-        Vector<GLExtension> extensions = {
-            V_OpenGL30, V_OpenGL31, V_OpenGL32, V_OpenGL33, V_OpenGL40, E_GL_ARB_draw_buffers_blend,
-            E_GL_ARB_compute_shader, E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
-            E_GL_ARB_program_interface_query, E_GL_ARB_framebuffer_object, E_GL_EXT_framebuffer_object,
-            E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage, E_GL_ARB_texture_storage,
-            E_GL_ARB_texture_storage_multisample, E_GL_ARB_clear_texture, E_GL_ARB_direct_state_access,
-            E_GL_ARB_multi_draw_indirect, E_GL_ARB_indirect_parameters, E_GL_ARB_shader_draw_parameters,
-            E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind, E_GL_ARB_shading_language_420pack,
-            E_GL_ARB_vertex_attrib_binding,
-            // Both are core from GL 3.2/3.3 on and implemented here for
-            // every advertised version, but an app targeting 3.0/3.1
-            // only reaches them through the extension string - the CTS
-            // picks a whole different shader for draw_buffers without
-            // explicit_attrib_location. DirectVulkan advertises both.
-            E_GL_ARB_explicit_attrib_location, E_GL_ARB_texture_multisample, E_GL_ARB_shader_image_size,
-            // Advertised with GL_NUM_PROGRAM_BINARY_FORMATS = 0, which the
-            // extension explicitly permits. It is also the only thing that
-            // exposes glProgramParameteri before GL 4.1.
-            E_GL_ARB_get_program_binary};
+        Vector<GLExtension> extensions = {V_OpenGL30, V_OpenGL31, V_OpenGL32,
+                                          V_OpenGL33, E_GL_ARB_draw_buffers_blend, E_GL_ARB_compute_shader,
+                                          E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
+                                          E_GL_ARB_program_interface_query, E_GL_ARB_framebuffer_object,
+                                          E_GL_EXT_framebuffer_object, E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage,
+                                          E_GL_ARB_texture_storage, E_GL_ARB_texture_storage_multisample,
+                                          E_GL_ARB_clear_texture, E_GL_ARB_direct_state_access,
+                                          E_GL_ARB_multi_draw_indirect, E_GL_ARB_indirect_parameters,
+                                          E_GL_ARB_shader_draw_parameters, E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind,
+                                          E_GL_ARB_shading_language_420pack, E_GL_ARB_vertex_attrib_binding,
+                                          E_GL_ARB_shader_image_size};
         // Only advertised when the device driver actually has usable timer queries
         // (GL_EXT_disjoint_timer_query plus its entry points) and the
         // MOBILEGL_DISABLE_TIMERQUERY escape hatch is off.
@@ -964,8 +905,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
             funcsTable.GL.ClearBufferuiv = ClearBufferuiv;
             funcsTable.GL.ClearBufferiv = ClearBufferiv;
             funcsTable.GL.ClearNamedFramebufferfv = ClearNamedFramebufferfv;
-            funcsTable.GL.ClearNamedFramebufferiv = ClearNamedFramebufferiv;
-            funcsTable.GL.ClearNamedFramebufferuiv = ClearNamedFramebufferuiv;
             funcsTable.GL.ClearNamedFramebufferfi = ClearNamedFramebufferfi;
             funcsTable.GL.BlitFramebuffer = BlitFramebuffer;
             funcsTable.GL.BlitNamedFramebuffer = BlitNamedFramebuffer;
@@ -995,30 +934,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 funcsTable.GL.BeginTimeElapsedQuery = BeginTimeElapsedQuery;
                 funcsTable.GL.EndTimeElapsedQuery = EndTimeElapsedQuery;
                 funcsTable.GL.QueryCounterTimestamp = QueryCounterTimestamp;
+                funcsTable.GL.IsQueryResultAvailable = IsQueryResultAvailable;
+                funcsTable.GL.GetQueryResult64 = GetQueryResult64;
+                funcsTable.GL.DeleteBackendQuery = DeleteBackendQuery;
                 funcsTable.GL.GetGpuTimestampNs = GetGpuTimestampNs;
             }
-            // Occlusion queries are core ES3 (independent of MOBILEGL_DISABLE_TIMERQUERY)
-            // and share the handle-based result/delete entries, which must exist even
-            // when the timer-query group above is disabled.
-            funcsTable.GL.BeginOcclusionQuery = BeginOcclusionQuery;
-            funcsTable.GL.EndOcclusionQuery = EndOcclusionQuery;
-            // Real driver primitive counters: the frontend's CPU accounting cannot see a
-            // geometry shader's amplification.
-            funcsTable.GL.BeginXfbPrimitivesQuery = BeginXfbPrimitivesQuery;
-            funcsTable.GL.EndXfbPrimitivesQuery = EndXfbPrimitivesQuery;
-            funcsTable.GL.IsQueryResultAvailable = IsQueryResultAvailable;
-            funcsTable.GL.GetQueryResult64 = GetQueryResult64;
-            funcsTable.GL.DeleteBackendQuery = DeleteBackendQuery;
-            // Transform feedback is captured by the real ES driver rather than
-            // reconstructed from the draw recording, so the frontend has to hand the
-            // span boundaries over.
-            funcsTable.GL.PatchParameteri = DirectGLES::PatchParameteri;
-            funcsTable.GL.BeginTransformFeedback = XfbImpl::BeginTransformFeedback;
-            funcsTable.GL.EndTransformFeedback = XfbImpl::EndTransformFeedback;
-            funcsTable.GL.PauseTransformFeedback = XfbImpl::PauseTransformFeedback;
-            funcsTable.GL.ResumeTransformFeedback = XfbImpl::ResumeTransformFeedback;
-            funcsTable.GL.BindTransformFeedback = XfbImpl::BindTransformFeedback;
-            funcsTable.GL.DeleteTransformFeedback = XfbImpl::DeleteTransformFeedback;
             funcsTableInitialized = true;
         }
         return funcsTable;
@@ -1028,7 +948,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         return m_dynamicParameters;
     }
 
-    void BackendObject_DirectGLES::ApplyGLESCapabilitiesForTesting(const MG_External::GLESCapabilities& capabilities) {
+    void BackendObject_DirectGLES::ApplyGLESCapabilitiesForTesting(
+        const MG_External::GLESCapabilities& capabilities) {
         m_GLESCapabilities = capabilities;
         UpdateDynamicBackendParameters();
     }
@@ -1058,10 +979,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
         m_dynamicParameters.MaxIntegerSamples = m_GLESCapabilities.MaxIntegerSamples;
         m_dynamicParameters.MaxSamples = m_GLESCapabilities.MaxSamples;
         m_dynamicParameters.MaxSampleMaskWords = m_GLESCapabilities.MaxSampleMaskWords;
-        m_dynamicParameters.MaxPatchVertices = m_GLESCapabilities.MaxPatchVertices;
-        m_dynamicParameters.MaxTessGenLevel = m_GLESCapabilities.MaxTessGenLevel;
-        m_dynamicParameters.MinProgramTextureGatherOffset = m_GLESCapabilities.MinProgramTextureGatherOffset;
-        m_dynamicParameters.MaxProgramTextureGatherOffset = m_GLESCapabilities.MaxProgramTextureGatherOffset;
         // Clamp the advertised sampler limits the same way the DirectVulkan backend does: per-stage
         // GL_MAX_TEXTURE_IMAGE_UNITS must never exceed host-side fixed arrays sized off it (e.g.
         // Minecraft's 128-entry Blaze3D GlStateManager.TEXTURES[], iterated by Iris), and the combined
@@ -1089,10 +1006,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
         m_dynamicParameters.MaxComputeWorkGroupInvocations = m_GLESCapabilities.MaxComputeWorkGroupInvocations;
         m_dynamicParameters.MaxShaderStorageBufferBindings = m_GLESCapabilities.MaxShaderStorageBufferBindings;
         m_dynamicParameters.MaxTextureBufferSize = m_GLESCapabilities.MaxTextureBufferSize;
-        m_dynamicParameters.TextureBufferOffsetAlignment = m_GLESCapabilities.TextureBufferOffsetAlignment;
         m_dynamicParameters.MaxUniformBufferBindings = m_GLESCapabilities.MaxUniformBufferBindings;
         m_dynamicParameters.MaxUniformBlockSize = m_GLESCapabilities.MaxUniformBlockSize;
-        const Int maxSupportedTextureUnits = static_cast<Int>(MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS);
+        const Int maxSupportedTextureUnits =
+            static_cast<Int>(MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS);
         m_dynamicParameters.MaxImageUnits =
             std::max(std::min(m_GLESCapabilities.MaxImageUnits, maxSupportedTextureUnits), 0);
         m_dynamicParameters.MaxCombinedImageUniforms = std::max(m_GLESCapabilities.MaxCombinedImageUniforms, 0);
@@ -1100,40 +1017,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return std::min({std::max(stageLimit, 0), m_dynamicParameters.MaxImageUnits,
                              m_dynamicParameters.MaxCombinedImageUniforms});
         };
-        m_dynamicParameters.MaxVertexImageUniforms = clampStageImageUniforms(m_GLESCapabilities.MaxVertexImageUniforms);
+        m_dynamicParameters.MaxVertexImageUniforms =
+            clampStageImageUniforms(m_GLESCapabilities.MaxVertexImageUniforms);
         m_dynamicParameters.MaxGeometryImageUniforms =
             clampStageImageUniforms(m_GLESCapabilities.MaxGeometryImageUniforms);
         m_dynamicParameters.MaxFragmentImageUniforms =
             clampStageImageUniforms(m_GLESCapabilities.MaxFragmentImageUniforms);
         m_dynamicParameters.MaxComputeImageUniforms =
             clampStageImageUniforms(m_GLESCapabilities.MaxComputeImageUniforms);
-        m_dynamicParameters.SupportsDistinctDepthStencilAttachments =
-            ProbeDistinctDepthStencilAttachments(DirectGLES::g_GLESFuncs);
-        // SyncAttachmentObject routes a layered upload target to glFramebufferTextureLayer with the
-        // attachment's layer passed through, so this backend really does render to the layer it was
-        // given - provided the driver resolved the entry point at all.
-        // SyncAttachmentObject (Managers.cpp, the glFramebufferTextureLayer branch) routes exactly
-        // five upload targets to glFramebufferTextureLayer with the attachment's layer passed
-        // through, so this backend really does render to the layer it was given - provided the driver
-        // resolved the entry point at all. The cube map array is the one target that also needs
-        // ES-level support before it has any storage to attach.
-        m_dynamicParameters.PerLayerFramebufferAttachmentTargets = 0;
-        if (DirectGLES::g_GLESFuncs.glFramebufferTextureLayer != nullptr) {
-            using DynParams = MG_Backend::DynamicBackendParameters;
-            m_dynamicParameters.PerLayerFramebufferAttachmentTargets |=
-                DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture3D) |
-                DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture1DArray) |
-                DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture2DArray) |
-                DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture2DMultisampleArray);
-            if (m_GLESCapabilities.SupportsTextureCubeMapArray) {
-                m_dynamicParameters.PerLayerFramebufferAttachmentTargets |=
-                    DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::TextureCubeMapArray);
-            }
-        }
-        // Not a driver question and never will be: OpenGL ES has no double-precision vertex format
-        // and ESSL has no fp64 type to consume one with, so a 64-bit vertex attribute has nowhere to
-        // land on this backend regardless of what the driver underneath happens to support.
-        m_dynamicParameters.SupportsFloat64VertexAttributes = false;
         m_dynamicParameters.MaxDrawBuffers = m_GLESCapabilities.MaxDrawBuffers;
         m_dynamicParameters.MaxColorAttachments = m_GLESCapabilities.MaxColorAttachments;
         m_dynamicParameters.MaxClipDistances = m_GLESCapabilities.MaxClipDistances;
@@ -1143,29 +1034,13 @@ namespace MobileGL::MG_Backend::DirectGLES {
         m_dynamicParameters.ViewportBoundsRangeMin = m_GLESCapabilities.ViewportBoundsRangeMin;
         m_dynamicParameters.ViewportBoundsRangeMax = m_GLESCapabilities.ViewportBoundsRangeMax;
         m_dynamicParameters.ViewportSubpixelBits = m_GLESCapabilities.ViewportSubpixelBits;
-        m_dynamicParameters.MinFragmentInterpolationOffset =
-            std::isfinite(m_GLESCapabilities.MinFragmentInterpolationOffset) &&
-                    m_GLESCapabilities.MinFragmentInterpolationOffset <= -0.5f
-                ? m_GLESCapabilities.MinFragmentInterpolationOffset
-                : -0.5f;
-        m_dynamicParameters.MaxFragmentInterpolationOffset = 0.4375f;
-        m_dynamicParameters.FragmentInterpolationOffsetBits = 4;
-        if (m_GLESCapabilities.FragmentInterpolationOffsetBits >= 4 &&
-            std::isfinite(m_GLESCapabilities.MaxFragmentInterpolationOffset)) {
-            const Float requiredMaxOffset =
-                0.5f - std::ldexp(1.0f, -m_GLESCapabilities.FragmentInterpolationOffsetBits);
-            if (m_GLESCapabilities.MaxFragmentInterpolationOffset >= requiredMaxOffset) {
-                m_dynamicParameters.MaxFragmentInterpolationOffset = m_GLESCapabilities.MaxFragmentInterpolationOffset;
-                m_dynamicParameters.FragmentInterpolationOffsetBits =
-                    m_GLESCapabilities.FragmentInterpolationOffsetBits;
-            }
-        }
         m_dynamicParameters.SupportsWideLines =
             m_GLESCapabilities.AliasedLineWidthRangeMax > 1.0f || m_GLESCapabilities.SmoothLineWidthRangeMax > 1.0f;
 
         const auto containsAny = [](const String& haystack, std::initializer_list<const char*> needles) {
-            return std::any_of(needles.begin(), needles.end(),
-                               [&](const char* needle) { return haystack.find(needle) != String::npos; });
+            return std::any_of(needles.begin(), needles.end(), [&](const char* needle) {
+                return haystack.find(needle) != String::npos;
+            });
         };
         const String vendorAndRenderer =
             m_GLESCapabilities.GLESVendorString + " " + m_GLESCapabilities.GLESRendererString;

MobileGL/MG_Backend/DirectGLES/DirectGLES.h

@@ -59,10 +59,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                  GLenum buffer, GLint drawbuffer, const GLfloat* value);
     void ClearNamedFramebufferfi(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
                                  GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
-    void ClearNamedFramebufferiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
-                                 GLenum buffer, GLint drawbuffer, const GLint* value);
-    void ClearNamedFramebufferuiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
-                                  GLenum buffer, GLint drawbuffer, const GLuint* value);
     void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
                          GLint dstY1, GLbitfield mask, GLenum filter);
     void BlitNamedFramebuffer(const SharedPtr<MG_State::GLState::FramebufferObject>& readFramebuffer,
@@ -134,16 +130,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
     BackendQueryHandle BeginTimeElapsedQuery();
     void EndTimeElapsedQuery(BackendQueryHandle query);
     BackendQueryHandle QueryCounterTimestamp();
-    // GL_ANY_SAMPLES_PASSED(_CONSERVATIVE) occlusion queries: core ES3, independent of
-    // GL_EXT_disjoint_timer_query and of MOBILEGL_DISABLE_TIMERQUERY. Results/deletion
-    // flow through GetQueryResult64/DeleteBackendQuery like the timer queries above.
-    BackendQueryHandle BeginOcclusionQuery();
-    void EndOcclusionQuery(BackendQueryHandle query);
-    // GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN / GL_PRIMITIVES_GENERATED, also core ES
-    // (GL_PRIMITIVES_GENERATED from ES 3.2 on). Null when the target is unavailable, in
-    // which case the frontend falls back to counting primitives from the draw calls.
-    BackendQueryHandle BeginXfbPrimitivesQuery(Bool generated);
-    void EndXfbPrimitivesQuery(BackendQueryHandle query);
     Bool IsQueryResultAvailable(BackendQueryHandle query);
     // Returns true when a final value landed in *outNanoseconds (a zero for
     // null or stale-generation handles IS final: the frontend may cache it
@@ -168,24 +154,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
     void SetGLESCapabilities(const MG_External::GLESCapabilities& capabilities);
     void DestroyEGLContext();
 
-    // Transform feedback capture spans, performed by the real ES driver. The
-    // capture set is declared on the backend program at link time; the driver-side
-    // begin is deferred to the first draw of the span (ES needs the capturing
-    // program current and the capture buffers bound), and the end also mirrors the
-    // captured bytes back into the frontend buffer shadows.
-    void PatchParameteri(GLenum pname, GLint value);
-
-    namespace XfbImpl {
-        Bool AreTransformFeedbacksSupported();
-        void BeginTransformFeedback(GLenum primitiveMode);
-        void EndTransformFeedback();
-        void PauseTransformFeedback();
-        void ResumeTransformFeedback();
-        void BindTransformFeedback(GLuint name);
-        void DeleteTransformFeedback(GLuint name);
-        void OnBackendContextDestroyed();
-    } // namespace XfbImpl
-
     extern MG_External::EGLFunctionsTable g_EGLFuncs;
     extern MG_External::GLESFunctionsTable g_GLESFuncs;
     extern MG_External::GLESCapabilities g_GLESCapabilities;

MobileGL/MG_Backend/DirectGLES/Managers.cpp

@@ -630,32 +630,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 resource->syncedChangeSerial = bufferObject.GetChangeSerial();
             }
 
-            // A shader wrote this buffer through a storage/atomic-counter binding, so the ES
-            // driver's copy is ahead of the frontend shadow. Pull the whole thing back so
-            // MapBuffer/GetBufferSubData/CopyBufferSubData see the real results.
-            void Ops_ReadbackFromGpu(BufferObject& bufferObject) {
-                auto* resource = ResourceOf(bufferObject);
-                if (!resource || resource->id == 0 || !resource->storageInitialized) return;
-                if (resource->persistentMapped) return; // shadow already IS the GPU storage
-                if (!CanTouchGLNow() || resource->contextGeneration != g_bufferContextGeneration) return;
-                if (!g_GLESFuncs.glMapBufferRange || !g_GLESFuncs.glUnmapBuffer) return;
-                const SizeT size = std::min<SizeT>(bufferObject.GetSize(), resource->storageSize);
-                if (size == 0) return;
-
-                BindBufferId(TempBufferTarget, resource->id);
-                void* mapped = g_GLESFuncs.glMapBufferRange(TempBufferTarget, 0, static_cast<GLsizeiptr>(size),
-                                                            GL_MAP_READ_BIT);
-                if (mapped == nullptr) {
-                    MGLOG_E("Ops_ReadbackFromGpu: glMapBufferRange(read) failed for buffer %u", resource->id);
-                    return;
-                }
-                bufferObject.WritebackFromBackend({mapped, size}, 0);
-                g_GLESFuncs.glUnmapBuffer(TempBufferTarget);
-                // The shadow now matches the backend byte for byte; without this the next
-                // draw would see a newer change serial and re-upload the readback over it.
-                resource->syncedChangeSerial = bufferObject.GetChangeSerial();
-            }
-
             void Ops_OnDestroy(SharedPtr<BackendBufferResource>&& resource) {
                 if (!resource) return;
                 auto* glesResource = static_cast<GLESBufferResource*>(resource.get());
@@ -688,7 +662,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 .FlushMappedRange = Ops_FlushMappedRange,
                 .OnDestroy = Ops_OnDestroy,
                 .AcquirePersistentMap = Ops_AcquirePersistentMap,
-                .ReadbackFromGpu = Ops_ReadbackFromGpu,
             };
         } // namespace
 
@@ -1289,15 +1262,31 @@ namespace MobileGL::MG_Backend::DirectGLES {
             const auto& allAttributes = stateVAOObject->GetAllAttributes();
             for (Uint attribIndex = 0; attribIndex < allAttributes.size(); ++attribIndex) {
                 const auto& attrib = allAttributes[attribIndex];
+                const Uint32 attribBit = 1u << attribIndex;
+
+                // An enabled attrib with neither a buffer object nor a client pointer has no
+                // source; GL tolerates the state (only draws consuming it are undefined), but
+                // Adreno's ES driver memcpys the "client array" from address 0 at draw time
+                // (SIGSEGV). Keep such attribs disabled on the backend VAO and re-enable them
+                // the moment they gain a source - the mask-vs-current compare below triggers
+                // the enable even when only the Buffer/Format versions changed.
+                const Bool unsourceable = attrib.Enabled && !attrib.Buffer && attrib.Offset == 0;
+                const Bool wasForceDisabled = (m_forceDisabledAttribsMask & attribBit) != 0;
+
                 Bool needsSyncSwitch = allAttributeVersions[attribIndex].SwitchVersion !=
                                        m_syncedAttributeVersions[attribIndex].SwitchVersion;
-                if (needsSyncSwitch) {
-                    if (attrib.Enabled) {
+                if (needsSyncSwitch || unsourceable != wasForceDisabled) {
+                    if (attrib.Enabled && !unsourceable) {
                         g_GLESFuncs.glEnableVertexAttribArray(attribIndex);
                     } else {
                         g_GLESFuncs.glDisableVertexAttribArray(attribIndex);
                     }
                 }
+                if (unsourceable) {
+                    m_forceDisabledAttribsMask |= attribBit;
+                } else {
+                    m_forceDisabledAttribsMask &= ~attribBit;
+                }
 
                 Bool needsSyncFormat = allAttributeVersions[attribIndex].FormatVersion !=
                                        m_syncedAttributeVersions[attribIndex].FormatVersion;
@@ -1305,23 +1294,17 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                        m_syncedAttributeVersions[attribIndex].BufferVersion;
                 if (!needsSyncFormat && !needsSyncBuffer) continue;
 
-                // Defence in depth. The frontend already declines glVertexAttribLFormat on this
-                // backend (SupportsFloat64VertexAttributes is false - ES has no GL_DOUBLE vertex
-                // format and ESSL has no fp64 type), so IsLong should never arrive here; if it ever
-                // did, passing GL_DOUBLE to glVertexAttribPointer would only raise GL_INVALID_ENUM on
-                // the real driver. Disabling rather than merely skipping matters: becoming long bumps
-                // FormatVersion, not SwitchVersion, so the enable/disable block above will not run
-                // again and an already-enabled array would stay enabled with no pointer and no
-                // ARRAY_BUFFER binding - which ES 3.1+ makes an INVALID_OPERATION at draw.
-                if (attrib.IsLong) {
-                    MGLOG_E("DirectGLES: vertex attribute %u is a 64-bit (GL_DOUBLE) array, which this "
-                            "backend cannot feed - disabling the array",
-                            attribIndex);
-                    g_GLESFuncs.glDisableVertexAttribArray(attribIndex);
-                    continue;
-                }
+                if (unsourceable) continue;
+
+                // Client-side array with a non-null pointer: the pointer is uploaded and applied
+                // per draw by SyncClientSideAttributesForDrawArrays.
+                if (!attrib.Buffer) continue;
 
                 if (!BindAttributeBuffer(attrib)) {
+                    if (attrib.Enabled) {
+                        g_GLESFuncs.glDisableVertexAttribArray(attribIndex);
+                        m_forceDisabledAttribsMask |= attribBit;
+                    }
                     continue;
                 }
 
@@ -1382,13 +1365,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     continue;
                 }
 
-                // Same reason as SyncToBackend: there is no ES vertex format for a 64-bit array, and
-                // this path only ever reaches glVertexAttribPointer/IPointer.
-                if (attrib.IsLong) {
-                    g_GLESFuncs.glDisableVertexAttribArray(attribIndex);
-                    continue;
-                }
-
                 const auto* clientData = reinterpret_cast<const Uint8*>(attrib.Offset);
                 const SizeT elementSize = GetAttributeByteSize(attrib.Type, attrib.Size, attrib.IsBgra);
                 if (!clientData || elementSize == 0 || attrib.Size <= 0) {
@@ -1911,9 +1887,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                 break;
                             case TextureTarget::Texture3D:
                             case TextureTarget::Texture2DArray:
-                            // ES 3.2 has GL_TEXTURE_CUBE_MAP_ARRAY natively and it stores exactly
-                            // like a 2D array whose depth is 6 * the cube count.
-                            case TextureTarget::TextureCubeMapArray:
                                 g_GLESFuncs.glTexImage3D(
                                     glUploadTarget, static_cast<GLint>(level), (GLint)glInternalFormat,
                                     static_cast<GLsizei>(uploadSize.x()), static_cast<GLsizei>(uploadSize.y()),
@@ -1991,7 +1964,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                             break;
                         case TextureTarget::Texture3D:
                         case TextureTarget::Texture2DArray:
-                        case TextureTarget::TextureCubeMapArray:
                             g_GLESFuncs.glTexStorage3D(target, static_cast<GLsizei>(mipmapCount), glInternalFormat,
                                                        static_cast<GLsizei>(storageSize.x()),
                                                        static_cast<GLsizei>(storageSize.y()),
@@ -2044,7 +2016,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                         break;
                                     case TextureTarget::Texture3D:
                                     case TextureTarget::Texture2DArray:
-                                    case TextureTarget::TextureCubeMapArray:
                                         g_GLESFuncs.glTexSubImage3D(
                                             glUploadTarget, static_cast<GLint>(level), 0, 0, 0,
                                             static_cast<GLsizei>(uploadSize.x()),
@@ -2108,8 +2079,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                     break;
                                 }
                                 case TextureTarget::Texture3D:
-                                case TextureTarget::Texture2DArray:
-                                case TextureTarget::TextureCubeMapArray: {
+                                case TextureTarget::Texture2DArray: {
                                     g_GLESFuncs.glTexImage3D(
                                         glUploadTarget, static_cast<GLint>(level), (GLint)glInternalFormat,
                                         static_cast<GLsizei>(uploadSize.x()),
@@ -2209,9 +2179,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                 break;
                             case TextureTarget::Texture3D:
                             case TextureTarget::Texture2DArray:
-                            // ES 3.2 has GL_TEXTURE_CUBE_MAP_ARRAY natively and it stores exactly
-                            // like a 2D array whose depth is 6 * the cube count.
-                            case TextureTarget::TextureCubeMapArray:
                                 g_GLESFuncs.glTexSubImage3D(glUploadTarget, static_cast<GLint>(level), 0, 0, 0,
                                                             static_cast<GLsizei>(uploadSize.x()),
                                                             static_cast<GLsizei>(uploadSize.y()),
@@ -2264,24 +2231,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                             "ID: %u, buffer ID: %u, buffer size: %zu, format: %s",
                             m_backendTextureId, backendId, buffer->GetSize(),
                             MG_Util::ConvertGLEnumToString(glInternalFormat).c_str());
-                    // A texture that names a window of the buffer needs the range form; the
-                    // whole-buffer forms report offset 0 and the buffer's current size, which
-                    // glTexBuffer expresses more directly (and works where the range entry point
-                    // is absent).
-                    const SizeT rangeOffset = textureBufferObject->GetBufferRangeOffset();
-                    const SizeT rangeSize = textureBufferObject->GetBufferRangeSizeInBytes();
-                    if (rangeOffset == 0 && rangeSize == buffer->GetSize()) {
-                        g_GLESFuncs.glTexBuffer(GL_TEXTURE_BUFFER, glInternalFormat, backendId);
-                    } else if (g_GLESFuncs.glTexBufferRange != nullptr) {
-                        g_GLESFuncs.glTexBufferRange(GL_TEXTURE_BUFFER, glInternalFormat, backendId,
-                                                     static_cast<GLintptr>(rangeOffset),
-                                                     static_cast<GLsizeiptr>(rangeSize));
-                    } else {
-                        MGLOG_E("Texture buffer %u names a sub-range but the driver has no "
-                                "glTexBufferRange; binding the whole buffer instead",
-                                stateTextureObject->GetExternalIndex());
-                        g_GLESFuncs.glTexBuffer(GL_TEXTURE_BUFFER, glInternalFormat, backendId);
-                    }
+                    g_GLESFuncs.glTexBuffer(GL_TEXTURE_BUFFER, glInternalFormat, backendId);
                     DebugImpl::ErrorLopper::Loop(
                         [file = __FILE__, line = __LINE__, func = __func__, glInternalFormat, backendId](GLenum err) {
                             MGLOG_D("%s(%s:%d) glTexBuffer(format=%s, buffer=%u) ES error: %s",
@@ -2481,19 +2431,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
-            // A three-channel format widened to four for a multisample target (see
-            // NormalizePixelFormat) gains an alpha channel the frontend format does not have, and
-            // whatever the draw that filled it wrote there is not what GL would report: a format
-            // without alpha reads back as 1.0. Answer the ALPHA swizzle source with ONE so the
-            // promotion stays invisible, composed with the swizzle the application asked for.
-            Vec4<TextureSwizzleParam> swizzleParams = stateTextureObject->GetAllSwizzleParams();
-            if (TextureImpl::BackendTextureFormatAddsAlpha(stateTextureObject->GetFormat(), targetInternal)) {
-                for (SizeT channel = 0; channel < 4; ++channel) {
-                    if (swizzleParams[channel] == TextureSwizzleParam::Alpha) {
-                        swizzleParams[channel] = TextureSwizzleParam::One;
-                    }
-                }
-            }
+            const auto& swizzleParams = stateTextureObject->GetAllSwizzleParams();
             if (swizzleParams != m_cacheSwizzleParams) {
 #define SYNC_TEX_SWIZZLE_PARAM_IF_CHANGED(func, glEnum)                                                                \
     if (m_cacheSwizzleParams.func != swizzleParams.func) {                                                             \
@@ -2511,10 +2449,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 });
             }
 
-            // GL_TEXTURE_BORDER_COLOR needs ES 3.2 or EXT/OES_texture_border_clamp; on a driver
-            // without it every such call is INVALID_ENUM, so the parameter is simply not synced.
-            if (!isMultisampleTarget && g_GLESCapabilities.SupportsTextureBorderClamp &&
-                m_cacheBorderColor != stateTextureObject->GetBorderColor()) {
+            if (!isMultisampleTarget && m_cacheBorderColor != stateTextureObject->GetBorderColor()) {
                 const auto& borderColor = stateTextureObject->GetBorderColor();
                 GLfloat borderColorArray[4] = {borderColor.x(), borderColor.y(), borderColor.z(), borderColor.w()};
                 g_GLESFuncs.glTexParameterfv(target, GL_TEXTURE_BORDER_COLOR, borderColorArray);
@@ -2555,12 +2490,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            // Identity until a non-identity draw-buffer array forces a relocation. A framebuffer
-            // that is never draw-bound never runs the recompute, so the table has to start out
-            // matching what the attachment loop will physically do.
-            for (Uint i = 0; i < MAX_COLOR_ATTACHMENT_SLOTS; ++i) {
-                m_backendColorSlots[i] = GL_COLOR_ATTACHMENT0 + i;
-            }
             g_GLESFuncs.glGenFramebuffers(1, &m_backendFBOId);
             if (m_backendFBOId == 0) {
                 MGLOG_E("Failed to generate framebuffer object.");
@@ -2634,16 +2563,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
             std::fill(std::begin(m_frontendDrawBuffers), std::end(m_frontendDrawBuffers),
                       FramebufferAttachmentType::Unknown);
             std::fill(std::begin(m_backendDrawBuffers), std::end(m_backendDrawBuffers), GL_NONE);
-            // NOTE: this does NOT empty the backend ES framebuffer - m_backendFBOId keeps every
-            // attachment it had, possibly under a non-identity permutation. Declaring the table
-            // identity here is safe only because every attachment version below is invalidated too,
-            // so the next sync re-attaches all non-empty attachments at their identity points AND
-            // (see SyncToBackend's attachment loop) detaches any colour point whose frontend owner
-            // is empty. Without that detach a stale image would survive under a point the table now
-            // claims for a different, empty attachment.
-            for (Uint i = 0; i < MAX_COLOR_ATTACHMENT_SLOTS; ++i) {
-                m_backendColorSlots[i] = GL_COLOR_ATTACHMENT0 + i;
-            }
             m_frontendReadBuffer = FramebufferAttachmentType::Unknown;
             m_backendReadBuffer = GL_NONE;
             std::fill(m_syncedFrontendAttachmentVersions.begin(), m_syncedFrontendAttachmentVersions.end(),
@@ -2678,8 +2597,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 } else if (const auto uploadTarget = attachmentObject.GetTextureUploadTarget();
                            uploadTarget == TextureUploadTarget::Texture3D ||
                            uploadTarget == TextureUploadTarget::Texture2DArray ||
-                           uploadTarget == TextureUploadTarget::Texture1DArray ||
-                           uploadTarget == TextureUploadTarget::CubeMapArray ||
                            uploadTarget == TextureUploadTarget::Texture2DMultisampleArray) {
                     // Single slice/layer of a 3D or array texture: ES has no
                     // glFramebufferTexture3D, layers attach via glFramebufferTextureLayer.
@@ -2788,31 +2705,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return false;
         }
 
-        Bool IsFixedPointFallbackReadAttachment() {
-            const auto& readFBO =
-                MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read).GetBoundObject();
-            if (!readFBO) {
-                return false;
-            }
-            const auto readBuffer = readFBO->GetReadBuffer();
-            if (readBuffer < FramebufferAttachmentType::Color0 || readBuffer > FramebufferAttachmentType::Color31) {
-                return false;
-            }
-            // Any signed-normalized attachment, not just the ones currently substituted:
-            // ES has no GL_CLAMP_READ_COLOR at all, so even a natively stored SNORM buffer
-            // hands back the negative half that desktop GL clamps away.
-            const auto& attachmentObject = readFBO->GetAttachment(readBuffer);
-            if (attachmentObject.IsTexture()) {
-                const auto& textureObject = attachmentObject.GetTexture();
-                return textureObject && IsSnormFormat(textureObject->GetFormat());
-            }
-            if (attachmentObject.IsRenderbuffer()) {
-                const auto& renderbufferObject = attachmentObject.GetRenderbuffer();
-                return renderbufferObject && IsSnormFormat(renderbufferObject->GetInternalFormat());
-            }
-            return false;
-        }
-
         void BackendFramebufferObject::SyncReadBufferToBackend(
             const SharedPtr<MG_State::GLState::FramebufferObject>& stateFBOObject) {
             if (!stateFBOObject) {
@@ -2835,95 +2727,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        Bool BackendFramebufferObject::RecomputeBackendColorSlots(
-            const FramebufferObject::FramebufferAttachmentArray& stateDrawBuffers) {
-            // Only the first GL_MAX_COLOR_ATTACHMENTS points exist in the backend. The frontend's own
-            // limit (ValidateColorAttachmentInRange, which reads the clamped
-            // GetDynamicParameters().MaxColorAttachments) is never larger than this raw ES cap, so an
-            // index the frontend accepted is always < slotCount. Indices at or above it can never own
-            // an image and stay on their identity point - never touched, never a GL error.
-            const Uint slotCount =
-                std::min<Uint>(MAX_COLOR_ATTACHMENT_SLOTS,
-                               static_cast<Uint>(std::max<Int>(g_GLESCapabilities.MaxColorAttachments, 1)));
-
-            GLenum newSlots[MAX_COLOR_ATTACHMENT_SLOTS];
-            for (Uint i = 0; i < MAX_COLOR_ATTACHMENT_SLOTS; ++i) {
-                newSlots[i] = GL_COLOR_ATTACHMENT0 + i;
-            }
-            Bool assigned[MAX_COLOR_ATTACHMENT_SLOTS] = {false};
-            Bool slotTaken[MAX_COLOR_ATTACHMENT_SLOTS] = {false};
-
-            // 1. ES pins draw-buffer slot s to GL_COLOR_ATTACHMENTs, so an attachment named by draw
-            //    buffer slot s has no choice: its image must sit at backend point s. This has to
-            //    agree with the compaction the caller just pushed through glDrawBuffers.
-            for (Uint s = 0; s < FramebufferObject::MAX_DRAW_BUFFERS && s < slotCount; ++s) {
-                const auto frontendBuf = stateDrawBuffers[s];
-                if (frontendBuf < FramebufferAttachmentType::Color0 ||
-                    frontendBuf > FramebufferAttachmentType::Color31) {
-                    continue; // GL_NONE, or a default-framebuffer FRONT/BACK token: never relocated.
-                }
-                const Uint a =
-                    static_cast<Uint>(frontendBuf) - static_cast<Uint>(FramebufferAttachmentType::Color0);
-                // Neither guard may ever fire: a duplicate draw buffer is already INVALID_OPERATION
-                // and an out-of-range one is rejected by ValidateColorAttachmentInRange. If one did
-                // fire the table would disagree with the glDrawBuffers the caller already issued,
-                // which is the exact non-injectivity this table exists to remove.
-                MOBILEGL_ASSERT(a < slotCount && !assigned[a],
-                                "Draw buffer %u names colour attachment %u which is out of range or duplicated.", s,
-                                a);
-                if (a >= slotCount || assigned[a]) {
-                    continue;
-                }
-                newSlots[a] = GL_COLOR_ATTACHMENT0 + s;
-                assigned[a] = true;
-                slotTaken[s] = true;
-            }
-
-            // 2. Everything else keeps its identity point when that point survived step 1. This is
-            //    what makes the ordinary drawBuffers[s] == COLOR_ATTACHMENTs case a strict no-op:
-            //    the table stays identity, nothing moves, no attachment is re-issued.
-            for (Uint a = 0; a < slotCount; ++a) {
-                if (assigned[a] || slotTaken[a]) {
-                    continue;
-                }
-                newSlots[a] = GL_COLOR_ATTACHMENT0 + a;
-                assigned[a] = true;
-                slotTaken[a] = true;
-            }
-
-            // 3. What is left are attachments whose identity point step 1 took away. Park them on the
-            //    lowest free point. They are not draw buffers, so nothing is rendered through them;
-            //    they only have to stay addressable for glReadBuffer and blits, and the map has to
-            //    stay injective so reading one of them cannot land on another's image.
-            for (Uint a = 0; a < slotCount; ++a) {
-                if (assigned[a]) {
-                    continue;
-                }
-                for (Uint s = 0; s < slotCount; ++s) {
-                    if (!slotTaken[s]) {
-                        newSlots[a] = GL_COLOR_ATTACHMENT0 + s;
-                        assigned[a] = true;
-                        slotTaken[s] = true;
-                        break;
-                    }
-                }
-            }
-
-            Bool moved = false;
-            for (Uint a = 0; a < MAX_COLOR_ATTACHMENT_SLOTS; ++a) {
-                if (m_backendColorSlots[a] == newSlots[a]) {
-                    continue;
-                }
-                m_backendColorSlots[a] = newSlots[a];
-                moved = true;
-                // This attachment's image now belongs at a different backend point. Its frontend
-                // version has not changed, so the attachment loop would skip it; force it.
-                m_syncedFrontendAttachmentVersions[static_cast<SizeT>(FramebufferAttachmentType::Color0) + a] =
-                    static_cast<Uint16>(~0u);
-            }
-            return moved;
-        }
-
         void BackendFramebufferObject::SyncToBackend(
             const SharedPtr<MG_State::GLState::FramebufferObject>& stateFBOObject, FramebufferTarget asTarget) {
 #ifdef TRACY_ENABLE
@@ -2979,13 +2782,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     nEffectiveBuffers = i + 1;
                 }
                 g_GLESFuncs.glDrawBuffers(nEffectiveBuffers, m_backendDrawBuffers);
-                // The line above pinned backend point s to draw-buffer slot s, so the images have to
-                // be moved under those points. Rebuild the whole colour map and, when anything moved,
-                // also drop the read-buffer memo: SyncReadBufferToBackend keys it on the frontend
-                // enum alone, which does not change when the point under it does.
-                if (RecomputeBackendColorSlots(stateDrawBuffers)) {
-                    m_frontendReadBuffer = FramebufferAttachmentType::Unknown;
-                }
                 MGLOG_D("DBAPPLY beFbo=%u target=%d n=%d db0=0x%x feDb0=%d", m_backendFBOId, (int)asTarget,
                         nEffectiveBuffers, m_backendDrawBuffers[0], (int)stateDrawBuffers[0]);
             }
@@ -3031,22 +2827,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
                 // relevant FRONTEND!!! version should be checked and updated
                 if (m_syncedFrontendAttachmentVersions[i] != attachmentVersions[i]) {
-                    // SyncAttachmentObject only ever attaches: for an empty frontend attachment it
-                    // returns true and issues nothing, so the point keeps whatever was there. That is
-                    // what makes m_backendColorSlots a permutation of the PHYSICAL layout rather than
-                    // a claim about one - a point handed to an attachment with no image would
-                    // otherwise still hold the previous owner's image and glReadBuffer would return
-                    // it. Bounded by GL_MAX_COLOR_ATTACHMENTS because GL_COLOR_ATTACHMENTn above the
-                    // driver's limit is INVALID_ENUM, and restricted to colour points because
-                    // FRONT_LEFT/BACK_LEFT and co. are not ES attachment points at all.
-                    const Bool isColorPoint =
-                        frontendType >= FramebufferAttachmentType::Color0 &&
-                        frontendType <= FramebufferAttachmentType::Color31 &&
-                        (static_cast<Int>(frontendType) - static_cast<Int>(FramebufferAttachmentType::Color0)) <
-                            g_GLESCapabilities.MaxColorAttachments;
-                    if (isColorPoint && attachmentObject.IsEmpty() && glBackendAttachment != GL_NONE) {
-                        g_GLESFuncs.glFramebufferRenderbuffer(glFBOTarget, glBackendAttachment, GL_RENDERBUFFER, 0);
-                    }
                     if (SyncAttachmentObject(glFBOTarget, attachmentObject, glBackendAttachment)) {
                         m_syncedFrontendAttachmentVersions[i] = attachmentVersions[i];
                     }
@@ -3108,18 +2888,21 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         GLenum BackendFramebufferObject::GetBackendAttachmentType(FramebufferAttachmentType frontendAtt) const {
-            // Only colour attachments are ever relocated; depth/stencil, the default framebuffer's
-            // FRONT/BACK names and None map straight through.
-            if (frontendAtt < FramebufferAttachmentType::Color0 || frontendAtt > FramebufferAttachmentType::Color31) {
-                return MG_Util::ConvertFramebufferAttachmentTypeToGLEnum(frontendAtt);
+            GLenum glBackendReadBuffer = GL_NONE;
+            auto it = std::find(m_frontendDrawBuffers, m_frontendDrawBuffers + FramebufferObject::MAX_DRAW_BUFFERS,
+                                frontendAtt);
+            Bool notFound = (it == m_frontendDrawBuffers + FramebufferObject::MAX_DRAW_BUFFERS);
+            if (notFound) {
+                MGLOG_D(
+                    "%s: frontendAtt not found in draw buffer (probably not remapped), just use the same as frontend",
+                    __func__);
+                glBackendReadBuffer = MG_Util::ConvertFramebufferAttachmentTypeToGLEnum(frontendAtt);
+            } else {
+                MGLOG_D("%s: frontendAtt found in draw buffer, keep it consistent as in read buffers", __func__);
+                auto index = std::distance(m_frontendDrawBuffers, it);
+                glBackendReadBuffer = m_backendDrawBuffers[index];
             }
-            // The table is a permutation of the backend colour points, so this is the one point that
-            // owns this attachment. Searching the draw-buffer array instead returned the identity
-            // point for every attachment that was not a draw buffer - which is exactly the point a
-            // relocated draw buffer had just taken over, so COLOR_ATTACHMENT0 read back the image of
-            // whatever attachment was last made the draw buffer.
-            const Uint index = static_cast<Uint>(frontendAtt) - static_cast<Uint>(FramebufferAttachmentType::Color0);
-            return m_backendColorSlots[index];
+            return glBackendReadBuffer;
         }
 
         StateBackendObjectRegistry<MG_State::GLState::FramebufferObject, BackendFramebufferObject>
@@ -3424,7 +3207,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
     namespace PrgramImpl {
         Uint32 g_snormFallbackClampOutputMask = 0;
-        Uint g_fragColorBroadcastCount = 1;
         Uint32 g_unormFallbackClampOutputMask = 0;
         Uint g_lastUsedBackendProgramId = 0;
         StateBackendObjectRegistry<MG_State::GLState::ProgramObject, BackendProgramObjectImpl> g_backendProgramObjects;
@@ -3476,10 +3258,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
             MGLOG_D("Syncing program to backend. State program ID: %u, Backend ID: %u",
                     stateProgramObject->GetExternalIndex(), m_backendProgramId);
-            m_backendProgramUsable = true;
             m_snormFallbackClampOutputMask = g_snormFallbackClampOutputMask;
             m_unormFallbackClampOutputMask = g_unormFallbackClampOutputMask;
-            m_fragColorBroadcastCount = g_fragColorBroadcastCount;
 
             // Detach all existing shaders
             GLint attachedCount = 0;
@@ -3511,6 +3291,19 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
             auto& shaderSpirvs = stateProgramObject->GetGeneratedSpirv();
 
+            // Adreno's ESSL compiler mishandles gl_ClipDistance (rejects redeclarations,
+            // miscompiles non-constant-index writes and constant-index gl_in element reads,
+            // crashes on whole-array gl_in reads) and cannot dynamically index the global
+            // const struct[] LUTs SPIRV-Cross likes to emit. Gate the workarounds to
+            // Qualcomm; MOBILEGL_QUIRK_CLIP_DISTANCE overrides the device detection.
+            const MG_Config::QuirkOverride clipDistanceQuirkOverride =
+                MG_Config::Features.ClipDistanceQuirk;
+            const Bool applyClipDistanceQuirk =
+                clipDistanceQuirkOverride == MG_Config::QuirkOverride::ForceOn ||
+                (clipDistanceQuirkOverride == MG_Config::QuirkOverride::Auto &&
+                 pActiveBackendObject &&
+                 pActiveBackendObject->GetDynamicParameters().GpuVendor == GpuVendorKind::Qualcomm);
+
             for (int index = 0; index < attachedShaders.size(); ++index) {
                 auto& shader = attachedShaders[index];
                 GLenum glShaderType = MG_Util::ConvertShaderStageToGLEnum(shader->GetShaderStage());
@@ -3533,6 +3326,63 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     effectiveSpirv = &loweredSpirv;
                 }
 
+                // GL 3.3 only promises undefined *values* for out-of-bounds array indexing, but
+                // Adreno's ESSL compiler constant-folds a provably out-of-bounds local-array
+                // index into poison that corrupts the whole shader's output. Clamp every
+                // access-chain index to its declared bounds before transpiling.
+                Vector<unsigned int> clampedSpirv;
+                if (MG_Util::ShaderTranspiler::ShaderCompiler::ClampAccessChainIndicesForEssl(*effectiveSpirv,
+                                                                                              clampedSpirv) &&
+                    !clampedSpirv.empty()) {
+                    effectiveSpirv = &clampedSpirv;
+                } else {
+                    MGLOG_W("ClampAccessChainIndicesForEssl failed, continuing with unclamped SPIR-V.");
+                }
+
+                // SPIRV-Cross emulates 1D samplers as 2D for ES: it widens texelFetch coordinates
+                // to ivec2 but keeps the ConstOffset operand scalar, which is not a valid ESSL
+                // texelFetchOffset overload (Adreno rejects it). Fold the constant offset into the
+                // coordinate instead (texelFetchOffset(t,P,l,o) == texelFetch(t,P+o,l)).
+                Vector<unsigned int> foldedOffsetSpirv;
+                if (MG_Util::ShaderTranspiler::ShaderCompiler::FoldConstOffsetFor1DFetchForEssl(
+                        *effectiveSpirv, foldedOffsetSpirv) &&
+                    !foldedOffsetSpirv.empty()) {
+                    effectiveSpirv = &foldedOffsetSpirv;
+                } else {
+                    MGLOG_W("FoldConstOffsetFor1DFetchForEssl failed, continuing with unfolded SPIR-V.");
+                }
+
+                // Adreno quirk: shadow gl_ClipDistance in Private arrays so the transpiled
+                // ESSL only writes the builtin with literal constant indices (flushed before
+                // EmitVertex/return) and only reads gl_in clip distances through dynamic loop
+                // indices - the shapes this driver compiles correctly. Must run after the
+                // access-chain clamp above so the flush indices stay literal constants.
+                Vector<unsigned int> clipDistanceSpirv;
+                if (applyClipDistanceQuirk &&
+                    (glShaderType == GL_VERTEX_SHADER || glShaderType == GL_GEOMETRY_SHADER)) {
+                    if (MG_Util::ShaderTranspiler::ShaderCompiler::LowerClipDistanceForEssl(
+                            *effectiveSpirv, clipDistanceSpirv) &&
+                        !clipDistanceSpirv.empty()) {
+                        effectiveSpirv = &clipDistanceSpirv;
+                    } else {
+                        MGLOG_W("LowerClipDistanceForEssl failed, continuing with unlowered SPIR-V.");
+                    }
+                }
+
+                // Adreno quirk: split single constant-composite stores of struct arrays so
+                // SPIRV-Cross does not promote them to global const struct[] LUTs, which this
+                // driver cannot dynamically index ("Cannot offset into the structure").
+                Vector<unsigned int> structLutSpirv;
+                if (applyClipDistanceQuirk) {
+                    if (MG_Util::ShaderTranspiler::ShaderCompiler::DefeatConstStructArrayLutForEssl(
+                            *effectiveSpirv, structLutSpirv) &&
+                        !structLutSpirv.empty()) {
+                        effectiveSpirv = &structLutSpirv;
+                    } else {
+                        MGLOG_W("DefeatConstStructArrayLutForEssl failed, continuing with unsplit SPIR-V.");
+                    }
+                }
+
                 // ESSL stage-matches uniform blocks by member precision, but SPIRV-Cross prints
                 // a RelaxedPrecision member as explicit "mediump" in the vertex stage and as
                 // UNQUALIFIED (mediump-by-default) in the fragment stage; after
@@ -3562,16 +3412,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     effectiveSpirv = &noperspectiveSpirv;
                 }
 
-                // ES has no rectangle sampler, and SPIRV-Cross refuses the whole module rather
-                // than approximating one. The shared pass turns the type into the 2D one and
-                // divides the coordinate of every normalized-coordinate lookup by the texture
-                // size, which is the whole of the difference between the two.
-                Vector<unsigned int> rectLoweredSpirv;
-                if (MG_Util::ShaderTranspiler::ShaderCompiler::LowerRectImages(*effectiveSpirv, rectLoweredSpirv) &&
-                    !rectLoweredSpirv.empty()) {
-                    effectiveSpirv = &rectLoweredSpirv;
-                }
-
                 MG_Util::ShaderTranspiler::SpvcSession spvcSession(*effectiveSpirv,
                     MG_Util::ShaderTranspiler::SessionUsageBit::Transpile);
 
@@ -3594,7 +3434,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     r.log += spvcSession.GetLastErrorString();
                     r.errc = -5;
                     MGLOG_E("%s", r.log.c_str());
-                    m_backendProgramUsable = false;
                     continue;
                 }
 
@@ -3602,10 +3441,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
                 source = RebindImageUniformsToFrontendUnits(std::move(source), stateProgramObject);
                 source = RemoveLayoutBinding(source);
+                if (applyClipDistanceQuirk) {
+                    // Adreno rejects the gl_ClipDistance redeclaration SPIRV-Cross still emits
+                    // ("reserved built-in name") but accepts plain usage with
+                    // GL_EXT_clip_cull_distance required; drop the line, keep the #extension.
+                    source = RemoveClipDistanceRedeclaration(source);
+                }
                 source = ProcessOutColorLocations(source);
                 source = ForceFlatIntegerVaryings(source, glShaderType);
-                source = BroadcastLegacyFragColor(std::move(source), glShaderType, m_fragColorBroadcastCount);
-                source = EmulateTextureLodBias(source);
                 source = EmulateBaseInstanceInVertexShader(std::move(source), glShaderType);
                 source = PromoteDrawParameterGlobalsToUniforms(std::move(source), glShaderType);
                 source = ForceSupporterOutput(source);
@@ -3636,7 +3479,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     Vector<GLchar> log(logLength);
                     g_GLESFuncs.glGetShaderInfoLog(backendShaderId, logLength, nullptr, log.data());
                     MGLOG_E("Shader compilation failed for backend ID %u: %s", backendShaderId, log.data());
-                    m_backendProgramUsable = false;
                     continue;
                 }
 
@@ -3646,33 +3488,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 MGLOG_D("Processed shader source length: %zu", source.length());
             }
 
-            // Transform feedback capture runs on the real driver (see XfbImpl in
-            // DirectGLES.cpp), so the capture set has to be declared on the backend
-            // program before it links. SPIRV-Cross keeps user output names verbatim in
-            // the transpiled ESSL (`out vec4 result_0;` stays `result_0`), so the
-            // frontend's requested names carry over unchanged.
-            if (stateProgramObject->GetTransformFeedbackVaryingCount() > 0 &&
-                g_GLESFuncs.glTransformFeedbackVaryings != nullptr) {
-                const auto& xfbVaryings = stateProgramObject->GetTransformFeedbackVaryings();
-                Vector<const GLchar*> xfbNames;
-                xfbNames.reserve(xfbVaryings.size());
-                for (const auto& xfbVarying : xfbVaryings) {
-                    xfbNames.push_back(xfbVarying.name.c_str());
-                }
-                MGLOG_D("Declaring %zu transform feedback varyings on program %u", xfbNames.size(),
-                        m_backendProgramId);
-                g_GLESFuncs.glTransformFeedbackVaryings(m_backendProgramId, static_cast<GLsizei>(xfbNames.size()),
-                                                        xfbNames.data(),
-                                                        stateProgramObject->GetTransformFeedbackBufferMode());
-            }
-
             // Link program
             MGLOG_D("Linking program %u", m_backendProgramId);
             g_GLESFuncs.glLinkProgram(m_backendProgramId);
 
             GLint linkStatus;
             g_GLESFuncs.glGetProgramiv(m_backendProgramId, GL_LINK_STATUS, &linkStatus);
-            m_backendProgramUsable = m_backendProgramUsable && linkStatus == GL_TRUE;
             if (linkStatus != GL_TRUE) {
                 GLint logLength;
                 g_GLESFuncs.glGetProgramiv(m_backendProgramId, GL_INFO_LOG_LENGTH, &logLength);
@@ -3785,11 +3606,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 binding.backendLocation = backendLoc;
                 binding.uniformType = uniformType;
                 binding.lastAssignedUnit = -1;
-                // Present only for the samplers EmulateTextureLodBias actually rewrote; the
-                // pass names it after the sampler, which SPIRV-Cross preserves verbatim.
-                binding.lodBiasLocation =
-                    g_GLESFuncs.glGetUniformLocation(m_backendProgramId, (String(LOD_BIAS_UNIFORM_PREFIX) + name).c_str());
-                binding.lastAssignedLodBias = 0.0f;
                 m_samplerUniformBindings.push_back(binding);
             }
         }
@@ -3798,18 +3614,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            // glUseProgram on a program that did not link is an INVALID_OPERATION and
-            // leaves the *previous* program current, so the draw would silently render
-            // with an unrelated shader (KHR-GL3x.texture_size_promotion read another
-            // test case's alpha that way once a sampler2DRect stage failed to
-            // transpile). Bind nothing instead: the draw is then a visible no-op.
-            const Uint programToBind = m_backendProgramUsable ? m_backendProgramId : 0;
-            if (g_lastUsedBackendProgramId == programToBind) {
+            if (g_lastUsedBackendProgramId == m_backendProgramId) {
                 return;
             }
-            MGLOG_D("Using program %u", programToBind);
-            g_GLESFuncs.glUseProgram(programToBind);
-            g_lastUsedBackendProgramId = programToBind;
+            MGLOG_D("Using program %u", m_backendProgramId);
+            g_GLESFuncs.glUseProgram(m_backendProgramId);
+            g_lastUsedBackendProgramId = m_backendProgramId;
         }
 
         void BackendProgramObjectImpl::SetBaseInstance(Uint32 baseInstance) const {
@@ -3917,16 +3727,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 }
                 m_cacheSamplerParameters.maxAnisotropy = samplerParams.maxAnisotropy;
             }
-            if (m_cacheSamplerParameters.borderColor != samplerParams.borderColor) {
-                // Same gate as the texture-side border colour above.
-                if (g_GLESCapabilities.SupportsTextureBorderClamp && g_GLESFuncs.glSamplerParameterfv) {
-                    const GLfloat borderColorArray[4] = {
-                        samplerParams.borderColor.x(), samplerParams.borderColor.y(),
-                        samplerParams.borderColor.z(), samplerParams.borderColor.w()};
-                    g_GLESFuncs.glSamplerParameterfv(m_backendSamplerId, GL_TEXTURE_BORDER_COLOR, borderColorArray);
-                }
-                m_cacheSamplerParameters.borderColor = samplerParams.borderColor;
-            }
 #undef SYNC_SAMPLER_PARAM_IF_CHANGED
             m_isInitialized = true;
         }

MobileGL/MG_Backend/DirectGLES/Managers.h

@@ -258,6 +258,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
         private:
             Uint m_backendVAOId = 0;
             Array<Uint, MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS> m_clientAttributeBufferIds;
+            // Attribs the frontend has Enabled but that have no source at all (no buffer object
+            // and NULL client pointer). GL keeps such attribs latently enabled, but Adreno's ES
+            // driver treats them as client arrays and memcpys from address 0 at draw time
+            // (SIGSEGV), so they are kept disabled on the backend VAO until they gain a source.
+            Uint32 m_forceDisabledAttribsMask = 0;
             Bool m_isInitialized = false;
             Uint16 m_syncedIndexBufferVersion = 0;
             Array<MG_State::GLState::VertexAttributeVersion, MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS>
@@ -270,21 +275,18 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
     namespace TextureImpl {
         inline Bool IsSupportedTextureTarget(TextureTarget target) {
-            // Every desktop-only target is stored on an ES one; see MapToBackendTextureTarget.
-            (void)target;
-            return true;
+            // Rectangle textures need non-normalized sampling ES cannot express; everything else is
+            // either native or emulated (1D -> 2D with height 1, 1D array -> 2D array, see
+            // MapToBackendTextureTarget). SPIRV-Cross already emits the matching ESSL samplers and
+            // coordinate padding for 1D/1D-array shaders.
+            return target != TextureTarget::TextureRectangle;
         }
 
-        // ES has none of the desktop-only targets: 1D textures are stored as 2D (height 1), 1D
-        // arrays as 2D arrays (height 1, layers in depth), and rectangle textures as plain 2D -
-        // they are single-level and already clamp, so only the non-normalized coordinates differ.
-        // Must match the shader-side emulation: SPIRV-Cross handles 1D/1D-array itself, and
-        // ShaderCompiler::LowerRectImages rewrites rectangle images (declining any module
-        // whose lookups are not integer-coordinate, which SPIRV-Cross then still rejects).
+        // ES has no 1D targets: 1D textures are stored as 2D (height 1) and 1D arrays as 2D arrays
+        // (height 1, layers in depth). Must match SPIRV-Cross's ES 1D-as-2D shader emulation.
         inline TextureTarget MapToBackendTextureTarget(TextureTarget target) {
             switch (target) {
             case TextureTarget::Texture1D:
-            case TextureTarget::TextureRectangle:
                 return TextureTarget::Texture2D;
             case TextureTarget::Texture1DArray:
                 return TextureTarget::Texture2DArray;
@@ -300,7 +302,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
         inline GLenum ConvertTextureUploadTargetToBackendGLEnum(TextureUploadTarget uploadTarget) {
             switch (uploadTarget) {
             case TextureUploadTarget::Texture1D:
-            case TextureUploadTarget::TextureRectangle:
                 return GL_TEXTURE_2D;
             case TextureUploadTarget::Texture1DArray:
                 return GL_TEXTURE_2D_ARRAY;
@@ -433,28 +434,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                this array could be provided as data directly to ES `glDrawBuffers` function
              */
             GLenum m_backendDrawBuffers[MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS] = {GL_NONE};
-
-            static constexpr Uint MAX_COLOR_ATTACHMENT_SLOTS =
-                static_cast<Uint>(FramebufferAttachmentType::Color31) -
-                static_cast<Uint>(FramebufferAttachmentType::Color0) + 1;
-            /* Where each frontend GL_COLOR_ATTACHMENTn image physically lives in the backend ES
-               framebuffer, as a GL_COLOR_ATTACHMENTm enum. ES only accepts glDrawBuffers bufs[s] ==
-               GL_COLOR_ATTACHMENTs, so a GL draw-buffer slot s naming attachment a forces a's image
-               under backend slot s. This table is the single owner of that decision and is kept a
-               PERMUTATION of the backend colour slots: every other attachment keeps its identity
-               slot when that slot survived, and is parked on the lowest free slot when it did not.
-               Deriving the point per-query from the draw-buffer array instead handed the identity
-               point to any attachment that was not a draw buffer - i.e. exactly the point a
-               relocated draw buffer had just taken over. The permutation is only true of the
-               PHYSICAL framebuffer because the attachment loop detaches a point whose frontend
-               owner is empty; do not remove that detach. */
-            GLenum m_backendColorSlots[MAX_COLOR_ATTACHMENT_SLOTS] = {GL_NONE};
-            /* Rebuild m_backendColorSlots from the frontend draw-buffer array. Returns true when any
-               attachment moved, i.e. when the physical attachments and the memoised read buffer have
-               to be re-applied. */
-            Bool RecomputeBackendColorSlots(
-                const MG_State::GLState::FramebufferObject::FramebufferAttachmentArray& stateDrawBuffers);
-
             FramebufferAttachmentType m_frontendReadBuffer = FramebufferAttachmentType::Color0;
             GLenum m_backendReadBuffer = GL_COLOR_ATTACHMENT0;
 
@@ -464,13 +443,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         extern StateBackendObjectRegistry<MG_State::GLState::FramebufferObject, BackendFramebufferObject>
             g_backendFramebufferObjects;
-        // True when the read buffer names a fixed-point (norm/snorm) attachment that the
-        // backend actually stores in a floating-point format. GL clamps a read from a
-        // fixed-point colour buffer to [0,1] (GL_CLAMP_READ_COLOR defaults to
-        // GL_FIXED_ONLY); the substituted float storage would not, so the readback path
-        // has to apply the clamp itself.
-        Bool IsFixedPointFallbackReadAttachment();
-
         extern Array<Uint16, SizeT(FramebufferTarget::FramebufferTargetCount)> g_fboBindVersions;
         // Tracks the bound FBO's object version (bumped on any attachment/drawbuffer change)
         // per target: re-attaching textures or changing draw buffers on an already-bound FBO
@@ -609,12 +581,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 Int backendLocation = -1;
                 GLenum uniformType = 0;
                 Int lastAssignedUnit = -1;
-                // Location of this sampler's emulated GL_TEXTURE_LOD_BIAS uniform
-                // (PrgramImpl::EmulateTextureLodBias), -1 when the shader has none.
-                // lastAssignedLodBias mirrors the value the program currently holds,
-                // so an unbiased shader issues no per-draw glUniform1f at all.
-                Int lodBiasLocation = -1;
-                Float lastAssignedLodBias = 0.0f;
             };
 
             BackendProgramObjectImpl();
@@ -626,14 +592,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
             void SetDrawID(Uint32 drawId) const;
             Int GetIndirectParamsBinding() const { return m_indirectParamsBinding; }
             Uint GetBackendProgramId() const { return m_backendProgramId; }
-            // False when the last SyncToBackend could not produce a usable program (a
-            // shader failed to transpile or compile, or the link itself failed). Use()
-            // must not leave the previously bound program current in that case.
-            Bool IsBackendProgramUsable() const { return m_backendProgramUsable; }
             Uint GetBackendGlobalUBOId() const { return m_backendGlobalUBOId; }
             Uint32 GetSnormFallbackClampOutputMask() const { return m_snormFallbackClampOutputMask; }
             Uint32 GetUnormFallbackClampOutputMask() const { return m_unormFallbackClampOutputMask; }
-            Uint GetFragColorBroadcastCount() const { return m_fragColorBroadcastCount; }
 
             Bool HasGlobalUboBlock() const { return m_globalUboBackendBlockIndex >= 0; }
             const Vector<Int>& GetUniformBlockBackendIndices() const { return m_uniformBlockBackendIndices; }
@@ -660,11 +621,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             Int m_indirectParamsBinding = -1;
             Uint32 m_snormFallbackClampOutputMask = 0;
             Uint32 m_unormFallbackClampOutputMask = 0;
-            // Draw buffers a legacy gl_FragColor write has to reach (see
-            // PrgramImpl::BroadcastLegacyFragColor); 1 keeps the plain single-output shader.
-            Uint m_fragColorBroadcastCount = 1;
             Bool m_isInitialized = false;
-            Bool m_backendProgramUsable = false;
 
             Int m_globalUboBackendBlockIndex = -1;
             Int m_globalUboBackendBlockSize = 0;
@@ -677,10 +634,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         extern Uint32 g_snormFallbackClampOutputMask;
         extern Uint32 g_unormFallbackClampOutputMask;
-        // Draw buffers the current draw framebuffer enables. Like the clamp masks above it
-        // is framebuffer state that the shader has to be compiled against, so a program
-        // whose snapshot no longer matches is relinked.
-        extern Uint g_fragColorBroadcastCount;
         // Backend id of the last glUseProgram issued through this backend; lets Use()
         // skip redundant rebinds. Reset to 0 wherever glUseProgram(0) is issued or the
         // ES context is recreated.

MobileGL/MG_Backend/DirectGLES/Utils.cpp

@@ -22,9 +22,6 @@
 #include <MG_Util/Math/SmallFloat.h>
 
 #include <cmath>
-#include <cctype>
-#include <cstring>
-#include <regex>
 
 namespace MobileGL::MG_Backend::DirectGLES {
     namespace {
@@ -48,40 +45,15 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return options;
         }
 
-        Flags<PixelFormatNormalizeOptionBit>
-        GetRuntimeFallbackNormalizeOptions(GLenum requestedInternalFormat,
-                                           Flags<PixelFormatNormalizeOptionBit> extraOptions) {
+        Flags<PixelFormatNormalizeOptionBit> GetRuntimeFallbackNormalizeOptions(GLenum requestedInternalFormat) {
             using namespace MG_Util::TextureFormatProcessor;
-            const Flags<PixelFormatNormalizeOptionBit> forcedOptions = GetApplicablePixelFormatNormalizeOptions(
-                requestedInternalFormat, GetForcedPixelFormatNormalizeOptions() | extraOptions);
+            const Flags<PixelFormatNormalizeOptionBit> forcedOptions =
+                GetApplicablePixelFormatNormalizeOptions(requestedInternalFormat, GetForcedPixelFormatNormalizeOptions());
             if (forcedOptions) {
                 return forcedOptions;
             }
-            return GetApplicablePixelFormatNormalizeOptions(
-                requestedInternalFormat, GetDriverPixelFormatNormalizeOptions() | extraOptions);
-        }
-
-        // Multisample textures can only ever be rendered into, never uploaded to, so a fallback
-        // format for them has to stay colour-renderable - a three-channel float fallback is a legal
-        // ES texture format but not a legal multisample storage format. Widening to four channels
-        // is safe here precisely because there is no transfer path that would have to expand
-        // three-channel client data, and the alpha the draw writes for a three-channel source is
-        // already the 1.0 the frontend format implies.
-        Bool TargetRequiresRenderableFormat(SizeT targetIndex) {
-            return targetIndex == static_cast<SizeT>(TextureTarget::Texture2DMultisample) ||
-                   targetIndex == static_cast<SizeT>(TextureTarget::Texture2DMultisampleArray);
-        }
-
-        Flags<PixelFormatNormalizeOptionBit> GetRenderTargetNormalizeOptions(SizeT targetIndex) {
-            Flags<PixelFormatNormalizeOptionBit> options;
-            if (!TargetRequiresRenderableFormat(targetIndex)) {
-                return options;
-            }
-            options |= PixelFormatNormalizeOptionBit::NoThreeChannelRenderTarget;
-            if (!g_GLESCapabilities.SupportsRenderSnorm || !g_GLESCapabilities.SupportsNorm16Texture) {
-                options |= PixelFormatNormalizeOptionBit::NoSnorm16RenderTarget;
-            }
-            return options;
+            return GetApplicablePixelFormatNormalizeOptions(requestedInternalFormat,
+                                                            GetDriverPixelFormatNormalizeOptions());
         }
 
         Bool HasCachedFormatCapability(TextureInternalFormat internalFormat,
@@ -141,8 +113,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             const GLenum requestedInternalFormat = MG_Util::ConvertTextureInternalFormatToGLEnum(internalFormat);
             Flags<PixelFormatNormalizeOptionBit> options;
             if (!pActiveBackendObject || ShouldUseCaveatFormat(internalFormat, targetIndex)) {
-                options = GetRuntimeFallbackNormalizeOptions(requestedInternalFormat,
-                                                             GetRenderTargetNormalizeOptions(targetIndex));
+                options = GetRuntimeFallbackNormalizeOptions(requestedInternalFormat);
             }
             NormalizePixelFormat(requestedInternalFormat, options, outInternalFormat, outFormat, outType);
         }
@@ -177,22 +148,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
         Bool ShouldUseCaveatRenderbufferFormat(TextureInternalFormat internalFormat) {
             return ShouldUseCaveatFormat(internalFormat, GetRenderbufferFormatCapabilityTargetIndex());
         }
-
-        Bool BackendTextureFormatAddsAlpha(TextureInternalFormat internalFormat, TextureTarget target) {
-            const SizeT targetIndex =
-                target == TextureTarget::Unknown ? kFormatCapabilityTargetCount : GetFormatCapabilityTargetIndex(target);
-            if (!TargetRequiresRenderableFormat(targetIndex)) {
-                return false;
-            }
-            if (pActiveBackendObject && !ShouldUseCaveatFormat(internalFormat, targetIndex)) {
-                return false;
-            }
-            const GLenum requestedInternalFormat = MG_Util::ConvertTextureInternalFormatToGLEnum(internalFormat);
-            const Flags<PixelFormatNormalizeOptionBit> options =
-                GetRuntimeFallbackNormalizeOptions(requestedInternalFormat,
-                                                   GetRenderTargetNormalizeOptions(targetIndex));
-            return static_cast<Bool>(options & PixelFormatNormalizeOptionBit::NoThreeChannelRenderTarget);
-        }
     } // namespace TextureImpl
     namespace PrgramImpl {
         String ProcessOutColorLocations(const String& glslCode) {
@@ -321,55 +276,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return glslCode;
         }
 
-        String BroadcastLegacyFragColor(String glslCode, GLenum shaderType, Uint drawBufferCount) {
-#ifdef TRACY_ENABLE
-            ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
-#endif
-            // The name is the marker: ShaderSourceProcessor only emits it when the source
-            // wrote gl_FragColor, and such a shader can have no other output.
-            static const char* const kLoweredName = "mg_FragColor";
-            if (shaderType != GL_FRAGMENT_SHADER || drawBufferCount <= 1) {
-                return glslCode;
-            }
-            static const std::regex declRegex(
-                R"(layout\s*\(\s*location\s*=\s*0\s*\)\s*out\s+((?:lowp|mediump|highp)\s+)?vec4\s+mg_FragColor\s*;)");
-            std::smatch declMatch;
-            if (!std::regex_search(glslCode, declMatch, declRegex)) {
-                return glslCode;
-            }
-            const String precision = declMatch[1].matched ? declMatch[1].str() : String();
-
-            String replicaDecls;
-            String replicaCopies;
-            for (Uint location = 1; location < drawBufferCount; ++location) {
-                const String name = String(kLoweredName) + "_" + std::to_string(location);
-                replicaDecls += "\nlayout(location = " + std::to_string(location) + ") out " + precision + "vec4 " +
-                                name + ";";
-                replicaCopies += "\n    " + name + " = " + kLoweredName + ";";
-            }
-
-            static const std::regex mainRegex(R"(void\s+main\s*\([^)]*\)\s*\{)");
-            std::smatch mainMatch;
-            if (!std::regex_search(glslCode, mainMatch, mainRegex)) {
-                return glslCode;
-            }
-            SizeT bracePos = static_cast<SizeT>(mainMatch.position(0) + mainMatch.length(0) - 1);
-            Int depth = 0;
-            for (SizeT pos = bracePos; pos < glslCode.size(); ++pos) {
-                if (glslCode[pos] == '{') {
-                    ++depth;
-                } else if (glslCode[pos] == '}') {
-                    --depth;
-                    if (depth == 0) {
-                        glslCode.insert(pos, replicaCopies + "\n");
-                        break;
-                    }
-                }
-            }
-            glslCode.insert(static_cast<SizeT>(declMatch.position(0)) + declMatch[0].str().size(), replicaDecls);
-            return glslCode;
-        }
-
         String ForceFlatIntegerVaryings(const String& glslCode, GLenum shaderType) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
@@ -437,166 +343,40 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return result;
         }
 
-        namespace {
-            // How a lookup carries its level of detail, and how many arguments it takes
-            // before the optional bias.
-            struct LodLookupForm {
-                const char* name;
-                Int requiredArgs; // arguments before the optional bias (implicit form)
-                Int explicitLodArg; // index of the explicit LOD argument, -1 for implicit
-            };
-
-            // texelFetch* is deliberately absent: an integer fetch names its level directly
-            // and takes no LOD bias. textureGather has no bias either. textureGrad* derives
-            // the LOD from gradients and offers no argument to fold a bias into, so it is
-            // left alone rather than rewritten incorrectly.
-            constexpr LodLookupForm LOD_LOOKUP_FORMS[] = {
-                {"textureProjLodOffset", 0, 2}, {"textureProjOffset", 4, -1}, {"textureProjLod", 0, 2},
-                {"textureLodOffset", 0, 2},     {"textureOffset", 3, -1},     {"textureProj", 2, -1},
-                {"textureLod", 0, 2},           {"texture", 2, -1},
-            };
-
-            // Sampler types with no mip chain, or whose GLSL lookups have no bias overload
-            // at all (the array-shadow forms), so nothing can or should be folded in.
-            Bool IsBiasableSamplerType(const String& samplerType) {
-                if (samplerType.find("MS") != String::npos) return false;      // multisample
-                if (samplerType.find("Buffer") != String::npos) return false;  // texture buffer
-                if (samplerType.find("Rect") != String::npos) return false;    // rectangle: no mips
-                if (samplerType == "sampler2DArrayShadow") return false;
-                if (samplerType == "samplerCubeArrayShadow") return false;
-                return true;
-            }
-
-            Bool IsIdentifierChar(char c) { return std::isalnum(static_cast<unsigned char>(c)) || c == '_'; }
-
-            // Byte offsets of the top-level argument separators and of the closing paren,
-            // starting from the '(' at openParen. Empty when the parentheses do not balance.
-            Vector<SizeT> SplitCallArguments(const String& code, SizeT openParen) {
-                Vector<SizeT> marks;
-                Int depth = 0;
-                for (SizeT i = openParen; i < code.size(); ++i) {
-                    const char c = code[i];
-                    if (c == '(' || c == '[') {
-                        ++depth;
-                    } else if (c == ']') {
-                        --depth;
-                    } else if (c == ')') {
-                        --depth;
-                        if (depth == 0) {
-                            marks.push_back(i);
-                            return marks;
-                        }
-                    } else if (c == ',' && depth == 1) {
-                        marks.push_back(i);
-                    }
-                }
-                return {};
-            }
-        } // namespace
-
-        String EmulateTextureLodBias(const String& glslCode) {
+        String RemoveClipDistanceRedeclaration(const String& glslCode) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            if (glslCode.find("sampler") == String::npos || glslCode.find("texture") == String::npos) {
-                return glslCode;
-            }
+            // Adreno rejects any redeclaration of gl_ClipDistance/gl_CullDistance ("reserved
+            // built-in name") even with GL_EXT_clip_cull_distance required, but accepts plain
+            // usage of the builtin. Drop the desktop-style redeclaration line SPIRV-Cross
+            // prints; the "#extension GL_EXT_clip_cull_distance : require" line stays.
+            static const std::regex redeclarationRegex(
+                R"(^\s*(?:out|in)\s+(?:(?:high|medium|low)p\s+)?float\s+gl_(?:Clip|Cull)Distance\[[0-9]+\];\s*$)");
 
-            // Collect the mip-capable sampler uniforms this shader declares.
-            static const std::regex samplerDeclRegex(
-                R"(uniform\s+(?:(?:highp|mediump|lowp)\s+)?([iu]?sampler[A-Za-z0-9]*)\s+([A-Za-z_][A-Za-z0-9_]*)\s*;)");
-            UnorderedMap<String, String> samplerNames; // name -> bias uniform name
-            for (std::sregex_iterator it(glslCode.begin(), glslCode.end(), samplerDeclRegex), end; it != end; ++it) {
-                const String samplerType = (*it)[1].str();
-                if (!IsBiasableSamplerType(samplerType)) continue;
-                const String name = (*it)[2].str();
-                samplerNames.emplace(name, String(LOD_BIAS_UNIFORM_PREFIX) + name);
-            }
-            if (samplerNames.empty()) {
-                return glslCode;
-            }
+            String result;
+            result.reserve(glslCode.size());
+            SizeT lineStart = 0;
+            Bool firstLine = true;
+            while (lineStart <= glslCode.size()) {
+                SizeT lineEnd = glslCode.find('\n', lineStart);
+                const Bool lastLine = lineEnd == String::npos;
+                String line = glslCode.substr(lineStart, lastLine ? String::npos : lineEnd - lineStart);
 
-            // Rewrite the lookups. Right-to-left so earlier offsets stay valid, and only for
-            // samplers named directly as the first argument (SPIRV-Cross never produces an
-            // expression there for ES output, which has no separate sampler objects).
-            String result = glslCode;
-            Vector<String> usedSamplers;
-            for (SizeT scan = result.size(); scan-- > 0;) {
-                if (result[scan] != 't') continue;
-                if (scan > 0 && IsIdentifierChar(result[scan - 1])) continue;
-
-                const LodLookupForm* form = nullptr;
-                SizeT openParen = 0;
-                for (const auto& candidate : LOD_LOOKUP_FORMS) {
-                    const SizeT nameLength = std::strlen(candidate.name);
-                    if (result.compare(scan, nameLength, candidate.name) != 0) continue;
-                    SizeT after = result.find_first_not_of(" \t", scan + nameLength);
-                    if (after == String::npos || result[after] != '(') continue;
-                    form = &candidate;
-                    openParen = after;
+                if (!std::regex_match(line, redeclarationRegex)) {
+                    if (!firstLine) {
+                        result += '\n';
+                    }
+                    result += line;
+                    firstLine = false;
+                }
+                if (lastLine) {
                     break;
                 }
-                if (form == nullptr) continue;
-
-                const Vector<SizeT> marks = SplitCallArguments(result, openParen);
-                if (marks.empty()) continue;
-                const SizeT argCount = marks.size();
-                const SizeT closeParen = marks.back();
-
-                // First argument must be one of our samplers.
-                const SizeT firstArgStart = result.find_first_not_of(" \t", openParen + 1);
-                SizeT firstArgEnd = marks.front();
-                while (firstArgEnd > firstArgStart && (result[firstArgEnd - 1] == ' ' || result[firstArgEnd - 1] == '\t')) {
-                    --firstArgEnd;
-                }
-                if (firstArgStart == String::npos || firstArgEnd <= firstArgStart) continue;
-                const String samplerName = result.substr(firstArgStart, firstArgEnd - firstArgStart);
-                const auto samplerIt = samplerNames.find(samplerName);
-                if (samplerIt == samplerNames.end()) continue;
-
-                const String& biasName = samplerIt->second;
-                if (form->explicitLodArg >= 0) {
-                    // Explicit LOD: the bias adds to it, as Vulkan does for
-                    // OpImageSampleExplicitLod and as the CTS reference expects.
-                    const SizeT lodIndex = static_cast<SizeT>(form->explicitLodArg);
-                    if (argCount <= lodIndex) continue;
-                    const SizeT lodStart = marks[lodIndex - 1] + 1;
-                    const SizeT lodEnd = marks[lodIndex];
-                    result.insert(lodEnd, String(") + ") + biasName + ")");
-                    result.insert(lodStart, "((");
-                } else {
-                    const SizeT required = static_cast<SizeT>(form->requiredArgs);
-                    if (argCount == required) {
-                        result.insert(closeParen, String(", ") + biasName);
-                    } else if (argCount == required + 1) {
-                        const SizeT biasStart = marks[argCount - 2] + 1;
-                        result.insert(closeParen, String(") + ") + biasName + ")");
-                        result.insert(biasStart, "((");
-                    } else {
-                        continue;
-                    }
-                }
-                usedSamplers.push_back(samplerName);
-            }
-            if (usedSamplers.empty()) {
-                return glslCode;
-            }
-
-            // Declare the bias uniforms that were actually referenced, right after the
-            // sampler declaration line they belong to.
-            for (const auto& samplerName : usedSamplers) {
-                const String& biasName = samplerNames[samplerName];
-                if (result.find(String("float ") + biasName + ";") != String::npos) continue;
-                const std::regex declRegex(
-                    R"(uniform\s+(?:(?:highp|mediump|lowp)\s+)?[iu]?sampler[A-Za-z0-9]*\s+)" + samplerName + R"(\s*;)");
-                std::smatch match;
-                if (!std::regex_search(result, match, declRegex)) continue;
-                const SizeT declEnd = static_cast<SizeT>(match.position(0)) + match[0].str().size();
-                result.insert(declEnd, String("\nuniform highp float ") + biasName + ";");
+                lineStart = lineEnd + 1;
             }
             return result;
         }
-
     } // namespace PrgramImpl
 
     namespace Utils {

MobileGL/MG_Backend/DirectGLES/Utils.h

@@ -40,11 +40,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
         void GenerateRenderbufferFormatInfo(TextureInternalFormat internalFormat, GLenum* outInternalFormat,
                                             GLenum* outFormat, GLenum* outType);
         Bool ShouldUseCaveatTextureFormat(TextureInternalFormat internalFormat, TextureTarget target);
-
-        // True when the format the texture is actually created with has an alpha channel the
-        // frontend format does not (the three-channel multisample widening). GL reads such a
-        // channel back as 1.0, so any swizzle source of ALPHA has to be answered with ONE.
-        Bool BackendTextureFormatAddsAlpha(TextureInternalFormat internalFormat, TextureTarget target);
         Bool ShouldUseCaveatRenderbufferFormat(TextureInternalFormat internalFormat);
     } // namespace TextureImpl
 
@@ -109,26 +104,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         String ClampNormFallbackOutputs(String glslCode, GLenum shaderType, Uint32 snormOutputMask,
                                         Uint32 unormOutputMask);
         String ForceFlatIntegerVaryings(const String& glslCode, GLenum shaderType);
-        // Legacy GLSL's gl_FragColor is broadcast to every enabled draw buffer (GL 4.6
-        // 15.2.3), but ShaderSourceProcessor lowers it to the single output mg_FragColor,
-        // which only ever reaches draw buffer 0. Replicates it across `drawBufferCount`
-        // outputs and copies the value into them at the end of main. A no-op for
-        // drawBufferCount <= 1, i.e. for everything but a framebuffer that actually
-        // enables several draw buffers, so the ordinary single-target shader is untouched.
-        String BroadcastLegacyFragColor(String glslCode, GLenum shaderType, Uint drawBufferCount);
         String RemoveLayoutBinding(const String& glslCode);
-        // Prefix of the per-sampler float uniform that carries GL_TEXTURE_LOD_BIAS into
-        // the shader (see EmulateTextureLodBias); the suffix is the sampler's own name.
-        constexpr const char* LOD_BIAS_UNIFORM_PREFIX = "mg_lodBias_";
-        // ES has no per-texture/sampler LOD bias at all (GL_TEXTURE_LOD_BIAS is desktop
-        // only; Vulkan spells it VkSamplerCreateInfo::mipLodBias), so it has to reach the
-        // shader as a uniform and be folded into every lookup's level of detail. Declares
-        // one `uniform highp float mg_lodBias_<sampler>;` per mip-capable sampler and adds
-        // it to the bias / explicit-LOD argument of every lookup that takes one. Draws push
-        // the bound texture's (or sampler object's) value into it; a shader whose samplers
-        // all have a zero bias is therefore unaffected. Returns the source unchanged when
-        // there is nothing to rewrite.
-        String EmulateTextureLodBias(const String& glslCode);
+        String RemoveClipDistanceRedeclaration(const String& glslCode);
     } // namespace PrgramImpl
 
     namespace Utils {

MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp

@@ -18,7 +18,6 @@
 #include "MG_Util/Texture/TextureFormatProcessor.h"
 
 #include <Config.h>
-#include <cmath>
 #include <cstdlib>
 #include <cstring>
 
@@ -41,11 +40,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Bool IsLayeredTarget(TextureTarget target) {
             return target == TextureTarget::Texture3D || target == TextureTarget::Texture1DArray ||
                    target == TextureTarget::Texture2DArray || target == TextureTarget::TextureCubeMap ||
-                   target == TextureTarget::TextureCubeMapArray || target == TextureTarget::Texture2DMultisampleArray;
+                   target == TextureTarget::TextureCubeMapArray ||
+                   target == TextureTarget::Texture2DMultisampleArray;
         }
 
         Bool IsMultisampleTarget(TextureTarget target) {
-            return target == TextureTarget::Texture2DMultisample || target == TextureTarget::Texture2DMultisampleArray;
+            return target == TextureTarget::Texture2DMultisample ||
+                   target == TextureTarget::Texture2DMultisampleArray;
         }
 
         Bool IsTextureBufferTarget(TextureTarget target) {
@@ -57,8 +58,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             GLenum normalizedInternalFormat = glFormat;
             GLenum imageFormat = GL_RGBA;
             GLenum imageType = GL_UNSIGNED_BYTE;
-            MG_Util::TextureFormatProcessor::NormalizePixelFormat(glFormat, PixelFormatNormalizeOptionBit::None,
-                                                                  &normalizedInternalFormat, &imageFormat, &imageType);
+            MG_Util::TextureFormatProcessor::NormalizePixelFormat(
+                glFormat, PixelFormatNormalizeOptionBit::None, &normalizedInternalFormat, &imageFormat, &imageType);
             return imageFormat == GL_RED_INTEGER || imageFormat == GL_RG_INTEGER || imageFormat == GL_RGB_INTEGER ||
                    imageFormat == GL_RGBA_INTEGER;
         }
@@ -79,7 +80,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return caps;
         }
 
-        FormatCapabilityFlags BuildVulkanCaps(TextureInternalFormat logicalFormat, TextureTarget target,
+        FormatCapabilityFlags BuildVulkanCaps(TextureInternalFormat logicalFormat,
+                                              TextureTarget target,
                                               VkFormatFeatureFlags features) {
             FormatCapabilityFlags caps;
             const Bool isDepth = MG_Util::IsDepthFormatInternalFormat(logicalFormat);
@@ -98,7 +100,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             const Bool sampled = (features & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT) != 0;
             const Bool linearFilter = (features & VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT) != 0;
             const Bool colorRenderable = (features & VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT) != 0;
-            const Bool depthStencilRenderable = (features & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) != 0;
+            const Bool depthStencilRenderable =
+                (features & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) != 0;
             const Bool renderable = (isDepth || isStencil) ? depthStencilRenderable : colorRenderable;
 
             if (sampled || renderable) {
@@ -195,20 +198,21 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         Bool HasNewCaveatFormatCaps(FormatCapabilityFlags nativeCaps, FormatCapabilityFlags fallbackCaps) {
             for (FormatCapability capability : kReportedFormatCapabilities) {
-                if (HasFormatCapability(fallbackCaps, capability) && !HasFormatCapability(nativeCaps, capability)) {
+                if (HasFormatCapability(fallbackCaps, capability) &&
+                    !HasFormatCapability(nativeCaps, capability)) {
                     return true;
                 }
             }
             return false;
         }
 
-        void LogVulkanFormatCaveat(TextureInternalFormat logicalFormat, SizeT targetIndex,
+        void LogVulkanFormatCaveat(TextureInternalFormat logicalFormat,
+                                   SizeT targetIndex,
                                    TextureInternalFormat fallbackFormat) {
-            MGLOG_D(
-                "Caveat: %s %s not fully supported. Reason: native Vulkan format is not fully supported. Fallback: %s",
-                GetFormatCapabilityTargetName(targetIndex).c_str(),
-                MG_Util::ConvertTextureInternalFormatToString(logicalFormat).c_str(),
-                MG_Util::ConvertTextureInternalFormatToString(fallbackFormat).c_str());
+            MGLOG_D("Caveat: %s %s not fully supported. Reason: native Vulkan format is not fully supported. Fallback: %s",
+                    GetFormatCapabilityTargetName(targetIndex).c_str(),
+                    MG_Util::ConvertTextureInternalFormatToString(logicalFormat).c_str(),
+                    MG_Util::ConvertTextureInternalFormatToString(fallbackFormat).c_str());
         }
 
         Vector<Int> BuildSampleCounts(Int maxSamples) {
@@ -252,15 +256,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
                 for (SizeT targetIndex = 0; targetIndex < kFormatCapabilityTextureTargetCount; ++targetIndex) {
                     const auto target = static_cast<TextureTarget>(targetIndex);
-                    const VkFormatFeatureFlags nativeFeatures = IsTextureBufferTarget(target)
-                                                                    ? nativeProperties.bufferFeatures
-                                                                    : nativeProperties.optimalTilingFeatures;
+                    const VkFormatFeatureFlags nativeFeatures =
+                        IsTextureBufferTarget(target) ? nativeProperties.bufferFeatures
+                                                      : nativeProperties.optimalTilingFeatures;
                     FormatCapabilityFlags nativeCaps = BuildVulkanCaps(logicalFormat, target, nativeFeatures);
                     cache.FullCaps[targetIndex][formatIndex] |= nativeCaps;
 
-                    const VkFormatFeatureFlags fallbackFeatures = IsTextureBufferTarget(target)
-                                                                      ? fallbackProperties.bufferFeatures
-                                                                      : fallbackProperties.optimalTilingFeatures;
+                    const VkFormatFeatureFlags fallbackFeatures =
+                        IsTextureBufferTarget(target) ? fallbackProperties.bufferFeatures
+                                                      : fallbackProperties.optimalTilingFeatures;
                     FormatCapabilityFlags fallbackCaps = BuildVulkanCaps(logicalFormat, target, fallbackFeatures);
                     if (fallbackFormat != VK_FORMAT_UNDEFINED && fallbackFormat != nativeFormat) {
                         cache.CaveatCaps[targetIndex][formatIndex] |= fallbackCaps;
@@ -295,8 +299,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 cache.FullCaps[renderbufferTargetIndex][formatIndex] |= renderbufferCaps;
 
                 if (fallbackFormat != VK_FORMAT_UNDEFINED && fallbackFormat != nativeFormat) {
-                    FormatCapabilityFlags fallbackRenderbufferCaps = BuildVulkanCaps(
-                        logicalFormat, TextureTarget::Texture2D, fallbackProperties.optimalTilingFeatures);
+                    FormatCapabilityFlags fallbackRenderbufferCaps =
+                        BuildVulkanCaps(logicalFormat, TextureTarget::Texture2D,
+                                        fallbackProperties.optimalTilingFeatures);
                     fallbackRenderbufferCaps &= FormatCapability::Creatable;
                     if ((fallbackProperties.optimalTilingFeatures &
                          (VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT | VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)) !=
@@ -305,7 +310,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                         fallbackRenderbufferCaps |= FormatCapability::MultisampleRenderbuffer;
                     }
                     cache.CaveatCaps[renderbufferTargetIndex][formatIndex] |= fallbackRenderbufferCaps;
-                    if (fallbackLogicalFormat && HasNewCaveatFormatCaps(renderbufferCaps, fallbackRenderbufferCaps)) {
+                    if (fallbackLogicalFormat &&
+                        HasNewCaveatFormatCaps(renderbufferCaps, fallbackRenderbufferCaps)) {
                         LogVulkanFormatCaveat(logicalFormat, renderbufferTargetIndex, *fallbackLogicalFormat);
                     }
                 }
@@ -322,13 +328,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     void PopulateFormatCapabilities(VkPhysicalDevice physicalDevice,
                                     PFN_vkGetPhysicalDeviceFormatProperties getFormatProperties,
-                                    const MG_External::VulkanCapabilities& capabilities, FormatCapabilityCache& cache) {
+                                    const MG_External::VulkanCapabilities& capabilities,
+                                    FormatCapabilityCache& cache) {
         PopulateFormatCapabilitiesImpl(physicalDevice, getFormatProperties, capabilities, cache);
     }
 
     BackendObject_DirectVulkan::~BackendObject_DirectVulkan() = default;
 
-    BackendObject_DirectVulkan::BackendObject_DirectVulkan() : m_rendererInfo{GetRendererIdentity()} {}
+    BackendObject_DirectVulkan::BackendObject_DirectVulkan(): m_rendererInfo{GetRendererIdentity()} {}
 
     Bool BackendObject_DirectVulkan::InitWindowSurface() {
         if (!m_windowHandle.Handle) {
@@ -402,8 +409,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             MGLOG_E("DirectVulkan backend not initialized");
             return false;
         }
-        if (!handle.Handle || (handle.Backend != WindowBackend::Android && handle.Backend != WindowBackend::X11 &&
-                               handle.Backend != WindowBackend::MetalLayer && handle.Backend != WindowBackend::Win32)) {
+        if (!handle.Handle || (handle.Backend != WindowBackend::Android &&
+                               handle.Backend != WindowBackend::X11 &&
+                               handle.Backend != WindowBackend::MetalLayer &&
+                               handle.Backend != WindowBackend::Win32)) {
             MGLOG_E("DirectVulkan backend only supports Android, X11, CAMetalLayer, and Win32 native windows");
             return false;
         }
@@ -460,9 +469,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // treat them as signaled/available with zero results from here on.
         BumpRendererGeneration();
         pVulkanRenderer.reset();
-        // The reflection cache is file-scope, not renderer-owned; without this the
-        // deleted programs' reflection strings survive full context teardown.
-        ClearProgramResourceCaches();
         BackendObject::ReleaseEGLResources();
     }
 
@@ -472,9 +478,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // treat them as signaled/available with zero results from here on.
         BumpRendererGeneration();
         pVulkanRenderer.reset();
-        // The reflection cache is file-scope, not renderer-owned; without this the
-        // deleted programs' reflection strings survive full context teardown.
-        ClearProgramResourceCaches();
     }
 
     const RendererInfo& BackendObject_DirectVulkan::GetRendererInfo() const {
@@ -494,32 +497,32 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             .RendererName = "Magma",
             .BackendName = "Direct (Vulkan)",
             .ExtraVendor = Nullopt,
-            .RendererGLInfo = {.TargetGLVersion = {4, 0, 0},
-                               .TargetGLSLVersion = {4, 6, 0},
-                               // Baseline advertisement (no shader subgroup, no timer queries); a
-                               // live backend reconciles its copy in UpdateAdvertisedExtensions.
-                               .Extensions = BuildAdvertisedExtensions(false, false, false),
-                               .IsCompatibilityProfile = false},
+            .RendererGLInfo =
+                {
+                    .TargetGLVersion = {3, 3, 0},
+                    .TargetGLSLVersion = {4, 6, 0},
+                    // Baseline advertisement (no shader subgroup, no timer queries); a
+                    // live backend reconciles its copy in UpdateAdvertisedExtensions.
+                    .Extensions = BuildAdvertisedExtensions(false, false, false),
+                    .IsCompatibilityProfile = false
+                },
             .StaticBackendCapability = {.AllowVSOnlyPrograms = false}};
         return rendererInfo;
     }
 
     Vector<GLExtension> BuildAdvertisedExtensions(Bool shaderSubgroupSupported, Bool timerQueriesSupported,
                                                   Bool anisotropicFilteringSupported) {
-        Vector<GLExtension> extensions = {
-            V_OpenGL30, V_OpenGL31, V_OpenGL32, V_OpenGL33, V_OpenGL40, E_GL_ARB_draw_buffers_blend,
-            E_GL_ARB_compute_shader, E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
-            E_GL_ARB_program_interface_query, E_GL_ARB_framebuffer_object, E_GL_ARB_multi_draw_indirect,
-            E_GL_ARB_indirect_parameters, E_GL_EXT_framebuffer_object, E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage,
-            E_GL_ARB_texture_storage, E_GL_ARB_texture_storage_multisample, E_GL_ARB_texture_multisample,
-            E_GL_ARB_clear_texture, E_GL_ARB_direct_state_access, E_GL_ARB_shader_draw_parameters,
-            E_GL_ARB_gpu_shader_int64, E_GL_KHR_debug, E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind,
-            E_GL_ARB_shading_language_420pack, E_GL_ARB_vertex_attrib_binding, E_GL_ARB_shader_image_size,
-            E_GL_ARB_explicit_attrib_location,
-            // Advertised with GL_NUM_PROGRAM_BINARY_FORMATS = 0, which the
-            // extension explicitly permits. It is also the only thing that
-            // exposes glProgramParameteri before GL 4.1.
-            E_GL_ARB_get_program_binary};
+        Vector<GLExtension> extensions = {V_OpenGL30, V_OpenGL31, V_OpenGL32,
+                                          V_OpenGL33, E_GL_ARB_draw_buffers_blend, E_GL_ARB_compute_shader,
+                                          E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
+                                          E_GL_ARB_program_interface_query, E_GL_ARB_framebuffer_object,
+                                          E_GL_ARB_multi_draw_indirect, E_GL_ARB_indirect_parameters,
+                                          E_GL_EXT_framebuffer_object, E_GL_ARB_depth_texture, E_GL_ARB_buffer_storage,
+                                          E_GL_ARB_texture_storage, E_GL_ARB_texture_storage_multisample,
+                                          E_GL_ARB_clear_texture, E_GL_ARB_direct_state_access,
+                                          E_GL_ARB_shader_draw_parameters, E_GL_ARB_gpu_shader_int64, E_GL_KHR_debug,
+                                          E_GL_ARB_gpu_shader5, E_GL_ARB_multi_bind, E_GL_ARB_shading_language_420pack,
+                                          E_GL_ARB_vertex_attrib_binding, E_GL_ARB_shader_image_size};
         if (shaderSubgroupSupported && !MG_Config::Features.DisableSubgroup) {
             extensions.push_back(E_GL_KHR_shader_subgroup);
         }
@@ -582,8 +585,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             funcsTable.GL.ClearBufferiv = ClearBufferiv;
             funcsTable.GL.ClearNamedFramebufferfv = ClearNamedFramebufferfv;
             funcsTable.GL.ClearNamedFramebufferfi = ClearNamedFramebufferfi;
-            funcsTable.GL.ClearNamedFramebufferiv = ClearNamedFramebufferiv;
-            funcsTable.GL.ClearNamedFramebufferuiv = ClearNamedFramebufferuiv;
             funcsTable.GL.BlitFramebuffer = BlitFramebuffer;
             funcsTable.GL.BlitNamedFramebuffer = BlitNamedFramebuffer;
             funcsTable.GL.CopyTexImage2D = CopyTexImage2D;
@@ -627,15 +628,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 funcsTable.GL.DeleteBackendQuery = DeleteBackendQuery;
                 funcsTable.GL.GetGpuTimestampNs = GetGpuTimestampNs;
             }
-            // Occlusion queries share the handle-based result/delete entries, which must
-            // exist even when timer queries are disabled.
-            funcsTable.GL.BeginOcclusionQuery = BeginOcclusionQuery;
-            funcsTable.GL.EndOcclusionQuery = EndOcclusionQuery;
-            funcsTable.GL.BeginXfbPrimitivesQuery = BeginXfbPrimitivesQuery;
-            funcsTable.GL.EndXfbPrimitivesQuery = EndXfbPrimitivesQuery;
-            funcsTable.GL.IsQueryResultAvailable = IsQueryResultAvailable;
-            funcsTable.GL.GetQueryResult64 = GetQueryResult64;
-            funcsTable.GL.DeleteBackendQuery = DeleteBackendQuery;
             funcsTableInitialized = true;
         }
         return funcsTable;
@@ -716,7 +708,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // rather than a maximum the sampler manager will never apply.
         m_dynamicParameters.MaxTextureMaxAnisotropy =
             (pVulkanRenderer && pVulkanRenderer->IsSamplerAnisotropySupported()) ? m_vulkanCaps.MaxSamplerAnisotropy
-                                                                                 : 1.0f;
+                                                                                : 1.0f;
         m_dynamicParameters.SmoothLineWidthRangeMin = m_vulkanCaps.SmoothLineWidthRangeMin;
         m_dynamicParameters.SmoothLineWidthRangeMax = m_vulkanCaps.SmoothLineWidthRangeMax;
         m_dynamicParameters.SmoothLineWidthGranularity = m_vulkanCaps.SmoothLineWidthGranularity;
@@ -737,7 +729,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_dynamicParameters.MaxIntegerSamples = m_vulkanCaps.MaxIntegerSamples;
         m_dynamicParameters.MaxSamples = m_vulkanCaps.MaxSamples;
         m_dynamicParameters.MaxSampleMaskWords = m_vulkanCaps.MaxSampleMaskWords;
-        const Int maxSupportedTextureUnits = static_cast<Int>(MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS);
+        const Int maxSupportedTextureUnits =
+            static_cast<Int>(MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS);
         // GL_MAX_TEXTURE_IMAGE_UNITS is a *per-stage* sampler limit. Adreno/Qualcomm report a huge
         // maxPerStageDescriptorSampledImages (descriptor-indexing scale), so clamping it only to our
         // combined array capacity (192) still advertises 192 per stage. Host code treats this value as
@@ -747,7 +740,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // limits while keeping the combined limit at our texture-unit array capacity.
         constexpr Int maxPerStageTextureUnits =
             static_cast<Int>(MG_State::GLState::TextureState::MAX_PER_STAGE_TEXTURE_IMAGE_UNITS);
-        m_dynamicParameters.MaxTextureImageUnits = std::min(m_vulkanCaps.MaxTextureImageUnits, maxPerStageTextureUnits);
+        m_dynamicParameters.MaxTextureImageUnits =
+            std::min(m_vulkanCaps.MaxTextureImageUnits, maxPerStageTextureUnits);
         m_dynamicParameters.MaxVertexTextureImageUnits =
             std::min(m_vulkanCaps.MaxVertexTextureImageUnits, maxPerStageTextureUnits);
         m_dynamicParameters.MaxComputeTextureImageUnits =
@@ -756,18 +750,19 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             std::min(m_vulkanCaps.MaxCombinedTextureImageUnits, maxSupportedTextureUnits);
         // Never advertise more attributes than the state layer can store: the current-value array and
         // the Uint32 attribute masks the draw path passes around are both bounded by MAX_VERTEX_ATTRIBS.
-        m_dynamicParameters.MaxVertexAttribs = std::min(
-            m_vulkanCaps.MaxVertexAttribs, static_cast<Int>(MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS));
+        m_dynamicParameters.MaxVertexAttribs =
+            std::min(m_vulkanCaps.MaxVertexAttribs,
+                     static_cast<Int>(MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS));
         m_dynamicParameters.MaxComputeShaderStorageBlocks = m_vulkanCaps.MaxComputeShaderStorageBlocks;
         m_dynamicParameters.MaxCombinedShaderStorageBlocks = m_vulkanCaps.MaxCombinedShaderStorageBlocks;
         m_dynamicParameters.MaxComputeUniformBlocks = m_vulkanCaps.MaxComputeUniformBlocks;
         m_dynamicParameters.MaxComputeWorkGroupInvocations = m_vulkanCaps.MaxComputeWorkGroupInvocations;
         m_dynamicParameters.MaxShaderStorageBufferBindings = m_vulkanCaps.MaxShaderStorageBufferBindings;
         m_dynamicParameters.MaxTextureBufferSize = m_vulkanCaps.MaxTextureBufferSize;
-        m_dynamicParameters.TextureBufferOffsetAlignment = m_vulkanCaps.TextureBufferOffsetAlignment;
         m_dynamicParameters.MaxUniformBufferBindings = m_vulkanCaps.MaxUniformBufferBindings;
         m_dynamicParameters.MaxUniformBlockSize = m_vulkanCaps.MaxUniformBlockSize;
-        m_dynamicParameters.MaxImageUnits = std::max(std::min(m_vulkanCaps.MaxImageUnits, maxSupportedTextureUnits), 0);
+        m_dynamicParameters.MaxImageUnits =
+            std::max(std::min(m_vulkanCaps.MaxImageUnits, maxSupportedTextureUnits), 0);
         m_dynamicParameters.MaxCombinedImageUniforms = std::max(m_vulkanCaps.MaxCombinedImageUniforms, 0);
         const Int maxPerStageImageUniforms =
             std::min(m_dynamicParameters.MaxImageUnits, m_dynamicParameters.MaxCombinedImageUniforms);
@@ -784,7 +779,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             m_vulkanCaps.SupportsFragmentStoresAndAtomics ? maxPerStageImageUniforms : 0;
         m_dynamicParameters.MaxComputeImageUniforms =
             std::min(std::max(m_vulkanCaps.MaxComputeImageUniforms, 0), maxPerStageImageUniforms);
-        const Int maxSupportedDrawBuffers = static_cast<Int>(MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS);
+        const Int maxSupportedDrawBuffers =
+            static_cast<Int>(MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS);
         m_dynamicParameters.MaxDrawBuffers = std::min(m_vulkanCaps.MaxDrawBuffers, maxSupportedDrawBuffers);
         m_dynamicParameters.MaxColorAttachments = std::min(m_vulkanCaps.MaxColorAttachments, maxSupportedDrawBuffers);
         m_dynamicParameters.MaxClipDistances = m_vulkanCaps.MaxClipDistances;
@@ -794,53 +790,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_dynamicParameters.ViewportBoundsRangeMin = m_vulkanCaps.ViewportBoundsRangeMin;
         m_dynamicParameters.ViewportBoundsRangeMax = m_vulkanCaps.ViewportBoundsRangeMax;
         m_dynamicParameters.ViewportSubpixelBits = m_vulkanCaps.ViewportSubpixelBits;
-        m_dynamicParameters.MinFragmentInterpolationOffset =
-            std::isfinite(m_vulkanCaps.MinFragmentInterpolationOffset) &&
-                    m_vulkanCaps.MinFragmentInterpolationOffset <= -0.5f
-                ? m_vulkanCaps.MinFragmentInterpolationOffset
-                : -0.5f;
-        m_dynamicParameters.MaxFragmentInterpolationOffset = 0.4375f;
-        m_dynamicParameters.FragmentInterpolationOffsetBits = 4;
-        if (m_vulkanCaps.FragmentInterpolationOffsetBits >= 4 &&
-            std::isfinite(m_vulkanCaps.MaxFragmentInterpolationOffset)) {
-            const Float requiredMaxOffset = 0.5f - std::ldexp(1.0f, -m_vulkanCaps.FragmentInterpolationOffsetBits);
-            if (m_vulkanCaps.MaxFragmentInterpolationOffset >= requiredMaxOffset) {
-                m_dynamicParameters.MaxFragmentInterpolationOffset = m_vulkanCaps.MaxFragmentInterpolationOffset;
-                m_dynamicParameters.FragmentInterpolationOffsetBits = m_vulkanCaps.FragmentInterpolationOffsetBits;
-            }
-        }
         m_dynamicParameters.SupportsWideLines = m_vulkanCaps.SupportsWideLines;
-        // A 2D or 2D multisample array texture is a VK_IMAGE_TYPE_2D image whose GL depth IS its
-        // arrayLayers, so a GL layer is a Vulkan array layer with nothing to translate.
-        // ResolveAttachmentBaseArrayLayer already passes the attachment's layer through. The other
-        // layered targets are declared separately as their own machinery lands.
-        {
-            using DynParams = MG_Backend::DynamicBackendParameters;
-            m_dynamicParameters.PerLayerFramebufferAttachmentTargets |=
-                DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture2DArray) |
-                DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture2DMultisampleArray);
-            // A cube map array is one 2D image with arrayLayers = 6 * cubeCount, so a GL layer is a
-            // Vulkan array layer here too - but the image cannot be created without imageCubeArray.
-            // A 3D texture's GL layer is a z slice, which only a 2D view over a 2D-array-compatible
-            // image can name. Optimistic: a format that refuses the flag is caught at image creation
-            // and declines the slice view there, which the clear path handles as a soft miss.
-            if (m_vulkanCaps.Supports2DArrayCompatible3DImages) {
-                m_dynamicParameters.PerLayerFramebufferAttachmentTargets |=
-                    DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::Texture3D);
-            }
-            if (m_vulkanCaps.SupportsImageCubeArray) {
-                m_dynamicParameters.PerLayerFramebufferAttachmentTargets |=
-                    DynParams::PerLayerFramebufferAttachmentBit(TextureTarget::TextureCubeMapArray);
-            }
-        }
-        m_dynamicParameters.SupportsFloat64VertexAttributes = m_vulkanCaps.SupportsShaderFloat64;
         m_dynamicParameters.MaxShaderStorageBlockSize =
             std::min(m_vulkanCaps.MaxShaderStorageBlockSize, kMaxAdvertisedShaderStorageBlockSize);
         if (m_vulkanCaps.SupportsShaderSubgroup) {
             m_dynamicParameters.SubgroupSize = m_vulkanCaps.SubgroupSize;
             m_dynamicParameters.SubgroupSupportedStages = mapShaderStages(m_vulkanCaps.SubgroupSupportedStages);
-            m_dynamicParameters.SubgroupSupportedFeatures =
-                mapSubgroupFeatures(m_vulkanCaps.SubgroupSupportedOperations);
+            m_dynamicParameters.SubgroupSupportedFeatures = mapSubgroupFeatures(m_vulkanCaps.SubgroupSupportedOperations);
             m_dynamicParameters.SubgroupQuadOperationsInAllStages = m_vulkanCaps.SubgroupQuadOperationsInAllStages;
         } else {
             m_dynamicParameters.SubgroupSize = 0;
@@ -850,7 +806,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
         if (m_dynamicParameters.MaxShaderStorageBlockSize != m_vulkanCaps.MaxShaderStorageBlockSize) {
             MGLOG_I("DirectVulkan: clamped GL_MAX_SHADER_STORAGE_BLOCK_SIZE from %zu to %zu",
-                    m_vulkanCaps.MaxShaderStorageBlockSize, m_dynamicParameters.MaxShaderStorageBlockSize);
+                    m_vulkanCaps.MaxShaderStorageBlockSize,
+                    m_dynamicParameters.MaxShaderStorageBlockSize);
         }
         switch (m_vulkanCaps.VendorId) {
         case 0x5143u: // VK_VENDOR_ID: Qualcomm

MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp

@@ -61,12 +61,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         };
 
         struct ProgramResourceCache {
-            // Lifetime id of the program the cached reflection belongs to. GL names are
-            // recycled (IndexGenerator hands freed indices straight back), and a
-            // recreated program's backendStateVersion restarts at the same small values,
-            // so the version alone can collide; the never-reused lifetime id makes the
-            // slot's ownership unambiguous.
-            Uint64 programLifetimeId = 0;
             Uint32 backendStateVersion = 0;
             Vector<StorageBlockResource> storageBlocks;
             Vector<BufferVariableResource> bufferVariables;
@@ -88,11 +82,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             Uint32 baseInstance = 0;
         };
 
-        // Keyed by GL program name so the freed-name reuse in IndexGenerator bounds the
-        // map at the peak-simultaneous-program high-water mark; each slot's ownership is
-        // checked against the program's lifetime id before it is served (see
-        // GetProgramResourceCache). Cleared wholesale at EGL teardown via
-        // ClearProgramResourceCaches.
         UnorderedMap<GLuint, ProgramResourceCache> g_programResourceCaches;
 
         void ClearReadPixelsOutput(GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels) {
@@ -153,19 +142,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         ProgramResourceCache& GetProgramResourceCache(const MG_State::GLState::ProgramObject& program) {
             auto& cache = g_programResourceCaches[program.GetExternalIndex()];
-            const Uint64 programLifetimeId = program.GetLifetimeId();
             const Uint32 backendStateVersion = program.GetBackendStateVersion();
-            // The lifetime id must match too: a new program that reuses a deleted
-            // program's name and happens to land on the same backendStateVersion (both
-            // count from zero) would otherwise be served the dead program's reflection.
-            if (cache.programLifetimeId == programLifetimeId &&
-                cache.backendStateVersion == backendStateVersion &&
+            if (cache.backendStateVersion == backendStateVersion &&
                 (!cache.storageBlocks.empty() || !cache.bufferVariables.empty())) {
                 return cache;
             }
 
             cache = {};
-            cache.programLifetimeId = programLifetimeId;
             cache.backendStateVersion = backendStateVersion;
 
             Vector<SpvReflectShaderModule> modules;
@@ -383,15 +366,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
     } // namespace
 
-    void ClearProgramResourceCaches() {
-        // Called from EGL teardown while the backend's m_eglStateMutex is held; GL
-        // calls are serialized in this codebase (contexts migrate threads but never
-        // run concurrently), so no other thread can be inside the unsynchronized map.
-        // Live programs in another context self-heal: their entry rebuilds from the
-        // retained generated SPIR-V on the next resource query.
-        g_programResourceCaches.clear();
-    }
-
     GLuint GetShaderStorageBlockIndex(const MG_State::GLState::ProgramObject& program, const String& name) {
         auto& cache = GetProgramResourceCache(program);
         const auto it = std::find_if(cache.storageBlocks.begin(), cache.storageBlocks.end(),
@@ -440,20 +414,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         pVulkanRenderer->ClearNamedFramebufferfv(framebuffer, buffer, drawbuffer, value);
     }
 
-    void ClearNamedFramebufferiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
-                                 GLint drawbuffer, const GLint* value) {
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearNamedFramebufferiv called with null VulkanRenderer");
-        MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearNamedFramebufferiv called with null GL context");
-        pVulkanRenderer->ClearNamedFramebufferiv(framebuffer, buffer, drawbuffer, value);
-    }
-
-    void ClearNamedFramebufferuiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
-                                  GLint drawbuffer, const GLuint* value) {
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearNamedFramebufferuiv called with null VulkanRenderer");
-        MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearNamedFramebufferuiv called with null GL context");
-        pVulkanRenderer->ClearNamedFramebufferuiv(framebuffer, buffer, drawbuffer, value);
-    }
-
     void ClearNamedFramebufferfi(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
                                  GLint drawbuffer, GLfloat depth, GLint stencil) {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearNamedFramebufferfi called with null VulkanRenderer");
@@ -1264,76 +1224,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         pVulkanRenderer->Clear(mask);
     }
 
-    // Vulkan has no LINE_LOOP topology; rewrite the draw as an indexed LINE_STRIP
-    // whose synthesized index list revisits the first vertex at the end.
-    static void DrawLineLoopAsIndexedStrip(const Vector<Uint32>& closedIndices, GLint basevertex) {
-        DrawIndexedCmd payload{};
-        payload.mode = GL_LINE_STRIP;
-        payload.indexBufferView.indexType = GL_UNSIGNED_INT;
-        payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(closedIndices.data());
-        payload.indexBufferView.indexByteSize = closedIndices.size() * sizeof(Uint32);
-        payload.indexBufferView.forceClientMemory = true;
-        payload.params.indexCount = static_cast<Uint32>(closedIndices.size());
-        payload.params.instanceCount = 1;
-        payload.params.vertexOffset = basevertex;
-        pVulkanRenderer->DrawElements(payload);
-    }
-
-    // Resolve a DrawElements index list (bound element-array buffer or client
-    // memory) into uint32 values with the loop-closing first index appended.
-    static Bool BuildClosedLineLoopIndices(GLsizei count, GLenum type, const void* indices,
-                                           Vector<Uint32>& outIndices) {
-        const SizeT indexSize = MG_Util::GetGLTypeSize(type);
-        if (indexSize == 0 || count < 2) {
-            return false;
-        }
-        const Uint8* indexBytes = nullptr;
-        const auto& vao = *MG_State::pGLContext->GetBoundVertexArray();
-        const auto& indexBufferShared = vao.GetIndexBufferBindingSlot().GetBoundObject();
-        if (indexBufferShared != nullptr) {
-            const SizeT offset = reinterpret_cast<SizeT>(indices);
-            const SizeT bufferSize = indexBufferShared->GetSize();
-            if (indexBufferShared->MappedData() == nullptr || offset > bufferSize ||
-                static_cast<SizeT>(count) * indexSize > bufferSize - offset) {
-                return false;
-            }
-            indexBufferShared->SyncPersistentMappedRange();
-            indexBytes = indexBufferShared->MappedData() + offset;
-        } else {
-            indexBytes = static_cast<const Uint8*>(indices);
-            if (indexBytes == nullptr) {
-                return false;
-            }
-        }
-        outIndices.resize(static_cast<SizeT>(count) + 1);
-        for (GLsizei i = 0; i < count; ++i) {
-            switch (indexSize) {
-            case 1: outIndices[i] = indexBytes[i]; break;
-            case 2: outIndices[i] = reinterpret_cast<const Uint16*>(indexBytes)[i]; break;
-            default: outIndices[i] = reinterpret_cast<const Uint32*>(indexBytes)[i]; break;
-            }
-        }
-        outIndices[count] = outIndices[0];
-        return true;
-    }
-
     void DrawArrays(GLenum mode, GLint first, GLsizei count) {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawArrays called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawArrays called with null GL context");
 
-        if (mode == GL_LINE_LOOP) {
-            if (count < 2) {
-                return;
-            }
-            Vector<Uint32> closedIndices(static_cast<SizeT>(count) + 1);
-            for (GLsizei i = 0; i < count; ++i) {
-                closedIndices[i] = static_cast<Uint32>(first + i);
-            }
-            closedIndices[count] = static_cast<Uint32>(first);
-            DrawLineLoopAsIndexedStrip(closedIndices, 0);
-            return;
-        }
-
         DrawCmd payload{};
         payload.mode = mode;
         payload.params.firstVertex = first;
@@ -1346,14 +1240,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElements called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElements called with null GL context");
 
-        if (mode == GL_LINE_LOOP) {
-            Vector<Uint32> closedIndices;
-            if (BuildClosedLineLoopIndices(count, type, indices, closedIndices)) {
-                DrawLineLoopAsIndexedStrip(closedIndices, 0);
-            }
-            return;
-        }
-
         DrawIndexedCmd payload{};
         payload.mode = mode;
         payload.indexBufferView.indexType = type;
@@ -1422,13 +1308,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices, GLint basevertex) {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElementsBaseVertex called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElementsBaseVertex called with null GL context");
-        if (mode == GL_LINE_LOOP) {
-            Vector<Uint32> closedIndices;
-            if (BuildClosedLineLoopIndices(count, type, indices, closedIndices)) {
-                DrawLineLoopAsIndexedStrip(closedIndices, basevertex);
-            }
-            return;
-        }
         DrawIndexedCmd payload{};
         payload.mode = mode;
         payload.indexBufferView.indexType = type;
@@ -1578,12 +1457,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // records are shared (SharedPtr) with the owning pool's pending list,
         // so deleting the query while results are still in flight is safe.
         struct VulkanTimerQuery {
-            enum class Kind : Uint8 { Timer, Occlusion, XfbWritten, XfbGenerated };
-            Kind kind = Kind::Timer;
             SharedPtr<VkTimerQueryManager::TimestampRecord> begin;
             SharedPtr<VkTimerQueryManager::TimestampRecord> end;
-            // Kind::Occlusion - pool slots recorded between Begin/End; summed at result time.
-            Vector<Uint32> occlusionSlots;
             // Renderer generation the records were written under (see
             // g_rendererGeneration). A stale generation resolves as available
             // with a final zero result: the records' pool indices and frame
@@ -1592,12 +1467,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             // (and, via the SharedPtrs, the records), never pool slots, so
             // stale queries are always safe to delete.
             Uint64 rendererGeneration = 0;
-            // Kind::XfbGenerated - the frontend's paused-draw primitive counter when the
-            // query began. VK_QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT counts only what the
-            // capture saw, so a draw made while the span was paused is invisible to it -
-            // but GL_PRIMITIVES_GENERATED counts what the last vertex processing stage
-            // emitted regardless. The delta closes that gap at result time.
-            Uint64 pausedPrimitiveSnapshot = 0;
         };
     } // namespace
 
@@ -1679,30 +1548,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             // ever be produced, so resolve with a final 0.
             return true;
         }
-        if (query->kind == VulkanTimerQuery::Kind::Occlusion) {
-            Uint64 samples = 0;
-            if (!pVulkanRenderer->ResolveOcclusionQueryResult(query->occlusionSlots, samples)) {
-                return false;
-            }
-            query->occlusionSlots.clear(); // slots are recycled by the resolve
-            *outNanoseconds = samples;
-            return true;
-        }
-        if (query->kind == VulkanTimerQuery::Kind::XfbWritten ||
-            query->kind == VulkanTimerQuery::Kind::XfbGenerated) {
-            Uint64 primitives = 0;
-            if (!pVulkanRenderer->ResolveXfbQueryResult(query->occlusionSlots,
-                                                        query->kind == VulkanTimerQuery::Kind::XfbGenerated,
-                                                        primitives)) {
-                return false;
-            }
-            if (query->kind == VulkanTimerQuery::Kind::XfbGenerated && MG_State::pGLContext != nullptr) {
-                primitives += MG_State::pGLContext->GetTransformFeedbackPausedPrimitiveCounter() -
-                              query->pausedPrimitiveSnapshot;
-            }
-            *outNanoseconds = primitives;
-            return true;
-        }
         // With wait, mirrors ClientWaitSync: a query ended this frame cannot
         // complete until Present submits the commands, so the wait refuses to
         // block on the current unsubmitted serial. Returning false keeps the
@@ -1735,49 +1580,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         delete static_cast<VulkanTimerQuery*>(handle);
     }
 
-    BackendQueryHandle BeginXfbPrimitivesQuery(Bool generated) {
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::BeginXfbPrimitivesQuery called with null VulkanRenderer");
-        if (!pVulkanRenderer->StartXfbQueryCapture(generated ? 1u : 0u)) {
-            return nullptr;
-        }
-        auto* query = new VulkanTimerQuery{};
-        query->kind = generated ? VulkanTimerQuery::Kind::XfbGenerated : VulkanTimerQuery::Kind::XfbWritten;
-        query->rendererGeneration = GetRendererGeneration();
-        query->pausedPrimitiveSnapshot =
-            MG_State::pGLContext ? MG_State::pGLContext->GetTransformFeedbackPausedPrimitiveCounter() : 0;
-        return query;
-    }
-
-    void EndXfbPrimitivesQuery(BackendQueryHandle handle) {
-        auto* query = static_cast<VulkanTimerQuery*>(handle);
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::EndXfbPrimitivesQuery called with null VulkanRenderer");
-        if (query == nullptr || query->rendererGeneration != GetRendererGeneration()) {
-            return;
-        }
-        pVulkanRenderer->StopXfbQueryCapture(
-            query->kind == VulkanTimerQuery::Kind::XfbGenerated ? 1u : 0u, query->occlusionSlots);
-    }
-
-    BackendQueryHandle BeginOcclusionQuery() {
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::BeginOcclusionQuery called with null VulkanRenderer");
-        if (!pVulkanRenderer->StartOcclusionQueryCapture()) {
-            return nullptr;
-        }
-        auto* query = new VulkanTimerQuery{};
-        query->kind = VulkanTimerQuery::Kind::Occlusion;
-        query->rendererGeneration = GetRendererGeneration();
-        return query;
-    }
-
-    void EndOcclusionQuery(BackendQueryHandle handle) {
-        auto* query = static_cast<VulkanTimerQuery*>(handle);
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::EndOcclusionQuery called with null VulkanRenderer");
-        if (query == nullptr || query->rendererGeneration != GetRendererGeneration()) {
-            return;
-        }
-        pVulkanRenderer->StopOcclusionQueryCapture(query->occlusionSlots);
-    }
-
     Int64 GetGpuTimestampNs() {
         // Vulkan cannot synchronously sample the GPU clock: timestamps only
         // exist as vkCmdWriteTimestamp results read back later, and

MobileGL/MG_Backend/DirectVulkan/DirectVulkan.h

@@ -23,22 +23,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     Uint64 GetRendererGeneration();
     void BumpRendererGeneration();
 
-    // Drops every cached program-resource reflection entry (CPU-side strings/vectors
-    // only, no Vulkan handles). Called at EGL teardown next to the renderer reset;
-    // safe because GL calls are serialized in this codebase, and any still-live
-    // program rebuilds its entry from the retained generated SPIR-V on demand.
-    void ClearProgramResourceCaches();
-
     void ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
     void ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value);
     void ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint* value);
     void ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint* value);
     void ClearNamedFramebufferfv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
                                  GLint drawbuffer, const GLfloat* value);
-    void ClearNamedFramebufferiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
-                                 GLint drawbuffer, const GLint* value);
-    void ClearNamedFramebufferuiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
-                                  GLint drawbuffer, const GLuint* value);
     void ClearNamedFramebufferfi(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
                                  GLint drawbuffer, GLfloat depth, GLint stencil);
     void Clear(GLbitfield mask);
@@ -127,10 +117,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     // only while a live renderer exists whose device can actually time.
     Bool IsTimerQuerySupported();
     BackendQueryHandle BeginTimeElapsedQuery();
-    BackendQueryHandle BeginXfbPrimitivesQuery(Bool generated);
-    void EndXfbPrimitivesQuery(BackendQueryHandle query);
-    BackendQueryHandle BeginOcclusionQuery();
-    void EndOcclusionQuery(BackendQueryHandle query);
     void EndTimeElapsedQuery(BackendQueryHandle query);
     BackendQueryHandle QueryCounterTimestamp();
     Bool IsQueryResultAvailable(BackendQueryHandle query);

MobileGL/MG_Backend/DirectVulkan/Renderer/FrameContext.cpp

@@ -16,19 +16,18 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_device = device;
         m_commandPool = commandPool;
 
-        Vector<VkCommandBuffer> commandBuffers(frameCount * 2, VK_NULL_HANDLE);
+        Vector<VkCommandBuffer> commandBuffers(frameCount, VK_NULL_HANDLE);
         VkCommandBufferAllocateInfo allocInfo{};
         allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
         allocInfo.commandPool = commandPool;
         allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
-        allocInfo.commandBufferCount = frameCount * 2;
+        allocInfo.commandBufferCount = frameCount;
         VkResult result = vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data());
         if (result != VK_SUCCESS) {
             return result;
         }
         for (Uint32 i = 0; i < frameCount; ++i) {
             m_frames[i].commandBuffer = commandBuffers[i];
-            m_frames[i].preCommandBuffer = commandBuffers[frameCount + i];
         }
 
         VkSemaphoreCreateInfo semaphoreInfo{VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO};
@@ -48,10 +47,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     void FrameContext::Destroy(VkDevice device, VkCommandPool commandPool) {
         const Uint32 frameCount = static_cast<Uint32>(m_frames.size());
-        Vector<VkCommandBuffer> commandBuffers(frameCount * 2, VK_NULL_HANDLE);
+        Vector<VkCommandBuffer> commandBuffers(frameCount, VK_NULL_HANDLE);
         for (Uint32 i = 0; i < frameCount; ++i) {
             commandBuffers[i] = m_frames[i].commandBuffer;
-            commandBuffers[frameCount + i] = m_frames[i].preCommandBuffer;
         }
 
         for (Uint32 i = 0; i < frameCount; ++i) {
@@ -62,7 +60,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             for (auto& frame : m_frames) {
                 FreeRetiredCommandBuffers(frame);
             }
-            vkFreeCommandBuffers(device, commandPool, frameCount * 2, commandBuffers.data());
+            vkFreeCommandBuffers(device, commandPool, frameCount, commandBuffers.data());
         }
         m_frames.clear();
         currentFrameIndex = 0;
@@ -89,8 +87,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         currentFrameIndex = (currentFrameIndex + 1) % static_cast<Uint32>(m_frames.size());
         GetCurrent().isCommandRecording = false;
         GetCurrent().hasCommandBufferRecorded = false;
-        GetCurrent().isPreCommandRecording = false;
-        GetCurrent().hasPreCommandBufferRecorded = false;
     }
 
     VkCommandBuffer& FrameContext::BeginCommandRecording(VkCommandBufferUsageFlags flags,
@@ -122,41 +118,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         frame.hasCommandBufferRecorded = true;
     }
 
-    VkCommandBuffer FrameContext::BeginPreCommandRecording() {
-        auto& frame = GetCurrent();
-        if (frame.isPreCommandRecording) {
-            return frame.preCommandBuffer;
-        }
-        MOBILEGL_ASSERT(!frame.hasPreCommandBufferRecorded,
-                        "BeginPreCommandRecording: a recorded pre stream is still awaiting submission");
-        VK_VERIFY(vkResetCommandBuffer(frame.preCommandBuffer, 0), "BeginPreCommandRecording, vkResetCommandBuffer");
-        VkCommandBufferBeginInfo beginInfo{};
-        beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
-        VK_VERIFY(vkBeginCommandBuffer(frame.preCommandBuffer, &beginInfo),
-                  "BeginPreCommandRecording, vkBeginCommandBuffer");
-        frame.isPreCommandRecording = true;
-        return frame.preCommandBuffer;
-    }
-
-    void FrameContext::EndPreCommandRecordingIfOpen() {
-        auto& frame = GetCurrent();
-        if (!frame.isPreCommandRecording) {
-            return;
-        }
-        VK_VERIFY(vkEndCommandBuffer(frame.preCommandBuffer), "EndPreCommandRecordingIfOpen, vkEndCommandBuffer");
-        frame.isPreCommandRecording = false;
-        frame.hasPreCommandBufferRecorded = true;
-    }
-
-    void FrameContext::AbandonPreCommandRecording() {
-        auto& frame = GetCurrent();
-        if (frame.isPreCommandRecording) {
-            VK_VERIFY(vkEndCommandBuffer(frame.preCommandBuffer), "AbandonPreCommandRecording, vkEndCommandBuffer");
-        }
-        frame.isPreCommandRecording = false;
-        frame.hasPreCommandBufferRecorded = false;
-    }
-
     VkResult FrameContext::InitializeSwapchainSemaphores(VkDevice device, Uint32 swapchainImageCount) {
         DestroySwapchainSemaphores(device);
         if (swapchainImageCount == 0) {
@@ -189,30 +150,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     Bool FrameContext::TransitionToPresent(VkImage image, VkImageLayout oldLayout, VkImageLayout presentLayout) {
         auto& frame = GetCurrent();
-        if (oldLayout == presentLayout || oldLayout == VK_IMAGE_LAYOUT_SHARED_PRESENT_KHR) {
+        if (frame.hasCommandBufferRecorded || frame.isCommandRecording || oldLayout == presentLayout ||
+            oldLayout == VK_IMAGE_LAYOUT_SHARED_PRESENT_KHR) {
             return false;
         }
 
-        // The barrier belongs in the frame's own recording. Bailing out because
-        // something was already recorded (the previous behaviour) dropped the
-        // transition entirely for every frame that never ran a default-framebuffer
-        // render pass - the only other thing that carries the image to
-        // PRESENT_SRC_KHR, via that pass's finalLayout - so the swapchain image was
-        // handed to the WSI still in the layout it was acquired in.
-        // A closed-but-unsubmitted buffer can only come from a submit that already
-        // failed (SubmitPendingCommandBuffer leaves the flag set on error), and
-        // appending to it is illegal while reopening would reset the frame's own
-        // commands away. The device is gone on that path anyway - stay silent-safe
-        // rather than trade a lost device for a barrier into a closed buffer.
-        if (frame.hasCommandBufferRecorded) {
-            MGLOG_E("TransitionToPresent: command buffer already closed; skipping the present barrier");
-            return false;
-        }
-
-        // Reopening a recording here would vkResetCommandBuffer this frame's own
-        // commands away, so append to the open one and let the caller close it.
-        const Bool openedRecording = !frame.isCommandRecording;
-        VkCommandBuffer commandBuffer = openedRecording ? BeginCommandRecording() : frame.commandBuffer;
+        auto& commandBuffer = BeginCommandRecording();
 
         VkImageMemoryBarrier presentBarrier{};
         presentBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
@@ -231,9 +174,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         vkCmdPipelineBarrier(commandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0,
                              nullptr, 0, nullptr, 1, &presentBarrier);
 
-        if (openedRecording) {
-            EndCommandRecording();
-        }
+        EndCommandRecording();
         return true;
     }
 
@@ -241,27 +182,17 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                                Uint32 swapchainImageIndex) const {
         const auto& frame = GetCurrent();
         MOBILEGL_ASSERT(!frame.isCommandRecording, "GetSubmitInfo called while command buffer recording is still active");
-        MOBILEGL_ASSERT(!frame.isPreCommandRecording,
-                        "GetSubmitInfo called while the pre-pass stream is still recording");
         AssertValidSwapchainImageIndex(swapchainImageIndex);
         SubmitInfoPacket packet{};
         packet.waitSemaphore = frame.imageAvailableSemaphore;
         packet.signalSemaphore = m_swapchainImageRenderFinishedSemaphores[swapchainImageIndex];
-
-        Uint32 commandBufferCount = 0;
-        // The pre-pass stream executes strictly before the frame's commands.
-        if (frame.hasPreCommandBufferRecorded) {
-            packet.commandBuffers[commandBufferCount++] = frame.preCommandBuffer;
-        }
-        if (shouldSubmitCommandBuffer) {
-            packet.commandBuffers[commandBufferCount++] = frame.commandBuffer;
-        }
+        packet.commandBuffer = frame.commandBuffer;
 
         packet.submitInfo.waitSemaphoreCount = frame.imageAvailableSemaphoreConsumed ? 0U : 1U;
         packet.submitInfo.pWaitSemaphores = frame.imageAvailableSemaphoreConsumed ? nullptr : &packet.waitSemaphore;
         packet.submitInfo.pWaitDstStageMask = frame.imageAvailableSemaphoreConsumed ? nullptr : &packet.waitDstStageMask;
-        packet.submitInfo.commandBufferCount = commandBufferCount;
-        packet.submitInfo.pCommandBuffers = commandBufferCount > 0 ? packet.commandBuffers : nullptr;
+        packet.submitInfo.commandBufferCount = shouldSubmitCommandBuffer ? 1U : 0U;
+        packet.submitInfo.pCommandBuffers = shouldSubmitCommandBuffer ? &packet.commandBuffer : nullptr;
         packet.submitInfo.signalSemaphoreCount = 1;
         packet.submitInfo.pSignalSemaphores = &packet.signalSemaphore;
         return packet;
@@ -296,21 +227,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         result = vkAcquireNextImageKHR(device, swapchain, timeout, frame.imageAvailableSemaphore, acquireFence,
                                        &outImageIndex);
-        // VK_SUBOPTIMAL_KHR is a success code: an image *was* acquired and
-        // imageAvailableSemaphore *will* be signaled. Bailing out on it skipped both
-        // the consumed-flag reset (leaving a stale "already consumed", so the next
-        // submit never waited on the pending signal) and the fence reset (leaving
-        // the slot's fence signaled for the next submit to reuse). Only a genuine
-        // failure - VK_ERROR_OUT_OF_DATE_KHR and friends, where nothing is acquired
-        // and nothing is signaled - skips the bookkeeping.
-        if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
+        if (result != VK_SUCCESS) {
             return result;
         }
 
         frame.imageAvailableSemaphoreConsumed = false;
-        const VkResult resetResult = vkResetFences(device, 1, &frame.imageInFlightFence);
-        // Hand the acquire's own code back so the caller can schedule a rebuild.
-        return resetResult == VK_SUCCESS ? result : resetResult;
+        return vkResetFences(device, 1, &frame.imageInFlightFence);
     }
 
     Uint32 FrameContext::GetCurrentFrameIndex() const {
@@ -325,14 +247,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_recordingObserver = observer;
     }
 
-    VkResult FrameContext::RetireCurrentCommandBuffer(Bool retirePreCommandBuffer) {
+    VkResult FrameContext::RetireCurrentCommandBuffer() {
         MOBILEGL_ASSERT(m_device != VK_NULL_HANDLE && m_commandPool != VK_NULL_HANDLE,
                         "RetireCurrentCommandBuffer requires an initialized FrameContext");
         auto& frame = GetCurrent();
         MOBILEGL_ASSERT(!frame.isCommandRecording,
                         "RetireCurrentCommandBuffer called while the command buffer is still recording");
-        MOBILEGL_ASSERT(!frame.isPreCommandRecording,
-                        "RetireCurrentCommandBuffer called while the pre-pass stream is still recording");
 
         VkCommandBufferAllocateInfo allocInfo{};
         allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
@@ -340,23 +260,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
         allocInfo.commandBufferCount = 1;
         VkCommandBuffer replacement = VK_NULL_HANDLE;
-        VkResult result = vkAllocateCommandBuffers(m_device, &allocInfo, &replacement);
+        const VkResult result = vkAllocateCommandBuffers(m_device, &allocInfo, &replacement);
         if (result != VK_SUCCESS) {
             return result;
         }
-        if (retirePreCommandBuffer) {
-            VkCommandBuffer preReplacement = VK_NULL_HANDLE;
-            result = vkAllocateCommandBuffers(m_device, &allocInfo, &preReplacement);
-            if (result != VK_SUCCESS) {
-                vkFreeCommandBuffers(m_device, m_commandPool, 1, &replacement);
-                return result;
-            }
-            frame.retiredCommandBuffers.push_back({frame.preCommandBuffer, frame.lastSubmitIndex});
-            frame.preCommandBuffer = preReplacement;
-        }
-        // lastSubmitIndex was just written by the renderer for the submission
-        // that carried this command buffer.
-        frame.retiredCommandBuffers.push_back({frame.commandBuffer, frame.lastSubmitIndex});
+        frame.retiredCommandBuffers.push_back(frame.commandBuffer);
         frame.commandBuffer = replacement;
         return VK_SUCCESS;
     }
@@ -366,40 +274,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return;
         }
         if (m_device != VK_NULL_HANDLE && m_commandPool != VK_NULL_HANDLE) {
-            for (const auto& retired : frame.retiredCommandBuffers) {
-                vkFreeCommandBuffers(m_device, m_commandPool, 1, &retired.commandBuffer);
-            }
+            vkFreeCommandBuffers(m_device, m_commandPool, static_cast<Uint32>(frame.retiredCommandBuffers.size()),
+                                 frame.retiredCommandBuffers.data());
         }
         frame.retiredCommandBuffers.clear();
     }
 
-    void FrameContext::FreeRetiredCommandBuffersCompletedUpTo(Uint64 completedSubmitIndex) {
-        if (m_device == VK_NULL_HANDLE || m_commandPool == VK_NULL_HANDLE) {
-            return;
-        }
-        for (auto& frame : m_frames) {
-            // Retired buffers are appended in submit order, so the completed
-            // ones form a prefix.
-            SizeT completedCount = 0;
-            while (completedCount < frame.retiredCommandBuffers.size() &&
-                   frame.retiredCommandBuffers[completedCount].submitIndex <= completedSubmitIndex) {
-                vkFreeCommandBuffers(m_device, m_commandPool, 1,
-                                     &frame.retiredCommandBuffers[completedCount].commandBuffer);
-                ++completedCount;
-            }
-            if (completedCount > 0) {
-                frame.retiredCommandBuffers.erase(frame.retiredCommandBuffers.begin(),
-                                                  frame.retiredCommandBuffers.begin() + completedCount);
-            }
-        }
-    }
-
-    void FrameContext::FreeAllRetiredCommandBuffers() {
-        for (auto& frame : m_frames) {
-            FreeRetiredCommandBuffers(frame);
-        }
-    }
-
     void FrameContext::AssertValidFrameIndex(Uint32 frameIndex) const {
         MOBILEGL_ASSERT(frameIndex < m_frames.size(), "FrameContext index out of range");
     }

MobileGL/MG_Backend/DirectVulkan/Renderer/FrameContext.h

@@ -29,9 +29,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VkPipelineStageFlags waitDstStageMask = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
             VkSemaphore waitSemaphore = VK_NULL_HANDLE;
             VkSemaphore signalSemaphore = VK_NULL_HANDLE;
-            // [0] = pre-pass command buffer (when recorded), then the frame
-            // command buffer; submitInfo.pCommandBuffers points here.
-            VkCommandBuffer commandBuffers[2] = {VK_NULL_HANDLE, VK_NULL_HANDLE};
+            VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
             VkSubmitInfo submitInfo{VK_STRUCTURE_TYPE_SUBMIT_INFO};
         };
 
@@ -42,35 +40,17 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VkPresentInfoKHR presentInfo{VK_STRUCTURE_TYPE_PRESENT_INFO_KHR};
         };
 
-        // A command buffer submitted mid-frame (FlushPendingCommands), tagged
-        // with the submit-tracker index it was submitted under so it can be
-        // freed as soon as that submission is observed complete - without
-        // waiting for the slot's fence to be waited again (present-less flush
-        // loops never wait it).
-        struct RetiredCommandBuffer {
-            VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
-            Uint64 submitIndex = 0;
-        };
-
         struct FrameData {
             VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
-            // Pre-pass work stream: out-of-pass commands (deferred clear
-            // materialization, sampled-layout transitions) for resources the
-            // frame's recording has not touched yet. Submitted immediately
-            // BEFORE commandBuffer in the same vkQueueSubmit, so recording
-            // into it never has to split the frame's active render pass.
-            VkCommandBuffer preCommandBuffer = VK_NULL_HANDLE;
             VkSemaphore imageAvailableSemaphore = VK_NULL_HANDLE;
             VkFence imageInFlightFence = VK_NULL_HANDLE;
             Bool isCommandRecording = false;
             Bool hasCommandBufferRecorded = false;
-            Bool isPreCommandRecording = false;
-            Bool hasPreCommandBufferRecorded = false;
             Bool imageAvailableSemaphoreConsumed = false;
-            // Command buffers submitted mid-frame (FlushPendingCommands),
-            // appended in submit order; freed once their submission is known
-            // complete (fence wait or completion poll).
-            Vector<RetiredCommandBuffer> retiredCommandBuffers;
+            // Command buffers submitted mid-frame (FlushPendingCommands) whose
+            // execution is only known complete once this slot's fence has been
+            // waited again; freed at that point.
+            Vector<VkCommandBuffer> retiredCommandBuffers;
             // Submit-tracker index of this slot's most recent queue submission
             // (written by the renderer at submit time).
             Uint64 lastSubmitIndex = 0;
@@ -87,14 +67,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkCommandBuffer& BeginCommandRecording(VkCommandBufferUsageFlags flags = 0,
                                                const VkCommandBufferInheritanceInfo* pInheritanceInfo = nullptr);
         void EndCommandRecording();
-        // Lazily opens the pre-pass work stream (see FrameData::preCommandBuffer).
-        VkCommandBuffer BeginPreCommandRecording();
-        // Closes the pre stream if open, marking it for submission ahead of the
-        // frame command buffer. Safe to call when it never opened.
-        void EndPreCommandRecordingIfOpen();
-        // Drops an in-progress or recorded-but-unsubmitted pre stream (dropped
-        // frame recordings, swapchain recreation).
-        void AbandonPreCommandRecording();
         VkResult InitializeSwapchainSemaphores(VkDevice device, Uint32 swapchainImageCount);
         void DestroySwapchainSemaphores(VkDevice device);
         Bool TransitionToPresent(VkImage image, VkImageLayout oldLayout,
@@ -107,18 +79,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // Parks the current (already ended and submitted) command buffer on the
         // slot's retired list and installs a freshly allocated one, so recording
         // can restart while the submitted buffer is still executing. Retired
-        // buffers are freed after the slot's fence is next waited, or as soon
-        // as their submission is observed complete.
-        VkResult RetireCurrentCommandBuffer(Bool retirePreCommandBuffer = false);
-
-        // Frees every retired command buffer whose tagged submission index is
-        // known complete. Driven by the renderer's submit tracker on completion
-        // events (fence waits and non-blocking polls), so present-less flush
-        // loops reclaim their buffers without any extra wait.
-        void FreeRetiredCommandBuffersCompletedUpTo(Uint64 completedSubmitIndex);
-        // Frees every slot's retired command buffers. Only valid when the
-        // caller has proven every queue submission complete.
-        void FreeAllRetiredCommandBuffers();
+        // buffers are freed after the slot's fence is next waited.
+        VkResult RetireCurrentCommandBuffer();
 
         Uint32 GetCurrentFrameIndex() const;
         Uint32 GetFrameCount() const;

MobileGL/MG_Backend/DirectVulkan/Renderer/PipelineFactory.cpp

@@ -8,7 +8,6 @@
 
 #include "PipelineFactory.h"
 
-#include <algorithm>
 
 namespace MobileGL::MG_Backend::DirectVulkan {
     static const char* PrimitiveTopologyToString(VkPrimitiveTopology topology) {
@@ -205,12 +204,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.topology, sizeof(payload.topology)));
         XXHASH_VERIFY(
             XXH64_update(m_hashState, &payload.primitiveRestartEnable, sizeof(payload.primitiveRestartEnable)));
-        XXHASH_VERIFY(XXH64_update(m_hashState, &payload.patchControlPoints, sizeof(payload.patchControlPoints)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.polygonMode, sizeof(payload.polygonMode)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.cullMode, sizeof(payload.cullMode)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.frontFace, sizeof(payload.frontFace)));
-        XXHASH_VERIFY(
-            XXH64_update(m_hashState, &payload.provokingVertexMode, sizeof(payload.provokingVertexMode)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.depthTestEnable, sizeof(payload.depthTestEnable)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.depthWriteEnable, sizeof(payload.depthWriteEnable)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.depthBiasEnable, sizeof(payload.depthBiasEnable)));
@@ -247,108 +243,23 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         const HashType hash = ComputeHash(payload);
         auto it = m_cache.find(hash);
         if (it != m_cache.end()) {
-            it->second.lastUsedFrame = m_frameCounter;
-            return it->second.pipeline;
+            return it->second;
         }
 
         VkPipeline pipeline = CreatePipeline(payload);
-        m_cache.emplace(hash, PipelineCacheEntry{pipeline, payload.programHash, payload.renderPass,
-                                                 m_frameCounter});
+        m_cache.emplace(hash, pipeline);
         return pipeline;
     }
 
     void PipelineFactory::DestroyAll() {
         for (auto& pair : m_cache) {
-            if (pair.second.pipeline != VK_NULL_HANDLE) {
-                vkDestroyPipeline(m_device, pair.second.pipeline, nullptr);
+            if (pair.second != VK_NULL_HANDLE) {
+                vkDestroyPipeline(m_device, pair.second, nullptr);
             }
         }
         m_cache.clear();
     }
 
-    Uint32 PipelineFactory::OnFrameBoundary() {
-        ++m_frameCounter;
-
-        // Sweep cadence and retire age mirror VkRenderPassManager::OnPresent: an entry
-        // idle for more than kRetireAgeFrames frame boundaries cannot be referenced by
-        // any in-flight command buffer (frames-in-flight <= MOBILEGL_MAGMA_FRAMESINFLIGHT),
-        // so immediate vkDestroyPipeline is safe. The caller must drop its "last
-        // pipeline" memo when this returns non-zero: the memo can return a cached
-        // handle without touching this cache, so an evicted pipeline may still be
-        // memoized (present-less flush loops never reset the memo per frame).
-        constexpr Uint64 kSweepInterval = 256;
-        constexpr Uint64 kRetireAgeFrames = 1024;
-        if ((m_frameCounter % kSweepInterval) != 0) {
-            return 0;
-        }
-
-        Uint32 evicted = 0;
-        for (auto it = m_cache.begin(); it != m_cache.end();) {
-            if (m_frameCounter - it->second.lastUsedFrame > kRetireAgeFrames) {
-                if (it->second.pipeline != VK_NULL_HANDLE) {
-                    vkDestroyPipeline(m_device, it->second.pipeline, nullptr);
-                }
-                it = m_cache.erase(it);
-                ++evicted;
-            } else {
-                ++it;
-            }
-        }
-        if (evicted > 0) {
-            MGLOG_D("PipelineFactory::OnFrameBoundary: evicted %u idle pipelines (%zu remain)", evicted,
-                    m_cache.size());
-        }
-        return evicted;
-    }
-
-    Uint32 PipelineFactory::EvictByRenderPasses(const Vector<VkRenderPass>& renderPasses) {
-        if (renderPasses.empty() || m_cache.empty()) {
-            return 0;
-        }
-        // Sorted-batch membership test keeps a mass eviction (shader-pack switch,
-        // dimension exit) at one O(cache * log batch) scan instead of one full scan
-        // per dying pass.
-        Vector<VkRenderPass> sortedPasses = renderPasses;
-        std::sort(sortedPasses.begin(), sortedPasses.end());
-        Uint32 evicted = 0;
-        for (auto it = m_cache.begin(); it != m_cache.end();) {
-            if (std::binary_search(sortedPasses.begin(), sortedPasses.end(), it->second.renderPass)) {
-                if (it->second.pipeline != VK_NULL_HANDLE) {
-                    vkDestroyPipeline(m_device, it->second.pipeline, nullptr);
-                }
-                it = m_cache.erase(it);
-                ++evicted;
-            } else {
-                ++it;
-            }
-        }
-        if (evicted > 0) {
-            MGLOG_D("PipelineFactory::EvictByRenderPasses: evicted %u pipelines for %zu destroyed render passes",
-                    evicted, sortedPasses.size());
-        }
-        return evicted;
-    }
-
-    Uint32 PipelineFactory::EvictByProgramHash(HashType programHash) {
-        Uint32 evicted = 0;
-        for (auto it = m_cache.begin(); it != m_cache.end();) {
-            if (it->second.programHash == programHash) {
-                if (it->second.pipeline != VK_NULL_HANDLE) {
-                    vkDestroyPipeline(m_device, it->second.pipeline, nullptr);
-                }
-                it = m_cache.erase(it);
-                ++evicted;
-            } else {
-                ++it;
-            }
-        }
-        if (evicted > 0) {
-            MGLOG_D("PipelineFactory::EvictByProgramHash: evicted %u pipelines for program hash 0x%llx",
-                    evicted, static_cast<unsigned long long>(programHash));
-        }
-        return evicted;
-    }
-
     VkPipeline PipelineFactory::CreatePipeline(const PipelineCreatePayload& payload) const {
         MOBILEGL_ASSERT(payload.stages != nullptr && !payload.stages->empty(), "PipelineFactory: stages are empty");
         MOBILEGL_ASSERT(payload.vertexInputState != nullptr, "PipelineFactory: vertexInputState is null");
@@ -383,11 +294,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         ia.topology = payload.topology;
         ia.primitiveRestartEnable = payload.primitiveRestartEnable ? VK_TRUE : VK_FALSE;
 
-        // Only a patch topology has a tessellation stage to configure; leaving the pointer null
-        // otherwise is what the spec expects.
-        VkPipelineTessellationStateCreateInfo tessellation{VK_STRUCTURE_TYPE_PIPELINE_TESSELLATION_STATE_CREATE_INFO};
-        tessellation.patchControlPoints = payload.patchControlPoints;
-
         VkPipelineViewportStateCreateInfo vpci{VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO};
         vpci.viewportCount = 1;
         vpci.scissorCount = 1;
@@ -399,17 +305,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         raster.depthBiasEnable = payload.depthBiasEnable ? VK_TRUE : VK_FALSE;
         raster.rasterizerDiscardEnable = payload.rasterizerDiscardEnable ? VK_TRUE : VK_FALSE;
         raster.lineWidth = 1.0f;
-        // Only chain the struct when the mode is not Vulkan's implicit default: a device without
-        // VK_EXT_provoking_vertex enabled must never see this pNext entry, and the renderer's
-        // selector already collapses to FIRST in exactly that case - so a device without the
-        // extension produces a byte-identical VkGraphicsPipelineCreateInfo to before.
-        VkPipelineRasterizationProvokingVertexStateCreateInfoEXT provokingVertexState{
-            VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_PROVOKING_VERTEX_STATE_CREATE_INFO_EXT};
-        if (payload.provokingVertexMode != VK_PROVOKING_VERTEX_MODE_FIRST_VERTEX_EXT) {
-            provokingVertexState.provokingVertexMode = payload.provokingVertexMode;
-            provokingVertexState.pNext = raster.pNext;
-            raster.pNext = &provokingVertexState;
-        }
 
         VkPipelineMultisampleStateCreateInfo ms{VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO};
         ms.rasterizationSamples = payload.rasterizationSamples;
@@ -463,8 +358,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         gpi.pStages = payload.stages->data();
         gpi.pVertexInputState = payload.vertexInputState;
         gpi.pInputAssemblyState = &ia;
-        gpi.pTessellationState =
-            payload.topology == VK_PRIMITIVE_TOPOLOGY_PATCH_LIST ? &tessellation : nullptr;
         gpi.pViewportState = &vpci;
         gpi.pRasterizationState = &raster;
         gpi.pMultisampleState = &ms;

MobileGL/MG_Backend/DirectVulkan/Renderer/PipelineFactory.h

@@ -30,16 +30,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             Uint32 subpass = 0;
             VkPrimitiveTopology topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
             Bool primitiveRestartEnable = false;
-            // GL_PATCH_VERTICES; only read for a PATCH_LIST topology.
-            Uint32 patchControlPoints = 3;
             VkPolygonMode polygonMode = VK_POLYGON_MODE_FILL;
             VkCullModeFlags cullMode = VK_CULL_MODE_BACK_BIT;
             VkFrontFace frontFace = VK_FRONT_FACE_CLOCKWISE;
-            // GL's provoking vertex, baked into the pipeline (VK_EXT_provoking_vertex). It selects
-            // which vertex a flat varying takes AND the vertex order transform feedback records for
-            // strips/fans, so it is part of the pipeline's identity, not dynamic state. Defaults to
-            // Vulkan's own convention, which is what a device without the extension gets.
-            VkProvokingVertexModeEXT provokingVertexMode = VK_PROVOKING_VERTEX_MODE_FIRST_VERTEX_EXT;
             Bool depthTestEnable = false;
             Bool depthWriteEnable = false;
             Bool depthBiasEnable = false;
@@ -72,26 +65,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkPipeline GetOrCreatePipeline(const PipelineCreatePayload& payload);
         void DestroyAll();
 
-        // Frame boundary hook: ages the pipeline cache and destroys long-unused entries
-        // (their command buffers retired many frames ago), mirroring
-        // VkRenderPassManager::OnPresent's sweep. Returns the number of pipelines
-        // destroyed so the caller can drop any memoized VkPipeline handle.
-        Uint32 OnFrameBoundary();
-        // Destroys every cached pipeline hashed on one of `renderPasses`. Only safe
-        // when the caller guarantees GPU idleness for them - the render-pass manager
-        // calls this (via the renderer) for passes its own >1024-boundary-idle sweep
-        // just evicted, and a pipeline hashed on those handles is only ever bound by
-        // draws that also hit the render-pass entries. Also closes the handle-recycling
-        // hazard: a recycled VkRenderPass value must never serve a stale pipeline.
-        // Batched: one cache scan regardless of how many passes died in the sweep.
-        // Returns the number destroyed (callers invalidate memos when non-zero).
-        Uint32 EvictByRenderPasses(const Vector<VkRenderPass>& renderPasses);
-        // Destroys every cached pipeline built from the program with content hash
-        // `programHash`. Called from the ProgramFactory eviction path, which proves the
-        // same >1024-boundary idleness (the program's pipelines are only bound by draws
-        // that stamp its factory entry). Returns the number destroyed.
-        Uint32 EvictByProgramHash(HashType programHash);
-
         // Driver quirk: suppress depth writes on accumulation-blended pipelines. Multi-pass
         // depth-equality rendering (a blended prepass writes depth that later passes re-test
         // with an equality-inclusive compare on the re-rasterized geometry) requires
@@ -114,26 +87,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         static Bool ShouldSuppressDepthWrite(const PipelineCreatePayload& payload);
 
     private:
-        struct PipelineCacheEntry {
-            VkPipeline pipeline = VK_NULL_HANDLE;
-            // The hashed inputs the eviction paths key on: programHash ties the entry to
-            // its ProgramFactory entry, renderPass records the exact handle the hash
-            // folded in (the hash is one-way, so targeted eviction needs them verbatim).
-            HashType programHash = 0;
-            VkRenderPass renderPass = VK_NULL_HANDLE;
-            // Frame-boundary counter value of the last GetOrCreatePipeline hit; drives
-            // cache eviction (see OnFrameBoundary).
-            Uint64 lastUsedFrame = 0;
-        };
-
         VkPipeline CreatePipeline(const PipelineCreatePayload& payload) const;
 
         VkDevice m_device = VK_NULL_HANDLE;
         const VulkanRendererConfig& m_config;
         VkPipelineCache m_pipelineCache = VK_NULL_HANDLE;
-        UnorderedMap<HashType, PipelineCacheEntry> m_cache;
-        // Monotonic frame-boundary counter (bumped in OnFrameBoundary) for cache aging.
-        Uint64 m_frameCounter = 0;
+        UnorderedMap<HashType, VkPipeline> m_cache;
         static inline XXH64_state_t* m_hashState = XXH64_createState();
         static inline Bool s_suppressBlendedDepthWrite = false;
     };

MobileGL/MG_Backend/DirectVulkan/Renderer/ProgramFactory.cpp

@@ -923,403 +923,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             ProgramFactory::CompileOptionFlags m_transformFlags;
         };
 
-        // Decorates the module's captured varyings for VK_EXT_transform_feedback:
-        // user outputs get XfbBuffer/XfbStride/Offset directly; a captured
-        // gl_Position (a gl_PerVertex member) is mirrored into a dedicated output
-        // variable copied before every OpReturn, BEFORE the position fixup runs,
-        // so the captured value is the shader's own (pre-remap) gl_Position.
-        class XfbCaptureDecoratePass final : public spvtools::opt::Pass {
-        public:
-            struct CapturedVarying {
-                std::string name;
-                Uint32 bufferIndex = 0;
-                Uint32 offsetBytes = 0;
-            };
-            const char* name() const override { return "mobilegl-xfb-capture-decorate"; }
-            XfbCaptureDecoratePass(Vector<CapturedVarying> varyings, Vector<Uint32> strides)
-                : m_varyings(Move(varyings)), m_strides(Move(strides)) {}
-
-            Status Process() override {
-                using namespace spvtools::opt;
-                if (m_varyings.empty()) return Status::SuccessWithoutChange;
-
-                auto entryPointIter = get_module()->entry_points().begin();
-                if (entryPointIter == get_module()->entry_points().end()) return Status::SuccessWithoutChange;
-                spvtools::opt::Instruction* entryPoint = &*entryPointIter;
-                const Uint32 entryFunctionId = entryPoint->GetSingleWordInOperand(1);
-
-                // Name -> result id map from the debug section.
-                std::unordered_map<std::string, Uint32> idsByName;
-                for (auto& debugInst : get_module()->debugs2()) {
-                    if (debugInst.opcode() != spv::Op::OpName) continue;
-                    idsByName[debugInst.GetInOperand(1).AsString()] = debugInst.GetSingleWordInOperand(0);
-                }
-
-                auto* decorationManager = context()->get_decoration_mgr();
-                const auto decorateForXfb = [&](Uint32 targetId, Uint32 bufferIndex, Uint32 offsetBytes) {
-                    const Uint32 stride = bufferIndex < m_strides.size() ? m_strides[bufferIndex] : 0;
-                    decorationManager->AddDecorationVal(targetId, static_cast<Uint32>(spv::Decoration::XfbBuffer),
-                                                        bufferIndex);
-                    decorationManager->AddDecorationVal(targetId, static_cast<Uint32>(spv::Decoration::XfbStride),
-                                                        stride);
-                    decorationManager->AddDecorationVal(targetId, static_cast<Uint32>(spv::Decoration::Offset),
-                                                        offsetBytes);
-                };
-
-                Bool modified = false;
-                Bool needsPositionMirror = false;
-                Uint32 positionBufferIndex = 0;
-                Uint32 positionOffset = 0;
-                for (const auto& varying : m_varyings) {
-                    if (varying.name == "gl_Position") {
-                        needsPositionMirror = true;
-                        positionBufferIndex = varying.bufferIndex;
-                        positionOffset = varying.offsetBytes;
-                        continue;
-                    }
-                    const auto idIt = idsByName.find(varying.name);
-                    if (idIt == idsByName.end()) {
-                        MGLOG_E("XfbCaptureDecoratePass: no SPIR-V variable named '%s'", varying.name.c_str());
-                        continue;
-                    }
-                    decorateForXfb(idIt->second, varying.bufferIndex, varying.offsetBytes);
-                    modified = true;
-                }
-
-                if (needsPositionMirror) {
-                    modified |= MirrorPositionForCapture(entryFunctionId, *entryPoint, positionBufferIndex,
-                                                         positionOffset, decorateForXfb);
-                }
-
-                if (!modified) return Status::SuccessWithoutChange;
-
-                context()->AddCapability(spv::Capability::TransformFeedback);
-                {
-                    auto executionMode = MakeUnique<spvtools::opt::Instruction>(
-                        context(), spv::Op::OpExecutionMode, 0, 0,
-                        std::initializer_list<spvtools::opt::Operand>{
-                            {SPV_OPERAND_TYPE_ID, {entryPoint->GetSingleWordInOperand(1)}},
-                            {SPV_OPERAND_TYPE_EXECUTION_MODE, {static_cast<Uint32>(spv::ExecutionMode::Xfb)}}});
-                    get_module()->AddExecutionMode(Move(executionMode));
-                }
-                context()->InvalidateAnalysesExceptFor(spvtools::opt::IRContext::kAnalysisNone);
-                return Status::SuccessWithChange;
-            }
-
-        private:
-            template <typename DecorateFn>
-            Bool MirrorPositionForCapture(Uint32 entryFunctionId, spvtools::opt::Instruction& entryPoint,
-                                          Uint32 bufferIndex, Uint32 offsetBytes, const DecorateFn& decorateForXfb) {
-                const Uint32 entryPointModel = entryPoint.GetSingleWordInOperand(0);
-                using namespace spvtools::opt;
-                PositionTargetInfo target{};
-                if (!FindPositionTarget(context(), &target)) {
-                    MGLOG_E("XfbCaptureDecoratePass: gl_Position capture requested but no position output found");
-                    return false;
-                }
-                if (!target.isMember) {
-                    // Standalone gl_Position variable: decorate it directly.
-                    decorateForXfb(target.variableId, bufferIndex, offsetBytes);
-                    return true;
-                }
-
-                auto* typeManager = context()->get_type_mgr();
-                const Uint32 mirrorPointerTypeId =
-                    typeManager->FindPointerToType(target.vectorTypeId, spv::StorageClass::Output);
-                if (mirrorPointerTypeId == 0) return false;
-
-                const Uint32 mirrorVariableId = context()->TakeNextId();
-                auto mirrorVariable = MakeUnique<Instruction>(
-                    context(), spv::Op::OpVariable, mirrorPointerTypeId, mirrorVariableId,
-                    std::initializer_list<Operand>{
-                        {SPV_OPERAND_TYPE_STORAGE_CLASS, {static_cast<Uint32>(spv::StorageClass::Output)}}});
-                get_module()->AddGlobalValue(Move(mirrorVariable));
-
-                // A free output location: past every explicitly decorated output.
-                Uint32 mirrorLocation = 0;
-                for (auto& annotation : get_module()->annotations()) {
-                    if (annotation.opcode() != spv::Op::OpDecorate ||
-                        annotation.GetSingleWordInOperand(1) != static_cast<Uint32>(spv::Decoration::Location)) {
-                        continue;
-                    }
-                    mirrorLocation = std::max(mirrorLocation, annotation.GetSingleWordInOperand(2) + 1);
-                }
-                auto* decorationManager = context()->get_decoration_mgr();
-                decorationManager->AddDecorationVal(mirrorVariableId,
-                                                    static_cast<Uint32>(spv::Decoration::Location), mirrorLocation);
-                decorateForXfb(mirrorVariableId, bufferIndex, offsetBytes);
-                entryPoint.AddOperand({SPV_OPERAND_TYPE_ID, {mirrorVariableId}});
-
-                auto* function = context()->GetFunction(entryFunctionId);
-                if (function == nullptr) return false;
-                const auto model = static_cast<spv::ExecutionModel>(entryPointModel);
-                Bool injected = false;
-                for (auto& block : *function) {
-                    for (auto instIter = block.begin(); instIter != block.end(); ++instIter) {
-                        // Geometry stages capture per emitted vertex; other stages at return.
-                        const Bool isInjectionSite =
-                            model == spv::ExecutionModel::Geometry
-                                ? instIter->opcode() == spv::Op::OpEmitVertex
-                                : instIter->opcode() == spv::Op::OpReturn;
-                        if (!isInjectionSite) continue;
-                        InstructionBuilder builder(context(), &*instIter, IRContext::kAnalysisNone);
-                        const Uint32 memberIndexId = builder.GetUintConstantId(target.memberIndex);
-                        auto* access =
-                            builder.AddAccessChain(target.vectorPtrTypeId, target.variableId, {memberIndexId});
-                        if (access == nullptr) return injected;
-                        auto* value = builder.AddLoad(target.vectorTypeId, access->result_id());
-                        if (value == nullptr) return injected;
-                        builder.AddStore(mirrorVariableId, value->result_id());
-                        injected = true;
-                    }
-                }
-                return injected;
-            }
-
-            Vector<CapturedVarying> m_varyings;
-            Vector<Uint32> m_strides;
-        };
-
-        // Adreno 650 (driver 512.502) faults the GPU on an implicit-LOD sample of a full-screen
-        // colour render target: the texture unit's derivative path reads outside the image's
-        // allocation even though the sampler clamps LOD to 0 and the mapping is 1:1. MobileGL's
-        // own default-framebuffer blit shader works around it with textureLod, but an
-        // application's shader (Minecraft's blit.fsh is `texture(InSampler, texCoord)`) cannot be
-        // edited - so rewrite the sample at the SPIR-V level instead.
-        //
-        // The rewrite is only requested for draws whose every sampler binding is clamped to one
-        // mip level, where explicit LOD 0 is exactly what the implicit form must already produce:
-        // lambda' = clamp(lambda + bias, minLod, maxLod) with minLod = maxLod = 0. Bias and MinLod
-        // operands are therefore dropped rather than translated.
-        class ForceExplicitLod0SamplePass final : public spvtools::opt::Pass {
-        public:
-            const char* name() const override { return "force-explicit-lod0-sample"; }
-
-            Status Process() override {
-                Bool isFragment = false;
-                for (auto& entryPoint : get_module()->entry_points()) {
-                    if (entryPoint.opcode() != spv::Op::OpEntryPoint) continue;
-                    if (static_cast<spv::ExecutionModel>(entryPoint.GetSingleWordInOperand(0)) ==
-                        spv::ExecutionModel::Fragment) {
-                        isFragment = true;
-                        break;
-                    }
-                }
-                if (!isFragment) return Status::SuccessWithoutChange;
-
-                // Plan first, mutate second. Materializing the LOD constant is itself a module
-                // change, so it must not happen unless at least one rewrite is going to follow -
-                // otherwise the pass would grow the binary while reporting SuccessWithoutChange.
-                Vector<RewritePlan> plans;
-                for (auto& function : *get_module()) {
-                    for (auto& block : function) {
-                        for (auto& inst : block) {
-                            RewritePlan plan{};
-                            if (PlanRewrite(&inst, plan)) plans.push_back(Move(plan));
-                        }
-                    }
-                }
-                if (plans.empty()) return Status::SuccessWithoutChange;
-
-                const Uint32 zeroId = GetFloatZeroId();
-                if (zeroId == 0) return Status::SuccessWithoutChange;
-
-                for (auto& plan : plans) {
-                    plan.operands.push_back({SPV_OPERAND_TYPE_ID, {zeroId}});
-                    for (auto& operand : plan.trailingOperands) {
-                        plan.operands.push_back(operand);
-                    }
-                    plan.instruction->SetOpcode(plan.opcode);
-                    plan.instruction->SetInOperands(Move(plan.operands));
-                }
-                // Opcodes and operand lists changed underneath every cached analysis.
-                context()->InvalidateAnalysesExceptFor(spvtools::opt::IRContext::kAnalysisNone);
-                return Status::SuccessWithChange;
-            }
-
-        private:
-            struct RewritePlan {
-                spvtools::opt::Instruction* instruction = nullptr;
-                spv::Op opcode = spv::Op::OpNop;
-                // Everything up to and including the Image Operands mask; the Lod id and the
-                // trailing operand values are appended once the constant exists.
-                Vector<spvtools::opt::Operand> operands;
-                Vector<spvtools::opt::Operand> trailingOperands;
-            };
-
-            // Image Operands bits that may accompany an implicit-LOD sample, in the canonical
-            // ascending order SPIR-V requires the operand values to appear in.
-            static constexpr Uint32 kBias = 0x1;
-            static constexpr Uint32 kLod = 0x2;
-            static constexpr Uint32 kGrad = 0x4;
-            static constexpr Uint32 kConstOffset = 0x8;
-            static constexpr Uint32 kOffset = 0x10;
-            static constexpr Uint32 kConstOffsets = 0x20;
-            static constexpr Uint32 kSample = 0x40;
-            static constexpr Uint32 kMinLod = 0x80;
-            static constexpr Uint32 kKnownMask = 0xFF;
-
-            Uint32 GetFloatZeroId() {
-                // Reuse a 32-bit float type already in the module; a shader that samples always has
-                // one, and looking it up avoids depending on type-creation API details.
-                Uint32 floatTypeId = 0;
-                for (auto& inst : get_module()->types_values()) {
-                    if (inst.opcode() == spv::Op::OpTypeFloat && inst.NumInOperands() >= 1 &&
-                        inst.GetSingleWordInOperand(0) == 32) {
-                        floatTypeId = inst.result_id();
-                        break;
-                    }
-                }
-                if (floatTypeId == 0) return 0;
-
-                const auto* floatType = context()->get_type_mgr()->GetType(floatTypeId);
-                if (floatType == nullptr) return 0;
-                const auto zeroBits = std::bit_cast<Uint32>(0.0f);
-                const auto* zeroConst = context()->get_constant_mgr()->GetConstant(floatType, {zeroBits});
-                if (zeroConst == nullptr) return 0;
-                auto* zeroInst = context()->get_constant_mgr()->GetDefiningInstruction(zeroConst);
-                return zeroInst != nullptr ? zeroInst->result_id() : 0;
-            }
-
-            static Bool MapOpcode(spv::Op op, spv::Op& outOpcode, Uint32& outFixedOperandCount) {
-                switch (op) {
-                case spv::Op::OpImageSampleImplicitLod:
-                    outOpcode = spv::Op::OpImageSampleExplicitLod;
-                    outFixedOperandCount = 2; // sampled image, coordinate
-                    return true;
-                case spv::Op::OpImageSampleProjImplicitLod:
-                    outOpcode = spv::Op::OpImageSampleProjExplicitLod;
-                    outFixedOperandCount = 2;
-                    return true;
-                case spv::Op::OpImageSampleDrefImplicitLod:
-                    outOpcode = spv::Op::OpImageSampleDrefExplicitLod;
-                    outFixedOperandCount = 3; // sampled image, coordinate, Dref
-                    return true;
-                case spv::Op::OpImageSampleProjDrefImplicitLod:
-                    outOpcode = spv::Op::OpImageSampleProjDrefExplicitLod;
-                    outFixedOperandCount = 3;
-                    return true;
-                default:
-                    return false;
-                }
-            }
-
-            static Bool PlanRewrite(spvtools::opt::Instruction* inst, RewritePlan& outPlan) {
-                spv::Op newOpcode = spv::Op::OpNop;
-                Uint32 fixedCount = 0;
-                if (!MapOpcode(inst->opcode(), newOpcode, fixedCount)) return false;
-                if (inst->NumInOperands() < fixedCount) return false;
-
-                Uint32 mask = 0;
-                Uint32 next = fixedCount;
-                if (inst->NumInOperands() > fixedCount) {
-                    mask = inst->GetSingleWordInOperand(fixedCount);
-                    next = fixedCount + 1;
-                }
-                // An operand this pass does not model would be silently reordered or dropped, and
-                // Grad cannot legally accompany an implicit-LOD sample: leave such an instruction be.
-                if ((mask & ~kKnownMask) != 0 || (mask & kGrad) != 0) return false;
-
-                Vector<spvtools::opt::Operand> fixedOperands;
-                fixedOperands.reserve(fixedCount + 1);
-                for (Uint32 i = 0; i < fixedCount; ++i) {
-                    fixedOperands.push_back(inst->GetInOperand(i));
-                }
-
-                // Collect the surviving operand values in the same ascending-bit order they were
-                // encoded in, so the rebuilt list stays canonical.
-                Uint32 keptMask = kLod;
-                Vector<spvtools::opt::Operand> keptOperands;
-                static constexpr Uint32 kOrderedBits[] = {kBias,   kLod,          kGrad,   kConstOffset,
-                                                          kOffset, kConstOffsets, kSample, kMinLod};
-                for (const Uint32 bit : kOrderedBits) {
-                    if ((mask & bit) == 0) continue;
-                    if (next >= inst->NumInOperands()) return false;
-                    const spvtools::opt::Operand value = inst->GetInOperand(next++);
-                    // Bias and MinLod only shift a lambda that is already clamped to 0, and any
-                    // original Lod is replaced by the constant the caller appends.
-                    if (bit == kBias || bit == kMinLod || bit == kLod) continue;
-                    keptMask |= bit;
-                    keptOperands.push_back(value);
-                }
-
-                fixedOperands.push_back({SPV_OPERAND_TYPE_IMAGE, {keptMask}});
-                outPlan.instruction = inst;
-                outPlan.opcode = newOpcode;
-                outPlan.operands = Move(fixedOperands);
-                outPlan.trailingOperands = Move(keptOperands);
-                return true;
-            }
-        };
-
-        spvtools::Optimizer::PassToken CreateForceExplicitLod0SamplePass() {
-            return spvtools::Optimizer::PassToken(MakeUnique<ForceExplicitLod0SamplePass>());
-        }
-
-        Bool TransformSpirvForExplicitLod0Sampling(const Vector<Uint>& input, Vector<Uint>& output) {
-            if (input.empty()) {
-                output.clear();
-                return true;
-            }
-            spvtools::Optimizer optimizer(SPV_ENV_VULKAN_1_3);
-            spvtools::OptimizerOptions options;
-            // Matches the position-fix pass: this build of spirv-tools asserts rather than
-            // reporting, so validation stays off in the shipping path.
-            options.set_run_validator(false);
-            optimizer.SetMessageConsumer([](spv_message_level_t, const char*, const spv_position_t&,
-                                            const char* message) {
-                MGLOG_E("Vulkan: explicit-LOD0 pass: %s", message != nullptr ? message : "");
-            });
-            optimizer.RegisterPass(CreateForceExplicitLod0SamplePass());
-
-            const Bool success = optimizer.Run(input.data(), input.size(), &output, options);
-            if (!success) {
-                MGLOG_E("Vulkan: explicit-LOD0 sampling pass failed; keeping the original module");
-                output = input;
-            }
-            return success;
-        }
-
         spvtools::Optimizer::PassToken CreateGlToVulkanPositionFixPass(
             ProgramFactory::CompileOptionFlags transformFlags) {
             return spvtools::Optimizer::PassToken(MakeUnique<GlToVulkanPositionFixPass>(transformFlags));
         }
 
-        Bool TransformSpirvForXfbCapture(const Vector<Uint>& input, Vector<Uint>& output,
-                                         const MG_State::GLState::ProgramObject& program) {
-            if (input.empty()) {
-                output.clear();
-                return true;
-            }
-            Vector<XfbCaptureDecoratePass::CapturedVarying> varyings;
-            varyings.reserve(program.GetTransformFeedbackVaryingCount());
-            for (const auto& varying : program.GetTransformFeedbackVaryings()) {
-                varyings.push_back({varying.name, varying.bufferIndex, varying.offsetBytes});
-            }
-            Vector<Uint32> strides;
-            strides.reserve(program.GetTransformFeedbackBufferCount());
-            for (SizeT i = 0; i < program.GetTransformFeedbackBufferCount(); ++i) {
-                strides.push_back(program.GetTransformFeedbackStride(static_cast<Uint32>(i)));
-            }
-
-            spvtools::Optimizer optimizer(SPV_ENV_VULKAN_1_3);
-            spvtools::OptimizerOptions options;
-            options.set_run_validator(false);
-            optimizer.SetMessageConsumer([](spv_message_level_t, const char*, const spv_position_t&,
-                                            const char* message) {
-                MGLOG_E("Vulkan: xfb capture pass: %s", message != nullptr ? message : "");
-            });
-            optimizer.RegisterPass(spvtools::Optimizer::PassToken(
-                MakeUnique<XfbCaptureDecoratePass>(Move(varyings), Move(strides))));
-
-            const Bool success = optimizer.Run(input.data(), input.size(), &output, options);
-            if (!success) {
-                MGLOG_E("Vulkan: xfb capture decoration pass failed; keeping the original module");
-                output = input;
-            }
-            return success;
-        }
-
         Bool TransformSpirvForVulkanPositionFix(const Vector<Uint>& input, Vector<Uint>& output,
                                                 ProgramFactory::CompileOptionFlags transformFlags) {
             if (input.empty()) {
@@ -1761,25 +1369,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             XXHASH_VERIFY(XXH64_update(m_hashState, &binding, sizeof(binding)));
         }
 
-        // The transform feedback capture layout is baked into the modules by
-        // XfbCaptureDecoratePass rather than coming from the SPIR-V, so it has to be part of
-        // the key: two programs can share every shader and still capture differently, which
-        // is exactly what changing the buffer mode does (glTransformFeedbackVaryings with the
-        // same varyings but GL_SEPARATE_ATTRIBS instead of GL_INTERLEAVED_ATTRIBS). Only
-        // hashed for a capturing compile, so nothing else changes key.
-        if (flags & CompileOptionBit::XfbCapture) {
-            for (const auto& varying : program.GetTransformFeedbackVaryings()) {
-                XXHASH_VERIFY(XXH64_update(m_hashState, varying.name.data(), varying.name.size()));
-                XXHASH_VERIFY(XXH64_update(m_hashState, &varying.bufferIndex, sizeof(varying.bufferIndex)));
-                XXHASH_VERIFY(XXH64_update(m_hashState, &varying.offsetBytes, sizeof(varying.offsetBytes)));
-            }
-            const SizeT bufferCount = program.GetTransformFeedbackBufferCount();
-            for (SizeT i = 0; i < bufferCount; ++i) {
-                const Uint32 stride = program.GetTransformFeedbackStride(static_cast<Uint32>(i));
-                XXHASH_VERIFY(XXH64_update(m_hashState, &stride, sizeof(stride)));
-            }
-        }
-
         HashType hash = XXH64_digest(m_hashState);
         return hash;
     }
@@ -2348,16 +1937,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         pipelineLayoutInfo.pSetLayouts = &entry.descriptorSetLayout;
         VK_VERIFY(vkCreatePipelineLayout(m_device, &pipelineLayoutInfo, nullptr, &entry.pipelineLayout),
                   "ProgramFactory::ReflectLayout, vkCreatePipelineLayout");
-
-        // Built here rather than where bindingKinds is sized: at that point the vector is only
-        // zero-initialised and the kinds are assigned further down, so a list built there would be
-        // empty. Ascending by construction because the index walks upward.
-        entry.activeBindings.clear();
-        for (Uint32 binding = 0; binding < static_cast<Uint32>(entry.bindingKinds.size()); ++binding) {
-            if (entry.bindingKinds[binding] != DescriptorBindingKind::None) {
-                entry.activeBindings.push_back(binding);
-            }
-        }
     }
 
     const ProgramFactory::VkProgramObject& ProgramFactory::GetOrCreateProgram(
@@ -2371,17 +1950,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
         auto it = m_cache.find(hash);
         if (it != m_cache.end()) {
-            // Every draw/dispatch funnels through this lookup (the renderer memos only
-            // skip re-hashing, never the factory lookup), so an actively-used entry is
-            // stamped at least once per frame boundary and can never be aged out while
-            // any in-flight command buffer still references it.
-            it->second.lastUsedFrame = m_frameCounter;
             return it->second;
         }
 
         auto& entry = m_cache[hash];
         entry.hash = hash;
-        entry.lastUsedFrame = m_frameCounter;
         auto& shaders = program.GetAttachedShaders();
         auto& spirv = program.GetGeneratedSpirv();
         Vector<Vector<Uint>> moduleSpirvs(spirv.size());
@@ -2394,40 +1967,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
             // Apply position fixup if needed
             if (fixupStage != ShaderStage::Unknown && shaders[i] && shaders[i]->GetShaderStage() == fixupStage) {
-                const Vector<Uint>* fixupInput = &spv;
-                Vector<Uint> xfbSpirv;
-                if ((flags & ProgramFactory::CompileOptionBit::XfbCapture) &&
-                    program.GetTransformFeedbackVaryingCount() > 0) {
-                    // Decorate BEFORE the position fixup so a captured gl_Position
-                    // mirror copies the shader's own (pre-remap) value.
-                    if (TransformSpirvForXfbCapture(spv, xfbSpirv, program)) {
-                        fixupInput = &xfbSpirv;
-                    }
-                }
-                TransformSpirvForVulkanPositionFix(*fixupInput, moduleSpirvs[i], flags);
+                TransformSpirvForVulkanPositionFix(spv, moduleSpirvs[i], flags);
             } else {
                 moduleSpirvs[i] = spv;
             }
 
-            if ((flags & ProgramFactory::CompileOptionBit::ExplicitLod0Sampling) && shaders[i] &&
-                shaders[i]->GetShaderStage() == ShaderStage::Fragment) {
-                Vector<Uint> explicitLodSpirv;
-                if (TransformSpirvForExplicitLod0Sampling(moduleSpirvs[i], explicitLodSpirv)) {
-                    moduleSpirvs[i] = Move(explicitLodSpirv);
-                }
-            }
-
-            // Vulkan's SPIR-V environment has no rectangle image dimension, so a
-            // GL_TEXTURE_RECTANGLE lookup has to become the 2D one the texture is really
-            // stored as - which addresses [0,1] where the application addressed texels.
-            {
-                Vector<Uint> rectLoweredSpirv;
-                if (MG_Util::ShaderTranspiler::ShaderCompiler::LowerRectImages(moduleSpirvs[i], rectLoweredSpirv) &&
-                    !rectLoweredSpirv.empty()) {
-                    moduleSpirvs[i] = Move(rectLoweredSpirv);
-                }
-            }
-
             // GL apps depend on cross-program position invariance for multi-pass equality
             // depth tests (MC 26.3's OIT re-draws the cloud geometry with GEQUAL against the
             // depth its own first pass wrote); decorate Position outputs Invariant so
@@ -2468,33 +2012,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 }
             }
 
-            // A 64-bit vertex input has to arrive as its 32-bit word pair: VK_FORMAT_R64*_SFLOAT is
-            // optional and lavapipe advertises none of them at all. The pass is unconditional so it
-            // always agrees with the Float64 case in VertexInputStateFactory::ToVkVertexFormat, and
-            // ReflectVertexInputs below then sees an ordinary uvec2/uvec4 input.
-            //
-            // Failure here is not recoverable and must not be swallowed: ToVkVertexFormat has already
-            // committed to R32G32{,B32A32}_UINT for the attribute, so a module still declaring
-            // `in double` would reconcile to Unknown and build a pipeline with a UINT format under a
-            // double input - garbage with no diagnostic anywhere.
-            if (shaders[i] && shaders[i]->GetShaderStage() == ShaderStage::Vertex) {
-                Vector<Uint> packedSpirv;
-                const Bool packOk = MG_Util::ShaderTranspiler::ShaderCompiler::PackDoubleVertexInputsForVulkan(
-                    moduleSpirvs[i], packedSpirv);
-                MOBILEGL_ASSERT(packOk,
-                                "ProgramFactory: 64-bit vertex input packing failed for program %u; the "
-                                "vertex-input format and the shader input type now disagree",
-                                program.GetExternalIndex());
-                if (packOk) {
-                    moduleSpirvs[i] = std::move(packedSpirv);
-                } else {
-                    MGLOG_E("ProgramFactory: failed to pack 64-bit vertex inputs for program %u; "
-                            "double-typed vertex attributes will be fetched as uint32 words and not "
-                            "reinterpreted",
-                            program.GetExternalIndex());
-                }
-            }
-
             // When Vulkan can legally access storage images without a statically declared
             // format, let GL's glBindImageTexture format select the runtime image view. This
             // provides desktop-driver-compatible behavior for packs such as iterationRP, whose
@@ -2551,42 +2068,4 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         return entry;
     }
-
-    void ProgramFactory::OnFrameBoundary() {
-        ++m_frameCounter;
-
-        // Sweep cadence and retire age mirror VkRenderPassManager::OnPresent: an entry
-        // idle for more than kRetireAgeFrames frame boundaries cannot be referenced by
-        // any in-flight command buffer (frames-in-flight <= MOBILEGL_MAGMA_FRAMESINFLIGHT),
-        // so its shader modules and layouts are destroyed immediately - no deferred-
-        // destroy machinery needed. Eviction is content-based, never tied to
-        // glDeleteProgram: the cache is content-hash-shared across GL programs, so a
-        // delete-driven erase could free an entry another live program still resolves.
-        // An evicted entry self-heals - the frontend program keeps its generated
-        // SPIR-V, so the next GetOrCreateProgram rebuilds it (this also covers the
-        // renderer's internal blit/depth-mipmap programs).
-        constexpr Uint64 kSweepInterval = 256;
-        constexpr Uint64 kRetireAgeFrames = 1024;
-        if ((m_frameCounter % kSweepInterval) != 0) {
-            return;
-        }
-
-        for (auto it = m_cache.begin(); it != m_cache.end();) {
-            if (m_frameCounter - it->second.lastUsedFrame > kRetireAgeFrames) {
-                const HashType hash = it->first;
-                const VkDescriptorSetLayout descriptorSetLayout = it->second.descriptorSetLayout;
-                MGLOG_D("ProgramFactory::OnFrameBoundary: evicting idle program entry hash=0x%llx",
-                        static_cast<unsigned long long>(hash));
-                // erase runs ~VkProgramObject (modules/layouts destroyed); notify after
-                // so an observer never observes a half-destroyed entry through a lookup.
-                // Observers only need the handle values to purge their keyed caches.
-                it = m_cache.erase(it);
-                if (m_evictionObserver != nullptr) {
-                    m_evictionObserver->OnProgramEvicted(hash, descriptorSetLayout);
-                }
-            } else {
-                ++it;
-            }
-        }
-    }
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/ProgramFactory.h

@@ -42,16 +42,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             SurfaceRotate90 = 1 << 2,
             SurfaceRotate180 = 1 << 3,
             SurfaceRotate270 = 1 << 4,
-            // Rewrites the fragment stage's implicit-LOD image samples to explicit LOD 0.
-            // Only ever set for a draw whose every sampler binding is clamped to a single mip
-            // level, which makes the two forms produce identical texels (the implicit lambda is
-            // clamped into [minLod, maxLod] = [0, 0] regardless of derivatives or bias).
-            ExplicitLod0Sampling = 1 << 5,
-            // Decorates the last vertex-processing stage's captured varyings with
-            // XfbBuffer/XfbStride/Offset (VK_EXT_transform_feedback). Set only for draws
-            // recorded while GL transform feedback is active, so plain draws keep the
-            // undecorated variant.
-            XfbCapture = 1 << 6,
         };
         using CompileOptionFlags = Flags<CompileOptionBit>;
         using HashType = Uint64;
@@ -67,12 +57,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VkDescriptorSetLayout descriptorSetLayout = VK_NULL_HANDLE;
             VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
             Vector<DescriptorBindingKind> bindingKinds;
-            // The bindings this program actually declares, ascending. bindingKinds is sized to the
-            // 256-binding cap while a real GL program uses 1-8, so the per-draw descriptor walk was
-            // scanning 256 slots to find a handful. MUST stay ascending: Vulkan consumes
-            // pDynamicOffsets in binding order and the writer pushes them in iteration order, so an
-            // unordered list would silently mis-pair dynamic offsets with their uniform blocks.
-            Vector<Uint32> activeBindings;
             Vector<Uint32> dynamicBindings;
             Vector<Int> uniformBlockIndexByBinding;
             // Descriptor count per binding (1 except for UBO instance arrays, which occupy one
@@ -104,9 +88,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             // gl_FragDepth); shader-computed depth is immune to the cross-pipeline
             // position-invariance quirk (see PipelineFactory::ShouldSuppressDepthWrite).
             Bool fragmentReplacesDepth = false;
-            // Frame-boundary counter value of the last GetOrCreateProgram hit; drives
-            // cache eviction (see OnFrameBoundary).
-            Uint64 lastUsedFrame = 0;
 
             static inline VkDevice s_device = VK_NULL_HANDLE;
 
@@ -120,7 +101,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 descriptorSetLayout = other.descriptorSetLayout;
                 pipelineLayout = other.pipelineLayout;
                 bindingKinds = std::move(other.bindingKinds);
-                activeBindings = std::move(other.activeBindings);
                 dynamicBindings = std::move(other.dynamicBindings);
                 uniformBlockIndexByBinding = std::move(other.uniformBlockIndexByBinding);
                 bindingDescriptorCounts = std::move(other.bindingDescriptorCounts);
@@ -144,7 +124,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 producerOutputComponentCount = other.producerOutputComponentCount;
                 fragmentInputComponentCount = other.fragmentInputComponentCount;
                 fragmentReplacesDepth = other.fragmentReplacesDepth;
-                lastUsedFrame = other.lastUsedFrame;
                 other.hash = 0;
                 other.descriptorSetLayout = VK_NULL_HANDLE;
                 other.pipelineLayout = VK_NULL_HANDLE;
@@ -156,7 +135,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 other.producerOutputComponentCount = 0;
                 other.fragmentInputComponentCount = 0;
                 other.fragmentReplacesDepth = false;
-                other.lastUsedFrame = 0;
             }
             VkProgramObject& operator=(VkProgramObject&& other) noexcept {
                 if (this == &other) {
@@ -169,7 +147,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 descriptorSetLayout = other.descriptorSetLayout;
                 pipelineLayout = other.pipelineLayout;
                 bindingKinds = std::move(other.bindingKinds);
-                activeBindings = std::move(other.activeBindings);
                 dynamicBindings = std::move(other.dynamicBindings);
                 uniformBlockIndexByBinding = std::move(other.uniformBlockIndexByBinding);
                 bindingDescriptorCounts = std::move(other.bindingDescriptorCounts);
@@ -193,7 +170,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 producerOutputComponentCount = other.producerOutputComponentCount;
                 fragmentInputComponentCount = other.fragmentInputComponentCount;
                 fragmentReplacesDepth = other.fragmentReplacesDepth;
-                lastUsedFrame = other.lastUsedFrame;
                 other.hash = 0;
                 other.descriptorSetLayout = VK_NULL_HANDLE;
                 other.pipelineLayout = VK_NULL_HANDLE;
@@ -205,7 +181,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 other.producerOutputComponentCount = 0;
                 other.fragmentInputComponentCount = 0;
                 other.fragmentReplacesDepth = false;
-                other.lastUsedFrame = 0;
                 return *this;
             }
 
@@ -235,18 +210,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             }
         };
 
-        // Notified when the OnFrameBoundary sweep destroys an aged-out cache entry,
-        // carrying the entry's content hash and the VkDescriptorSetLayout it owned.
-        // Dependent caches (compute pipelines, PipelineFactory entries, UniformManager's
-        // per-layout descriptor sets) must purge in the same step: after vkDestroy the
-        // layout handle value may be recycled for an unrelated layout, and the program
-        // hash may be re-inserted by a later rebuild of the same content.
-        class IEvictionObserver {
-        public:
-            virtual ~IEvictionObserver() = default;
-            virtual void OnProgramEvicted(HashType programHash, VkDescriptorSetLayout descriptorSetLayout) = 0;
-        };
-
         explicit ProgramFactory(VkDevice device, const VulkanRendererConfig& config, Uint32 maxBindings = 16,
                                 Bool shaderDrawParametersEnabled = false,
                                 Bool unformattedFloatStorageImagesEnabled = false)
@@ -262,13 +225,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         const VkProgramObject& GetOrCreateProgram(
             const MG_State::GLState::ProgramObject& program, CompileOptionFlags flags);
 
-        // Observer may be null (no notifications). Not owned.
-        void SetEvictionObserver(IEvictionObserver* observer) { m_evictionObserver = observer; }
-        // Frame boundary hook: ages the program cache and evicts long-unused entries
-        // (their command buffers retired many frames ago), mirroring
-        // VkRenderPassManager::OnPresent's sweep.
-        void OnFrameBoundary();
-
         static VkShaderStageFlagBits ToVkStage(ShaderStage stage);
         static VkFormat ConvertSpirvImageFormatToVkFormat(SpvImageFormat format);
         static SamplerNumericDomain UniformTypeToSamplerNumericDomain(GLenum glType);
@@ -310,9 +266,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // shaderStorageImageReadWithoutFormat and shaderStorageImageWriteWithoutFormat.
         Bool m_unformattedFloatStorageImagesEnabled = false;
         mutable ProgramLookupCache m_lastLookup;
-        // Monotonic frame-boundary counter (bumped in OnFrameBoundary) for cache aging.
-        Uint64 m_frameCounter = 0;
-        IEvictionObserver* m_evictionObserver = nullptr;
         static inline XXH64_state_t* m_hashState = XXH64_createState();
     };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/SwapchainObject.cpp

@@ -247,11 +247,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         m_surfaceFormat = {createInfo.imageFormat, createInfo.imageColorSpace};
         m_extent = createInfo.imageExtent;
-        // The surface-space extent this swapchain was built from, i.e. before the
-        // quarter-turn swap above. Out-of-date checks must compare in THIS space: comparing a
-        // freshly queried currentExtent against the swapped m_extent flips axes every rotation
-        // and makes the comparison alternate forever.
-        m_surfaceExtent = defaultFramebufferExtent;
         m_preTransform = createInfo.preTransform;
 
         VK_VERIFY(vkCreateSwapchainKHR(device, &createInfo, nullptr, &m_swapchain));
@@ -262,9 +257,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_images.resize(imageCount, VK_NULL_HANDLE);
         VK_VERIFY(vkGetSwapchainImagesKHR(device, m_swapchain, &imageCount, m_images.data()));
         m_imageLayouts.assign(imageCount, VK_IMAGE_LAYOUT_UNDEFINED);
-        // Fresh swapchain images hold garbage until a render pass stores into them.
-        m_imageContentDefined.assign(imageCount, false);
-        m_depthStencilContentDefined.assign(imageCount, false);
 
         CreateImageViews(device);
         CreateDepthStencilResources(device, physicalDevice);
@@ -436,39 +428,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         m_images.clear();
         m_imageLayouts.clear();
-        m_imageContentDefined.clear();
-        m_depthStencilContentDefined.clear();
         m_preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
     }
 
-    Bool SwapchainObject::IsImageContentDefined(Uint32 index) const {
-        MOBILEGL_ASSERT(index < m_imageContentDefined.size(), "Swapchain image content index out of range");
-        return m_imageContentDefined[index];
-    }
-
-    void SwapchainObject::SetImageContentDefined(Uint32 index, Bool defined) {
-        MOBILEGL_ASSERT(index < m_imageContentDefined.size(), "Swapchain image content index out of range");
-        m_imageContentDefined[index] = defined;
-    }
-
-    Bool SwapchainObject::IsDepthStencilContentDefined(Uint32 index) const {
-        MOBILEGL_ASSERT(index < m_depthStencilContentDefined.size(),
-                        "Swapchain depth/stencil content index out of range");
-        return m_depthStencilContentDefined[index];
-    }
-
-    void SwapchainObject::SetDepthStencilContentDefined(Uint32 index, Bool defined) {
-        MOBILEGL_ASSERT(index < m_depthStencilContentDefined.size(),
-                        "Swapchain depth/stencil content index out of range");
-        m_depthStencilContentDefined[index] = defined;
-    }
-
-    void SwapchainObject::SetAllDepthStencilContentUndefined() {
-        for (SizeT i = 0; i < m_depthStencilContentDefined.size(); ++i) {
-            m_depthStencilContentDefined[i] = false;
-        }
-    }
-
     VkImage SwapchainObject::GetImage(Uint32 index) const {
         MOBILEGL_ASSERT(index < m_images.size(), "Swapchain image index out of range");
         return m_images[index];

MobileGL/MG_Backend/DirectVulkan/Renderer/SwapchainObject.h

@@ -35,9 +35,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkSwapchainKHR GetHandle() const { return m_swapchain; }
         const VkSurfaceFormatKHR& GetSurfaceFormat() const { return m_surfaceFormat; }
         VkExtent2D GetExtent() const { return m_extent; }
-        // Surface-space extent (before the pre-rotation quarter-turn swap) this swapchain was
-        // created from - the value to compare a freshly queried currentExtent against.
-        VkExtent2D GetSurfaceExtent() const { return m_surfaceExtent; }
         VkSurfaceTransformFlagBitsKHR GetPreTransform() const { return m_preTransform; }
         const Vector<VkImage>& GetImages() const { return m_images; }
         const Vector<VkImageView>& GetImageViews() const { return m_imageViews; }
@@ -52,21 +49,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void SetImageLayout(Uint32 index, VkImageLayout layout);
         SizeT GetImageCount() const { return m_images.size(); }
 
-        // EGL content-validity tracking for the default framebuffer. A color
-        // buffer's content is undefined once its image has been presented
-        // (EGL_BUFFER_DESTROYED swap behaviour, the implementation default),
-        // and every ancillary (depth/stencil) buffer's content is undefined
-        // after ANY swap regardless of swap behaviour (EGL 1.5 §3.10.1). The
-        // render-pass manager turns an undefined attachment's tile load into
-        // LOAD_OP_DONT_CARE. Flags start false (a fresh swapchain image holds
-        // garbage) and a render pass storing into an attachment sets it back
-        // to defined.
-        Bool IsImageContentDefined(Uint32 index) const;
-        void SetImageContentDefined(Uint32 index, Bool defined);
-        Bool IsDepthStencilContentDefined(Uint32 index) const;
-        void SetDepthStencilContentDefined(Uint32 index, Bool defined);
-        void SetAllDepthStencilContentUndefined();
-
     private:
         void CreateImageViews(VkDevice device);
         void CreateDepthStencilResources(VkDevice device, VkPhysicalDevice physicalDevice);
@@ -81,7 +63,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkSwapchainKHR m_swapchain = VK_NULL_HANDLE;
         VkSurfaceFormatKHR m_surfaceFormat{};
         VkExtent2D m_extent{};
-        VkExtent2D m_surfaceExtent{};
         VkSurfaceTransformFlagBitsKHR m_preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
         Vector<VkImage> m_images;
         Vector<VkImageView> m_imageViews;
@@ -92,7 +73,5 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Vector<VkDeviceMemory> m_depthStencilImageMemories;
         Vector<VkImageView> m_depthStencilImageViews;
         Vector<VkImageLayout> m_depthStencilImageLayouts;
-        Vector<Bool> m_imageContentDefined;
-        Vector<Bool> m_depthStencilContentDefined;
     };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/UniformManager.cpp

@@ -18,7 +18,6 @@
 #include "MG_Util/Converters/MGToVk/TextureEnumConverter.h"
 #include "MG_Util/Metrics/TextureMetrics.h"
 #include <Config.h>
-#include <algorithm>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
@@ -205,7 +204,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // The frame's descriptor sets are recycled above, so last frame's reuse target
         // is gone: start the per-draw descriptor-reuse cache fresh this frame.
         m_hasLastDescriptor = false;
-        m_lastBindValid = false;
         // Re-fingerprint the bound sampler set fresh this frame so any GL object address
         // reuse cannot outlive a single frame (see SamplerResolveMemo).
         for (auto& memo : m_samplerResolveMemo) {
@@ -213,40 +211,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
     }
 
-    void UniformManager::OnDescriptorSetLayoutDestroyed(VkDescriptorSetLayout descriptorSetLayout) {
-        SizeT purgedSets = 0;
-        for (auto& frame : m_frames) {
-            const auto it = frame.descriptorSetCacheByLayout.find(descriptorSetLayout);
-            if (it == frame.descriptorSetCacheByLayout.end()) {
-                continue;
-            }
-            // Free the sets back to their pools and credit the bucket accounting, so
-            // program churn recycles pool capacity instead of abandoning the slots.
-            // GPU-safe: the layout only dies after >1024 idle frame boundaries, so no
-            // in-flight command buffer references these sets.
-            for (const auto& cached : it->second.sets) {
-                if (cached.set == VK_NULL_HANDLE) {
-                    continue;
-                }
-                vkFreeDescriptorSets(m_device, cached.pool, 1, &cached.set);
-                const auto bucket = std::find_if(
-                    frame.descriptorPools.begin(), frame.descriptorPools.end(),
-                    [&cached](const DescriptorPoolBucket& candidate) { return candidate.handle == cached.pool; });
-                if (bucket != frame.descriptorPools.end() && bucket->allocatedSets > 0) {
-                    --bucket->allocatedSets;
-                }
-            }
-            purgedSets += it->second.sets.size();
-            frame.descriptorSetCacheByLayout.erase(it);
-        }
-        if (purgedSets > 0) {
-            // The per-draw reuse memo folds the layout handle into its signature; drop
-            // it so a recycled handle value cannot revive a purged set mid-frame.
-            m_hasLastDescriptor = false;
-            MGLOG_D("UniformDescriptorBinder: freed %zu descriptor sets for destroyed layout", purgedSets);
-        }
-    }
-
     Bool UniformManager::ResolveSamplerDescriptor(VkCommandBuffer commandBuffer,
                                                             const MG_State::GLState::ProgramObject& program,
                                                             const ProgramFactory::VkProgramObject& programObj,
@@ -266,24 +230,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         const auto& samplerOverride = textureUnit.GetSamplerObject();
         const auto preferredTarget = programObj.samplerTextureTargetByBinding[binding];
         SharedPtr<MG_State::GLState::ITextureObject> fallbackHolder;
-        // A texture that fails the completeness rules for the filter in effect reads
-        // (0, 0, 0, 1), which is exactly what the fallback texture holds - so it takes the
-        // same route as a sampler with nothing bound.
-        if (texture != nullptr &&
-            MG_State::GLState::SamplesAsIncompleteTexture(
-                texture, samplerOverride ? samplerOverride.get() : texture->GetSamplerObject().get())) {
-            texture = nullptr;
-        }
         if (texture == nullptr) {
             fallbackHolder = GetFallbackTexture(preferredTarget);
             texture = fallbackHolder.get();
-            if (texture == nullptr) {
-                MGLOG_E("ResolveSamplerDescriptor: no fallback texture available for binding=%u ('%s') "
-                        "location=%d unit=%d target=%d",
-                        binding, programObj.samplerNameByBinding[binding].c_str(), location, unit,
-                        static_cast<Int>(preferredTarget));
-                return false;
-            }
+            MOBILEGL_ASSERT(texture != nullptr,
+                            "ResolveSamplerDescriptor: no fallback texture available for binding=%u location=%d unit=%d target=%d",
+                            binding, location, unit, static_cast<Int>(preferredTarget));
             MGLOG_W(
                 "ResolveSamplerDescriptor: using fallback texture for unbound sampler binding=%u ('%s') location=%d unit=%d target=%d",
                 binding, programObj.samplerNameByBinding[binding].c_str(), location, unit,
@@ -398,28 +350,24 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             const Uint16 samplerVersion = samplerToUse->GetVersion();
             const Uint64 textureLifetimeId = texture->GetLifetimeId();
             const Uint16 textureParamsVersion = texture->GetTextureParamsVersion();
-            // The sampler's LOD clamp depends on how many levels the sampled view exposes, and that
-            // follows uploads as well as GL parameters - so it belongs in the memo key too.
-            const Uint32 viewLevelCount = resource->sampledLevelCount;
             if (memo.valid && memo.samplerLifetimeId == samplerLifetimeId && memo.samplerVersion == samplerVersion &&
                 memo.textureLifetimeId == textureLifetimeId && memo.textureParamsVersion == textureParamsVersion &&
-                memo.forceNearestFiltering == forceNearestFiltering && memo.viewLevelCount == viewLevelCount) {
+                memo.forceNearestFiltering == forceNearestFiltering) {
                 resolvedSampler = memo.sampler;
             } else {
-                resolvedSampler = m_samplerManager->GetOrCreateSampler(*samplerToUse, *texture,
-                                                                       forceNearestFiltering, viewLevelCount);
+                resolvedSampler =
+                    m_samplerManager->GetOrCreateSampler(*samplerToUse, *texture, forceNearestFiltering);
                 memo.samplerLifetimeId = samplerLifetimeId;
                 memo.samplerVersion = samplerVersion;
                 memo.textureLifetimeId = textureLifetimeId;
                 memo.textureParamsVersion = textureParamsVersion;
                 memo.forceNearestFiltering = forceNearestFiltering;
-                memo.viewLevelCount = viewLevelCount;
                 memo.sampler = resolvedSampler;
                 memo.valid = true;
             }
         } else {
-            resolvedSampler = m_samplerManager->GetOrCreateSampler(*samplerToUse, *texture, forceNearestFiltering,
-                                                                   resource->sampledLevelCount);
+            resolvedSampler =
+                m_samplerManager->GetOrCreateSampler(*samplerToUse, *texture, forceNearestFiltering);
         }
         outImageInfo = {
             .sampler = resolvedSampler,
@@ -460,48 +408,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         return outImageInfo.sampler != VK_NULL_HANDLE;
     }
 
-    Bool UniformManager::ProgramSamplesOnlySingleLevelTextures(
-        const MG_State::GLState::ProgramObject& program, const ProgramFactory::VkProgramObject& programObj) {
-        Bool sawSampler = false;
-        for (Uint32 binding = 0; binding < programObj.bindingKinds.size(); ++binding) {
-            if (programObj.bindingKinds[binding] != ProgramFactory::DescriptorBindingKind::CombinedImageSampler) {
-                continue;
-            }
-            const auto* texture = ResolveSamplerTextureRaw(program, programObj, binding);
-            if (texture == nullptr) return false;
-            const auto& levelRange = texture->GetLevelRange();
-            if (levelRange.x() != levelRange.y()) return false;
-
-            // An explicit-LOD sample is a single filtered tap, so it also gives up anisotropic
-            // filtering - which a single-level view can still have. Resolve the sampler exactly
-            // the way ResolveSamplerDescriptor does and bail if anisotropy would apply.
-            const Int location = programObj.samplerUniformLocationByBinding[binding];
-            const Int unit = ResolveSamplerUnitIndex(program, location, binding);
-            const auto& samplerOverride = MG_State::pGLContext->GetTextureUnitObject(unit).GetSamplerObject();
-            const auto* effectiveSampler =
-                samplerOverride ? samplerOverride.get() : texture->GetSamplerObject().get();
-            if (effectiveSampler == nullptr) return false;
-            if (effectiveSampler->GetMaxAnisotropy() > 1.0f &&
-                effectiveSampler->GetMinFilter() == SamplerFilterMode::Linear &&
-                effectiveSampler->GetMagFilter() == SamplerFilterMode::Linear) {
-                return false;
-            }
-
-            // An explicit LOD 0 makes lambda exactly 0, which is the magnification side of the
-            // min/mag decision. That only matches the implicit form when lambda could not have been
-            // positive anyway (the LOD clamp already pins it at or below 0), or when the two
-            // filters are the same and the choice cannot be observed.
-            const Float effectiveMaxLod = effectiveSampler->GetMipmapMode() == SamplerMipmapMode::None
-                                              ? 0.0f
-                                              : effectiveSampler->GetMaxLod();
-            if (effectiveMaxLod > 0.0f && effectiveSampler->GetMinFilter() != effectiveSampler->GetMagFilter()) {
-                return false;
-            }
-            sawSampler = true;
-        }
-        return sawSampler;
-    }
-
     Bool UniformManager::ResolveSamplerTexture(const MG_State::GLState::ProgramObject& program,
                                                          const ProgramFactory::VkProgramObject& programObj, Uint32 binding,
                                                          SharedPtr<MG_State::GLState::ITextureObject>& outTexture) {
@@ -604,11 +510,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         const VkDeviceSize texelSize =
             static_cast<VkDeviceSize>(MG_Util::GetSizedInternalFormatSizeInBytes(internalFormat));
-        // glTextureBufferRange addresses a window of the buffer, not all of it; the whole-buffer
-        // forms report the buffer's current size here, so both go through the same clamp.
-        const VkDeviceSize rangeOffset = static_cast<VkDeviceSize>(textureBuffer->GetBufferRangeOffset());
-        const VkDeviceSize rangeSize = static_cast<VkDeviceSize>(textureBuffer->GetBufferRangeSizeInBytes());
-        VkDeviceSize viewRange = std::min(rangeSize, slice.size > rangeOffset ? slice.size - rangeOffset : 0);
+        VkDeviceSize viewRange = slice.size;
         if (texelSize > 0) {
             viewRange = (viewRange / texelSize) * texelSize;
         }
@@ -621,7 +523,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         viewInfo.sType = VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO;
         viewInfo.buffer = slice.buffer;
         viewInfo.format = vkFormat;
-        viewInfo.offset = slice.offset + rangeOffset;
+        viewInfo.offset = slice.offset;
         viewInfo.range = viewRange;
 
         VkBufferView bufferView = VK_NULL_HANDLE;
@@ -666,14 +568,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return false;
         }
 
-        // The shader may write this buffer, and those writes land in GPU memory behind the
-        // frontend's CPU shadow - which is what MapBuffer and GetBufferSubData read.
-        // Host-visible coherent GPU residency makes the shadow BE that memory, so the
-        // results are visible without a readback path, exactly as for a capture buffer.
-        bufferObject->EnsureGpuResidentStorage();
-        // ... and the read that follows has to wait for this draw or dispatch to retire.
-        bufferObject->MarkGpuWritten();
-
         BufferSlice slice{};
         if (!m_bufferManager->AcquireResidentSlice(BufferKind::ShaderStorage, bufferObject, slice) || !slice.IsValid()) {
             MGLOG_E("ResolveStorageBufferDescriptor: failed to sync GL buffer %u for block '%s'",
@@ -776,27 +670,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 
     SharedPtr<MG_State::GLState::ITextureObject> UniformManager::GetFallbackTexture(TextureTarget target) const {
-        // The fallback is a single-sampled 2D image, so it can only stand in for a sampler that
-        // would accept one. A multisample sampler in particular cannot: its descriptor demands a
-        // multisample view, and handing it this one is invalid Vulkan, not a degraded picture.
-        // Report that there is no fallback and let the caller decline the draw - aborting the
-        // process over an unbound sampler is never the right answer.
-        if (target != TextureTarget::Texture2D && target != TextureTarget::TextureRectangle) {
-            MGLOG_E("UniformManager::GetFallbackTexture: no fallback exists for target=%d",
-                    static_cast<Int>(target));
-            return nullptr;
-        }
+        MOBILEGL_ASSERT(target == TextureTarget::Texture2D || target == TextureTarget::TextureRectangle,
+                        "UniformManager::GetFallbackTexture: unsupported fallback target=%d",
+                        static_cast<Int>(target));
 
         if (m_fallbackTexture2D == nullptr) {
             auto fallbackTexture = MakeShared<MG_State::GLState::TextureObject2D>(kFallbackTexture2DExternalIndex);
             fallbackTexture->SetInternalFormat(TextureInternalFormat::RGBA8);
             fallbackTexture->AllocateStorage(TextureUploadTarget::Texture2D, 0,
                                              {.texelSize = {1, 1, 1}, .byteSize = 4});
-            // (0, 0, 0, 1): what GL reads from a texture that is not complete, and the only
-            // sensible answer for a sampler with nothing bound.
-            static Uint8 kOpaqueBlackTexel[4] = {0, 0, 0, 255};
-            fallbackTexture->UpdateMipmapSubData(TextureUploadTarget::Texture2D, 0,
-                                                 {kOpaqueBlackTexel, sizeof(kOpaqueBlackTexel)});
             fallbackTexture->MarkStorageDirty(TextureUploadTarget::Texture2D, 0, true);
             m_fallbackTexture2D = fallbackTexture;
         }
@@ -1008,17 +890,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return false;
         }
 
-        // Sized from what a real program declares, not from the 256-binding cap. A GL program's
-        // single descriptor set holds the bindings shader reflection found - typically 2 to 8 - so
-        // scaling by m_maxBindings declared 5 x 64 x 256 = 81,920 descriptors per pool and 245,760
-        // across the three frames in flight, which drivers that reserve backing store proportional
-        // to the declared count pay for at init. An outlier program is absorbed by the existing
-        // VK_ERROR_OUT_OF_POOL_MEMORY -> GrowFrameDescriptorPool path: pool sizes are aggregate
-        // budgets rather than per-set limits, and vkAllocateDescriptorSets is spec-required to
-        // report that error rather than fail hard.
-        static constexpr Uint32 kEstimatedBindingsPerSet = 8;
-        const Uint64 descriptorCount64 =
-            static_cast<Uint64>(maxSets) * static_cast<Uint64>(std::min(m_maxBindings, kEstimatedBindingsPerSet));
+        const Uint64 descriptorCount64 = static_cast<Uint64>(maxSets) * static_cast<Uint64>(m_maxBindings);
         if (descriptorCount64 > static_cast<Uint64>(std::numeric_limits<Uint32>::max())) {
             MGLOG_E("UniformDescriptorBinder::CreateDescriptorPool failed: descriptorCount overflow");
             return false;
@@ -1039,11 +911,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         VkDescriptorPoolCreateInfo poolInfo{};
         poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
-        // FREE_DESCRIPTOR_SET_BIT lets a destroyed layout's cached sets be freed back
-        // (OnDescriptorSetLayoutDestroyed) so program churn recycles pool capacity.
-        // The cost is on set allocation only, which happens when a layout's per-frame
-        // cache grows - never on the per-draw reuse path.
-        poolInfo.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
         poolInfo.maxSets = maxSets;
         poolInfo.poolSizeCount = static_cast<Uint32>(std::size(poolSizes));
         poolInfo.pPoolSizes = poolSizes;
@@ -1123,7 +990,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         auto& frame = m_frames[frameIndex];
         auto& cache = frame.descriptorSetCacheByLayout[programObj.descriptorSetLayout];
         if (cache.cursor < cache.sets.size()) {
-            outDescriptorSet = cache.sets[cache.cursor++].set;
+            outDescriptorSet = cache.sets[cache.cursor++];
         } else {
             VkResult allocResult = AllocateDescriptorSetsFromActivePool(frameIndex, programObj, outDescriptorSet);
             if (allocResult == VK_ERROR_OUT_OF_POOL_MEMORY || allocResult == VK_ERROR_FRAGMENTED_POOL) {
@@ -1137,9 +1004,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 return allocResult;
             }
 
-            // The successful allocation came from the bucket the alloc helper left
-            // active; record it so a layout-destroyed purge can free the set back.
-            cache.sets.push_back({outDescriptorSet, frame.descriptorPools[frame.activeDescriptorPoolIndex].handle});
+            cache.sets.push_back(outDescriptorSet);
             ++cache.cursor;
             MGLOG_D("UniformDescriptorBinder: cached descriptor set count for frame=%u grew to %zu", frameIndex,
                     cache.sets.size());
@@ -1197,13 +1062,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         texelBufferViews.reserve(m_maxBindings);
         dynamicOffsets.reserve(programObj.dynamicBindings.size() + uboArrayExtra);
 
-        // Iterate only the bindings this program declares. The old walk covered all 256 slots of
-        // bindingKinds on every draw to find the 1-8 a real program uses.
-        for (const Uint32 binding : programObj.activeBindings) {
-            if (binding >= m_maxBindings) {
-                break; // ascending, so nothing past the cap can follow
-            }
+        const Uint32 bindingCount =
+            std::min<Uint32>(m_maxBindings, static_cast<Uint32>(programObj.bindingKinds.size()));
+        for (Uint32 binding = 0; binding < bindingCount; ++binding) {
             const auto kind = programObj.bindingKinds[binding];
+            if (kind == ProgramFactory::DescriptorBindingKind::None) {
+                continue;
+            }
 
             VkWriteDescriptorSet write{};
             write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
@@ -1237,47 +1102,16 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                         bufferInfo.range = ubo.range;
                         dynOffset = static_cast<Uint32>(ubo.dynamicOffset);
                     } else {
-                        // Global-UBO slice reuse (see GlobalUboSliceMemo): unchanged
-                        // uniform bytes re-use the slice already uploaded this frame.
-                        const Bool isGlobalUbo =
-                            programObj.globalUboBinding == static_cast<Int>(binding) && element == 0;
-                        const Uint64 uboFrameSerial = m_bufferManager->GetFrameSerial();
-                        const Uint64 uboProgramLifetimeId = program.GetLifetimeId();
-                        const Uint32 uboContentVersion = program.GetUBOContentVersion();
-                        Bool reusedSlice = false;
-                        if (isGlobalUbo) {
-                            for (const auto& memo : m_globalUboMemo) {
-                                if (memo.buffer != VK_NULL_HANDLE &&
-                                    memo.programLifetimeId == uboProgramLifetimeId &&
-                                    memo.frameSerial == uboFrameSerial &&
-                                    memo.uboContentVersion == uboContentVersion &&
-                                    memo.range == static_cast<VkDeviceSize>(ubo.payloadSize)) {
-                                    bufferInfo.buffer = memo.buffer;
-                                    bufferInfo.range = memo.range;
-                                    dynOffset = static_cast<Uint32>(memo.offset);
-                                    reusedSlice = true;
-                                    break;
-                                }
-                            }
-                        }
-                        if (!reusedSlice) {
-                            BufferSlice slice{};
-                            if (!m_bufferManager->UploadTransient(BufferKind::Uniform, frameIndex, ubo.payload,
-                                                                  ubo.payloadSize, m_minDynamicOffsetAlignment, slice)) {
-                                MOBILEGL_ASSERT(false, "UniformDescriptorBinder::BindProgramUniformBuffers failed: UBO upload failed on binding %u element %u",
-                                        binding, element);
-                                return false;
-                            }
-                            bufferInfo.buffer = slice.buffer;
-                            bufferInfo.range = ubo.payloadSize;
-                            dynOffset = static_cast<Uint32>(slice.offset);
-                            if (isGlobalUbo) {
-                                m_globalUboMemo[m_globalUboMemoNext] = GlobalUboSliceMemo{
-                                    uboProgramLifetimeId, uboFrameSerial, uboContentVersion,
-                                    slice.buffer, slice.offset, static_cast<VkDeviceSize>(ubo.payloadSize)};
-                                m_globalUboMemoNext = (m_globalUboMemoNext + 1) % kGlobalUboMemoSize;
-                            }
+                        BufferSlice slice{};
+                        if (!m_bufferManager->UploadTransient(BufferKind::Uniform, frameIndex, ubo.payload,
+                                                              ubo.payloadSize, m_minDynamicOffsetAlignment, slice)) {
+                            MOBILEGL_ASSERT(false, "UniformDescriptorBinder::BindProgramUniformBuffers failed: UBO upload failed on binding %u element %u",
+                                    binding, element);
+                            return false;
                         }
+                        bufferInfo.buffer = slice.buffer;
+                        bufferInfo.range = ubo.payloadSize;
+                        dynOffset = static_cast<Uint32>(slice.offset);
                     }
                     bufferInfos.push_back(bufferInfo);
                     // Dynamic offsets are consumed in binding order, then array element order,
@@ -1416,34 +1250,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             m_hasLastDescriptor = cacheable;
         }
 
-        // Skip the driver call when this exact binding is already live on the
-        // command buffer (see the bind-dedup shadow in the header).
-        const Uint32 offsetCount = static_cast<Uint32>(dynamicOffsets.size());
-        Bool identicalBind = m_lastBindValid && m_lastBindSet == descriptorSet &&
-                             m_lastBindLayout == programObj.pipelineLayout && m_lastBindPoint == bindPoint &&
-                             m_lastBindOffsetCount == offsetCount && offsetCount <= kMaxShadowedDynamicOffsets;
-        if (identicalBind) {
-            for (Uint32 i = 0; i < offsetCount; ++i) {
-                if (m_lastBindOffsets[i] != dynamicOffsets[i]) {
-                    identicalBind = false;
-                    break;
-                }
-            }
-        }
-        if (!identicalBind) {
-            vkCmdBindDescriptorSets(commandBuffer, bindPoint, programObj.pipelineLayout, 0, 1,
-                                    &descriptorSet, offsetCount, dynamicOffsets.data());
-            if (offsetCount <= kMaxShadowedDynamicOffsets) {
-                m_lastBindValid = true;
-                m_lastBindSet = descriptorSet;
-                m_lastBindLayout = programObj.pipelineLayout;
-                m_lastBindPoint = bindPoint;
-                m_lastBindOffsetCount = offsetCount;
-                std::copy_n(dynamicOffsets.data(), offsetCount, m_lastBindOffsets);
-            } else {
-                m_lastBindValid = false;
-            }
-        }
+        vkCmdBindDescriptorSets(commandBuffer, bindPoint, programObj.pipelineLayout, 0, 1,
+                                &descriptorSet, static_cast<Uint32>(dynamicOffsets.size()), dynamicOffsets.data());
         return true;
     }
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/UniformManager.h

@@ -39,20 +39,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void Shutdown();
 
         void BeginFrame(Uint32 frameIndex);
-        // A command buffer (re)began recording: descriptor bindings recorded into
-        // the previous buffer do not carry over, so drop the bind-dedup shadow.
-        void OnCommandBufferBoundary() { m_lastBindValid = false; }
-        // A ProgramFactory eviction just destroyed this layout: purge every frame
-        // slot's cached descriptor sets for it, so a recycled handle value can never
-        // stale-hit sets written for the dead layout's bindings. The sets are
-        // vkFreeDescriptorSets'd back to their pools (created with
-        // FREE_DESCRIPTOR_SET_BIT) and the pool accounting is credited, so program
-        // churn recycles pool capacity instead of abandoning it. GPU-safe: the layout
-        // only dies after >1024 idle frame boundaries, so no in-flight command buffer
-        // references its sets. This is the only eviction path for the per-layout
-        // caches - a live layout's entry must never be purged (its sets would be
-        // unreachable pool slots), so there is deliberately no age-based sweep here.
-        void OnDescriptorSetLayoutDestroyed(VkDescriptorSetLayout descriptorSetLayout);
         Bool CollectSampledTextures(const MG_State::GLState::ProgramObject& program,
                                     const ProgramFactory::VkProgramObject& programObj,
                                     Vector<MG_State::GLState::ITextureObject*>& outTextures);
@@ -72,16 +58,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         static VkFormat ResolveStorageImageViewFormat(VkFormat reflectedFormat, GLenum bindingFormat,
                                                       VkFormat resourceFormat, Bool useBindingFormat);
 
-        // True when the program reads at least one sampler and every one of them is bound to a
-        // texture whose GL level range is a single level. Such a sampler resolves to
-        // minLod = maxLod = 0 (see VkSamplerManager::GetOrCreateSampler), so an implicit-LOD sample
-        // and an explicit LOD 0 sample must read the same texel - which is what makes the
-        // ExplicitLod0Sampling SPIR-V rewrite safe to request. Deliberately conservative: it reads
-        // only GL state, so a texture that ends up single-level for another reason (one uploaded
-        // level under a wide level range) merely misses the rewrite.
-        static Bool ProgramSamplesOnlySingleLevelTextures(const MG_State::GLState::ProgramObject& program,
-                                                          const ProgramFactory::VkProgramObject& programObj);
-
     private:
         struct DescriptorPoolBucket {
             VkDescriptorPool handle = VK_NULL_HANDLE;
@@ -89,16 +65,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             Uint32 allocatedSets = 0;
         };
 
-        // A cached descriptor set together with the pool it was allocated from, so a
-        // layout-destroyed purge can vkFreeDescriptorSets it back and credit the
-        // owning bucket's accounting.
-        struct CachedDescriptorSet {
-            VkDescriptorSet set = VK_NULL_HANDLE;
-            VkDescriptorPool pool = VK_NULL_HANDLE;
-        };
-
         struct DescriptorSetCacheEntry {
-            Vector<CachedDescriptorSet> sets;
+            Vector<VkDescriptorSet> sets;
             Uint32 cursor = 0;
         };
 
@@ -188,35 +156,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Uint64 m_lastDescriptorSignature = 0;
         Bool m_hasLastDescriptor = false;
 
-        // vkCmdBindDescriptorSets dedup: consecutive draws with a static uniform
-        // block resolve to the same set AND the same dynamic offsets, so the
-        // driver call can be skipped outright. Command-buffer-scope state; reset
-        // via OnCommandBufferBoundary whenever a recording (re)begins. Keyed on
-        // layout+bind point, so a pipeline-layout switch always rebinds.
-        static constexpr Uint32 kMaxShadowedDynamicOffsets = 8;
-        Bool m_lastBindValid = false;
-        VkDescriptorSet m_lastBindSet = VK_NULL_HANDLE;
-        VkPipelineLayout m_lastBindLayout = VK_NULL_HANDLE;
-        VkPipelineBindPoint m_lastBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
-        Uint32 m_lastBindOffsetCount = 0;
-        Uint32 m_lastBindOffsets[kMaxShadowedDynamicOffsets] = {};
-
-        // Global-UBO transient-slice reuse: MC leaves the default uniform block
-        // untouched across long GUI/terrain runs, so the per-draw re-upload of
-        // the same bytes can reuse the slice uploaded earlier THIS frame (frame
-        // serial guards arena recycling; the content version guards writes).
-        struct GlobalUboSliceMemo {
-            Uint64 programLifetimeId = 0;
-            Uint64 frameSerial = 0;
-            Uint32 uboContentVersion = 0;
-            VkBuffer buffer = VK_NULL_HANDLE;
-            VkDeviceSize offset = 0;
-            VkDeviceSize range = 0;
-        };
-        static constexpr Uint32 kGlobalUboMemoSize = 4;
-        GlobalUboSliceMemo m_globalUboMemo[kGlobalUboMemoSize];
-        Uint32 m_globalUboMemoNext = 0;
-
         // Per-binding fast path over VkSamplerManager's content-hashed sampler cache, which
         // stays the source of truth: its key hashes all sampler+texture state, so two distinct
         // sampler objects with identical state still resolve to one VkSampler. This memo only
@@ -233,7 +172,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             Uint64 samplerLifetimeId = 0;
             Uint64 textureLifetimeId = 0;
             VkSampler sampler = VK_NULL_HANDLE;
-            Uint32 viewLevelCount = 0;
             Uint16 samplerVersion = 0;
             Uint16 textureParamsVersion = 0;
             Bool forceNearestFiltering = false;

MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateFactory.cpp

@@ -29,17 +29,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             XXHASH_VERIFY(XXH64_update(m_hashState, &attr.Stride, sizeof(attr.Stride)));
             XXHASH_VERIFY(XXH64_update(m_hashState, &attr.Offset, sizeof(attr.Offset)));
             XXHASH_VERIFY(XXH64_update(m_hashState, &attr.IsInteger, sizeof(attr.IsInteger)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &attr.IsLong, sizeof(attr.IsLong)));
             XXHASH_VERIFY(XXH64_update(m_hashState, &attr.IsBgra, sizeof(attr.IsBgra)));
             XXHASH_VERIFY(XXH64_update(m_hashState, &attr.Divisor, sizeof(attr.Divisor)));
 
-            // The buffer's heap address is an identity component of the key: a freed
-            // buffer's reused address can alias an old cache entry, but only under a
-            // byte-identical attribute layout - and the entry payload is a pure function
-            // of the hashed inputs, with the draw path re-resolving bindingBufferKeys
-            // against the live VAO attribute pointers, so an aliased hit returns exactly
-            // what a rebuild would. Address drift only grows the map; the OnFrameBoundary
-            // aging sweep bounds that.
             const SizeT bufferKey = reinterpret_cast<SizeT>(attr.Buffer.get());
             XXHASH_VERIFY(XXH64_update(m_hashState, &bufferKey, sizeof(bufferKey)));
         }
@@ -59,27 +51,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     const VertexInputStateFactory::BackendVertexInputState& VertexInputStateFactory::GetOrCreateVertexInputState(
         const MG_State::GLState::VertexArrayObject& vao) {
-        // Per-draw fast path: the VAO carries a pointer to its resolved entry,
-        // valid while its config version and the cache's eviction epoch both
-        // match - no re-hash, no map lookup.
-        const void* memoState = nullptr;
-        Uint64 memoEpoch = 0;
-        if (vao.GetBackendStateMemo(memoState, memoEpoch) && memoEpoch == m_evictionEpoch) {
-            const auto* entry = static_cast<const BackendVertexInputState*>(memoState);
-            entry->lastUsedFrameBoundary = m_frameBoundaryCounter;
-            return *entry;
-        }
-        const BackendVertexInputState& entry = GetOrCreateVertexInputState(vao, GetOrComputeHash(vao));
-        vao.SetBackendStateMemo(&entry, m_evictionEpoch);
-        return entry;
+        return GetOrCreateVertexInputState(vao, GetOrComputeHash(vao));
     }
 
     const VertexInputStateFactory::BackendVertexInputState& VertexInputStateFactory::GetOrCreateVertexInputState(
         const MG_State::GLState::VertexArrayObject& vao, HashType hash) {
         auto it = m_cache.find(hash);
         if (it != m_cache.end()) {
-            it->second->lastUsedFrameBoundary = m_frameBoundaryCounter;
-            return *it->second;
+            return it->second;
         }
 
         VertexInputStateBuilder builder;
@@ -88,7 +67,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Vector<Uint32> bindingAttributeLocations;
         Vector<Bool> bindingUsesClientMemory;
         Vector<VertexStreamConversion> bindingConversions;
-        Vector<VkVertexInputBindingDivisorDescriptionEXT> bindingDivisors;
         Uint32 unsupportedAttribMask = 0;
 
         for (Uint32 location = 0; location < MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS; ++location) {
@@ -98,7 +76,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             }
 
             const VkFormat sourceVkFormat =
-                ToVkVertexFormat(attr.Type, attr.Size, attr.Normalized, attr.IsInteger, attr.IsBgra, attr.IsLong);
+                ToVkVertexFormat(attr.Type, attr.Size, attr.Normalized, attr.IsInteger, attr.IsBgra);
             if (sourceVkFormat == VK_FORMAT_UNDEFINED) {
                 MGLOG_E("Unsupported vertex attribute layout (location=%u, type=%s, size=%d): the array is "
                         "enabled but cannot be mapped to a VkFormat",
@@ -182,51 +160,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             bindingConversions.push_back(conversion);
             builder.AddBinding(binding, stride, inputRate);
             builder.AddAttribute(location, binding, vkFormat, 0);
-            // Divisor 1 is what VK_VERTEX_INPUT_RATE_INSTANCE already means; only anything
-            // else needs the extension to say it.
-            if (inputRate == VK_VERTEX_INPUT_RATE_INSTANCE && attr.Divisor != 1) {
-                bindingDivisors.push_back({binding, static_cast<Uint32>(attr.Divisor)});
-            }
         }
 
         const auto& state = builder.Build();
 
-        auto& slot = m_cache[hash];
-        if (!slot) {
-            slot = MakeUnique<BackendVertexInputState>();
-        }
-        BackendVertexInputState& entry = *slot;
+        auto& entry = m_cache[hash];
         entry.hash = hash;
-        entry.lastUsedFrameBoundary = m_frameBoundaryCounter;
-        entry.bindingDivisors = Move(bindingDivisors);
         entry.bindings = builder.GetBindings();
         entry.attributes = builder.GetAttributes();
-        // See the layoutHash declaration: hash only the resolved layout, never
-        // buffer identities, so identical layouts across VAOs/buffers agree.
-        XXHASH_VERIFY(XXH64_reset(m_hashState, 0));
-        for (const auto& binding : entry.bindings) {
-            XXHASH_VERIFY(XXH64_update(m_hashState, &binding.binding, sizeof(binding.binding)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &binding.stride, sizeof(binding.stride)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &binding.inputRate, sizeof(binding.inputRate)));
-        }
-        for (const auto& attribute : entry.attributes) {
-            XXHASH_VERIFY(XXH64_update(m_hashState, &attribute.location, sizeof(attribute.location)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &attribute.binding, sizeof(attribute.binding)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &attribute.format, sizeof(attribute.format)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &attribute.offset, sizeof(attribute.offset)));
-        }
-        for (const auto& divisor : entry.bindingDivisors) {
-            XXHASH_VERIFY(XXH64_update(m_hashState, &divisor.binding, sizeof(divisor.binding)));
-            XXHASH_VERIFY(XXH64_update(m_hashState, &divisor.divisor, sizeof(divisor.divisor)));
-        }
-        XXHASH_VERIFY(XXH64_update(m_hashState, &unsupportedAttribMask, sizeof(unsupportedAttribMask)));
-        entry.layoutHash = XXH64_digest(m_hashState);
-        entry.attributeLocationMask = 0;
-        for (const auto& attribute : entry.attributes) {
-            if (attribute.location < 32u) {
-                entry.attributeLocationMask |= (1u << attribute.location);
-            }
-        }
         entry.bindingBufferKeys = std::move(bindingBufferKeys);
         entry.bindingBaseOffsets = std::move(bindingBaseOffsets);
         entry.bindingAttributeLocations = std::move(bindingAttributeLocations);
@@ -236,45 +177,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         entry.state = state;
         entry.state.pVertexBindingDescriptions = entry.bindings.empty() ? nullptr : entry.bindings.data();
         entry.state.pVertexAttributeDescriptions = entry.attributes.empty() ? nullptr : entry.attributes.data();
-        if (!entry.bindingDivisors.empty()) {
-            entry.divisorState.vertexBindingDivisorCount = static_cast<Uint32>(entry.bindingDivisors.size());
-            entry.divisorState.pVertexBindingDivisors = entry.bindingDivisors.data();
-            entry.state.pNext = &entry.divisorState;
-        } else {
-            entry.state.pNext = nullptr;
-        }
         return entry;
     }
 
-    void VertexInputStateFactory::OnFrameBoundary() {
-        ++m_frameBoundaryCounter;
-
-        // Sweep occasionally; evict entries whose last hit is far in the past.
-        // Erasure happens only here, never mid-frame: the draw path holds a
-        // reference into the current entry across its setup, and unordered_map
-        // erase would invalidate it. Entries are CPU-side only, so no GPU-idle
-        // proof is needed; an evicted entry that is used again is simply rebuilt
-        // from the VAO state (same hash, same content).
-        constexpr Uint64 kSweepInterval = 256;
-        constexpr Uint64 kRetireAgeBoundaries = 1024;
-        if ((m_frameBoundaryCounter % kSweepInterval) != 0) {
-            return;
-        }
-
-        for (auto it = m_cache.begin(); it != m_cache.end();) {
-            if (m_frameBoundaryCounter - it->second->lastUsedFrameBoundary > kRetireAgeBoundaries) {
-                it = m_cache.erase(it);
-                // Invalidate every VAO's state-pointer memo: the erased node's
-                // address may be reused by a future insert.
-                ++m_evictionEpoch;
-            } else {
-                ++it;
-            }
-        }
-    }
-
     VkFormat VertexInputStateFactory::ToVkVertexFormat(DataType type, Int size, Bool normalized, Bool isInteger,
-                                                       Bool isBgra, Bool isLong) {
+                                                       Bool isBgra) {
         if (isBgra) {
             // GL_BGRA: four reversed-order components, always normalized (enforced at validation), only
             // legal with GL_UNSIGNED_BYTE or a 2_10_10_10 type. The reversed VkFormats put the
@@ -299,22 +206,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         case DataType::Int2101010Rev:
             if (isInteger || size != 4) return VK_FORMAT_UNDEFINED;
             return normalized ? VK_FORMAT_A2B10G10R10_SNORM_PACK32 : VK_FORMAT_A2B10G10R10_SSCALED_PACK32;
-        case DataType::Float64:
-            // A 64-bit attribute is fetched as its 32-bit word pair and bitcast back to double in the
-            // shader (PackDoubleVertexInputsPass does the shader half). That is bit-exact and, unlike
-            // VK_FORMAT_R64*_SFLOAT, needs no format capability: lavapipe reports bufferFeatures = 0
-            // for every R64 float format, so a native 64-bit vertex fetch is simply unavailable there
-            // while shaderFloat64 is not. Both halves key off nothing but the attribute being long,
-            // so they always agree without extra plumbing.
-            if (!isLong || isInteger || normalized) return VK_FORMAT_UNDEFINED;
-            switch (size) {
-            case 1: return VK_FORMAT_R32G32_UINT;
-            case 2: return VK_FORMAT_R32G32B32A32_UINT;
-            // A dvec3/dvec4 input is 6/8 uint32 components: no single VkFormat, and GL spreads it
-            // over two attribute locations, which the location-per-VAO-index model here does not
-            // express. Declined rather than fetched wrong.
-            default: return VK_FORMAT_UNDEFINED;
-            }
         case DataType::Float32:
             switch (size) {
             case 1: return VK_FORMAT_R32_SFLOAT;

MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateFactory.h

@@ -27,18 +27,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         struct BackendVertexInputState {
             HashType hash = 0;
-            // Hash of the resolved Vulkan vertex layout only (bindings, attributes,
-            // unsupported mask) - NO buffer identities. `hash` mixes buffer heap
-            // addresses so per-chunk VBOs mint a fresh identity per buffer; keying
-            // pipelines on that minted one VkPipeline per chunk section for an
-            // identical layout, defeating pipeline reuse and the per-draw memo.
-            // Pipelines depend only on the layout, so they key on this instead.
-            HashType layoutHash = 0;
-            // Frame boundary of the last cache hit; entries idle past the
-            // OnFrameBoundary retirement age are evicted (CPU heap only).
-            // Mutable: the VAO's state-pointer memo fast path stamps it through
-            // a const entry reference.
-            mutable Uint64 lastUsedFrameBoundary = 0;
             Vector<VkVertexInputBindingDescription> bindings;
             Vector<VkVertexInputAttributeDescription> attributes;
             Vector<SizeT> bindingBufferKeys;
@@ -50,17 +38,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             // absent from `attributes`, so without this mask the draw path cannot tell them apart from
             // a genuinely disabled array and would silently feed the shader the current attribute value.
             Uint32 unsupportedAttribMask = 0;
-            // Bitmask of `attributes[i].location` - the draw path needs it up to
-            // three times per draw, so it is baked once at build time.
-            Uint32 attributeLocationMask = 0;
-            // Per-binding glVertexAttribDivisor values other than 1. Vulkan's instance input
-            // rate advances once per instance and nothing else, so anything else has to be
-            // stated through VK_EXT_vertex_attribute_divisor. Empty when every instanced
-            // binding uses divisor 1, which is what the plain input rate already means.
-            Vector<VkVertexInputBindingDivisorDescriptionEXT> bindingDivisors;
-            VkPipelineVertexInputDivisorStateCreateInfoEXT divisorState{
-                VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_DIVISOR_STATE_CREATE_INFO_EXT
-            };
             VkPipelineVertexInputStateCreateInfo state{
                 VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO
             };
@@ -78,14 +55,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         const BackendVertexInputState& GetOrCreateVertexInputState(
             const MG_State::GLState::VertexArrayObject& vao, HashType hash);
         const BackendVertexInputState& GetOrCreateVertexInputState(const MG_State::GLState::VertexArrayObject& vao);
-        // Frame boundary hook: ages the cache and evicts entries not hit for many
-        // frames. The key mixes buffer heap addresses, so buffer/VAO churn keeps
-        // minting fresh keys; without eviction the map grows for the whole session.
-        // Entries hold no Vulkan handles (pipeline creation copies the descriptions)
-        // and the draw path's entry reference never spans a frame boundary, so
-        // eviction here needs no GPU-idle proof. Self-gated: one counter bump and
-        // compare except on sweep boundaries.
-        void OnFrameBoundary();
         static SizeT GetComponentSize(DataType type);
         // Tightly-packed byte size of one vertex element for this attribute: componentSize * size for
         // normal types, and 4 (one packed word) for the 2_10_10_10 types and GL_BGRA. Returns 0 for
@@ -93,27 +62,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         static SizeT GetAttributeByteSize(DataType type, Int size, Bool isBgra);
 
     private:
-        static VkFormat ToVkVertexFormat(DataType type, Int size, Bool normalized, Bool isInteger, Bool isBgra = false,
-                                         Bool isLong = false);
+        static VkFormat ToVkVertexFormat(DataType type, Int size, Bool normalized, Bool isInteger, Bool isBgra = false);
         static Bool IsScaledIntegerVertexFormat(VkFormat format);
         static VkFormat ToFloat32VertexFormat(Int componentCount);
         Bool SupportsVertexBufferFormat(VkFormat format) const;
 
         const VulkanRendererConfig& m_config;
         VkPhysicalDevice m_physicalDevice = VK_NULL_HANDLE;
-        // Values are heap-allocated: FastSTL::unordered_map is open-addressing,
-        // so INSERT invalidates references to stored values. The draw path (and
-        // the VAOs' state-pointer memos) hold entry pointers across inserts;
-        // only the unique_ptr cell moves, never the pointee.
-        UnorderedMap<HashType, UniquePtr<BackendVertexInputState>> m_cache;
-        // Monotonic frame-boundary counter (bumped in OnFrameBoundary) for cache aging.
-        Uint64 m_frameBoundaryCounter = 0;
-        // Bumped whenever any cache entry is erased. VAOs memo a raw pointer to
-        // their heap-allocated entry (stable across map insert/rehash by
-        // construction); a memo is honored only while its recorded epoch
-        // matches, so an evicted entry can never be dereferenced through a
-        // stale memo.
-        Uint64 m_evictionEpoch = 1;
+        UnorderedMap<HashType, BackendVertexInputState> m_cache;
         static inline XXH64_state_t* m_hashState = XXH64_createState();
     };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkBufferManager.cpp

@@ -7,8 +7,6 @@
 // End of Source File Header
 
 #include "VkBufferManager.h"
-#include "../DirectVulkan.h"
-#include "VulkanRenderer.h"
 
 namespace MobileGL::MG_Backend::DirectVulkan {
     namespace {
@@ -24,10 +22,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT |
             VK_BUFFER_USAGE_INDIRECT_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT |
             VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
-        // Appended to kPersistentBackedUsage when VK_EXT_transform_feedback is enabled
-        // (see VkBufferManagerInitInfo::transformFeedbackUsageEnabled).
-        constexpr VkBufferUsageFlags kTransformFeedbackUsage =
-            VK_BUFFER_USAGE_TRANSFORM_FEEDBACK_BUFFER_BIT_EXT;
         // The app writes into the persistent map with no explicit flush, so its memory must
         // be host-coherent (Adreno host-visible memory is; requiring it keeps us portable).
         constexpr VkMemoryPropertyFlags kPersistentBackedRequiredFlags =
@@ -59,18 +53,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             }
         }
 
-        // The CPU is about to read a buffer a shader wrote. Its bytes live in coherent
-        // host-visible GPU storage (EnsureGpuResidentStorage adopts it when the buffer is
-        // bound as a shader storage buffer), so nothing needs copying - but coherence only
-        // says the writes are visible once they have happened, so the work has to retire
-        // first.
-        void Ops_ReadbackFromGpu(BufferObject& bufferObject) {
-            (void)bufferObject;
-            if (pVulkanRenderer) {
-                pVulkanRenderer->FinishPendingGpuWork();
-            }
-        }
-
         void* Ops_AcquirePersistentMap(BufferObject& bufferObject) {
             if (g_activeBufferManager) {
                 return g_activeBufferManager->AcquirePersistentMap(bufferObject);
@@ -94,7 +76,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             .FlushMappedRange = Ops_FlushMappedRange,
             .OnDestroy = Ops_OnDestroy,
             .AcquirePersistentMap = Ops_AcquirePersistentMap,
-            .ReadbackFromGpu = Ops_ReadbackFromGpu,
         };
     } // namespace
 
@@ -160,15 +141,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_transientUploadArena.BeginFrame(frameIndex);
     }
 
-    void VkBufferManager::CollectAllDeferredReleases() {
-        for (Uint32 frameIndex = 0; frameIndex < m_deferredBufferReleases.size(); ++frameIndex) {
-            CollectDeferredReleases(frameIndex);
-        }
-        for (Uint32 frameIndex = 0; frameIndex < m_transientUploadArena.GetFrameCount(); ++frameIndex) {
-            m_transientUploadArena.CollectDeferredReleases(frameIndex);
-        }
-    }
-
     void VkBufferManager::NotifyDeviceIdle() {
         // Everything submitted so far has completed. Work recorded for the
         // current frame has not been submitted yet, so the current serial
@@ -242,15 +214,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 
     void VkBufferManager::TrackLiveResource(const SharedPtr<VkBufferResource>& resource) {
-        // Sweep on a doubling watermark rather than on every insert past the threshold. The old
-        // form walked the whole vector for each new buffer once the list passed 256, and when the
-        // buffers are all live the walk removes nothing and the list grows by one - so creating N
-        // live buffers cost ~N^2/2 expired() checks. Reclamation semantics are unchanged: the sweep
-        // still removes exactly the expired entries, just less often and with the same bound on how
-        // much dead weight can accumulate (at most as many entries as were live at the last sweep).
-        if (m_liveResources.size() >= std::max<SizeT>(kLiveResourcePruneThreshold, 2 * m_liveResourcesLastPruned)) {
+        if (m_liveResources.size() >= kLiveResourcePruneThreshold) {
             std::erase_if(m_liveResources, [](const WeakPtr<VkBufferResource>& weak) { return weak.expired(); });
-            m_liveResourcesLastPruned = m_liveResources.size();
         }
         m_liveResources.push_back(resource);
     }
@@ -491,10 +456,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // it from the current shadow - MappedData() is still the shadow here because the
         // frontend adopts (and drops) the shadow only after this returns.
         DeferRelease(std::move(resource->buffer));
-        const VkBufferUsageFlags persistentUsage =
-            kPersistentBackedUsage |
-            (m_initInfo.transformFeedbackUsageEnabled ? kTransformFeedbackUsage : 0);
-        if (!CreateResidentStorage(*resource, size, persistentUsage, kPersistentBackedRequiredFlags)) {
+        if (!CreateResidentStorage(*resource, size, kPersistentBackedUsage, kPersistentBackedRequiredFlags)) {
             resource->persistentMapped = false;
             resource->storageSize = 0;
             resource->usageFlags = 0;
@@ -568,16 +530,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         auto resource = GetOrCreateResource(bufferObject);
         bufferObject->SyncPersistentMappedRange();
 
-        // A persistently mapped resource's storage IS the application's copy of the bytes -
-        // the frontend adopted it in place of the shadow and hands out pointers into it, and
-        // a shader can have written bytes the shadow never saw (a transform feedback
-        // capture). Streaming a second copy would feed this draw the stale shadow, and the
-        // downgrade below would release the storage the application still points at,
-        // breaking the "never recreated" promise AcquirePersistentMap makes.
-        if (resource->persistentMapped) {
-            return AcquireResidentSlice(kind, bufferObject, outSlice);
-        }
-
         const VkDeviceSize size = static_cast<VkDeviceSize>(bufferObject->GetSize());
         if (size == 0) {
             MGLOG_E("VkBufferManager::AcquireStreamedSlice failed: buffer size is zero");

MobileGL/MG_Backend/DirectVulkan/Renderer/VkBufferManager.h

@@ -31,9 +31,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VmaMemoryUsage transientMemoryUsage = VMA_MEMORY_USAGE_AUTO;
         VmaAllocationCreateFlags transientAllocationFlags = VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT;
         Bool transientPersistentMapping = false;
-        // VK_EXT_transform_feedback is enabled: persistent-map storage additionally
-        // carries the transform feedback usage so capture targets can bind directly.
-        Bool transformFeedbackUsageEnabled = false;
     };
 
     // The DirectVulkan storage behind one frontend buffer (pipe_resource analogue).
@@ -80,11 +77,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // Recreate all per-frame transient arenas
         Bool RecreateTransientArenas(Uint32 frameCount);
         void BeginFrame(Uint32 frameIndex);
-        // Drains every frame slot's deferred buffer/resource releases (and the
-        // transient arena's parked superseded blocks). Only valid when the
-        // caller has proven every queue submission complete; used by the
-        // present-less frame-boundary drain.
-        void CollectAllDeferredReleases();
         // All previously submitted GPU work has completed (vkDeviceWaitIdle).
         void NotifyDeviceIdle();
         // A frame slot's submission fence has been waited: every serial up to
@@ -154,8 +146,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Vector<Vector<VkBufferObject>> m_deferredBufferReleases;
         Vector<Vector<SharedPtr<VkBufferResource>>> m_deferredResourceReleases;
         Vector<WeakPtr<VkBufferResource>> m_liveResources;
-    // Size m_liveResources had just after the last sweep; the next sweep waits for it to double.
-    SizeT m_liveResourcesLastPruned = 0;
         Uint32 m_currentFrameIndex = 0;
         Uint64 m_frameSerial = 1;
         Uint64 m_completedSerialFloor = 0;

MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.cpp

@@ -8,75 +8,15 @@
 
 #include "VkClearManager.h"
 
-#include "MG_State/GLState/Core.h"
 #include "MG_Util/Converters/MGToStr/FramebufferEnumConverter.h"
 #include "MG_Util/Converters/MGToStr/TextureEnumConverter.h"
 
-#include <algorithm>
-#include <cmath>
-
 namespace MobileGL::MG_Backend::DirectVulkan {
     static Bool IsCubeMapFaceUploadTarget(TextureUploadTarget target) {
         return target >= TextureUploadTarget::CubeMapPositiveX &&
                target <= TextureUploadTarget::CubeMapNegativeZ;
     }
 
-    VkClearColorValue MakeVkClearColorValue(const ClearAttachmentPayload& payload, Bool formatLacksAlpha) {
-        VkClearColorValue clearValue{};
-        switch (payload.colorEncoding) {
-        case ClearColorEncoding::Int:
-            clearValue.int32[0] = payload.colorInt.x();
-            clearValue.int32[1] = payload.colorInt.y();
-            clearValue.int32[2] = payload.colorInt.z();
-            clearValue.int32[3] = formatLacksAlpha ? 1 : payload.colorInt.w();
-            break;
-        case ClearColorEncoding::Uint:
-            clearValue.uint32[0] = payload.colorUint.x();
-            clearValue.uint32[1] = payload.colorUint.y();
-            clearValue.uint32[2] = payload.colorUint.z();
-            clearValue.uint32[3] = formatLacksAlpha ? 1u : payload.colorUint.w();
-            break;
-        case ClearColorEncoding::Float:
-            clearValue.float32[0] = payload.color.x();
-            clearValue.float32[1] = payload.color.y();
-            clearValue.float32[2] = payload.color.z();
-            clearValue.float32[3] = formatLacksAlpha ? 1.0f : payload.color.w();
-            break;
-        }
-        return clearValue;
-    }
-
-    void PreCompensateSrgbClearColor(ClearAttachmentPayload& payload, VkFormat destinationFormat) {
-        if (payload.colorEncoding != ClearColorEncoding::Float) return;
-        // With GL_FRAMEBUFFER_SRGB enabled GL performs the encoding itself, so the driver doing it
-        // is exactly right and there is nothing to undo.
-        if (MG_State::pGLContext->IsCapabilityEnabled(MobileGL::CapabilityInput::FramebufferSrgb)) return;
-        if (ResolveSrgbAttachmentWriteFormat(destinationFormat, false) == destinationFormat) return;
-
-        // sRGB -> linear (GL 4.6 core 8.24), applied to the colour channels only: alpha is stored
-        // linearly in an sRGB format and must pass through untouched.
-        const auto toLinear = [](Float encoded) {
-            const Float value = std::clamp(encoded, 0.0f, 1.0f);
-            return value <= 0.04045f ? value / 12.92f : std::pow((value + 0.055f) / 1.055f, 2.4f);
-        };
-        payload.color = FloatVec4(toLinear(payload.color.x()), toLinear(payload.color.y()),
-                                  toLinear(payload.color.z()), payload.color.w());
-    }
-
-    void ForceOpaqueClearAlpha(ClearAttachmentPayload& payload) {
-        switch (payload.colorEncoding) {
-        case ClearColorEncoding::Int:
-            payload.colorInt = IntVec4(payload.colorInt.x(), payload.colorInt.y(), payload.colorInt.z(), 1);
-            break;
-        case ClearColorEncoding::Uint:
-            payload.colorUint = UintVec4(payload.colorUint.x(), payload.colorUint.y(), payload.colorUint.z(), 1u);
-            break;
-        case ClearColorEncoding::Float:
-            payload.color = FloatVec4(payload.color.x(), payload.color.y(), payload.color.z(), 1.0f);
-            break;
-        }
-    }
-
     static Bool PendingClearMatchesTextureIdentity(const PendingClearKey& key, const TextureIdentity& identity) {
         return key.texture == identity.texture && key.textureLifetimeId == identity.lifetimeId;
     }
@@ -153,7 +93,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         const std::lock_guard<std::mutex> lock(m_mutex);
         m_pendingClears.clear();
         m_aliveObjects.clear();
-        m_pendingCount.store(static_cast<Uint32>(m_pendingClears.size()), std::memory_order_relaxed);
     }
 
     TextureIdentity VkClearManager::MakeTextureIdentity(MG_State::GLState::ITextureObject* texture) {
@@ -188,7 +127,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             m_pendingClears.erase(key);
         }
         m_aliveObjects.erase(identity);
-        m_pendingCount.store(static_cast<Uint32>(m_pendingClears.size()), std::memory_order_relaxed);
     }
 
     Bool VkClearManager::LockTextureIdentityLocked(const TextureIdentity& identity,
@@ -283,7 +221,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_aliveObjects[MakeTextureIdentity(texture.get())] = texture;
         auto& pending = m_pendingClears[key];
         MergeClearPayload(pending, clearPayload);
-        m_pendingCount.store(static_cast<Uint32>(m_pendingClears.size()), std::memory_order_relaxed);
     }
 
     void VkClearManager::QueueClear(const ClearAttachmentPayload& clearPayload,
@@ -301,7 +238,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_aliveObjects[MakeTextureIdentity(texture.get())] = texture;
         auto& pending = m_pendingClears[key];
         MergeClearPayload(pending, clearPayload);
-        m_pendingCount.store(static_cast<Uint32>(m_pendingClears.size()), std::memory_order_relaxed);
     }
 
     Bool VkClearManager::HasPendingClear(MG_State::GLState::ITextureObject* texture) {
@@ -309,10 +245,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return false;
         }
 
-        if (m_pendingCount.load(std::memory_order_relaxed) == 0) {
-            return false;  // per-draw hot path: nothing pending anywhere
-        }
-
         const Uint64 lifetimeId = texture->GetLifetimeId();
         const std::lock_guard<std::mutex> lock(m_mutex);
         for (auto it = m_pendingClears.begin(); it != m_pendingClears.end(); ++it) {
@@ -328,9 +260,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         if (key.texture == nullptr) {
             return false;
         }
-        if (m_pendingCount.load(std::memory_order_relaxed) == 0) {
-            return false;  // per-draw hot path: nothing pending anywhere
-        }
 
         const std::lock_guard<std::mutex> lock(m_mutex);
         if (m_pendingClears.find(key) == m_pendingClears.end()) {
@@ -358,9 +287,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         if (key.texture == nullptr) {
             return false;
         }
-        if (m_pendingCount.load(std::memory_order_relaxed) == 0) {
-            return false;  // per-draw hot path: nothing pending anywhere
-        }
 
         const std::lock_guard<std::mutex> lock(m_mutex);
         if (!LockTextureLocked(key, outTexture)) {
@@ -399,9 +325,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         if (texture == nullptr) {
             return false;
         }
-        if (m_pendingCount.load(std::memory_order_relaxed) == 0) {
-            return false;  // per-draw hot path: nothing pending anywhere
-        }
 
         const Uint64 lifetimeId = texture->GetLifetimeId();
         const std::lock_guard<std::mutex> lock(m_mutex);
@@ -422,9 +345,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return;
         }
 
-        if (m_pendingCount.load(std::memory_order_relaxed) == 0) {
-            return;  // per-draw hot path: nothing pending anywhere
-        }
         const TextureIdentity identity = MakeTextureIdentity(texture);
         MGLOG_D("%s: Pop all pending clears for texture %d", __func__, texture->GetExternalIndex());
         const std::lock_guard<std::mutex> lock(m_mutex);
@@ -441,7 +361,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             auto it = m_pendingClears.find(key);
             if (it != m_pendingClears.end()) {
                 m_pendingClears.erase(it);
-            m_pendingCount.store(static_cast<Uint32>(m_pendingClears.size()), std::memory_order_relaxed);
             }
         }
 

MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.h

@@ -14,7 +14,6 @@
 #include "MG_Util/Math/VectorTypes.h"
 
 #include <Includes.h>
-#include <atomic>
 #include <unordered_map>
 
 namespace MobileGL::MG_Backend::DirectVulkan {
@@ -24,41 +23,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Uint32 stencil{};
     };
 
-    // A colour clear reaches us from one of glClear/ClearBufferfv, ClearBufferiv or
-    // ClearBufferuiv, and Vulkan reads VkClearColorValue's union according to the destination
-    // image's format rather than converting between the members - a float written where an
-    // integer format is expected is reinterpreted bit for bit, not rounded. Remember which entry
-    // point supplied the value so the member written when the clear is materialized matches.
-    enum class ClearColorEncoding : Uint8 { Float, Int, Uint };
-
     struct ClearAttachmentPayload {
         GLbitfield mask = 0;
         FloatVec4 color = FloatVec4(0.0f, 0.0f, 0.0f, 0.0f);
-        ClearColorEncoding colorEncoding = ClearColorEncoding::Float;
-        IntVec4 colorInt = IntVec4(0, 0, 0, 0);
-        UintVec4 colorUint = UintVec4(0u, 0u, 0u, 0u);
         Float depth = 1.0f;
         Uint32 stencil = 0;
     };
 
-    // Builds the clear value for `payload` in the union member its encoding calls for.
-    // `formatLacksAlpha` applies GL's rule that a format without an alpha channel reads as one,
-    // expressed in whichever type matches (GL 4.6 core 15.2.3).
-    VkClearColorValue MakeVkClearColorValue(const ClearAttachmentPayload& payload, Bool formatLacksAlpha);
-
-    // Applies that same rule in place, for the paths that have to bake it into the payload before
-    // the destination is known.
-    void ForceOpaqueClearAlpha(ClearAttachmentPayload& payload);
-
-    // vkCmdClearColorImage names the image, so the driver applies the destination format's transfer
-    // function to whatever value it is handed. Every other write path in this backend goes through
-    // the UNORM twin view while GL_FRAMEBUFFER_SRGB is off (ResolveSrgbAttachmentWriteFormat) and
-    // therefore stores the raw value GL asked for. Rewrites `payload` to the linear colour whose
-    // encoding is that raw value, so a direct image clear of an sRGB destination agrees with them.
-    // A no-op for every other format, for integer clear encodings, and when GL is doing the
-    // encoding itself.
-    void PreCompensateSrgbClearColor(ClearAttachmentPayload& payload, VkFormat destinationFormat);
-
     struct PendingClearKey {
         MG_State::GLState::ITextureObject* texture = nullptr;
         Uint64 textureLifetimeId = 0;
@@ -149,19 +120,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                SharedPtr<MG_State::GLState::ITextureObject>& outTexture);
 
         Uint8 m_gcCounter = 0;
-    public:
-        // Lock-free probe for the consecutive-draw fast path: any pending clear
-        // forces the full SetupDraw path (which materializes/consumes it).
-        Bool HasAnyPendingClears() const { return m_pendingCount.load(std::memory_order_relaxed) != 0; }
-
-    private:
         mutable std::mutex m_mutex;
-        // Lock-free mirror of m_pendingClears.size(), maintained under m_mutex
-        // by every mutation. The per-draw probes (HasPendingClear/GetPending*)
-        // read it before taking the lock: during draw batches the pending set
-        // is almost always empty, so this turns several locked map probes per
-        // draw into one relaxed load.
-        std::atomic<Uint32> m_pendingCount{0};
         std::unordered_map<PendingClearKey, ClearAttachmentPayload, PendingClearKeyHash> m_pendingClears;
         std::unordered_map<TextureIdentity, WeakPtr<MG_State::GLState::ITextureObject>, TextureIdentityHash> m_aliveObjects;
     };

MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.cpp

@@ -16,21 +16,31 @@
 
 namespace MobileGL::MG_Backend::DirectVulkan {
     static Bool TryResolveSampleCountFlagBits(Int requestedSamples, VkSampleCountFlagBits& outSampleCount) {
-        // GL promises "at least the requested samples", so a non-power-of-two
-        // request (legal in GL, e.g. 3) rounds up to the next Vulkan bit.
-        if (requestedSamples <= 1) {
+        switch (requestedSamples <= 0 ? 1 : requestedSamples) {
+        case 1:
             outSampleCount = VK_SAMPLE_COUNT_1_BIT;
             return true;
-        }
-        if (requestedSamples > 64) {
+        case 2:
+            outSampleCount = VK_SAMPLE_COUNT_2_BIT;
+            return true;
+        case 4:
+            outSampleCount = VK_SAMPLE_COUNT_4_BIT;
+            return true;
+        case 8:
+            outSampleCount = VK_SAMPLE_COUNT_8_BIT;
+            return true;
+        case 16:
+            outSampleCount = VK_SAMPLE_COUNT_16_BIT;
+            return true;
+        case 32:
+            outSampleCount = VK_SAMPLE_COUNT_32_BIT;
+            return true;
+        case 64:
+            outSampleCount = VK_SAMPLE_COUNT_64_BIT;
+            return true;
+        default:
             return false;
         }
-        Uint32 bit = 1;
-        while (bit < static_cast<Uint32>(requestedSamples)) {
-            bit <<= 1;
-        }
-        outSampleCount = static_cast<VkSampleCountFlagBits>(bit);
-        return true;
     }
 
     static VkImageAspectFlags ResolveImageAspectMaskForFormat(VkFormat format) {
@@ -50,11 +60,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
     }
 
-    static Bool ColorFormatLacksAlpha(const MG_State::GLState::ITextureObject* texture) {
-        return texture != nullptr && MG_Util::GetBaseInternalFormatComponentCount(texture->GetFormat()) == 3;
-    }
-
-    [[maybe_unused]] static Float ResolveColorClearAlpha(const MG_State::GLState::ITextureObject* texture, Float requestedAlpha) {
+    static Float ResolveColorClearAlpha(const MG_State::GLState::ITextureObject* texture, Float requestedAlpha) {
         if (texture != nullptr && MG_Util::GetBaseInternalFormatComponentCount(texture->GetFormat()) == 3) {
             return 1.0f;
         }
@@ -87,20 +93,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     static VkImageViewType ResolveAttachmentViewType(
         const MG_State::GLState::FramebufferAttachmentObject& attachment,
         const VkTextureManager::TextureResource& resource) {
-        if (attachment.IsLayered()) {
-            return resource.viewType;
-        }
-        // A non-layered attachment names ONE layer, so the view over it is a plain 2D view whatever
-        // the image's own view type is. The cube-face upload targets always meant this; a cube map
-        // array attached through glFramebufferTextureLayer means it too, and a CUBE_ARRAY view over
-        // a single layer is not a legal attachment. The CUBE arm is inert today - no frontend path
-        // produces a non-layered cube attachment without a face upload target - and is kept for
-        // symmetry with CUBE_ARRAY.
-        if (IsCubeMapFaceUploadTarget(attachment.GetTextureUploadTarget()) ||
-            resource.viewType == VK_IMAGE_VIEW_TYPE_CUBE_ARRAY || resource.viewType == VK_IMAGE_VIEW_TYPE_CUBE) {
-            return VK_IMAGE_VIEW_TYPE_2D;
-        }
-        return resource.viewType;
+        return !attachment.IsLayered() && IsCubeMapFaceUploadTarget(attachment.GetTextureUploadTarget()) ?
+            VK_IMAGE_VIEW_TYPE_2D :
+            resource.viewType;
     }
 
     static MG_State::GLState::ITextureObject* ResolveCompleteColorAttachmentTexture(
@@ -171,9 +166,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         if (view != VK_NULL_HANDLE) {
             vkDestroyImageView(device, view, nullptr);
         }
-        if (unormTwinView != VK_NULL_HANDLE) {
-            vkDestroyImageView(device, unormTwinView, nullptr);
-        }
         if (image != VK_NULL_HANDLE && allocation != nullptr) {
             vmaDestroyImage(allocator, image, allocation);
         }
@@ -181,7 +173,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         image = VK_NULL_HANDLE;
         allocation = nullptr;
         view = VK_NULL_HANDLE;
-        unormTwinView = VK_NULL_HANDLE;
         layout = VK_IMAGE_LAYOUT_UNDEFINED;
         format = VK_FORMAT_UNDEFINED;
         aspect = VK_IMAGE_ASPECT_NONE;
@@ -189,7 +180,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         sampleCount = VK_SAMPLE_COUNT_1_BIT;
         internalFormat = TextureInternalFormat::Unknown;
         samples = 0;
-        deadSinceFrame = kNeverObservedDead;
     }
 
     VkRenderPassManager::VkRenderPassManager(VkDevice device,
@@ -216,7 +206,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             resource.Destroy(m_device, m_allocator);
         }
         m_renderbufferResources.clear();
-        CollectDeferredRenderbufferReleases(/*destroyAll=*/true); // caller guarantees device idle
         m_pendingRenderbufferClears.clear();
         RenderPassEntry::s_textureResourcesScratch.clear();
         s_activeRenderPass = {};
@@ -224,80 +213,22 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_rpFastValid = false;
     }
 
-    Uint64 VkRenderPassManager::RetireAgeFrames() const {
-        // MaxFramesInFlight + 2 covers the frame ring plus one boundary for the
-        // recording-to-submit gap and one because OnPresent runs ahead of Present's
-        // fence wait; the floor of 8 keeps a margin over the default ring of 3 while
-        // still releasing multi-MB attachment memory promptly (the render-pass cache's
-        // 1024-frame retirement would pin it for no additional safety).
-        return std::max<Uint64>(8, static_cast<Uint64>(m_config.MaxFramesInFlight) + 2);
-    }
-
-    void VkRenderPassManager::DeferRenderbufferBackingRelease(RenderbufferResource& resource) {
-        // The superseded backing may still be referenced by in-flight command buffers
-        // (glRenderbufferStorage can respecify a renderbuffer drawn this very frame),
-        // so it is parked and destroyed only after RetireAgeFrames() boundaries.
-        if (resource.image == VK_NULL_HANDLE && resource.view == VK_NULL_HANDLE) {
-            return;
-        }
-        m_deferredRenderbufferReleases.push_back(
-            {resource.image, resource.allocation, resource.view, resource.unormTwinView, m_frameCounter});
-        resource.image = VK_NULL_HANDLE;
-        resource.allocation = nullptr;
-        resource.view = VK_NULL_HANDLE;
-        resource.unormTwinView = VK_NULL_HANDLE;
-    }
-
-    void VkRenderPassManager::CollectDeferredRenderbufferReleases(Bool destroyAll) {
-        if (m_deferredRenderbufferReleases.empty()) {
-            return;
-        }
-        const Uint64 retireAgeFrames = RetireAgeFrames();
-        std::erase_if(m_deferredRenderbufferReleases, [&](DeferredRenderbufferRelease& release) {
-            if (!destroyAll && m_frameCounter - release.deferredAtFrame < retireAgeFrames) {
-                return false;
-            }
-            if (release.view != VK_NULL_HANDLE) {
-                vkDestroyImageView(m_device, release.view, nullptr);
-            }
-            if (release.unormTwinView != VK_NULL_HANDLE) {
-                vkDestroyImageView(m_device, release.unormTwinView, nullptr);
-            }
-            if (release.image != VK_NULL_HANDLE) {
-                vmaDestroyImage(m_allocator, release.image, release.allocation);
-            }
-            return true;
-        });
-    }
-
     void VkRenderPassManager::CollectRenderbufferGarbage() {
-        // Two-phase reclamation: a dead renderbuffer's VkImage may still be referenced by
-        // command buffers submitted up to frames-in-flight frames ago (it was legally
-        // attached and drawn right up to its deletion), so the first observation of an
-        // expired weak reference only stamps the current frame counter; Destroy runs once
-        // enough frame boundaries have passed that the stamping frame's submission fence
-        // has provably been waited (see RetireAgeFrames).
-        const Uint64 retireAgeFrames = RetireAgeFrames();
-        for (auto it = m_renderbufferResources.begin(); it != m_renderbufferResources.end();) {
-            auto& resource = it->second;
+        Vector<MG_State::GLState::RenderbufferObject*> deadRenderbuffers;
+        deadRenderbuffers.reserve(m_renderbufferResources.size());
+        for (auto& [renderbuffer, resource] : m_renderbufferResources) {
             const auto liveRenderbuffer = resource.renderbuffer.lock();
-            if (liveRenderbuffer && liveRenderbuffer.get() == it->first) {
-                resource.deadSinceFrame = RenderbufferResource::kNeverObservedDead;
-                ++it;
-                continue;
+            if (!liveRenderbuffer || liveRenderbuffer.get() != renderbuffer) {
+                deadRenderbuffers.emplace_back(renderbuffer);
             }
-            if (resource.deadSinceFrame == RenderbufferResource::kNeverObservedDead) {
-                resource.deadSinceFrame = m_frameCounter;
-                ++it;
-                continue;
+        }
+        for (auto* renderbuffer : deadRenderbuffers) {
+            auto resourceIt = m_renderbufferResources.find(renderbuffer);
+            if (resourceIt != m_renderbufferResources.end()) {
+                resourceIt->second.Destroy(m_device, m_allocator);
+                m_renderbufferResources.erase(resourceIt);
             }
-            if (m_frameCounter - resource.deadSinceFrame < retireAgeFrames) {
-                ++it;
-                continue;
-            }
-            m_pendingRenderbufferClears.erase(it->first);
-            resource.Destroy(m_device, m_allocator);
-            it = m_renderbufferResources.erase(it);
+            m_pendingRenderbufferClears.erase(renderbuffer);
         }
     }
 
@@ -318,47 +249,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
 
         const auto internalFormat = renderbuffer->GetInternalFormat();
-        // Three-channel color formats widen to their RGBA twin exactly like textures do
-        // (VkTextureManager::ResolveTextureFormatInfo): blits/resolves between a
-        // renderbuffer and a texture of the same GL format then see one VkFormat.
-        const VkFormat format = [&]() -> VkFormat {
-            switch (internalFormat) {
-            case TextureInternalFormat::RGB:
-            case TextureInternalFormat::RGB8:
-            case TextureInternalFormat::R3G3B2:
-            case TextureInternalFormat::RGB4:
-            case TextureInternalFormat::RGB5:
-                return VK_FORMAT_R8G8B8A8_UNORM;
-            case TextureInternalFormat::SRGB8:
-                return VK_FORMAT_R8G8B8A8_SRGB;
-            case TextureInternalFormat::RGB8Snorm:
-                return VK_FORMAT_R8G8B8A8_SNORM;
-            case TextureInternalFormat::RGB10:
-            case TextureInternalFormat::RGB12:
-            case TextureInternalFormat::RGB16:
-                return VK_FORMAT_R16G16B16A16_UNORM;
-            case TextureInternalFormat::RGB16Snorm:
-                return VK_FORMAT_R16G16B16A16_SNORM;
-            case TextureInternalFormat::RGB16F:
-                return VK_FORMAT_R16G16B16A16_SFLOAT;
-            case TextureInternalFormat::RGB32F:
-                return VK_FORMAT_R32G32B32A32_SFLOAT;
-            case TextureInternalFormat::RGB8I:
-                return VK_FORMAT_R8G8B8A8_SINT;
-            case TextureInternalFormat::RGB8UI:
-                return VK_FORMAT_R8G8B8A8_UINT;
-            case TextureInternalFormat::RGB16I:
-                return VK_FORMAT_R16G16B16A16_SINT;
-            case TextureInternalFormat::RGB16UI:
-                return VK_FORMAT_R16G16B16A16_UINT;
-            case TextureInternalFormat::RGB32I:
-                return VK_FORMAT_R32G32B32A32_SINT;
-            case TextureInternalFormat::RGB32UI:
-                return VK_FORMAT_R32G32B32A32_UINT;
-            default:
-                return MG_Util::ConvertTextureInternalFormatToVkEnum(internalFormat);
-            }
-        }();
+        const VkFormat format = MG_Util::ConvertTextureInternalFormatToVkEnum(internalFormat);
         const VkImageAspectFlags aspect = ResolveImageAspectMaskForFormat(format);
         // Renderbuffers are never sampled (GL has no way to bind one to a sampler), so the
         // usage set is attachment + transfer: transfer covers readback (vkCmdCopyImageToBuffer),
@@ -368,46 +259,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                        : VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) |
             VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
 
-        // GL allows the implementation to allocate more samples than requested
-        // (glRenderbufferStorageMultisample only promises "at least"), and devices
-        // like llvmpipe expose 1x/4x but not 2x. Round the request up to the
-        // nearest supported count for this format.
-        if (renderbuffer->GetSamples() > 0) {
-            auto supportedIt = m_attachmentSampleCountsByFormat.find(format);
-            if (supportedIt == m_attachmentSampleCountsByFormat.end()) {
-                VkImageFormatProperties formatProperties{};
-                VkSampleCountFlags supported = VK_SAMPLE_COUNT_1_BIT;
-                if (vkGetPhysicalDeviceImageFormatProperties(m_physicalDevice, format, VK_IMAGE_TYPE_2D,
-                                                             VK_IMAGE_TILING_OPTIMAL, imageUsage, 0,
-                                                             &formatProperties) == VK_SUCCESS) {
-                    supported = formatProperties.sampleCounts;
-                }
-                supportedIt = m_attachmentSampleCountsByFormat.emplace(format, supported).first;
-            }
-            const VkSampleCountFlags supported = supportedIt->second;
-            if ((supported & sampleCount) == 0) {
-                // Smallest supported count above the request, else the largest below it.
-                Uint32 rounded = 0;
-                for (Uint32 bit = static_cast<Uint32>(sampleCount) << 1; bit <= VK_SAMPLE_COUNT_64_BIT; bit <<= 1) {
-                    if ((supported & bit) != 0) {
-                        rounded = bit;
-                        break;
-                    }
-                }
-                if (rounded == 0) {
-                    for (Uint32 bit = static_cast<Uint32>(sampleCount) >> 1; bit != 0; bit >>= 1) {
-                        if ((supported & bit) != 0) {
-                            rounded = bit;
-                            break;
-                        }
-                    }
-                }
-                if (rounded != 0) {
-                    sampleCount = static_cast<VkSampleCountFlagBits>(rounded);
-                }
-            }
-        }
-
         auto& resource = m_renderbufferResources[renderbuffer.get()];
         const Bool needsCreate =
             resource.image == VK_NULL_HANDLE ||
@@ -419,15 +270,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             resource.samples != renderbuffer->GetSamples();
         if (!needsCreate) {
             resource.renderbuffer = renderbuffer;
-            // A new renderbuffer at a recycled address may adopt a compatible entry that
-            // was already stamped dead; it is alive again, so cancel the aging.
-            resource.deadSinceFrame = RenderbufferResource::kNeverObservedDead;
             return &resource;
         }
 
-        // Respecify: park the old backing for aged destruction instead of destroying
-        // inline - it may still be referenced by in-flight command buffers.
-        DeferRenderbufferBackingRelease(resource);
         resource.Destroy(m_device, m_allocator);
         resource.renderbuffer = renderbuffer;
 
@@ -445,12 +290,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         imageInfo.usage = imageUsage;
         imageInfo.samples = sampleCount;
         imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-        // sRGB renderbuffers attach through their UNORM twin while GL_FRAMEBUFFER_SRGB
-        // is disabled, which needs a format-reinterpreting second view.
-        const Bool hasUnormTwin = ResolveSrgbAttachmentWriteFormat(format, false) != format;
-        if (hasUnormTwin) {
-            imageInfo.flags |= VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT;
-        }
 
         VkImageFormatProperties imageFormatProperties{};
         const VkResult imageFormatResult = vkGetPhysicalDeviceImageFormatProperties(
@@ -485,11 +324,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         viewInfo.subresourceRange.layerCount = 1;
         VK_VERIFY(vkCreateImageView(m_device, &viewInfo, nullptr, &resource.view),
                   "vkCreateImageView(renderbuffer)");
-        if (hasUnormTwin) {
-            viewInfo.format = ResolveSrgbAttachmentWriteFormat(format, false);
-            VK_VERIFY(vkCreateImageView(m_device, &viewInfo, nullptr, &resource.unormTwinView),
-                      "vkCreateImageView(renderbuffer unorm twin)");
-        }
 
         resource.layout = VK_IMAGE_LAYOUT_UNDEFINED;
         resource.format = format;
@@ -541,13 +375,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         pending.renderbuffer = renderbuffer;
         pending.payload.mask |= clearPayload.mask;
         if ((clearPayload.mask & GL_COLOR_BUFFER_BIT) != 0) {
-            // The whole colour description, not just the float vector: an integer clear keeps its
-            // value in colorInt/colorUint, and dropping the encoding here would leave the pending
-            // clear reading as an all-zero float one.
             pending.payload.color = clearPayload.color;
-            pending.payload.colorEncoding = clearPayload.colorEncoding;
-            pending.payload.colorInt = clearPayload.colorInt;
-            pending.payload.colorUint = clearPayload.colorUint;
         }
         if ((clearPayload.mask & GL_DEPTH_BUFFER_BIT) != 0) {
             pending.payload.depth = clearPayload.depth;
@@ -592,18 +420,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 
     VkRenderPassManager::HashType VkRenderPassManager::ComputeHash(
-        const MG_State::GLState::FramebufferObject& fbo, Uint32 swapchainImageIndex, Bool includePendingClear,
-        Bool includeDefaultFboDepthStencil) {
+        const MG_State::GLState::FramebufferObject& fbo, Uint32 swapchainImageIndex, Bool includePendingClear) {
         XXHASH_VERIFY(XXH64_reset(m_hashState, m_config.CacheVersion));
         const Bool isDefaultFbo = fbo.IsDefaultFramebuffer();
         if (isDefaultFbo) {
             XXHASH_VERIFY(XXH64_update(m_hashState, &swapchainImageIndex, sizeof(swapchainImageIndex)));
         }
-        // sRGB attachments switch between their sRGB and UNORM-twin views with this
-        // capability (ResolveSrgbAttachmentWriteFormat), changing the render pass formats.
-        const Bool framebufferSrgbEnabled =
-            MG_State::pGLContext->IsCapabilityEnabled(MobileGL::CapabilityInput::FramebufferSrgb);
-        XXHASH_VERIFY(XXH64_update(m_hashState, &framebufferSrgbEnabled, sizeof(framebufferSrgbEnabled)));
         auto& drawBuffers = fbo.GetDrawBuffers();
         XXHASH_VERIFY(XXH64_update(m_hashState, drawBuffers.data(), drawBuffers.size() * sizeof(drawBuffers[0])));
         auto readBuffer = fbo.GetReadBuffer();
@@ -677,17 +499,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                          attachment <= FramebufferAttachmentType::BackRight);
                     if (isDefaultColorAttachment) {
                         currentLayout = m_swapchainObject.GetImageLayout(swapchainImageIndex);
-                        // Content validity feeds the attachment's loadOp (see the
-                        // creation path), so it must key the cache as well.
-                        if (!m_swapchainObject.IsImageContentDefined(swapchainImageIndex)) {
-                            currentLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-                        }
                     } else if (attachment == FramebufferAttachmentType::Depth ||
                                attachment == FramebufferAttachmentType::Stencil) {
                         currentLayout = m_swapchainObject.GetDepthStencilImageLayout(swapchainImageIndex);
-                        if (!m_swapchainObject.IsDepthStencilContentDefined(swapchainImageIndex)) {
-                            currentLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-                        }
                     }
                 } else {
                     auto* textureResource = m_textureManager.SyncTextureAndGetDescriptor(*texture);
@@ -742,49 +556,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             combineFramebufferAttachmentObjHash(drawbuf);
         }
 
-        // The depth-less default-FBO flavor omits the depth/stencil attachment
-        // entirely, so it must hash differently from the depth-full flavor.
-        const Bool depthStencilIncluded = !isDefaultFbo || includeDefaultFboDepthStencil;
-        XXHASH_VERIFY(XXH64_update(m_hashState, &depthStencilIncluded, sizeof(depthStencilIncluded)));
-        if (depthStencilIncluded) {
-            combineFramebufferAttachmentObjHash(FramebufferAttachmentType::Depth);
-            combineFramebufferAttachmentObjHash(FramebufferAttachmentType::Stencil);
-        }
+        combineFramebufferAttachmentObjHash(FramebufferAttachmentType::Depth);
+        combineFramebufferAttachmentObjHash(FramebufferAttachmentType::Stencil);
 
         return XXH64_digest(m_hashState);
     }
 
     RenderPassEntry& VkRenderPassManager::GetOrCreateRenderPass(const MG_State::GLState::FramebufferObject& fbo,
-                                                                Uint32 swapchainImageIndex,
-                                                                Bool drawUsesDepthStencil) {
-        // Resolve the default-FBO depth flavor (see the header comment): keep the
-        // depth attachment when the caller needs it, when a depth/stencil clear is
-        // pending, or when the active pass already carries it (escalate-only, so
-        // alternating depth-less draws never split an established depth pass).
-        Bool includeDefaultFboDepthStencil = true;
-        if (fbo.IsDefaultFramebuffer()) {
-            Bool activeDefaultHasDepthStencil = false;
-            if (const auto* active = GetActiveRenderPass()) {
-                Bool activeIsSwapchainPass = false;
-                Bool activeHasSwapchainDepthStencil = false;
-                for (const auto& tracked : active->trackedAttachmentLayouts) {
-                    activeIsSwapchainPass |= tracked.target == TrackedAttachmentTarget::SwapchainColor;
-                    activeHasSwapchainDepthStencil |=
-                        tracked.target == TrackedAttachmentTarget::SwapchainDepthStencil;
-                }
-                activeDefaultHasDepthStencil = activeIsSwapchainPass && activeHasSwapchainDepthStencil;
-            }
-            const auto& defaultDepthAtt = fbo.GetAttachment(FramebufferAttachmentType::Depth);
-            const auto& defaultStencilAtt = fbo.GetAttachment(FramebufferAttachmentType::Stencil);
-            const Bool pendingDepthStencilClear =
-                (defaultDepthAtt.IsTexture() && m_clearManager.HasPendingClear(defaultDepthAtt)) ||
-                HasPendingRenderbufferClear(defaultDepthAtt) ||
-                (defaultStencilAtt.IsTexture() && m_clearManager.HasPendingClear(defaultStencilAtt)) ||
-                HasPendingRenderbufferClear(defaultStencilAtt);
-            includeDefaultFboDepthStencil =
-                drawUsesDepthStencil || activeDefaultHasDepthStencil || pendingDepthStencilClear;
-        }
-
+                                                                Uint32 swapchainImageIndex) {
         auto hasPendingClearOnFramebuffer = [&]() -> Bool {
             const auto& drawBuffers = fbo.GetDrawBuffers();
             for (auto attachment : drawBuffers) {
@@ -834,7 +613,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             m_rpFastFboVersion == fbo.GetObjectVersion() && m_rpFastSwapchainIndex == swapchainImageIndex &&
             m_rpFastTexEpoch == m_textureManager.GetTextureImageEpoch() &&
             m_rpFastRbEpoch == m_renderbufferImageEpoch &&
-            (!fbo.IsDefaultFramebuffer() || m_rpFastHadDepthStencil == includeDefaultFboDepthStencil) &&
             m_rpFastRenderPassHash == activeRenderPass->hash && !hasPendingClearOnFramebuffer()) {
             auto activeIt = m_renderPasses.find(activeRenderPass->hash);
             if (activeIt != m_renderPasses.end()) {
@@ -843,7 +621,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             }
         }
 
-        auto compatibilityHash = ComputeHash(fbo, swapchainImageIndex, false, includeDefaultFboDepthStencil);
+        auto compatibilityHash = ComputeHash(fbo, swapchainImageIndex, false);
         if (activeRenderPass != nullptr &&
             activeRenderPass->CompatibleWith(compatibilityHash) &&
             !hasPendingClearOnFramebuffer()) {
@@ -860,11 +638,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             m_rpFastTexEpoch = m_textureManager.GetTextureImageEpoch();
             m_rpFastRbEpoch = m_renderbufferImageEpoch;
             m_rpFastRenderPassHash = activeRenderPass->hash;
-            m_rpFastHadDepthStencil = activeIt->second.hasDepthStencilAttachment;
             activeIt->second.lastUsedFrame = m_frameCounter;
             return activeIt->second;
         }
-        auto hash = ComputeHash(fbo, swapchainImageIndex, true, includeDefaultFboDepthStencil);
+        auto hash = ComputeHash(fbo, swapchainImageIndex, true);
         auto it = m_renderPasses.find(hash);
         if (it != m_renderPasses.end()) {
             it->second.lastUsedFrame = m_frameCounter;
@@ -945,16 +722,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                     if (rbHasClear &&
                         MG_Util::GetBaseInternalFormatComponentCount(renderbuffer->GetInternalFormat()) == 3) {
                         // RGB renderbuffers are backed by an RGBA image; the missing alpha reads as 1.
-                        ForceOpaqueClearAlpha(rbClearPayload);
+                        rbClearPayload.color =
+                            FloatVec4(rbClearPayload.color.x(), rbClearPayload.color.y(),
+                                      rbClearPayload.color.z(), 1.0f);
                     }
 
                     const VkImageLayout trackedRbLayout = rbResource->layout;
-                    const Bool rbFramebufferSrgb =
-                        MG_State::pGLContext->IsCapabilityEnabled(MobileGL::CapabilityInput::FramebufferSrgb);
-                    const VkFormat rbAttachmentFormat =
-                        ResolveSrgbAttachmentWriteFormat(rbResource->format, rbFramebufferSrgb);
                     rbDesc.flags = 0;
-                    rbDesc.format = rbAttachmentFormat;
+                    rbDesc.format = rbResource->format;
                     rbDesc.samples = rbResource->sampleCount;
                     rbDesc.loadOp = rbHasClear ? VK_ATTACHMENT_LOAD_OP_CLEAR :
                                     (trackedRbLayout == VK_IMAGE_LAYOUT_UNDEFINED ? VK_ATTACHMENT_LOAD_OP_DONT_CARE
@@ -989,8 +764,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                         .finalLayout = rbDesc.finalLayout,
                     });
                     textureResources.emplace_back(nullptr);
-                    attachmentViews.emplace_back(rbAttachmentFormat != rbResource->format ? rbResource->unormTwinView
-                                                                                          : rbResource->view);
+                    attachmentViews.emplace_back(rbResource->view);
                     MOBILEGL_ASSERT(attachmentViews.back() != VK_NULL_HANDLE,
                                     "GetOrCreateRenderPass: renderbuffer view missing at color attachment %d", i);
 
@@ -1059,13 +833,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                         MOBILEGL_ASSERT(swapchainImageIndex < swapchainViews.size(),
                                         "GetOrCreateRenderPass: swapchain image index out of range");
                         trackedColorLayout = m_swapchainObject.GetImageLayout(swapchainImageIndex);
-                        // EGL: a presented color buffer's content is undefined when its
-                        // image comes back around (EGL_BUFFER_DESTROYED, the default
-                        // swap behaviour) - skip the tile load instead of reloading
-                        // stale pixels nobody may rely on.
-                        if (!hasClear && !m_swapchainObject.IsImageContentDefined(swapchainImageIndex)) {
-                            trackedColorLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-                        }
                         trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
                             .target = TrackedAttachmentTarget::SwapchainColor,
                             .swapchainImageIndex = swapchainImageIndex,
@@ -1079,15 +846,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                         MOBILEGL_ASSERT(textureResource,
                                         "GetOrCreateRenderPass: SyncTextureAndGetDescriptor failed at color attachment %d", i);
                         textureResources.emplace_back(textureResource);
-                        desc.format = ResolveSrgbAttachmentWriteFormat(
-                            textureResource->format,
-                            MG_State::pGLContext->IsCapabilityEnabled(MobileGL::CapabilityInput::FramebufferSrgb));
+                        desc.format = textureResource->format;
                         attachmentSampleCount = textureResource->sampleCount;
                         trackedColorLayout = textureResource->layout;
                         trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
                             .target = TrackedAttachmentTarget::Texture,
                             .texture = att.GetTexture(),
-                            .textureRaw = att.GetTexture().get(),
                             .textureMipLevel = attachmentMipLevel,
                             .finalLayout = desc.finalLayout,
                         });
@@ -1151,12 +915,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         };
         const auto* selectedDepthStencilAttachment = isUsableDepthStencilAttachment(depthAtt) ? &depthAtt :
                                                      (isUsableDepthStencilAttachment(stencilAtt) ? &stencilAtt : nullptr);
-        // Depth-less default-FBO flavor: nothing in this pass touches depth/stencil
-        // and their content is undefined anyway (EGL swap), so drop the attachment
-        // and its whole tile load + store.
-        if (isDefaultFbo && !includeDefaultFboDepthStencil) {
-            selectedDepthStencilAttachment = nullptr;
-        }
         const Bool hasDistinctDepthAndStencilAttachments =
             isUsableDepthStencilAttachment(depthAtt) && isUsableDepthStencilAttachment(stencilAtt) &&
             !sameDepthStencilAttachmentObject(depthAtt, stencilAtt);
@@ -1175,12 +933,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VkImageLayout trackedDepthLayout = isDefaultFbo ?
                 m_swapchainObject.GetDepthStencilImageLayout(swapchainImageIndex) :
                 VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
-            // EGL 1.5 §3.10.1: every ancillary (depth/stencil) buffer's content is
-            // undefined after a swap, so the first default-FBO pass of a frame can
-            // skip the depth/stencil tile load outright.
-            if (isDefaultFbo && !m_swapchainObject.IsDepthStencilContentDefined(swapchainImageIndex)) {
-                trackedDepthLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-            }
             depthAttachmentDescription.flags = 0;
             VkSampleCountFlagBits depthAttachmentSampleCount = VK_SAMPLE_COUNT_1_BIT;
             Int depthAttachmentId = 0;
@@ -1264,7 +1016,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
                     .target = TrackedAttachmentTarget::Texture,
                     .texture = selectedDepthStencilAttachment->GetTexture(),
-                    .textureRaw = selectedDepthStencilAttachment->GetTexture().get(),
                     .textureMipLevel = attachmentMipLevel,
                     .finalLayout = depthAttachmentDescription.finalLayout,
                 });
@@ -1310,22 +1061,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
         const Bool hasDepthStencilAttachment = depthAttachmentRef.attachment != VK_ATTACHMENT_UNUSED;
 
-        // Declare only the used colour-reference span. The GL draw-buffer array
-        // always spans 8 slots, so passes used to declare colorAttachmentCount=8
-        // with trailing VK_ATTACHMENT_UNUSED holes - and Adreno configures its
-        // per-pixel render-backend/export path from the DECLARED count, so every
-        // fragment of every pass paid the 8-target export cost (measured on
-        // Adreno 650 / MC 26.2: 11.9 -> 7.5 ms of GPU time per frame, with the
-        // single-quad swapchain blit pass alone dropping 1.26 -> 0.40 ms).
-        // Interior GL_NONE holes keep their slots so fragment-output locations
-        // still line up; a fragment output at a location past the trimmed count
-        // is discarded, which is exactly GL's semantic for writing to a draw
-        // buffer set to GL_NONE.
-        while (!colorAttachmentRefs.empty() &&
-               colorAttachmentRefs.back().attachment == VK_ATTACHMENT_UNUSED) {
-            colorAttachmentRefs.pop_back();
-        }
-
         // Subpass
         VkSubpassDescription subpassDesc;
         subpassDesc.flags = 0;
@@ -1443,14 +1178,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     void VkRenderPassManager::OnPresent() {
         ++m_frameCounter;
 
-        // Runs every frame boundary, ahead of the render-pass sweep gate below: the walk
-        // is O(#renderbuffer resources) — single digits in practice — and per-frame
-        // invocation keeps dead-resource reclaim latency at the aging bound instead of
-        // coupling it to renderbuffer *use* (the GetOrCreateRenderbufferResource call
-        // site never runs again once an app stops using renderbuffers).
-        CollectRenderbufferGarbage();
-        CollectDeferredRenderbufferReleases(/*destroyAll=*/false);
-
         // Sweep occasionally; evict entries whose last use is far past every
         // in-flight frame so their VkRenderPass/VkFramebuffer can be destroyed
         // safely (RenderPassEntry's destructor releases the handles).
@@ -1460,12 +1187,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return;
         }
 
-        // Collect the dying handles and notify once after the loop: pipelines hashed
-        // on them share the entries' >kRetireAgeFrames idleness (they are only bound
-        // by draws that hit those entries), so the observer may destroy them
-        // immediately - and a single batched notification costs one pipeline-cache
-        // scan instead of one per evicted pass.
-        Vector<VkRenderPass> destroyedRenderPasses;
         const Uint64 activeHash = s_hasActiveRenderPass ? s_activeRenderPass.hash : 0;
         for (auto it = m_renderPasses.begin(); it != m_renderPasses.end();) {
             const Bool isActive = s_hasActiveRenderPass && it->first == activeHash;
@@ -1473,15 +1194,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 if (m_rpFastValid && m_rpFastRenderPassHash == it->first) {
                     m_rpFastValid = false;
                 }
-                destroyedRenderPasses.push_back(it->second.renderPass);
                 it = m_renderPasses.erase(it);
             } else {
                 ++it;
             }
         }
-        if (!destroyedRenderPasses.empty() && m_evictionObserver != nullptr) {
-            m_evictionObserver->OnRenderPassesDestroyed(destroyedRenderPasses);
-        }
     }
 
     Bool VkRenderPassManager::BeginRenderPass(VkCommandBuffer commandBuffer, RenderPassEntry& renderPassEntry) {
@@ -1515,8 +1232,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 }
             }
             if ((clearPayload.mask & GL_COLOR_BUFFER_BIT) != 0) {
-                clearValues[pending.attachmentIndex].color =
-                    MakeVkClearColorValue(clearPayload, ColorFormatLacksAlpha(liveTexture.get()));
+                clearValues[pending.attachmentIndex].color = {
+                    clearPayload.color.x(),
+                    clearPayload.color.y(),
+                    clearPayload.color.z(),
+                    ResolveColorClearAlpha(liveTexture.get(), clearPayload.color.w())
+                };
             }
             if ((clearPayload.mask & GL_DEPTH_BUFFER_BIT) != 0) {
                 clearValues[pending.attachmentIndex].depthStencil.depth = clearPayload.depth;
@@ -1530,17 +1251,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         renderPassBeginInfo.pClearValues = clearValues.data();
 
         vkCmdBeginRenderPass(commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
-        // Pre-pass stream bookkeeping: this pass's attachment images are now
-        // referenced by the open frame recording.
-        if (s_textureManager != nullptr) {
-            for (const auto& tracked : renderPassEntry.trackedAttachmentLayouts) {
-                if (tracked.target == TrackedAttachmentTarget::Texture) {
-                    if (const auto texture = tracked.texture.lock()) {
-                        s_textureManager->StampTextureRecordingUse(texture.get());
-                    }
-                }
-            }
-        }
         for (const auto& pending: renderPassEntry.pendingClearAttachments) {
             if (pending.hasInlinePayload) {
                 if (s_renderPassManager != nullptr) {
@@ -1593,15 +1303,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                     case TrackedAttachmentTarget::SwapchainColor:
                         MOBILEGL_ASSERT(s_swapchainObject != nullptr, "EndRenderPass: swapchain object is null");
                         s_swapchainObject->SetImageLayout(trackedAttachment.swapchainImageIndex, trackedAttachment.finalLayout);
-                        // The pass stored into the attachment: its content is defined
-                        // until the image is next presented.
-                        s_swapchainObject->SetImageContentDefined(trackedAttachment.swapchainImageIndex, true);
                         break;
                     case TrackedAttachmentTarget::SwapchainDepthStencil:
                         MOBILEGL_ASSERT(s_swapchainObject != nullptr, "EndRenderPass: swapchain object is null");
                         s_swapchainObject->SetDepthStencilImageLayout(trackedAttachment.swapchainImageIndex,
                                                                       trackedAttachment.finalLayout);
-                        s_swapchainObject->SetDepthStencilContentDefined(trackedAttachment.swapchainImageIndex, true);
                         break;
                     default:
                         MOBILEGL_ASSERT(false, "EndRenderPass: unsupported tracked attachment target=%d",

MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.h

@@ -16,7 +16,6 @@
 #include "MG_State/GLState/FramebufferState/FramebufferObject.h"
 
 #include <Includes.h>
-#include <unordered_map>
 #include <vk_mem_alloc.h>
 
 namespace MobileGL::MG_Backend::DirectVulkan {
@@ -43,11 +42,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     struct TrackedAttachmentLayoutInfo {
         TrackedAttachmentTarget target = TrackedAttachmentTarget::Texture;
         WeakPtr<MG_State::GLState::ITextureObject> texture;
-        // Identity-compare shortcut for the per-draw "does the active pass use
-        // this sampled texture" probe: comparing this against a LIVE texture's
-        // address needs no weak_ptr::lock (two refcount atomics per probe).
-        // May dangle once the texture dies - compare only, never dereference.
-        MG_State::GLState::ITextureObject* textureRaw = nullptr;
         WeakPtr<MG_State::GLState::RenderbufferObject> renderbuffer;
         Uint32 textureMipLevel = 0;
         Uint32 swapchainImageIndex = 0;
@@ -163,53 +157,19 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     class VkRenderPassManager {
     public:
         using HashType = Uint64;
-
-        // Notified once per OnPresent sweep with every aged-out entry's VkRenderPass
-        // value: pipelines are hashed on the raw handle, and once destroyed the value
-        // may be recycled for an incompatible pass, so dependent caches must purge
-        // everything keyed on them before any new pass can be created (the sweep and
-        // the notification run back-to-back with no creation in between; observers
-        // compare the values, never dereference them). Batched so a mass-idle cohort
-        // (shader-pack switch, dimension exit) costs the observer one pipeline-cache
-        // scan, not one per dying pass. The wholesale paths
-        // (Shutdown/RecreateSwapchain) do not notify - their callers already drop
-        // every pipeline outright.
-        class IEvictionObserver {
-        public:
-            virtual ~IEvictionObserver() = default;
-            virtual void OnRenderPassesDestroyed(const Vector<VkRenderPass>& renderPasses) = 0;
-        };
-
         VkRenderPassManager(VkDevice device,
             VkPhysicalDevice physicalDevice, VmaAllocator allocator, const VulkanRendererConfig& config,
             VkClearManager& clearManager, VkTextureManager& textureManager, SwapchainObject& swapchainObject);
         ~VkRenderPassManager();
 
-        // Observer may be null (no notifications). Not owned.
-        void SetEvictionObserver(IEvictionObserver* observer) { m_evictionObserver = observer; }
-
         Bool Initialize();
         void Shutdown();
 
         HashType ComputeHash(
             const MG_State::GLState::FramebufferObject& fbo,
             Uint32 swapchainImageIndex,
-            Bool includePendingClear = true,
-            Bool includeDefaultFboDepthStencil = true);
-        // drawUsesDepthStencil: whether the operation about to run inside the pass
-        // reads or writes the depth/stencil buffer (depth test or stencil test
-        // enabled, or a depth/stencil clear). Only consulted for the DEFAULT
-        // framebuffer: EGL undefines its ancillary buffers at every swap, so a
-        // default-FBO pass whose draws provably never touch depth/stencil is
-        // created WITHOUT the depth attachment - on a tiler that skips the whole
-        // depth tile load AND store. The flavor only escalates: once a pass with
-        // depth is active, later depth-less draws keep using it, and a depth-using
-        // draw against a depth-less active pass resolves to a new (incompatible)
-        // entry, which the caller's compatibility check turns into a pass split;
-        // the new pass's depth loads DONT_CARE (content was undefined all along).
-        RenderPassEntry& GetOrCreateRenderPass(const MG_State::GLState::FramebufferObject& fbo,
-                                               Uint32 swapchainImageIndex,
-                                               Bool drawUsesDepthStencil = true);
+            Bool includePendingClear = true);
+        RenderPassEntry& GetOrCreateRenderPass(const MG_State::GLState::FramebufferObject& fbo, Uint32 swapchainImageIndex);
         void QueueRenderbufferClear(GLbitfield mask, const ClearFramebufferPayload& clearPayload,
                                     const MG_State::GLState::FramebufferObject& drawFbo);
         void QueueRenderbufferClear(const ClearAttachmentPayload& clearPayload,
@@ -232,20 +192,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         UnorderedMap<Uint64, RenderPassEntry> m_renderPasses;
         // Monotonic frame counter (bumped in OnPresent) for render-pass cache aging.
         Uint64 m_frameCounter = 0;
-        IEvictionObserver* m_evictionObserver = nullptr;
 
         // Bumped whenever a renderbuffer VkImage is (re)created; together with the texture
         // manager's image epoch this invalidates the render-pass fast path on any attachment
         // image recreation.
         Uint64 m_renderbufferImageEpoch = 1;
 
-    public:
-        // Bumped whenever a renderbuffer backing is (re)created; consecutive-draw
-        // snapshots include it so an attachment respecify forces a re-resolve.
-        Uint64 GetRenderbufferImageEpoch() const { return m_renderbufferImageEpoch; }
-
-    private:
-
         // Per-draw fast-path memo for GetOrCreateRenderPass (dirty-flag state tracking): when the
         // framebuffer state is provably unchanged since the last resolution, the active render pass
         // is reused WITHOUT recomputing the expensive per-draw hash. Invalidated by FBO switch /
@@ -258,26 +210,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Uint64 m_rpFastTexEpoch = 0;
         Uint64 m_rpFastRbEpoch = 0;
         Uint64 m_rpFastRenderPassHash = 0;
-        // Whether the memoized entry carries a depth/stencil attachment; a
-        // default-FBO resolution whose effective depth request differs must
-        // miss the memo (the depth-less/depth-full flavors hash differently).
-        Bool m_rpFastHadDepthStencil = false;
 
     public:
         struct RenderbufferResource {
-            // deadSinceFrame sentinel: the owning weak reference has not been observed
-            // expired. Dead resources age past every in-flight frame before Destroy
-            // (see CollectRenderbufferGarbage); the GPU may still reference the image
-            // for frames-in-flight frames after the GL object dies.
-            static constexpr Uint64 kNeverObservedDead = UINT64_MAX;
-
             WeakPtr<MG_State::GLState::RenderbufferObject> renderbuffer;
             VkImage image = VK_NULL_HANDLE;
             VmaAllocation allocation = nullptr;
             VkImageView view = VK_NULL_HANDLE;
-            // UNORM reinterpretation of an sRGB image, used as the attachment view while
-            // GL_FRAMEBUFFER_SRGB is disabled (raw writes). Null for non-sRGB formats.
-            VkImageView unormTwinView = VK_NULL_HANDLE;
             VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED;
             VkFormat format = VK_FORMAT_UNDEFINED;
             VkImageAspectFlags aspect = VK_IMAGE_ASPECT_NONE;
@@ -285,8 +224,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VkSampleCountFlagBits sampleCount = VK_SAMPLE_COUNT_1_BIT;
             TextureInternalFormat internalFormat = TextureInternalFormat::Unknown;
             Int samples = 0;
-            // m_frameCounter value at which the weak reference was first seen expired.
-            Uint64 deadSinceFrame = kNeverObservedDead;
 
             void Destroy(VkDevice device, VmaAllocator allocator);
         };
@@ -304,52 +241,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             ClearAttachmentPayload payload{};
         };
 
-        // A superseded renderbuffer backing (glRenderbufferStorage respecify) parked
-        // until enough frame boundaries have passed that no in-flight command buffer
-        // can still reference it; destroyed in OnPresent (see RetireAgeFrames).
-        struct DeferredRenderbufferRelease {
-            VkImage image = VK_NULL_HANDLE;
-            VmaAllocation allocation = nullptr;
-            VkImageView view = VK_NULL_HANDLE;
-            VkImageView unormTwinView = VK_NULL_HANDLE;
-            Uint64 deferredAtFrame = 0;
-        };
-
-        // Node-based std::unordered_map, deliberately not FastSTL's open-addressing UnorderedMap:
-        // callers cache a RenderbufferResource* - or a bare &resource->layout - and then make further
-        // calls that touch this map. BlitFramebuffer is the one that bit: it resolves the source and
-        // destination colour bindings (ResolveColorBlitBinding caches &rbResource->layout), then
-        // materializes the source's pending clear, which looks that same resource up again. FastSTL's
-        // operator[] runs its load-factor check before find_key and reallocates the whole bucket array
-        // when occupancy crosses it, so even a plain lookup relocates every element; erase only
-        // tombstones and never decrements the occupancy, so the doubling keeps firing. After a
-        // relocation the cached pointer names freed storage still holding the pre-clear
-        // VK_IMAGE_LAYOUT_UNDEFINED, and BlitFramebuffer bails out at "source image layout is
-        // undefined", silently dropping the blit - renderbuffers_storage_multisample read back zero
-        // instead of the clear colour on exactly the iterations that grew the table.
-        //
-        // Reordering the materialize ahead of the resolves - the fix ReadPixels got - does not cover
-        // this: the destination resolve still runs after the source pointer is taken. The depth blit,
-        // GetOrCreateRenderPass's depthRenderbufferResource and ReadDepthStencilPixels cache the same
-        // kind of pointer, so the invariant belongs in the container rather than in a per-call-site
-        // ordering rule. m_textureResources is node-based for the same reason. This buys stability
-        // across rehash and insert only - erase still invalidates the erased element, which is safe
-        // here because a renderbuffer that is an FBO attachment is held alive by that attachment.
-        std::unordered_map<MG_State::GLState::RenderbufferObject*, RenderbufferResource> m_renderbufferResources;
+        UnorderedMap<MG_State::GLState::RenderbufferObject*, RenderbufferResource> m_renderbufferResources;
         UnorderedMap<MG_State::GLState::RenderbufferObject*, PendingRenderbufferClear> m_pendingRenderbufferClears;
-        Vector<DeferredRenderbufferRelease> m_deferredRenderbufferReleases;
-        // Supported sample counts per attachment format, so per-draw resource lookups
-        // do not repeat vkGetPhysicalDeviceImageFormatProperties.
-        UnorderedMap<VkFormat, VkSampleCountFlags> m_attachmentSampleCountsByFormat;
 
         Bool HasPendingRenderbufferClear(
             const MG_State::GLState::FramebufferAttachmentObject& attachment) const;
         void CollectRenderbufferGarbage();
-        // Frame-boundary margin after which a resource last referenced by a retired
-        // GL object (or superseded backing) is provably past every in-flight frame.
-        Uint64 RetireAgeFrames() const;
-        void DeferRenderbufferBackingRelease(RenderbufferResource& resource);
-        void CollectDeferredRenderbufferReleases(Bool destroyAll);
 
         static inline XXH64_state_t* m_hashState = XXH64_createState();
         static inline ActiveRenderPassInfo s_activeRenderPass{};

MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.cpp

@@ -51,18 +51,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Float ResolveEffectiveMinLod(const MG_State::GLState::SamplerObject& sampler, Float effectiveMaxLod) {
             return std::min(sampler.GetMinLod(), effectiveMaxLod);
         }
-
-        // A single-level view can only ever deliver the base level, but the LOD clamp must not be
-        // collapsed to exactly 0: both GL and Vulkan pick magFilter over minFilter from the
-        // *clamped* lambda, so maxLod = 0 would make every fragment magnify and quietly retire the
-        // min filter. 0.25 is the value VkSamplerCreateInfo's own note prescribes for emulating
-        // GL's non-mipmapped minification - large enough for lambda to stay positive, small enough
-        // that a NEAREST mip mode still rounds down to level 0. Clamped rather than assigned, so a
-        // texture whose GL_TEXTURE_MAX_LOD really is 0 keeps magnifying as GL says it must.
-        Float ResolveSingleLevelMaxLod(const MG_State::GLState::SamplerObject& sampler, Bool singleLevelView) {
-            const Float maxLod = ResolveEffectiveMaxLod(sampler);
-            return singleLevelView ? std::min(maxLod, 0.25f) : maxLod;
-        }
     } // namespace
 
     Bool VkSamplerManager::Initialize(const InitInfo& initInfo) {
@@ -101,43 +89,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         m_device = VK_NULL_HANDLE;
         m_config = nullptr;
-        m_frameBoundaryCounter = 0;
-    }
-
-    void VkSamplerManager::OnFrameBoundary() {
-        ++m_frameBoundaryCounter;
-
-        // Sweep occasionally; destroy samplers whose last use is far past every
-        // in-flight frame. Destroy and erase must stay atomic, or Shutdown would
-        // double-free the handle; an evicted key that recurs simply re-creates
-        // its sampler on the next miss.
-        constexpr Uint64 kSweepInterval = 256;
-        constexpr Uint64 kRetireAgeBoundaries = 1024;
-        if ((m_frameBoundaryCounter % kSweepInterval) != 0) {
-            return;
-        }
-
-        for (auto it = m_samplers.begin(); it != m_samplers.end();) {
-            auto& entry = it->second;
-            if (m_frameBoundaryCounter - entry.lastUsedFrameBoundary > kRetireAgeBoundaries) {
-                if (m_device != VK_NULL_HANDLE && entry.handle != VK_NULL_HANDLE) {
-                    vkDestroySampler(m_device, entry.handle, nullptr);
-                }
-                it = m_samplers.erase(it);
-            } else {
-                ++it;
-            }
-        }
     }
 
     Uint64 VkSamplerManager::BuildSamplerKey(const MG_State::GLState::SamplerObject& sampler,
                                              const MG_State::GLState::ITextureObject& texture,
-                                             Bool forceNearestFiltering, Bool singleLevelView) const {
+                                             Bool forceNearestFiltering) const {
         MOBILEGL_ASSERT(m_config != nullptr, "VkSamplerManager::BuildSamplerKey: m_config is null");
         XXHASH_VERIFY(XXH64_reset(m_hashState, m_config->CacheVersion));
 
         XXHASH_VERIFY(XXH64_update(m_hashState, &forceNearestFiltering, sizeof(forceNearestFiltering)));
-        XXHASH_VERIFY(XXH64_update(m_hashState, &singleLevelView, sizeof(singleLevelView)));
 
         const auto minFilter = sampler.GetMinFilter();
         XXHASH_VERIFY(XXH64_update(m_hashState, &minFilter, sizeof(minFilter)));
@@ -151,7 +111,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         XXHASH_VERIFY(XXH64_update(m_hashState, &wrapT, sizeof(wrapT)));
         const auto wrapR = sampler.GetWrapR();
         XXHASH_VERIFY(XXH64_update(m_hashState, &wrapR, sizeof(wrapR)));
-        const auto maxLod = ResolveSingleLevelMaxLod(sampler, singleLevelView);
+        const auto maxLod = ResolveEffectiveMaxLod(sampler);
         const auto minLod = ResolveEffectiveMinLod(sampler, maxLod);
         XXHASH_VERIFY(XXH64_update(m_hashState, &minLod, sizeof(minLod)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &maxLod, sizeof(maxLod)));
@@ -164,7 +124,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         XXHASH_VERIFY(XXH64_update(m_hashState, &maxAnisotropy, sizeof(maxAnisotropy)));
         const auto compareMode = sampler.GetCompareMode();
         XXHASH_VERIFY(XXH64_update(m_hashState, &compareMode, sizeof(compareMode)));
-        const auto compareFunc = sampler.GetSamplerCompareFunc();
+        const auto compareFunc = ResolveCompareFunc(sampler, texture);
         XXHASH_VERIFY(XXH64_update(m_hashState, &compareFunc, sizeof(compareFunc)));
         const auto borderColor = ResolveVkBorderColor(sampler, texture);
         XXHASH_VERIFY(XXH64_update(m_hashState, &borderColor, sizeof(borderColor)));
@@ -173,20 +133,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     VkSampler VkSamplerManager::GetOrCreateSampler(const MG_State::GLState::SamplerObject& sampler,
                                                    const MG_State::GLState::ITextureObject& texture,
-                                                   Bool forceNearestFiltering, Uint32 viewLevelCount) {
-        // A view that exposes a single mip level has no second level to blend with, so GL's
-        // *_MIPMAP_* minification filters degenerate to plain filtering on the base level -
-        // sampling is unchanged by pinning the Vulkan sampler to NEAREST mip mode at LOD 0.
-        // It is not cosmetic: MobileGL backs such a view with a fully allocated mip chain whose
-        // tail is never written, and a LINEAR mip mode lets the texture unit issue the level+1
-        // fetch anyway. On Adreno that fetch lands in uninitialized UBWC pages (or past the
-        // allocation for a genuinely single-level image) and faults the GPU - the same failure
-        // the default-framebuffer blit shader had to work around with an explicit-LOD sample.
-        const Bool singleLevelView = viewLevelCount == 1;
-        const Uint64 key = BuildSamplerKey(sampler, texture, forceNearestFiltering, singleLevelView);
+                                                   Bool forceNearestFiltering) {
+        const Uint64 key = BuildSamplerKey(sampler, texture, forceNearestFiltering);
         auto it = m_samplers.find(key);
         if (it != m_samplers.end()) {
-            it->second.lastUsedFrameBoundary = m_frameBoundaryCounter;
             return it->second.handle;
         }
 
@@ -194,9 +144,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
         samplerInfo.magFilter = forceNearestFiltering ? VK_FILTER_NEAREST : ToVkFilter(sampler.GetMagFilter());
         samplerInfo.minFilter = forceNearestFiltering ? VK_FILTER_NEAREST : ToVkFilter(sampler.GetMinFilter());
-        samplerInfo.mipmapMode = (forceNearestFiltering || singleLevelView)
-                                     ? VK_SAMPLER_MIPMAP_MODE_NEAREST
-                                     : ToVkMipmapMode(sampler.GetMipmapMode());
+        samplerInfo.mipmapMode = forceNearestFiltering ? VK_SAMPLER_MIPMAP_MODE_NEAREST
+                                                       : ToVkMipmapMode(sampler.GetMipmapMode());
         samplerInfo.addressModeU = ToVkAddressMode(sampler.GetWrapS());
         samplerInfo.addressModeV = ToVkAddressMode(sampler.GetWrapT());
         samplerInfo.addressModeW = ToVkAddressMode(sampler.GetWrapR());
@@ -207,9 +156,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         samplerInfo.anisotropyEnable = maxAnisotropy > 1.0f ? VK_TRUE : VK_FALSE;
         samplerInfo.maxAnisotropy = maxAnisotropy;
         samplerInfo.compareEnable = sampler.GetCompareMode() == SamplerCompareMode::CompareToTexture ? VK_TRUE : VK_FALSE;
-        samplerInfo.compareOp = ToVkCompareOp(sampler.GetSamplerCompareFunc());
-        // Must match BuildSamplerKey's resolution exactly.
-        samplerInfo.maxLod = ResolveSingleLevelMaxLod(sampler, singleLevelView);
+        samplerInfo.compareOp = ToVkCompareOp(ResolveCompareFunc(sampler, texture));
+        samplerInfo.maxLod = ResolveEffectiveMaxLod(sampler);
         samplerInfo.minLod = ResolveEffectiveMinLod(sampler, samplerInfo.maxLod);
         samplerInfo.borderColor = ResolveVkBorderColor(sampler, texture);
         samplerInfo.unnormalizedCoordinates = VK_FALSE;
@@ -221,7 +169,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         entry.handle = vkSampler;
         entry.externalIndex = sampler.GetExternalIndex();
         entry.version = sampler.GetVersion();
-        entry.lastUsedFrameBoundary = m_frameBoundaryCounter;
         m_samplers[key] = entry;
         return vkSampler;
     }
@@ -281,15 +228,24 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
     }
 
+    SamplerCompareFunc VkSamplerManager::ResolveCompareFunc(const MG_State::GLState::SamplerObject& sampler,
+                                                            const MG_State::GLState::ITextureObject& texture) {
+        const auto compareFunc = sampler.GetSamplerCompareFunc();
+        if (sampler.GetCompareMode() == SamplerCompareMode::CompareToTexture &&
+            IsDepthTextureFormat(texture.GetFormat()) && compareFunc == SamplerCompareFunc::Always) {
+            return SamplerCompareFunc::LessEqual;
+        }
+
+        return compareFunc;
+    }
+
     VkBorderColor VkSamplerManager::ResolveVkBorderColor(const MG_State::GLState::SamplerObject& sampler,
                                                          const MG_State::GLState::ITextureObject& texture) {
         if (!UsesBorderColor(sampler)) {
             return VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK;
         }
 
-        // Border colour is sampler state: a bound sampler object supplies its own, and a texture
-        // with none reaches the very same value through the sampler object it owns.
-        const auto& borderColor = sampler.GetBorderColor();
+        const auto& borderColor = texture.GetBorderColor();
         const Bool isDepthTexture = IsDepthTextureFormat(texture.GetFormat());
 
         if (isDepthTexture) {

MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.h

@@ -33,42 +33,26 @@ public:
     Bool Initialize(const InitInfo& initInfo);
     void Shutdown();
 
-    // viewLevelCount is the mip-level count of the image view this sampler will be paired
-    // with; 0 means "unknown, do not narrow". See GetOrCreateSampler for why it matters.
     VkSampler GetOrCreateSampler(const MG_State::GLState::SamplerObject& sampler,
                                  const MG_State::GLState::ITextureObject& texture,
-                                 Bool forceNearestFiltering = false,
-                                 Uint32 viewLevelCount = 0);
-    // Frame boundary hook: ages the sampler cache and destroys samplers not used
-    // for many frames. The key hashes continuous float state (lodBias, LOD clamps,
-    // anisotropy), so an app animating those would otherwise mint an unbounded
-    // stream of never-destroyed VkSamplers and eventually exhaust the device's
-    // maxSamplerAllocationCount. A sampler idle for over a thousand frame
-    // boundaries cannot be referenced by any in-flight command buffer (frames in
-    // flight are single digits), and every descriptor set the GPU consumes is
-    // written that same frame with live handles (the per-binding resolve memo and
-    // descriptor-set reuse are both frame-reset), so destruction here needs no
-    // fence wait. Self-gated: one counter bump and compare except on sweep
-    // boundaries.
-    void OnFrameBoundary();
+                                 Bool forceNearestFiltering = false);
 
 private:
     struct SamplerCacheEntry {
         VkSampler handle = VK_NULL_HANDLE;
         Uint externalIndex = 0;
         Uint16 version = 0;
-        // Frame boundary of the last cache hit; entries idle past the
-        // OnFrameBoundary retirement age have their VkSampler destroyed.
-        Uint64 lastUsedFrameBoundary = 0;
     };
 
     Uint64 BuildSamplerKey(const MG_State::GLState::SamplerObject& sampler,
                            const MG_State::GLState::ITextureObject& texture,
-                           Bool forceNearestFiltering, Bool singleLevelView) const;
+                           Bool forceNearestFiltering) const;
     static VkFilter ToVkFilter(SamplerFilterMode mode);
     static VkSamplerMipmapMode ToVkMipmapMode(SamplerMipmapMode mode);
     static VkSamplerAddressMode ToVkAddressMode(SamplerWrapMode mode);
     static VkCompareOp ToVkCompareOp(SamplerCompareFunc func);
+    static SamplerCompareFunc ResolveCompareFunc(const MG_State::GLState::SamplerObject& sampler,
+                                                 const MG_State::GLState::ITextureObject& texture);
     static VkBorderColor ResolveVkBorderColor(const MG_State::GLState::SamplerObject& sampler,
                                               const MG_State::GLState::ITextureObject& texture);
     // The anisotropy Vulkan will actually apply: 1.0 (i.e. disabled) unless the feature is on and
@@ -83,8 +67,6 @@ private:
     Bool m_samplerAnisotropySupported = false;
     Float m_maxSamplerAnisotropy = 1.0f;
     UnorderedMap<Uint64, SamplerCacheEntry> m_samplers;
-    // Monotonic frame-boundary counter (bumped in OnFrameBoundary) for cache aging.
-    Uint64 m_frameBoundaryCounter = 0;
     static inline XXH64_state_t* m_hashState = XXH64_createState();
 };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.cpp

@@ -120,21 +120,31 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 
     static Bool TryResolveSampleCountFlagBits(Int requestedSamples, VkSampleCountFlagBits& outSampleCount) {
-        // GL promises "at least the requested samples", so a non-power-of-two
-        // request (legal in GL, e.g. 3) rounds up to the next Vulkan bit.
-        if (requestedSamples <= 1) {
+        switch (requestedSamples) {
+        case 1:
             outSampleCount = VK_SAMPLE_COUNT_1_BIT;
             return true;
-        }
-        if (requestedSamples > 64) {
+        case 2:
+            outSampleCount = VK_SAMPLE_COUNT_2_BIT;
+            return true;
+        case 4:
+            outSampleCount = VK_SAMPLE_COUNT_4_BIT;
+            return true;
+        case 8:
+            outSampleCount = VK_SAMPLE_COUNT_8_BIT;
+            return true;
+        case 16:
+            outSampleCount = VK_SAMPLE_COUNT_16_BIT;
+            return true;
+        case 32:
+            outSampleCount = VK_SAMPLE_COUNT_32_BIT;
+            return true;
+        case 64:
+            outSampleCount = VK_SAMPLE_COUNT_64_BIT;
+            return true;
+        default:
             return false;
         }
-        Uint32 bit = 1;
-        while (bit < static_cast<Uint32>(requestedSamples)) {
-            bit <<= 1;
-        }
-        outSampleCount = static_cast<VkSampleCountFlagBits>(bit);
-        return true;
     }
 
     static Bool IsCubeMapFaceUploadTarget(TextureUploadTarget target) {
@@ -564,27 +574,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             outShape.depth = 1;
             outShape.arrayLayers = 6;
             return true;
-        case TextureUploadTarget::CubeMapArray:
-        case TextureUploadTarget::ProxyCubeMapArray:
-            // GL_TEXTURE_CUBE_MAP_ARRAY is an array texture whose layers happen to be cube faces:
-            // one 2D image with arrayLayers = 6 * cubeCount, CUBE_COMPATIBLE so the whole thing can
-            // be sampled as a samplerCubeArray. glTexStorage3D hands the 6*n through as the GL depth
-            // and the upload path's depthSelectsArrayLayer already lists VK_IMAGE_VIEW_TYPE_CUBE_ARRAY,
-            // so the copies address layers correctly.
-            //
-            // A depth that is not a whole number of cubes, or a non-square level, has no Vulkan shape
-            // - declined the way every other unrepresentable target is. This function's Bool return
-            // exists for exactly that; asserting here would abort the process on ordinary application
-            // input, GL_PROXY_TEXTURE_CUBE_MAP_ARRAY above all.
-            if (texelSize.z() <= 0 || (texelSize.z() % 6) != 0 || texelSize.x() != texelSize.y()) {
-                return false;
-            }
-            outShape.imageType = VK_IMAGE_TYPE_2D;
-            outShape.viewType = VK_IMAGE_VIEW_TYPE_CUBE_ARRAY;
-            outShape.imageFlags = VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT;
-            outShape.depth = 1;
-            outShape.arrayLayers = static_cast<Uint32>(texelSize.z());
-            return true;
         default:
             return false;
         }
@@ -598,7 +587,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_allocator = initInfo.allocator;
         m_commandPool = initInfo.commandPool;
         m_graphicsQueue = initInfo.graphicsQueue;
-        m_imageFormatListSupported = initInfo.imageFormatListSupported;
         m_currentFrameIndex = 0;
         m_deferredReleases.clear();
         m_deferredReleases.resize(initInfo.frameCount);
@@ -618,14 +606,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 
     void VkTextureManager::Shutdown() {
-        if (m_device != VK_NULL_HANDLE) {
-            ReclaimCompletedUploads(/*waitAll=*/true);
-        }
         DestroyDeferredReleases();
-        ++m_resourceEraseEpoch;  // every memoized resource pointer dies with the map
         m_textureResources.clear();
         m_aliveObjects.clear();
-        m_storageImageTextures.clear();
 
         m_device = VK_NULL_HANDLE;
         m_physicalDevice = VK_NULL_HANDLE;
@@ -644,27 +627,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                         frameIndex, m_deferredViewReleases.size());
         m_currentFrameIndex = frameIndex;
         CollectDeferredReleases(frameIndex);
-        ReclaimCompletedUploads();
-
-        // Frame-boundary GC: every 64 frame boundaries (~1 s at 60 fps) bounds the reclaim
-        // latency for dead textures regardless of draw traffic — workloads that churn
-        // textures through clears/readbacks alone never reach the draw-gated
-        // CollectGarbage. Must run after CollectDeferredReleases above: the prune defers
-        // its releases into this frame's slot, which was just drained, so they are
-        // destroyed only after the slot's fence has been waited again one full frame-ring
-        // cycle from now (never while an in-flight frame may still reference them).
-        constexpr Uint32 kGcFrameInterval = 64;
-        ++m_gcFrameCounter;
-        if (m_gcFrameCounter % kGcFrameInterval == 0) {
-            PruneDeadTextures();
-        }
-    }
-
-    void VkTextureManager::CollectAllDeferredReleases() {
-        const SizeT frameCount = std::min(m_deferredReleases.size(), m_deferredViewReleases.size());
-        for (SizeT frameIndex = 0; frameIndex < frameCount; ++frameIndex) {
-            CollectDeferredReleases(static_cast<Uint32>(frameIndex));
-        }
     }
 
     void VkTextureManager::EraseTrackedTexture(const TextureIdentity& identity) {
@@ -674,10 +636,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             m_textureResources.erase(resourceIt);
         }
         m_aliveObjects.erase(identity);
-        m_storageImageTextures.erase(identity);
-        // Invalidate every cross-draw sampled-texture memo: the erased
-        // resource's address may be reused by a future emplace.
-        ++m_resourceEraseEpoch;
     }
 
     void VkTextureManager::PruneStaleTextureAliases(MG_State::GLState::ITextureObject* texture) {
@@ -733,63 +691,32 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             }
         }
 
-        // Cross-draw memo probe (see SyncedTextureMemoEntry): skips both map
-        // lookups and the (re)registration path for repeat-bound textures.
-        TextureResource* resourcePtr = nullptr;
-        for (Uint32 i = 0; i < kSyncedTextureMemoSize; ++i) {
-            const SyncedTextureMemoEntry& memo = m_syncedTextureMemo[i];
-            if (memo.texture == &texture && memo.lifetimeId == identity.lifetimeId &&
-                memo.eraseEpoch == m_resourceEraseEpoch) {
-                resourcePtr = memo.resource;
-                break;
+        auto aliveIt = m_aliveObjects.find(identity);
+        if (aliveIt != m_aliveObjects.end() && aliveIt->second.expired()) {
+            EraseTrackedTexture(aliveIt->first);
+            aliveIt = m_aliveObjects.end();
+        }
+
+        // Only (re)register and prune when this (texture, lifetime) pair is new: stale
+        // aliases can only come into existence through an address reuse, which by
+        // construction introduces a new identity. Doing this unconditionally made every
+        // sampled-texture sync scan the entire alive-texture map per draw.
+        if (aliveIt == m_aliveObjects.end()) {
+            const auto& liveTexture = MG_State::pGLContext->GetTextureObject(texture.GetExternalIndex());
+            if (liveTexture && liveTexture.get() == &texture) {
+                m_aliveObjects[identity] = WeakPtr<MG_State::GLState::ITextureObject>(liveTexture);
+                PruneStaleTextureAliases(&texture);
             }
         }
 
-        if (resourcePtr == nullptr) {
-            auto aliveIt = m_aliveObjects.find(identity);
-            if (aliveIt != m_aliveObjects.end() && aliveIt->second.expired()) {
-                EraseTrackedTexture(aliveIt->first);
-                aliveIt = m_aliveObjects.end();
-            }
-
-            // Only (re)register and prune when this (texture, lifetime) pair is new: stale
-            // aliases can only come into existence through an address reuse, which by
-            // construction introduces a new identity. Doing this unconditionally made every
-            // sampled-texture sync scan the entire alive-texture map per draw.
-            if (aliveIt == m_aliveObjects.end()) {
-                WeakPtr<MG_State::GLState::ITextureObject> aliveTexture;
-                const auto& liveTexture = MG_State::pGLContext->GetTextureObject(texture.GetExternalIndex());
-                if (liveTexture && liveTexture.get() == &texture) {
-                    aliveTexture = liveTexture;
-                } else {
-                    // The name lookup legally fails while the object is alive: the name was
-                    // deleted with the texture still attached to an FBO (the attachment's
-                    // SharedPtr keeps it alive), or the name was reused by a new texture, or
-                    // this is a default texture object (name 0 lives outside the name map).
-                    // Register through the object's own control block so the resource created
-                    // below still participates in weak-expiry GC instead of becoming an
-                    // orphan no reclamation path can reach until Shutdown.
-                    aliveTexture = texture.weak_from_this();
-                }
-                if (!aliveTexture.expired()) {
-                    m_aliveObjects[identity] = Move(aliveTexture);
-                    PruneStaleTextureAliases(&texture);
-                }
-            }
-
-            auto it = m_textureResources.find(identity);
-            if (it == m_textureResources.end()) {
-                TextureResource initial{};
-                auto [insertIt, _] = m_textureResources.emplace(identity, Move(initial));
-                it = insertIt;
-            }
-            resourcePtr = &(it->second);
-            m_syncedTextureMemo[m_syncedTextureMemoNext] =
-                SyncedTextureMemoEntry{&texture, identity.lifetimeId, m_resourceEraseEpoch, resourcePtr};
-            m_syncedTextureMemoNext = (m_syncedTextureMemoNext + 1) % kSyncedTextureMemoSize;
+        auto it = m_textureResources.find(identity);
+        if (it == m_textureResources.end()) {
+            TextureResource initial{};
+            auto [insertIt, _] = m_textureResources.emplace(identity, Move(initial));
+            it = insertIt;
         }
 
-        if (!SyncTexture(texture, *resourcePtr)) {
+        if (!SyncTexture(texture, it->second)) {
             MGLOG_D("%s: Syncing texture %d failed", __func__, texture.GetExternalIndex());
             return nullptr;
         }
@@ -803,11 +730,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 }
             }
             if (!recorded) {
-                m_drawSyncedThisDraw.push_back({identity, resourcePtr});
+                m_drawSyncedThisDraw.push_back({identity, &(it->second)});
             }
         }
 
-        return resourcePtr;
+        return &(it->second);
     }
 
     VkImageView VkTextureManager::GetOrCreateViewAtMipLevel(MG_State::GLState::ITextureObject& texture, Uint32 mipLevel) {
@@ -843,35 +770,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         if (resource == nullptr || resource->image == VK_NULL_HANDLE || mipLevel >= resource->mipLevels) {
             return VK_NULL_HANDLE;
         }
-        // A 3D image has arrayLayers == 1 and keeps its GL layers on the z axis, so a per-slice
-        // attachment view is a 2D view whose "array layer" is the slice - legal only on a
-        // 2D-array-compatible image (VUID-VkImageViewCreateInfo-image-04970), which
-        // SyncTextureResource asks for and may have had refused per format.
-        if (resource->viewType == VK_IMAGE_VIEW_TYPE_3D && viewType == VK_IMAGE_VIEW_TYPE_2D) {
-            const Uint32 sliceCount = std::max(resource->depth >> mipLevel, 1u);
-            if ((resource->imageCreateFlags & VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT) == 0 ||
-                layerCount == 0 || baseArrayLayer >= sliceCount || baseArrayLayer + layerCount > sliceCount) {
-                MGLOG_D("%s: cannot name slice span [%u, %u) of 3D textureId=%d (mip %u has %u slices, "
-                        "2D-array-compatible=%d)",
-                        __func__, baseArrayLayer, baseArrayLayer + layerCount, texture.GetExternalIndex(),
-                        mipLevel, sliceCount,
-                        (int)((resource->imageCreateFlags & VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT) != 0));
-                return VK_NULL_HANDLE;
-            }
-        } else if (layerCount == 0 || baseArrayLayer >= resource->arrayLayers ||
-                   baseArrayLayer + layerCount > resource->arrayLayers) {
+        if (layerCount == 0 || baseArrayLayer >= resource->arrayLayers ||
+            baseArrayLayer + layerCount > resource->arrayLayers) {
             MGLOG_D("%s: invalid layer span [%u, %u) for textureId=%d arrayLayers=%u",
                     __func__, baseArrayLayer, baseArrayLayer + layerCount, texture.GetExternalIndex(),
                     resource->arrayLayers);
             return VK_NULL_HANDLE;
         }
 
-        const Bool framebufferSrgbEnabled =
-            MG_State::pGLContext->IsCapabilityEnabled(MobileGL::CapabilityInput::FramebufferSrgb);
-        const VkFormat attachmentFormat = ResolveSrgbAttachmentWriteFormat(resource->format, framebufferSrgbEnabled);
-
-        if (attachmentFormat == resource->format && baseArrayLayer == 0 && layerCount == resource->arrayLayers &&
-            viewType == resource->viewType) {
+        if (baseArrayLayer == 0 && layerCount == resource->arrayLayers && viewType == resource->viewType) {
             return GetOrCreateViewAtMipLevel(texture, mipLevel);
         }
 
@@ -880,7 +787,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             .baseArrayLayer = baseArrayLayer,
             .layerCount = layerCount,
             .viewType = viewType,
-            .viewFormat = attachmentFormat,
         };
         auto it = resource->attachmentViews.find(key);
         if (it == resource->attachmentViews.end()) {
@@ -891,7 +797,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return attachmentView;
         }
 
-        attachmentView = CreateImageView(resource->image, attachmentFormat, resource->aspect, viewType,
+        attachmentView = CreateImageView(resource->image, resource->format, resource->aspect, viewType,
                                          mipLevel, 1, baseArrayLayer, layerCount);
         if (attachmentView == VK_NULL_HANDLE) {
             MGLOG_D("%s: CreateImageView failed for textureId=%d mipLevel=%u baseArrayLayer=%u layerCount=%u viewType=%d",
@@ -1107,16 +1013,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         return view;
     }
 
-    void VkTextureManager::StampTextureRecordingUse(MG_State::GLState::ITextureObject* texture) {
-        if (texture == nullptr) {
-            return;
-        }
-        auto it = m_textureResources.find(MakeTextureIdentity(texture));
-        if (it != m_textureResources.end()) {
-            it->second.lastRecordingGeneration = m_recordingGeneration;
-        }
-    }
-
     void VkTextureManager::UpdateTrackedImageLayout(MG_State::GLState::ITextureObject* texture, VkImageLayout newLayout) {
         MOBILEGL_ASSERT(texture != nullptr, "UpdateTrackedImageLayout: texture is null");
         auto it = m_textureResources.find(MakeTextureIdentity(texture));
@@ -1144,8 +1040,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MOBILEGL_ASSERT(writtenMipLevel < resource.mipLevels,
                         "UpdateTrackedImageLayoutAfterAttachmentWrite: textureId=%d mipLevel=%u out of range %u",
                         texture->GetExternalIndex(), writtenMipLevel, resource.mipLevels);
-        // Pre-pass stream bookkeeping: the render pass that just ended wrote this image.
-        StampResourceRecordingUse(resource);
 
         if (resource.layout != newLayout && resource.mipLevels > 1) {
             VkPipelineStageFlags srcStageMask = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
@@ -1230,8 +1124,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                               VK_ACCESS_SHADER_READ_BIT, resource->aspect, 0, resource->mipLevels,
                                               resource->arrayLayers);
         MOBILEGL_ASSERT(ok, "TransitionTextureForSampling: transition failed for textureId=%d", texture.GetExternalIndex());
-        // Pre-pass stream bookkeeping: a command referencing the image was recorded.
-        StampResourceRecordingUse(*resource);
         return ok;
     }
 
@@ -1261,44 +1153,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                               resource->aspect, 0, resource->mipLevels, resource->arrayLayers);
         MOBILEGL_ASSERT(ok, "TransitionTextureForStorageImage: transition failed for textureId=%d",
                         texture.GetExternalIndex());
-        // Pre-pass stream bookkeeping: a command referencing the image was recorded.
-        StampResourceRecordingUse(*resource);
         return ok;
     }
 
-    void VkTextureManager::MarkStorageImageTexture(MG_State::GLState::ITextureObject& texture) {
-        m_storageImageTextures.insert(MakeTextureIdentity(&texture));
-    }
-
-    Bool VkTextureManager::NeedsStorageUsageUpgrade(MG_State::GLState::ITextureObject& texture) const {
-        const TextureIdentity identity = MakeTextureIdentity(&texture);
-        if (m_storageImageTextures.find(identity) == m_storageImageTextures.end()) {
-            return false;
-        }
-        const auto it = m_textureResources.find(identity);
-        // No image yet: the first sync creates it with STORAGE straight away, so there is nothing
-        // to preserve and nothing to order against.
-        return it != m_textureResources.end() && it->second.image != VK_NULL_HANDLE &&
-               !it->second.storageUsageResolved;
-    }
-
-    Bool VkTextureManager::NeedsMipChainGrowth(MG_State::GLState::ITextureObject& texture) const {
-        const TextureIdentity identity = MakeTextureIdentity(&texture);
-        const auto it = m_textureResources.find(identity);
-        // No image yet: the first sync sizes the chain from the levels the texture already
-        // defines, so nothing is recreated and there is nothing to order against.
-        if (it == m_textureResources.end() || it->second.image == VK_NULL_HANDLE) {
-            return false;
-        }
-        const TextureResource& resource = it->second;
-        const IntVec3 extent = {static_cast<Int>(resource.extent.width), static_cast<Int>(resource.extent.height),
-                                static_cast<Int>(resource.depth)};
-        return resource.mipLevels < ComputeFullMipLevelCount(extent);
-    }
-
     Bool VkTextureManager::NeedsStorageImagePreparation(MG_State::GLState::ITextureObject& texture) const {
-        const TextureIdentity identity = MakeTextureIdentity(&texture);
-        const auto it = m_textureResources.find(identity);
+        const auto it = m_textureResources.find(MakeTextureIdentity(&texture));
         if (it == m_textureResources.end()) {
             return true;
         }
@@ -1306,12 +1165,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         if (resource.image == VK_NULL_HANDLE || resource.layout != VK_IMAGE_LAYOUT_GENERAL) {
             return true;
         }
-        // The image predates this texture's first image-unit binding, so it was created without
-        // STORAGE usage and has to be recreated - which is illegal inside a render pass.
-        if (!resource.storageUsageResolved &&
-            m_storageImageTextures.find(identity) != m_storageImageTextures.end()) {
-            return true;
-        }
         // Mirror SyncTexture's cross-draw skip condition: any version drift means the sync
         // path may upload or rebuild, both of which need the render pass ended first.
         const auto* mipTexture = MG_State::GLState::AsMipmapTexture(&texture);
@@ -1359,22 +1212,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 
     SizeT VkTextureManager::CollectGarbage() {
-        // Draw-gated stagger (1 in 256 calls): keeps the per-draw cost at one counter
-        // bump. The guaranteed reclaim path is the frame-boundary prune in BeginFrame;
-        // this remains as a cheap assist so draw-heavy workloads reclaim sooner.
         m_gcCounter++;
         if (m_gcCounter != 0) {
             return 0;
         }
-        return PruneDeadTextures();
-    }
-
-    SizeT VkTextureManager::PruneDeadTextures() {
-        // Erasing entries would dangle the raw TextureResource pointers memoized for the
-        // current draw; every call path (BeginFrame, and CollectGarbage at the top of a
-        // freshly opened draw-sync scope) runs before any memo entry is recorded.
-        MOBILEGL_ASSERT(m_drawSyncedThisDraw.empty(),
-                        "PruneDeadTextures: draw-sync memo holds raw resource pointers an erase would dangle");
 
         Vector<MG_State::GLState::ITextureObject*> expiredTextures;
         expiredTextures.reserve(m_aliveObjects.size());
@@ -1386,25 +1227,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         for (auto* texture : expiredTextures) {
             PruneStaleTextureAliases(texture);
         }
-        SizeT prunedCount = expiredTextures.size();
-
-        // Orphan sweep: after the pass above, m_aliveObjects holds only live entries.
-        // Registration in SyncTextureAndGetDescriptor cannot fail for a SharedPtr-owned
-        // texture (weak_from_this fallback), so a resource whose identity has no alive
-        // entry has no trackable owner: its GL-side object is gone, or was never
-        // shared-owned, in which case recreation on a later sync is the safe fallback.
-        // Destruction goes through the per-frame deferred queues, never immediate.
-        Vector<TextureIdentity> orphanIdentities;
-        for (auto it = m_textureResources.begin(); it != m_textureResources.end(); ++it) {
-            if (m_aliveObjects.find(it->first) == m_aliveObjects.end()) {
-                orphanIdentities.emplace_back(it->first);
-            }
-        }
-        for (const auto& identity : orphanIdentities) {
-            EraseTrackedTexture(identity);
-        }
-        prunedCount += orphanIdentities.size();
-        return prunedCount;
+        return expiredTextures.size();
     }
 
     Bool VkTextureManager::SyncTexture(MG_State::GLState::ITextureObject &texture,
@@ -1418,13 +1241,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         const auto* syncingMipTexture = MG_State::GLState::AsMipmapTexture(&texture);
         const Uint32 syncingMipLevelCount =
             syncingMipTexture != nullptr ? syncingMipTexture->GetMipmapLevelCount() : 0u;
-        // A pending storage-usage upgrade also has to bust the skip: nothing about the texture's
-        // content or params changed, but the image itself must be recreated with STORAGE usage
-        // before it can back an image-unit descriptor.
-        const Bool storageUpgradePending =
-            !outResource.storageUsageResolved &&
-            m_storageImageTextures.find(MakeTextureIdentity(&texture)) != m_storageImageTextures.end();
-        if (outResource.image != VK_NULL_HANDLE && !storageUpgradePending &&
+        if (outResource.image != VK_NULL_HANDLE &&
             outResource.syncedContentVersion == syncingContentVersion &&
             outResource.syncedTextureParamsVersion == texture.GetTextureParamsVersion() &&
             outResource.syncedMipLevelCount == syncingMipLevelCount) {
@@ -1494,23 +1311,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                const IntVec3 &texelSize, SizeT byteSize, Uint32 mipLevels,
                                                TextureResource &resource) {
         const TextureFormatInfo formatInfo = ResolveTextureFormatInfo(texture.GetFormat());
-        VkFormat format = formatInfo.format;
+        const VkFormat format = formatInfo.format;
         if (format == VK_FORMAT_UNDEFINED) {
             MGLOG_D("%s: format == VK_FORMAT_UNDEFINED", __func__);
             return false;
         }
-        // X8_D24 lacks optimal-tiling support on several drivers (lavapipe included);
-        // D32_SFLOAT holds every 24-bit depth value exactly, and the upload path
-        // converts the shadow words to float (see the pure-depth branch below).
-        if (format == VK_FORMAT_X8_D24_UNORM_PACK32) {
-            VkFormatProperties formatProperties{};
-            vkGetPhysicalDeviceFormatProperties(m_physicalDevice, format, &formatProperties);
-            constexpr VkFormatFeatureFlags kDepthAttachmentAndSample =
-                VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT;
-            if ((formatProperties.optimalTilingFeatures & kDepthAttachmentAndSample) != kDepthAttachmentAndSample) {
-                format = VK_FORMAT_D32_SFLOAT;
-            }
-        }
         if (texelSize.x() <= 0 || texelSize.y() <= 0 /*|| byteSize == 0*/) {
             MGLOG_D("%s: texelSize or byteSize is zero", __func__);
             return false;
@@ -1520,36 +1325,19 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return false;
         }
         const Bool isMultisampleTexture = IsMultisampleTextureUploadTarget(uploadTarget);
-        // A texture that has only ever defined level 0 gets a single-level backing
-        // (ANGLE's model). Preallocating the full chain put every render target
-        // onto Adreno's multi-mip image layout and grew each texture by a third
-        // for levels most textures never define. Once a second level is defined
-        // the backing is recreated ONE time with the full chain (the
-        // preserve-copy path below carries the pixels over), so sequentially-
-        // defined atlas mips do not recreate per level, and glGenerateMipmap -
-        // which defines every level before syncing - works unchanged.
+        const Uint32 backingMipLevels =
+            isMultisampleTexture ? 1u : std::max(mipLevels, ComputeFullMipLevelCount(texelSize));
         TextureShapeInfo shapeInfo{};
         const Bool supportedShape = TryResolveTextureShapeInfo(texture, uploadTarget, texelSize, shapeInfo);
-        // ComputeFullMipLevelCount takes max(x, y, z), and for every ARRAY shape z is the layer
-        // count, not a mip-able axis: a 4x4 array with 192 layers asked for 6 levels on an image
-        // whose legal maximum is 3 (VUID-VkImageCreateInfo-mipLevels-00958). Only the image's own
-        // extent - width, height and shapeInfo.depth, which is 1 for every array - can bound it.
-        // lavapipe has been letting this through unvalidated; a strict driver would not.
-        const IntVec3 mipExtent{texelSize.x(), texelSize.y(), static_cast<Int>(shapeInfo.depth)};
-        const Uint32 fullMipLevels = ComputeFullMipLevelCount(mipExtent);
-        const Uint32 backingMipLevels =
-            isMultisampleTexture ? 1u : (mipLevels > 1 ? std::min(std::max(mipLevels, fullMipLevels), fullMipLevels) : 1u);
+        MOBILEGL_ASSERT(supportedShape,
+                        "SyncTextureResource: unsupported uploadTarget=%s textureTarget=%s textureId=%d size=(%d,%d,%d) "
+                        "mipLevels=%u vkViewType=%d",
+                        MG_Util::ConvertTextureUploadTargetToString(uploadTarget).c_str(),
+                        MG_Util::ConvertTextureTargetToString(texture.GetTarget()).c_str(),
+                        texture.GetExternalIndex(), texelSize.x(), texelSize.y(), texelSize.z(), mipLevels,
+                        static_cast<Int>(MG_Util::ConvertTextureUploadTargetToVkEnum(uploadTarget)));
         if (!supportedShape) {
-            // A gap in this backend's coverage, not a broken invariant: the GL front end accepts
-            // targets this manager has no Vulkan image shape for yet (cube map arrays above all).
-            // Declining the sync leaves the texture unbacked - wrong, but recoverable - where an
-            // assertion would take the whole process down instead.
-            MGLOG_W("SyncTextureResource: unsupported uploadTarget=%s textureTarget=%s textureId=%d size=(%d,%d,%d) "
-                    "mipLevels=%u vkViewType=%d",
-                    MG_Util::ConvertTextureUploadTargetToString(uploadTarget).c_str(),
-                    MG_Util::ConvertTextureTargetToString(texture.GetTarget()).c_str(), texture.GetExternalIndex(),
-                    texelSize.x(), texelSize.y(), texelSize.z(), mipLevels,
-                    static_cast<Int>(MG_Util::ConvertTextureUploadTargetToVkEnum(uploadTarget)));
+            MGLOG_D("%s: not Texture2D, unsupported", __func__);
             return false;
         }
         VkSampleCountFlagBits resolvedSampleCount = VK_SAMPLE_COUNT_1_BIT;
@@ -1560,116 +1348,19 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                     MG_Util::ConvertTextureUploadTargetToString(uploadTarget).c_str());
             return false;
         }
-        // glTexStorage*Multisample(samples = 1) is legal GL, but a one-sample image cannot back a
-        // sampler2DMS: VUID-RuntimeSpirv-samples-08726 forbids an OpTypeImage with MS = 1 from
-        // reading an image created with VK_SAMPLE_COUNT_1_BIT, and the fetch returns undefined data
-        // rather than an error. GL only promises "at least the requested number of samples", so
-        // giving a multisample texture two is both legal and the only way to keep the shader's view
-        // of it honest. GL_TEXTURE_SAMPLES still reports what the application asked for - that is
-        // read off the texture object, not off the image.
-        if (isMultisampleTexture && resolvedSampleCount == VK_SAMPLE_COUNT_1_BIT) {
-            resolvedSampleCount = VK_SAMPLE_COUNT_2_BIT;
-        }
 
         const VkImageAspectFlags aspect = GetAspectMaskForFormat(format);
         VkFormatProperties formatProperties{};
         vkGetPhysicalDeviceFormatProperties(m_physicalDevice, format, &formatProperties);
-        // Only textures that have actually been bound to a GL image unit get STORAGE usage (and
-        // the MUTABLE_FORMAT it drags in for format-reinterpreting image views). Requesting it
-        // for every storage-capable colour texture costs real bandwidth: Adreno cannot keep UBWC
-        // compression on an image that may be written through a storage descriptor, so the whole
-        // render target - MC's included - runs uncompressed. MarkStorageImageTexture upgrades a
-        // texture before its first image-unit draw, and the usage below feeds the compatibility
-        // check so the upgrade recreates the image.
-        const Bool markedAsStorageImage =
-            m_storageImageTextures.find(MakeTextureIdentity(
-                const_cast<MG_State::GLState::ITextureObject*>(&texture))) != m_storageImageTextures.end();
-        // Storage-image CAPABILITY (does the format allow it at all) is deliberately separate from
-        // whether this texture actually needs the usage. MUTABLE_FORMAT keys off capability, as
-        // before: format-reinterpreting views are not a storage-only concern - the SAMPLED path
-        // needs them too (GetOrCreateSampledImageView bails out without it, see ~line 892), so
-        // tying MUTABLE_FORMAT to the image-unit mark would break sampled format reinterpretation
-        // for every texture that never becomes a storage image.
-        const Bool storageImageCapable =
+        const Bool supportsStorageImage =
             !isMultisampleTexture &&
             (aspect & VK_IMAGE_ASPECT_COLOR_BIT) != 0 &&
             (formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_STORAGE_IMAGE_BIT) != 0;
-        const Bool supportsStorageImage = storageImageCapable && markedAsStorageImage;
         VkImageCreateFlags imageCreateFlags = shapeInfo.imageFlags;
-        // One z slice of a 3D texture can only be attached to a framebuffer through a 2D view over
-        // it, which needs the image to be 2D-array-compatible (Vulkan 1.1 core, promoted from
-        // VK_KHR_maintenance1). Asked for optimistically and withdrawn per format below if the
-        // driver refuses - losing it only costs per-slice attachment, while failing creation would
-        // lose the texture entirely.
-        if (shapeInfo.imageType == VK_IMAGE_TYPE_3D && !isMultisampleTexture &&
-            m_2dArrayCompatibleUnsupported.find(format) == m_2dArrayCompatibleUnsupported.end()) {
-            imageCreateFlags |= VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT;
-        }
-        if (storageImageCapable && IsMutableStorageImageFormat(format) &&
+        if (supportsStorageImage && IsMutableStorageImageFormat(format) &&
             m_mutableFormatUnsupported.find(format) == m_mutableFormatUnsupported.end()) {
             imageCreateFlags |= VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT;
         }
-        // sRGB color images attach through their UNORM twin while GL_FRAMEBUFFER_SRGB is
-        // disabled (see ResolveSrgbAttachmentWriteFormat), which needs format-reinterpreting
-        // views - multisample sRGB render targets included.
-        if (ResolveSrgbAttachmentWriteFormat(format, false) != format &&
-            (aspect & VK_IMAGE_ASPECT_COLOR_BIT) != 0 &&
-            m_mutableFormatUnsupported.find(format) == m_mutableFormatUnsupported.end()) {
-            imageCreateFlags |= VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT;
-        }
-
-        VkImageUsageFlags desiredUsage =
-            VK_IMAGE_USAGE_SAMPLED_BIT |
-            (supportsStorageImage ? VK_IMAGE_USAGE_STORAGE_BIT : 0) |
-            ((aspect & VK_IMAGE_ASPECT_COLOR_BIT) ? VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT : 0) |
-            (((aspect & VK_IMAGE_ASPECT_DEPTH_BIT) || (aspect & VK_IMAGE_ASPECT_STENCIL_BIT)) ?
-                 VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT :
-                 0);
-        if (!isMultisampleTexture) {
-            desiredUsage |= VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
-        }
-
-        // Round a multisample request up to a count the device supports for this
-        // format (GL only promises "at least"), mirroring the renderbuffer path.
-        if (isMultisampleTexture && resolvedSampleCount != VK_SAMPLE_COUNT_1_BIT) {
-            auto supportedIt = m_multisampleCountsByFormat.find(format);
-            if (supportedIt == m_multisampleCountsByFormat.end()) {
-                VkImageFormatProperties imageFormatProperties{};
-                VkSampleCountFlags supported = VK_SAMPLE_COUNT_1_BIT;
-                if (vkGetPhysicalDeviceImageFormatProperties(m_physicalDevice, format, shapeInfo.imageType,
-                                                             VK_IMAGE_TILING_OPTIMAL, desiredUsage, imageCreateFlags,
-                                                             &imageFormatProperties) == VK_SUCCESS) {
-                    supported = imageFormatProperties.sampleCounts;
-                }
-                supportedIt = m_multisampleCountsByFormat.emplace(format, supported).first;
-            }
-            const VkSampleCountFlags supported = supportedIt->second;
-            if ((supported & resolvedSampleCount) == 0) {
-                Uint32 rounded = 0;
-                for (Uint32 bit = static_cast<Uint32>(resolvedSampleCount) << 1; bit <= VK_SAMPLE_COUNT_64_BIT;
-                     bit <<= 1) {
-                    if ((supported & bit) != 0) {
-                        rounded = bit;
-                        break;
-                    }
-                }
-                if (rounded == 0) {
-                    // Never land on one sample: that is the VUID-RuntimeSpirv-samples-08726
-                    // violation the floor above exists to avoid, and it would come back silently
-                    // for any format whose only supported count is 1.
-                    for (Uint32 bit = static_cast<Uint32>(resolvedSampleCount) >> 1;
-                         bit > static_cast<Uint32>(VK_SAMPLE_COUNT_1_BIT); bit >>= 1) {
-                        if ((supported & bit) != 0) {
-                            rounded = bit;
-                            break;
-                        }
-                    }
-                }
-                if (rounded != 0) {
-                    resolvedSampleCount = static_cast<VkSampleCountFlagBits>(rounded);
-                }
-            }
-        }
 
         const Bool compatible = resource.image != VK_NULL_HANDLE && resource.format == format &&
                                 resource.extent.width == static_cast<Uint32>(texelSize.x()) &&
@@ -1679,7 +1370,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                 resource.viewType == shapeInfo.viewType &&
                                 resource.sampleCount == resolvedSampleCount &&
                                 resource.imageCreateFlags == imageCreateFlags &&
-                                resource.usageFlags == desiredUsage &&
                                 resource.mipLevels == backingMipLevels;
         if (compatible) {
             if (resource.perMipViews.size() != backingMipLevels) {
@@ -1688,10 +1378,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             if (resource.perMipSampledViews.size() != backingMipLevels) {
                 resource.perMipSampledViews.resize(backingMipLevels, VK_NULL_HANDLE);
             }
-            // Keeping the image is itself the answer to the mark: either it already carries
-            // STORAGE, or this format can never carry it. Either way there is nothing left to
-            // recreate, so stop reporting the texture as needing preparation.
-            resource.storageUsageResolved = markedAsStorageImage;
             return true;
         }
 
@@ -1706,10 +1392,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             resource.sampleCount == resolvedSampleCount &&
             resource.imageCreateFlags == imageCreateFlags &&
             resolvedSampleCount == VK_SAMPLE_COUNT_1_BIT &&
-            // '<=' rather than '<': a storage-usage upgrade recreates the image with an
-            // unchanged mip count, and its contents (a render target's pixels live only on the
-            // GPU) still have to survive. The vkCmdCopyImage below copies min(mipLevels).
-            resource.mipLevels <= backingMipLevels &&
+            resource.mipLevels < backingMipLevels &&
             resource.layout != VK_IMAGE_LAYOUT_UNDEFINED;
 
         std::unique_ptr<TextureResource> preservedResource;
@@ -1731,39 +1414,17 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         imageInfo.format = format;
         imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
         imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        imageInfo.usage = desiredUsage;
-        imageInfo.samples = resolvedSampleCount;
-
-        // Bound the mutability. A blindly-mutable image has to be laid out so that ANY format in
-        // its compatibility class can be viewed, which costs bandwidth compression on tilers;
-        // naming the exact set instead lets the driver keep it. Only safe when that set really is
-        // exhaustive, so it is restricted to textures that are not image-unit bound: sampled views
-        // can only ever ask for ResolveSampledImageViewFormat's output, whereas glBindImageTexture
-        // may name any compatible format, which nothing here can enumerate ahead of time.
-        Vector<VkFormat> viewFormats;
-        VkImageFormatListCreateInfo formatListInfo{};
-        if (m_imageFormatListSupported && !supportsStorageImage &&
-            (imageInfo.flags & VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT) != 0) {
-            viewFormats.push_back(format);
-            for (const SamplerNumericDomain domain : {SamplerNumericDomain::Float,
-                                                      SamplerNumericDomain::SignedInteger,
-                                                      SamplerNumericDomain::UnsignedInteger}) {
-                const VkFormat viewFormat = ResolveSampledImageViewFormat(format, domain);
-                if (viewFormat == VK_FORMAT_UNDEFINED) {
-                    continue;
-                }
-                if (std::find(viewFormats.begin(), viewFormats.end(), viewFormat) == viewFormats.end()) {
-                    viewFormats.push_back(viewFormat);
-                }
-            }
-            formatListInfo.sType = VK_STRUCTURE_TYPE_IMAGE_FORMAT_LIST_CREATE_INFO;
-            formatListInfo.viewFormatCount = static_cast<Uint32>(viewFormats.size());
-            formatListInfo.pViewFormats = viewFormats.data();
-            imageInfo.pNext = &formatListInfo;
+        imageInfo.usage = VK_IMAGE_USAGE_SAMPLED_BIT |
+                          (supportsStorageImage ? VK_IMAGE_USAGE_STORAGE_BIT : 0) |
+                          ((aspect & VK_IMAGE_ASPECT_COLOR_BIT) ? VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT : 0) |
+                          (((aspect & VK_IMAGE_ASPECT_DEPTH_BIT) || (aspect & VK_IMAGE_ASPECT_STENCIL_BIT)) ?
+                               VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT :
+                               0);
+        if (!isMultisampleTexture) {
+            imageInfo.usage |= VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
         }
-
-        if (isMultisampleTexture || (imageInfo.flags & (VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT |
-                                                        VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT)) != 0) {
+        imageInfo.samples = resolvedSampleCount;
+        if (isMultisampleTexture || (imageInfo.flags & VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT) != 0) {
             VkImageFormatProperties imageFormatProperties{};
             VkResult imageFormatResult = vkGetPhysicalDeviceImageFormatProperties(
                 m_physicalDevice, format, imageInfo.imageType, imageInfo.tiling, imageInfo.usage,
@@ -1786,22 +1447,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                     m_physicalDevice, format, imageInfo.imageType, imageInfo.tiling, imageInfo.usage,
                     imageInfo.flags, &imageFormatProperties);
             }
-            if (imageFormatResult != VK_SUCCESS && !isMultisampleTexture &&
-                (imageInfo.flags & VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT) != 0) {
-                // Losing 2D-array compatibility only costs per-slice framebuffer attachment for this
-                // format; failing creation would lose the texture entirely. Remembered so later syncs
-                // neither reprobe nor flag-mismatch against this image and recreate it.
-                MGLOG_W("%s: VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT is unsupported for format=%d "
-                        "textureId=%d; creating without it (per-slice framebuffer attachment will be "
-                        "unavailable for it)",
-                        __func__, static_cast<Int>(format), texture.GetExternalIndex());
-                m_2dArrayCompatibleUnsupported.insert(format);
-                imageInfo.flags &= ~VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT;
-                imageCreateFlags = imageInfo.flags;
-                imageFormatResult = vkGetPhysicalDeviceImageFormatProperties(
-                    m_physicalDevice, format, imageInfo.imageType, imageInfo.tiling, imageInfo.usage,
-                    imageInfo.flags, &imageFormatProperties);
-            }
             if (imageFormatResult != VK_SUCCESS ||
                 (isMultisampleTexture && (imageFormatProperties.sampleCounts & resolvedSampleCount) == 0)) {
                 MGLOG_D("%s: image flags=0x%x sampleCount=%d are unsupported for textureId=%d target=%s "
@@ -1817,21 +1462,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VmaAllocationCreateInfo allocationInfo{};
         allocationInfo.usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE;
         allocationInfo.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
-        // Soft failure like the unsupported-sample-count path above: a driver can pass the
-        // vkGetPhysicalDeviceImageFormatProperties pre-check yet still refuse the creation
-        // (e.g. multisampled depth on lavapipe); the texture simply stays unbacked.
-        const VkResult createImageResult =
-            vmaCreateImage(m_allocator, &imageInfo, &allocationInfo, &resource.image, &resource.allocation, nullptr);
-        if (createImageResult != VK_SUCCESS) {
-            MGLOG_F("SyncTextureResource: vmaCreateImage failed (%d) textureId=%d extent=%ux%u depth=%u layers=%u "
-                    "mips=%u samples=%d format=%d",
-                    createImageResult, texture.GetExternalIndex(), imageInfo.extent.width, imageInfo.extent.height,
-                    imageInfo.extent.depth, imageInfo.arrayLayers, imageInfo.mipLevels,
-                    static_cast<Int>(imageInfo.samples), static_cast<Int>(imageInfo.format));
-            resource.image = VK_NULL_HANDLE;
-            resource.allocation = nullptr;
-            return false;
-        }
+        VK_VERIFY(vmaCreateImage(m_allocator, &imageInfo, &allocationInfo, &resource.image, &resource.allocation, nullptr),
+                  "vmaCreateImage(texture)");
         ++m_textureImageEpoch; // a new attachment image invalidates cached render passes
 
         resource.layout = VK_IMAGE_LAYOUT_UNDEFINED;
@@ -1848,8 +1480,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         resource.viewType = shapeInfo.viewType;
         resource.sampleCount = resolvedSampleCount;
         resource.imageCreateFlags = imageCreateFlags;
-        resource.usageFlags = imageInfo.usage;
-        resource.storageUsageResolved = markedAsStorageImage;
         resource.syncedTextureParamsVersion = 0;
 
         if (preservedResource) {
@@ -1899,28 +1529,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_deferredViewReleases[frameIndex].clear();
     }
 
-    void VkTextureManager::ReclaimCompletedUploads(Bool waitAll) {
-        if (m_pendingUploadReclaims.empty()) {
-            return;
-        }
-
-        SizeT completed = 0;
-        for (; completed < m_pendingUploadReclaims.size(); ++completed) {
-            PendingUploadReclaim& entry = m_pendingUploadReclaims[completed];
-            if (waitAll) {
-                VK_VERIFY(vkWaitForFences(m_device, 1, &entry.fence, VK_TRUE, UINT64_MAX),
-                          "vkWaitForFences(texture upload reclaim)");
-            } else if (vkGetFenceStatus(m_device, entry.fence) != VK_SUCCESS) {
-                break;
-            }
-            vkDestroyFence(m_device, entry.fence, nullptr);
-            vkFreeCommandBuffers(m_device, m_commandPool, 1, &entry.commandBuffer);
-            vmaDestroyBuffer(m_allocator, entry.stagingBuffer, entry.stagingAllocation);
-        }
-        m_pendingUploadReclaims.erase(m_pendingUploadReclaims.begin(),
-                                      m_pendingUploadReclaims.begin() + static_cast<std::ptrdiff_t>(completed));
-    }
-
     void VkTextureManager::DestroyDeferredReleases() {
         for (auto& deferredReleases : m_deferredReleases) {
             deferredReleases.clear();
@@ -2122,119 +1730,17 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             return true;
         }
 
-        // Combined depth-stencil images need per-aspect copies (VkBufferImageCopy aspectMask
-        // must have exactly one bit set), so de-interleave the shadow's GL wire format into
-        // a depth plane followed by a stencil plane per upload item.
+        // Combined depth-stencil images need per-aspect de-interleaved copies (VkBufferImageCopy
+        // aspectMask must have exactly one bit set). Until that is implemented, skip the upload
+        // instead of recording an invalid command buffer that kills the process.
         const VkImageAspectFlags uploadAspectMask = GetAspectMaskForFormat(outResource.format);
-        const Bool isCombinedDepthStencil =
-            (uploadAspectMask & VK_IMAGE_ASPECT_DEPTH_BIT) && (uploadAspectMask & VK_IMAGE_ASPECT_STENCIL_BIT);
-        if (isCombinedDepthStencil) {
-            const Bool srcIsD24S8 = outResource.format == VK_FORMAT_D24_UNORM_S8_UINT;
-            const Bool srcIsD32FS8 = outResource.format == VK_FORMAT_D32_SFLOAT_S8_UINT;
-            if (!srcIsD24S8 && !srcIsD32FS8) {
-                MGLOG_E("UploadDirtyMipLevels: unsupported combined depth-stencil format %d for textureId=%d",
-                        static_cast<Int>(outResource.format), mipmapTexture.GetExternalIndex());
-                for (const auto& item : uploadItems) {
-                    mipmapTexture.MarkStorageDirty(item.target, item.level, false);
-                }
-                return true;
-            }
-            stagingSize = 0;
-            for (auto& item : uploadItems) {
-                const SizeT texelCount = static_cast<SizeT>(item.texelSize.x()) *
-                                         static_cast<SizeT>(item.texelSize.y()) *
-                                         static_cast<SizeT>(std::max(item.texelSize.z(), 1));
-                const SizeT shadowTexelSize = item.uploadByteSize / std::max<SizeT>(texelCount, 1);
-                MOBILEGL_ASSERT(shadowTexelSize == 4 || shadowTexelSize == 8,
-                                "UploadDirtyMipLevels: unexpected depth-stencil shadow texel size %zu for textureId=%d",
-                                shadowTexelSize, mipmapTexture.GetExternalIndex());
-                // Depth plane as the aspect's buffer-copy format (32-bit word for
-                // D24: low 24 bits; float for D32F), then one stencil byte per texel.
-                Vector<Uint8> deinterleaved(texelCount * 4 + texelCount);
-                Uint8* depthPlane = deinterleaved.data();
-                Uint8* stencilPlane = deinterleaved.data() + texelCount * 4;
-                const Uint8* shadow = static_cast<const Uint8*>(item.source);
-                for (SizeT t = 0; t < texelCount; ++t) {
-                    if (shadowTexelSize == 8) {
-                        // GL_FLOAT_32_UNSIGNED_INT_24_8_REV: float depth, then a word
-                        // with stencil in its low 8 bits.
-                        float depthValue;
-                        Uint32 stencilWord;
-                        std::memcpy(&depthValue, shadow + t * 8, sizeof(depthValue));
-                        std::memcpy(&stencilWord, shadow + t * 8 + 4, sizeof(stencilWord));
-                        if (srcIsD32FS8) {
-                            std::memcpy(depthPlane + t * 4, &depthValue, sizeof(depthValue));
-                        } else {
-                            const float clamped = std::min(std::max(depthValue, 0.0f), 1.0f);
-                            const Uint32 depthWord = static_cast<Uint32>(clamped * 16777215.0f + 0.5f);
-                            std::memcpy(depthPlane + t * 4, &depthWord, sizeof(depthWord));
-                        }
-                        stencilPlane[t] = static_cast<Uint8>(stencilWord & 0xFFu);
-                    } else {
-                        // GL_UNSIGNED_INT_24_8: depth in the high 24 bits, stencil low 8.
-                        Uint32 packed;
-                        std::memcpy(&packed, shadow + t * 4, sizeof(packed));
-                        if (srcIsD24S8) {
-                            const Uint32 depthWord = packed >> 8;
-                            std::memcpy(depthPlane + t * 4, &depthWord, sizeof(depthWord));
-                        } else {
-                            const float depthValue = static_cast<float>(packed >> 8) / 16777215.0f;
-                            std::memcpy(depthPlane + t * 4, &depthValue, sizeof(depthValue));
-                        }
-                        stencilPlane[t] = static_cast<Uint8>(packed & 0xFFu);
-                    }
-                }
-                item.expandedData = Move(deinterleaved);
-                item.source = item.expandedData.data();
-                item.uploadByteSize = item.expandedData.size();
-                item.offset = stagingSize;
-                stagingSize += static_cast<VkDeviceSize>(item.uploadByteSize);
-            }
-        }
-
-        // Pure-depth images whose canonical shadow layout differs from the image texel
-        // layout (the shadow keeps a full-scale 16/32-bit unorm word or a float; the
-        // image may be X8_D24 or a D32_SFLOAT fallback) convert per texel here.
-        if (uploadAspectMask == VK_IMAGE_ASPECT_DEPTH_BIT) {
-            const TextureInternalFormat depthInternal = mipmapTexture.GetFormat();
-            const Bool shadowIsFloat = depthInternal == TextureInternalFormat::DepthComponent32F;
-            const Bool dstIsFloat = outResource.format == VK_FORMAT_D32_SFLOAT;
-            const Bool dstIsD24Word = outResource.format == VK_FORMAT_X8_D24_UNORM_PACK32;
-            stagingSize = 0;
-            for (auto& item : uploadItems) {
-                const SizeT texelCount = static_cast<SizeT>(item.texelSize.x()) *
-                                         static_cast<SizeT>(item.texelSize.y()) *
-                                         static_cast<SizeT>(std::max(item.texelSize.z(), 1));
-                const SizeT shadowTexelSize = item.uploadByteSize / std::max<SizeT>(texelCount, 1);
-                const Bool needsConversion =
-                    (dstIsFloat && !shadowIsFloat) || (dstIsD24Word && shadowTexelSize == 4 && !shadowIsFloat);
-                if (needsConversion) {
-                    Vector<Uint8> converted(texelCount * 4);
-                    const Uint8* shadow = static_cast<const Uint8*>(item.source);
-                    for (SizeT t = 0; t < texelCount; ++t) {
-                        Uint32 wide = 0;
-                        if (shadowTexelSize == 2) {
-                            Uint16 raw = 0;
-                            std::memcpy(&raw, shadow + t * 2, sizeof(raw));
-                            wide = (static_cast<Uint32>(raw) << 16) | raw;
-                        } else {
-                            std::memcpy(&wide, shadow + t * 4, sizeof(wide));
-                        }
-                        if (dstIsFloat) {
-                            const float value = static_cast<float>(static_cast<double>(wide) / 4294967295.0);
-                            std::memcpy(converted.data() + t * 4, &value, sizeof(value));
-                        } else { // X8_D24: depth in the low 24 bits of a 32-bit word
-                            const Uint32 word = wide >> 8;
-                            std::memcpy(converted.data() + t * 4, &word, sizeof(word));
-                        }
-                    }
-                    item.expandedData = Move(converted);
-                    item.source = item.expandedData.data();
-                    item.uploadByteSize = item.expandedData.size();
-                }
-                item.offset = stagingSize;
-                stagingSize += static_cast<VkDeviceSize>(item.uploadByteSize);
+        if ((uploadAspectMask & VK_IMAGE_ASPECT_DEPTH_BIT) && (uploadAspectMask & VK_IMAGE_ASPECT_STENCIL_BIT)) {
+            MGLOG_E("UploadDirtyMipLevels: skipping unimplemented depth-stencil data upload for textureId=%d",
+                    mipmapTexture.GetExternalIndex());
+            for (const auto& item : uploadItems) {
+                mipmapTexture.MarkStorageDirty(item.target, item.level, false);
             }
+            return true;
         }
 
         VkBuffer stagingBuffer = VK_NULL_HANDLE;
@@ -2287,14 +1793,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                         aspectMask, 0, outResource.mipLevels, outResource.arrayLayers);
         MOBILEGL_ASSERT(ok, "TransitionImageLayout to VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL failed");
 
-        // Array textures keep their GL "depth" in VkImage array layers, so the
-        // copy must address layerCount, not imageExtent.depth (which is invalid
-        // for 2D images and silently dropped every layer past the first).
-        const Bool depthSelectsArrayLayer = outResource.viewType == VK_IMAGE_VIEW_TYPE_1D_ARRAY ||
-                                            outResource.viewType == VK_IMAGE_VIEW_TYPE_2D_ARRAY ||
-                                            outResource.viewType == VK_IMAGE_VIEW_TYPE_CUBE_ARRAY;
         for (const auto& item : uploadItems) {
-            const Uint32 depthOrLayers = item.texelSize.z() > 0 ? static_cast<Uint32>(item.texelSize.z()) : 1u;
             VkBufferImageCopy copy{};
             copy.bufferOffset = item.offset;
             copy.bufferRowLength = 0;
@@ -2302,24 +1801,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             copy.imageSubresource.aspectMask = aspectMask;
             copy.imageSubresource.mipLevel = item.level;
             copy.imageSubresource.baseArrayLayer = item.baseArrayLayer;
-            copy.imageSubresource.layerCount = depthSelectsArrayLayer ? depthOrLayers : 1;
+            copy.imageSubresource.layerCount = 1;
             copy.imageOffset = {0, 0, 0};
             copy.imageExtent = {static_cast<Uint32>(item.texelSize.x()), static_cast<Uint32>(item.texelSize.y()),
-                                depthSelectsArrayLayer ? 1u : depthOrLayers};
-            if (isCombinedDepthStencil) {
-                const SizeT texelCount = static_cast<SizeT>(item.texelSize.x()) *
-                                         static_cast<SizeT>(item.texelSize.y()) *
-                                         static_cast<SizeT>(std::max(item.texelSize.z(), 1));
-                VkBufferImageCopy depthCopy = copy;
-                depthCopy.imageSubresource.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
-                VkBufferImageCopy stencilCopy = copy;
-                stencilCopy.imageSubresource.aspectMask = VK_IMAGE_ASPECT_STENCIL_BIT;
-                stencilCopy.bufferOffset = item.offset + static_cast<VkDeviceSize>(texelCount) * 4;
-                const VkBufferImageCopy copies[2] = {depthCopy, stencilCopy};
-                vkCmdCopyBufferToImage(commandBuffer, stagingBuffer, outResource.image,
-                                       VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 2, copies);
-                continue;
-            }
+                                item.texelSize.z() > 0 ? static_cast<Uint32>(item.texelSize.z()) : 1u};
             vkCmdCopyBufferToImage(commandBuffer, stagingBuffer, outResource.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
                                    1, &copy);
         }
@@ -2350,23 +1835,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VK_VERIFY(vkCreateFence(m_device, &fenceInfo, nullptr, &uploadFence), "vkCreateFence(texture upload)");
 
         VK_VERIFY(vkQueueSubmit(m_graphicsQueue, 1, &submitInfo, uploadFence), "vkQueueSubmit(texture)");
-        // Do NOT wait the fence here: this submit sits behind the previous
-        // frame's rendering on the queue, so a synchronous wait stalls the CPU
-        // until the GPU drains - a per-frame vkQueueWaitIdle for any workload
-        // with animated textures. Ordering against the current frame's draws is
-        // already guaranteed (its command buffer is submitted later, at
-        // present), so only the transient objects need to survive execution;
-        // park them until the fence signals.
-        m_pendingUploadReclaims.push_back({uploadFence, commandBuffer, stagingBuffer, stagingAllocation});
-        ReclaimCompletedUploads();
-        // Backstop for pathological upload storms: bound in-flight staging
-        // memory by blocking on the oldest upload only once the list is deep.
-        constexpr SizeT kMaxPendingTextureUploads = 16;
-        if (m_pendingUploadReclaims.size() > kMaxPendingTextureUploads) {
-            VK_VERIFY(vkWaitForFences(m_device, 1, &m_pendingUploadReclaims.front().fence, VK_TRUE, UINT64_MAX),
-                      "vkWaitForFences(texture upload backstop)");
-            ReclaimCompletedUploads();
-        }
+        VK_VERIFY(vkWaitForFences(m_device, 1, &uploadFence, VK_TRUE, UINT64_MAX), "vkWaitForFences(texture upload)");
+        vkDestroyFence(m_device, uploadFence, nullptr);
+        vkFreeCommandBuffers(m_device, m_commandPool, 1, &commandBuffer);
+
+        vmaDestroyBuffer(m_allocator, stagingBuffer, stagingAllocation);
 
         if (!ok) {
             MGLOG_D("%s: texture upload cmd failed", __func__);

MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.h

@@ -28,9 +28,6 @@ public:
     // manager keys its per-draw fast path on this so an attachment's image recreation
     // invalidates the cached render pass (dirty-flag tracking; portable to Vulkan 1.1).
     Uint64 GetTextureImageEpoch() const { return m_textureImageEpoch; }
-    // Bumped whenever any tracked texture resource is erased; cached
-    // TextureResource pointers are valid only while this is unchanged.
-    Uint64 GetResourceEraseEpoch() const { return m_resourceEraseEpoch; }
 
     struct TextureIdentity {
         MG_State::GLState::ITextureObject* texture = nullptr;
@@ -56,9 +53,6 @@ public:
         VkCommandPool commandPool = VK_NULL_HANDLE;
         VkQueue graphicsQueue = VK_NULL_HANDLE;
         Uint32 frameCount = 0;
-        // VK_KHR_image_format_list is enabled: MUTABLE_FORMAT images can name the exact set of
-        // formats they will be viewed as, which is what lets a tiler keep them compressed.
-        Bool imageFormatListSupported = false;
     };
 
     struct TextureResource {
@@ -67,16 +61,12 @@ public:
             Uint32 baseArrayLayer = 0;
             Uint32 layerCount = 1;
             VkImageViewType viewType = VK_IMAGE_VIEW_TYPE_2D;
-            // May differ from the image format: sRGB images attach through their UNORM
-            // twin while GL_FRAMEBUFFER_SRGB is disabled.
-            VkFormat viewFormat = VK_FORMAT_UNDEFINED;
 
             Bool operator==(const AttachmentViewKey& other) const {
                 return mipLevel == other.mipLevel &&
                        baseArrayLayer == other.baseArrayLayer &&
                        layerCount == other.layerCount &&
-                       viewType == other.viewType &&
-                       viewFormat == other.viewFormat;
+                       viewType == other.viewType;
             }
         };
 
@@ -87,8 +77,6 @@ public:
                 hash ^= std::hash<Uint32>{}(key.layerCount) + 0x9e3779b9u + (hash << 6) + (hash >> 2);
                 hash ^= std::hash<Uint32>{}(static_cast<Uint32>(key.viewType)) +
                         0x9e3779b9u + (hash << 6) + (hash >> 2);
-                hash ^= std::hash<Uint32>{}(static_cast<Uint32>(key.viewFormat)) +
-                        0x9e3779b9u + (hash << 6) + (hash >> 2);
                 return hash;
             }
         };
@@ -169,25 +157,7 @@ public:
         VkImageViewType viewType = VK_IMAGE_VIEW_TYPE_2D;
         VkSampleCountFlagBits sampleCount = VK_SAMPLE_COUNT_1_BIT;
         VkImageCreateFlags imageCreateFlags = 0;
-        // Usage the live image was created with. STORAGE is only requested for textures that
-        // have actually been bound to a GL image unit, because on Adreno a storage-capable
-        // image loses UBWC bandwidth compression; a later image binding upgrades the usage
-        // and recreates the image, so the resolved usage has to be part of the compatibility
-        // check that decides whether the existing image can be kept.
-        VkImageUsageFlags usageFlags = 0;
-        // True once this image was (re)resolved while the texture was already marked as an
-        // image-unit texture. Distinguishes "not upgraded yet" from "cannot be upgraded"
-        // (a format whose optimalTilingFeatures lack STORAGE_IMAGE never gains the bit), so
-        // NeedsStorageImagePreparation cannot ask for a recreate that will never happen.
-        Bool storageUsageResolved = false;
         Uint16 syncedTextureParamsVersion = 0;
-        // Recording generation (VkTextureManager::GetRecordingGeneration) of the last
-        // command referencing this image that was recorded into the CURRENT frame
-        // command buffer. An image untouched by the open recording may have its
-        // out-of-pass work (deferred clears, sampled-layout transitions) recorded
-        // into the frame's PRE command buffer - which executes strictly before the
-        // frame's commands - instead of splitting the active render pass.
-        Uint64 lastRecordingGeneration = 0;
         // Snapshot of ITextureObject::GetContentVersion() at the last successful sync;
         // lets SyncTexture skip the whole re-check/re-upload when content is unchanged.
         Uint64 syncedContentVersion = 0;
@@ -220,10 +190,7 @@ public:
             std::swap(this->viewType, that.viewType);
             std::swap(this->sampleCount, that.sampleCount);
             std::swap(this->imageCreateFlags, that.imageCreateFlags);
-            std::swap(this->usageFlags, that.usageFlags);
-            std::swap(this->storageUsageResolved, that.storageUsageResolved);
             std::swap(this->syncedTextureParamsVersion, that.syncedTextureParamsVersion);
-            std::swap(this->lastRecordingGeneration, that.lastRecordingGeneration);
             std::swap(this->syncedContentVersion, that.syncedContentVersion);
             std::swap(this->syncedMipLevelCount, that.syncedMipLevelCount);
         }
@@ -284,8 +251,6 @@ public:
             viewType = VK_IMAGE_VIEW_TYPE_2D;
             sampleCount = VK_SAMPLE_COUNT_1_BIT;
             imageCreateFlags = 0;
-            usageFlags = 0;
-            storageUsageResolved = false;
             syncedTextureParamsVersion = 0;
             syncedContentVersion = 0;
             syncedMipLevelCount = 0;
@@ -302,10 +267,6 @@ public:
     Bool Initialize(const InitInfo& initInfo);
     void Shutdown();
     void BeginFrame(Uint32 frameIndex);
-    // Drains every frame slot's deferred image/view releases. Only valid when
-    // the caller has proven every queue submission complete; used by the
-    // present-less frame-boundary drain.
-    void CollectAllDeferredReleases();
 
     TextureResource* SyncTextureAndGetDescriptor(
         MG_State::GLState::ITextureObject& texture);
@@ -324,36 +285,6 @@ public:
                                                       VkImageLayout newLayout);
     Bool TransitionTextureForSampling(VkCommandBuffer commandBuffer, MG_State::GLState::ITextureObject& texture);
     Bool TransitionTextureForStorageImage(VkCommandBuffer commandBuffer, MG_State::GLState::ITextureObject& texture);
-
-    // Recording-generation bookkeeping for the pre-pass command stream. The
-    // generation advances every time the frame command buffer (re)begins
-    // recording; a resource whose stamp does not match was not referenced by
-    // any command in the open recording, so its out-of-pass work may safely
-    // execute ahead of the whole recording (in the pre command buffer).
-    void AdvanceRecordingGeneration() { ++m_recordingGeneration; }
-    void StampResourceRecordingUse(TextureResource& resource) const {
-        resource.lastRecordingGeneration = m_recordingGeneration;
-    }
-    // Map-lookup variant for callers that only hold the GL texture object.
-    void StampTextureRecordingUse(MG_State::GLState::ITextureObject* texture);
-    Bool WasTouchedThisRecording(const TextureResource& resource) const {
-        return resource.lastRecordingGeneration == m_recordingGeneration;
-    }
-    // Records that this texture is bound to a GL image unit, so its image must carry
-    // VK_IMAGE_USAGE_STORAGE_BIT. Must be called before NeedsStorageImagePreparation, and
-    // therefore before the render pass is committed: an image that has to be upgraded is
-    // recreated, which is illegal inside a render pass. Sticky for the texture's lifetime -
-    // GL lets an image binding come and go, and re-creating the image every time it does
-    // would cost far more than the compression it wins back.
-    void MarkStorageImageTexture(MG_State::GLState::ITextureObject& texture);
-    // True when this texture is marked but its live image predates the mark, i.e. the next sync
-    // will recreate it with STORAGE usage and copy the old contents forward. Callers use this to
-    // submit their pending recording first, so that copy cannot read pre-flush content.
-    Bool NeedsStorageUsageUpgrade(MG_State::GLState::ITextureObject& texture) const;
-    // The same ordering question for the other recreate-and-preserve trigger: true when this
-    // texture's live image carries a shorter mip chain than a full one, so defining the missing
-    // levels recreates it and copies the old contents forward.
-    Bool NeedsMipChainGrowth(MG_State::GLState::ITextureObject& texture) const;
     // Non-mutating probe for the per-draw storage-image fast path: true when preparing this
     // texture as a storage image may need work that is illegal inside a render pass (resource
     // creation, dirty-content upload, or a layout transition to GENERAL). Unknown state reports
@@ -400,9 +331,6 @@ public:
 private:
     // Bumped in SyncTextureResource right after vmaCreateImage(texture). See GetTextureImageEpoch().
     Uint64 m_textureImageEpoch = 1;
-    // See AdvanceRecordingGeneration. Starts above every resource's default
-    // stamp of 0 so a fresh resource counts as untouched.
-    Uint64 m_recordingGeneration = 1;
 
     Bool SyncTexture(MG_State::GLState::ITextureObject &texture,
                      TextureResource &outResource);
@@ -433,28 +361,18 @@ private:
     void DeferViewRelease(VkImageView view);
     void CollectDeferredReleases(Uint32 frameIndex);
     void DestroyDeferredReleases();
-    // Frees the fence/command buffer/staging buffer of every in-flight texture
-    // upload whose fence has signaled (submission order = completion order on
-    // the single queue, so the scan stops at the first still-pending entry).
-    // waitAll blocks on every entry - Shutdown's drain.
-    void ReclaimCompletedUploads(Bool waitAll = false);
     static TextureIdentity MakeTextureIdentity(MG_State::GLState::ITextureObject* texture);
     void EraseTrackedTexture(const TextureIdentity& identity);
     void PruneStaleTextureAliases(MG_State::GLState::ITextureObject* texture);
-    SizeT PruneDeadTextures();
 
     VkDevice m_device = VK_NULL_HANDLE;
     VkPhysicalDevice m_physicalDevice = VK_NULL_HANDLE;
     VmaAllocator m_allocator = nullptr;
     VkCommandPool m_commandPool = VK_NULL_HANDLE;
     VkQueue m_graphicsQueue = VK_NULL_HANDLE;
-    Bool m_imageFormatListSupported = false;
     Uint32 m_currentFrameIndex = 0;
 
     Uint8 m_gcCounter = 0;
-    // Frame-boundary GC gate: counts BeginFrame calls, not draws, so texture churn
-    // through non-draw paths (FBO clears, readbacks) still reaches the prune.
-    Uint32 m_gcFrameCounter = 0;
     // Active only between BeginDrawSyncScope/EndDrawSyncScope; identities of
     // textures already fully synced in the current draw (small N -> flat scan).
     Bool m_drawSyncScopeActive = false;
@@ -467,49 +385,12 @@ private:
         TextureResource* resource = nullptr;
     };
     Vector<DrawSyncedTexture> m_drawSyncedThisDraw;
-    // Cross-draw sampled-texture memo: the same few textures (atlas, lightmap)
-    // are resolved on every draw, so cache their resource pointers and skip the
-    // alive/resource map lookups. Node-based std::unordered_map keeps the
-    // pointees stable across inserts; erases bump m_resourceEraseEpoch, which
-    // every memo entry must match. SyncTexture still runs on memo hits, so
-    // content/param freshness is unaffected. A dead-then-reused texture address
-    // cannot false-hit: the new object carries a new lifetime id.
-    struct SyncedTextureMemoEntry {
-        const MG_State::GLState::ITextureObject* texture = nullptr;
-        Uint64 lifetimeId = 0;
-        Uint64 eraseEpoch = 0;
-        TextureResource* resource = nullptr;
-    };
-    static constexpr Uint32 kSyncedTextureMemoSize = 8;
-    SyncedTextureMemoEntry m_syncedTextureMemo[kSyncedTextureMemoSize];
-    Uint32 m_syncedTextureMemoNext = 0;
-    Uint64 m_resourceEraseEpoch = 1;
     // Formats whose mutable-image probe failed on this device; their images are created
     // without MUTABLE_FORMAT_BIT so repeat syncs neither re-probe nor flag-mismatch.
     std::unordered_set<VkFormat> m_mutableFormatUnsupported;
-    // Formats whose 3D images refused VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT. Per format+usage,
-    // exactly like the mutable-format verdict above, so it is answered at image creation and
-    // remembered rather than probed once globally.
-    std::unordered_set<VkFormat> m_2dArrayCompatibleUnsupported;
     std::unordered_map<TextureIdentity, WeakPtr<MG_State::GLState::ITextureObject>, TextureIdentityHash> m_aliveObjects;
     std::unordered_map<TextureIdentity, TextureResource, TextureIdentityHash> m_textureResources;
-    // Textures that have been bound to a GL image unit (see MarkStorageImageTexture).
-    std::unordered_set<TextureIdentity, TextureIdentityHash> m_storageImageTextures;
-    // Supported multisample counts per format, so repeat texture syncs do not
-    // re-query vkGetPhysicalDeviceImageFormatProperties.
-    std::unordered_map<VkFormat, VkSampleCountFlags> m_multisampleCountsByFormat;
     Vector<Vector<TextureResource>> m_deferredReleases;
     Vector<Vector<VkImageView>> m_deferredViewReleases;
-    // Texture uploads are submitted out-of-band but NOT waited on (waiting
-    // behind the queue serialized the CPU against the previous frame's GPU
-    // work every time an animated atlas re-uploaded). Their transient objects
-    // are parked here and reclaimed once the upload fence signals.
-    struct PendingUploadReclaim {
-        VkFence fence = VK_NULL_HANDLE;
-        VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
-        VkBuffer stagingBuffer = VK_NULL_HANDLE;
-        VmaAllocation stagingAllocation = nullptr;
-    };
-    Vector<PendingUploadReclaim> m_pendingUploadReclaims;
 };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h

@@ -76,10 +76,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         GLenum indexType = GL_UNSIGNED_SHORT;
         SizeT indexByteOffset = 0;
         SizeT indexByteSize = 0;
-        // Interpret indexByteOffset as a raw client pointer even when an element
-        // array buffer is bound (backend-synthesized index lists, e.g. the
-        // GL_LINE_LOOP -> LINE_STRIP rewrite).
-        Bool forceClientMemory = false;
     };
 
     struct DrawIndexedCmd {
@@ -118,10 +114,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
     };
 
-    class VulkanRenderer : public IBufferCopyCommandProvider,
-                           public FrameContext::IRecordingObserver,
-                           public VkRenderPassManager::IEvictionObserver,
-                           public ProgramFactory::IEvictionObserver {
+    class VulkanRenderer : public IBufferCopyCommandProvider, public FrameContext::IRecordingObserver {
     public:
         VulkanRenderer(NativeWindowType window, const VulkanRendererConfig& cfg = {});
         ~VulkanRenderer();
@@ -138,31 +131,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // recording, before any render pass.
         void OnFrameCommandRecordingBegan(VkCommandBuffer commandBuffer) override;
 
-        // VkRenderPassManager::IEvictionObserver: the render-pass aging sweep just
-        // destroyed these VkRenderPasses; evict every graphics pipeline hashed on a
-        // dying handle (they share its >1024-boundary idleness, so immediate
-        // destruction is safe) and drop the last-pipeline memo if any went.
-        void OnRenderPassesDestroyed(const Vector<VkRenderPass>& renderPasses) override;
-
-        // ProgramFactory::IEvictionObserver: an aged-out program entry was
-        // destroyed; evict its compute pipeline and graphics pipelines (same
-        // idleness guarantee - they are only bound through draws/dispatches that
-        // stamp the program entry) and purge the descriptor-set cache entries
-        // keyed by its now-recyclable VkDescriptorSetLayout handle.
-        void OnProgramEvicted(ProgramFactory::HashType programHash,
-                              VkDescriptorSetLayout descriptorSetLayout) override;
-
         Bool SetupDraw(FrameContext::FrameData& frame, GLenum mode, Flags<DrawSetupAspect> aspects,
                        const DrawCmdParam& drawParams,
                        const IndexBufferView* pIndexBufferView = nullptr);
-        // ANGLE-style consecutive-draw fast path: SetupDraw snapshots the fully
-        // resolved draw configuration; the next draw whose cheap version/identity
-        // checks all match skips the resolution half (LOD probe, sampled-set
-        // walk, render-pass and pipeline resolution) and jumps straight to the
-        // per-draw tail. Returns false (leaving no side effects that the full
-        // path cannot redo idempotently) whenever anything might have changed.
-        Bool TrySetupDrawFastPath(FrameContext::FrameData& frame, GLenum mode, Flags<DrawSetupAspect> aspects,
-                                  const DrawCmdParam& drawParams, const IndexBufferView* pIndexBufferView);
         void ClearAttachmentsOnActiveRenderPass(VkCommandBuffer commandBuffer,
                                                 const RenderPassEntry& compatibleRenderPassEntry);
 
@@ -181,10 +152,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint* value);
         void ClearNamedFramebufferfv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
                                      GLenum buffer, GLint drawbuffer, const GLfloat* value);
-        void ClearNamedFramebufferiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
-                                     GLenum buffer, GLint drawbuffer, const GLint* value);
-        void ClearNamedFramebufferuiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
-                                      GLenum buffer, GLint drawbuffer, const GLuint* value);
         void ClearNamedFramebufferfi(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer,
                                      GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
         void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
@@ -204,25 +171,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                               GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth);
         void GenerateMipmap(GLenum target);
         void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
-        // GL_DEPTH_COMPONENT / GL_DEPTH_STENCIL / GL_STENCIL_INDEX readback from the
-        // read framebuffer's depth/stencil attachment (per-aspect buffer copies with
-        // CPU repacking into the requested client layout).
-        void ReadDepthStencilPixels(MG_State::GLState::FramebufferObject& readFbo, GLint x, GLint y, GLsizei width,
-                                    GLsizei height, GLenum format, GLenum type, void* pixels);
-        // Copy-and-repack core shared by depth-stencil ReadPixels and GetTexImage;
-        // expects command recording to be active and any render pass already ended.
-        void ReadDepthStencilImageToClient(VkImage image, VkFormat vkFormat, VkImageLayout* trackedLayout,
-                                           VkImageAspectFlags imageAspect, Uint32 mipLevel, Uint32 baseArrayLayer,
-                                           GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type,
-                                           void* pixels);
-        // Same-extent depth blit between images of different depth formats: host
-        // round-trip with a per-texel re-encode (see BlitNamedFramebuffer).
-        Bool BlitDepthAcrossFormats(FrameContext::FrameData& frame, VkImage srcImage, VkFormat srcFormat,
-                                    VkImageLayout* srcTrackedLayout, Uint32 srcMipLevel, Uint32 srcBaseArrayLayer,
-                                    VkImage dstImage, VkFormat dstFormat, VkImageLayout* dstTrackedLayout,
-                                    Uint32 dstMipLevel, Uint32 dstBaseArrayLayer, GLint srcX, GLint srcY, GLint dstX,
-                                    GLint dstY, GLint width, GLint height, VkImageLayout srcRestoreLayout,
-                                    VkImageLayout dstRestoreLayout, Bool stencilAspect);
         static SizeT GetReadbackTexelSize(VkFormat sourceFormat);
         static Bool ConvertReadbackPixels(const Uint8* sourcePixels, VkFormat sourceFormat,
                                           GLsizei width, GLsizei height, GLenum destinationFormat,
@@ -308,20 +256,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                       const VkTimerQueryManager::TimestampRecord& end) const;
         Uint64 GetTimerQueryTimestampNs(const VkTimerQueryManager::TimestampRecord& record) const;
 
-        // GL_SAMPLES_PASSED occlusion queries: every app draw between Start and Stop is
-        // wrapped in a Vulkan occlusion query slot; the result is the slot sum. Requires
-        // hostQueryReset for slot recycling - Start fails (frontend keeps the query
-        // unsupported) when the device lacks it.
-        Bool StartOcclusionQueryCapture();
-        void StopOcclusionQueryCapture(Vector<Uint32>& outSlots);
-        // Flushes pending commands, waits, sums the slots, and recycles them.
-        Bool ResolveOcclusionQueryResult(const Vector<Uint32>& slots, Uint64& outSamples);
-
         void RequestSwapchainResize(Uint32 width, Uint32 height);
-        // Re-query the surface and report whether the live swapchain no longer matches it
-        // (size or orientation). This - not a VK_SUBOPTIMAL_KHR result - is what decides a
-        // rebuild, so a surface the driver merely considers suboptimal cannot thrash.
-        Bool SwapchainIsOutOfDate();
         // Returns false when the surface is zero-area (minimized/hidden window):
         // no new swapchain is installed and presentation must stay suspended.
         Bool RecreateSwapchain();
@@ -410,40 +345,16 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkFence AcquirePooledSubmitFence();
         void DestroySubmitFencePool();
         Bool HasPendingRecordedWork() const;
-        // Frame-boundary housekeeping for paths that never reach Present's
-        // tail (present-less readback loops, suspended presentation, blocking
-        // sync waits): runs the same per-frame drains Present performs, but
-        // only when every queue submission has been observed complete AND no
-        // recorded-but-unsubmitted commands exist - i.e. when CPU-GPU overlap
-        // is provably already zero. Never blocks (non-blocking fence poll
-        // only), so the presenting path's frames-in-flight pipelining is
-        // untouched. Returns true when the drain ran.
-        Bool TryDrainFrameTransients();
 
         Vector<SubmitRecord> m_inFlightSubmits;
         Vector<VkFence> m_freeSubmitFences;
         Uint64 m_submitCounter = 0;
         Uint64 m_completedSubmitCounter = 0;
-        // Drains since the last Present, gating the drain's frame-boundary-equivalent
-        // work (arena rewind + cache aging): a presenting app's mid-frame
-        // readbacks/waits must neither churn the transient caches nor accelerate the
-        // aging clocks, while present-less loops still cross a boundary every few
-        // iterations. Reset in Present.
-        Uint32 m_drainsSinceLastPresent = 0;
 
         NativeWindowType m_window = 0;
         void* m_platformDisplay = nullptr;
         void* m_platformLibrary = nullptr;
         void* m_platformCloseDisplay = nullptr;
-        // Some real ICDs (e.g. NVIDIA's proprietary Linux driver) don't implement
-        // VK_EXT_headless_surface at all. Detected once in CreateInstance() from the
-        // enumerated instance extensions; when false, CreateSurface() falls back to a
-        // hidden Xlib window instead of vkCreateHeadlessSurfaceEXT.
-        Bool m_headlessSurfaceSupported = true;
-        // Set when CreateSurface() had to create its own Xlib window for the fallback
-        // above (rather than being handed one by the caller), so Shutdown() knows it
-        // owns that window and must destroy it.
-        Bool m_ownsFallbackXlibWindow = false;
         VulkanRendererConfig m_config;
         Bool m_swapchainResizeRequested = false;
         // Presentation is suspended while the window is zero-area (minimized): the
@@ -456,9 +367,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Vector<VkExtensionProperties> m_extensions;
         VkInstance m_instance = VK_NULL_HANDLE;
         VkDebugUtilsMessengerEXT m_debugMessenger = VK_NULL_HANDLE;
-        // Fallback reporting channel for drivers that ship the validation layers but
-        // only expose the older VK_EXT_debug_report (Adreno 650 / Vulkan 1.1.128).
-        VkDebugReportCallbackEXT m_debugReportCallback = VK_NULL_HANDLE;
         PhysicalDevice m_physicalDevice;
         VkDevice m_device = VK_NULL_HANDLE;
         VmaAllocator m_allocator = nullptr;
@@ -496,98 +404,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                                  Uint32 stride);
         static inline PFNDrawIndexedIndirectCountFunc s_vkCmdDrawIndexedIndirectCount = nullptr;
 
-        // VK_EXT_transform_feedback (GL transform feedback capture)
-        Bool m_transformFeedbackFeatureEnabled = false;
-        // VK_EXT_provoking_vertex. Vulkan's built-in convention is "provoking vertex first"; GL's
-        // default is LAST_VERTEX_CONVENTION, and GL derives BOTH flat shading and the transform
-        // feedback vertex order from it. provokingVertexLast alone fixes flat shading and the
-        // input-assembler capture order and has no dependency on transform feedback; only
-        // transformFeedbackPreservesProvokingVertex does.
-        Bool m_provokingVertexLastEnabled = false;
-        // transformFeedbackPreservesProvokingVertex was actually enabled at device creation. Kept
-        // separate because it is the only thing that arms
-        // VUID-VkGraphicsPipelineCreateInfo-topology-04884, the rule that forbids a TRIANGLE_FAN
-        // pipeline from asking for LAST on a device that cannot preserve a fan's provoking vertex.
-        Bool m_provokingVertexXfbPreserveEnabled = false;
-        // provokingVertexModePerPipeline: when VK_FALSE every pipeline in one render pass instance
-        // must agree on the mode, so glProvokingVertex(GL_FIRST_VERTEX_CONVENTION) cannot be honoured
-        // per draw and every pipeline takes GL's default (LAST) instead.
-        Bool m_provokingVertexModePerPipeline = false;
-        // transformFeedbackPreservesTriangleFanProvokingVertex.
-        Bool m_provokingVertexFanPreserved = false;
-        // Per-pipeline provoking-vertex mode. capturesXfbFromGeometryStage must be a LINK-TIME
-        // property of the program, never the dynamic "is transform feedback active" flag: the
-        // 8-entry m_pipelineMemo and the SetupDrawSnapshot fast path key on programObj.hash and
-        // GetRenderStateParametersVersion(), neither of which moves when glBeginTransformFeedback is
-        // called, so a dynamic input here would hand back a stale VkPipeline.
-        VkProvokingVertexModeEXT SelectProvokingVertexMode(VkPrimitiveTopology topology,
-                                                          Bool capturesXfbFromGeometryStage) const;
-        // VK_EXT_vertex_attribute_divisor: without it every non-zero glVertexAttribDivisor
-        // behaves as 1, because that is all Vulkan's instance input rate can express.
-        Bool m_vertexAttributeDivisorEnabled = false;
-        static inline PFN_vkCmdBindTransformFeedbackBuffersEXT s_vkCmdBindTransformFeedbackBuffersEXT = nullptr;
-        static inline PFN_vkCmdBeginTransformFeedbackEXT s_vkCmdBeginTransformFeedbackEXT = nullptr;
-        static inline PFN_vkCmdEndTransformFeedbackEXT s_vkCmdEndTransformFeedbackEXT = nullptr;
-        // Counter buffers (one 4-byte slot per capture binding) let consecutive
-        // draws within one glBeginTransformFeedback append GL-style. Transform feedback
-        // objects can each hold an open, paused span at the same time, so the counters are
-        // per object: one group of four slots each, handed out on first use.
-        static constexpr SizeT kXfbCounterObjectSlots = 16;
-        VkBufferObject m_xfbCounterBuffer;
-        UnorderedMap<Uint, Uint32> m_xfbCounterSlotByObject;
-        Uint32 m_xfbNextCounterSlot = 0;
-        // Set for a slot once a captured draw has been recorded into its span; selects
-        // counter-buffer resume on the next captured draw of the same span.
-        Array<Bool, kXfbCounterObjectSlots> m_xfbCountersValid{};
-        Array<Uint64, kXfbCounterObjectSlots> m_xfbLastSeenGeneration{};
-        // Counter slot group of the bound transform feedback object.
-        Uint32 CurrentXfbCounterSlot();
-        // Wraps a recorded draw with BeginTransformFeedbackEXT/EndTransformFeedbackEXT
-        // when GL transform feedback is active; binds capture buffers on demand.
-        Bool BeginXfbCaptureForDraw(FrameContext::FrameData& frame);
-        void EndXfbCaptureForDraw(FrameContext::FrameData& frame, Bool began);
-        // Makes the captured bytes visible to whatever reads them next. Deferred rather than
-        // recorded next to the capture, because the capturing draw runs inside a render pass
-        // that declares no self-dependency.
-        void MakeXfbWritesVisible();
-        Bool m_xfbWritesPendingVisibility = false;
-        // Wrap one app draw in an occlusion-query slot while a GL_SAMPLES_PASSED
-        // query is active. Returns whether a slot was begun (End must mirror it).
-        Bool BeginOcclusionForDraw(VkCommandBuffer commandBuffer);
-        void EndOcclusionForDraw(VkCommandBuffer commandBuffer, Bool began);
-        Bool m_occlusionQueryPreciseEnabled = false;
-        Bool m_hostQueryResetEnabled = false;
-        PFN_vkResetQueryPool s_vkResetQueryPool = nullptr;
-        VkQueryPool m_occlusionQueryPool = VK_NULL_HANDLE;
-        static constexpr Uint32 kOcclusionQuerySlots = 8192;
-        Uint32 m_occlusionSlotCursor = 0;
-        Bool m_occlusionCaptureActive = false;
-        Vector<Uint32> m_occlusionActiveSlots;
-        // Transform feedback primitive queries: one pool slot per captured draw yields
-        // the (written, needed) pair; GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN sums the
-        // first, GL_PRIMITIVES_GENERATED the second - exact with geometry shaders,
-        // unlike the CPU fallback accounting.
-        Bool m_xfbQueriesSupported = false;
-        PFN_vkCmdBeginQueryIndexedEXT s_vkCmdBeginQueryIndexedEXT = nullptr;
-        PFN_vkCmdEndQueryIndexedEXT s_vkCmdEndQueryIndexedEXT = nullptr;
-        VkQueryPool m_xfbQueryPool = VK_NULL_HANDLE;
-        static constexpr Uint32 kXfbQuerySlots = 8192;
-        Uint32 m_xfbQuerySlotCursor = 0;
-        Bool m_xfbQueryCaptureActive[2] = {false, false}; // [0]=written, [1]=generated
-        Vector<Uint32> m_xfbQueryActiveSlots[2];
-        Bool m_xfbQuerySlotOpen = false;
-        Uint32 m_xfbQueryOpenSlot = 0;
-
-    public:
-        // kind: 0 = PRIMITIVES_WRITTEN, 1 = PRIMITIVES_GENERATED.
-        Bool StartXfbQueryCapture(Uint32 kind);
-        void StopXfbQueryCapture(Uint32 kind, Vector<Uint32>& outSlots);
-        Bool ResolveXfbQueryResult(const Vector<Uint32>& slots, Bool wantGenerated, Uint64& outPrimitives);
-
-    private:
-        void BeginXfbQueryForDraw(VkCommandBuffer commandBuffer);
-        void EndXfbQueryForDraw(VkCommandBuffer commandBuffer);
-
         VkCommandPool m_commandPool = VK_NULL_HANDLE;
 
         VkBufferManager m_bufferManager;
@@ -600,30 +416,14 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         // gather + synthetic vertex-input rebuild + payload hash + lookup) when the full pipeline
         // state is unchanged from the previous draw. The key provably covers every pipeline field.
         // Reset per-frame and on pipeline destruction so the cached handle can never dangle.
-        // Small N-way pipeline-resolution memo (round-robin replacement). A
-        // single-entry memo thrashed on draw sequences that alternate a few
-        // pipelines (GUI text/quad program ping-pong), paying the full
-        // payload-hash lookup per draw; eight entries cover such working sets
-        // while keeping the hit path a trivial linear scan.
-        struct PipelineMemoEntry {
-            GLenum mode = 0;
-            Uint64 programHash = 0;
-            Uint64 vertexInputHash = 0;
-            Uint64 renderPassHash = 0;
-            Uint renderStateVersion = 0;
-            ProgramFactory::CompileOptionFlags transformFlags = {};
-            VkPipeline pipeline = VK_NULL_HANDLE;
-        };
-        static constexpr Uint32 kPipelineMemoSize = 8;
-        PipelineMemoEntry m_pipelineMemo[kPipelineMemoSize];
-        Uint32 m_pipelineMemoCount = 0;
-        Uint32 m_pipelineMemoNext = 0;
-        // Drops every memoized pipeline handle. Required at command-buffer
-        // boundaries and whenever any pipeline may have been destroyed.
-        void InvalidatePipelineMemo() {
-            m_pipelineMemoCount = 0;
-            m_pipelineMemoNext = 0;
-        }
+        Bool m_lastPipelineValid = false;
+        GLenum m_lastPipelineMode = 0;
+        Uint64 m_lastPipelineProgramHash = 0;
+        Uint64 m_lastPipelineVertexInputHash = 0;
+        Uint64 m_lastPipelineRenderPassHash = 0;
+        Uint m_lastPipelineRenderStateVersion = 0;
+        ProgramFactory::CompileOptionFlags m_lastPipelineTransformFlags = {};
+        VkPipeline m_lastPipelineResult = VK_NULL_HANDLE;
         UnorderedMap<ProgramFactory::HashType, VkPipeline> m_computePipelines;
         UniquePtr<ProgramFactory> m_programFactory;
         UniquePtr<UniformManager> m_uniformManager;
@@ -652,61 +452,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         ProgramFactory::CompileOptionFlags m_lastSampledSetTransformFlags = {};
         Uint64 m_lastSampledSetBindGeneration = 0;
 
-        // Memo for the per-draw explicit-LOD-0 eligibility probe
-        // (ProgramSamplesOnlySingleLevelTextures): same key family as the
-        // sampled-set memo, plus the sampled textures' params-version sum so a
-        // level-range or filter change re-probes. On a hit the resolved
-        // transform flags are reused, which also collapses the two
-        // GetOrCreateProgram lookups into one.
-        Bool m_lastLodDecisionValid = false;
-        Uint64 m_lastLodProgramLifetimeId = 0;
-        Uint32 m_lastLodProgramVersion = 0;
-        Uint64 m_lastLodBindGeneration = 0;
-        Uint64 m_lastLodParamsSum = 0;
-        ProgramFactory::CompileOptionFlags m_lastLodBaseFlags = {};
-        ProgramFactory::CompileOptionFlags m_lastLodResultFlags = {};
-
-        // Snapshot behind TrySetupDrawFastPath. Values only: the program and
-        // render-pass caches are open-addressing maps whose entries move on
-        // insert, so no pointers into them are cached; the pipeline handle is
-        // protected by the command-buffer-boundary reset plus the mid-frame
-        // pipeline-destruction resets, and monotonic epochs guard everything
-        // that can be destroyed or recreated between draws.
-        struct SetupDrawSnapshot {
-            Bool valid = false;
-            Uint8 aspects = 0;
-            GLenum mode = 0;
-            Uint64 programLifetimeId = 0;
-            Uint32 programVersion = 0;
-            const void* vao = nullptr;
-            Uint32 vaoConfigVersion = 0;
-            const void* drawFbo = nullptr;
-            Uint16 fboVersion = 0;
-            Bool drawFboIsDefault = false;
-            Uint renderStateVersion = 0;
-            Uint64 bindGeneration = 0;
-            Uint32 baseTransformFlags = 0;
-            Uint32 resolvedTransformFlags = 0;
-            Uint64 renderPassHash = 0;
-            Uint32 imageIndex = 0;
-            Uint64 textureEraseEpoch = 0;
-            Uint64 textureImageEpoch = 0;
-            Uint64 renderbufferImageEpoch = 0;
-            Uint64 sampledContentSum = 0;
-            Uint64 sampledParamsSum = 0;
-            IntVec2 renderPassExtent = {0, 0};
-            VkPipeline pipeline = VK_NULL_HANDLE;
-        };
-        SetupDrawSnapshot m_setupDrawSnapshot;
-
         // Per-draw scratch buffers (clear keeps capacity) — these paths run for every
         // draw call and must not allocate.
         Vector<MG_State::GLState::ITextureObject*> m_sampledTexturesScratch;
-        // Parallel to m_sampledTexturesScratch, refilled by every SetupDraw's
-        // first sampled-texture loop: the resolved backend resources, so the
-        // post-transition loop can skip re-resolving textures whose layout is
-        // already sampleable.
-        Vector<VkTextureManager::TextureResource*> m_sampledResourcesScratch;
         Vector<MG_State::GLState::ITextureObject*> m_storageImageTexturesScratch;
         Vector<VkBuffer> m_vertexBuffersScratch;
         Vector<VkDeviceSize> m_vertexOffsetsScratch;
@@ -769,8 +517,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void CreateInstance();
         VkResult SetupDebugMessenger();
         VkResult DestroyDebugMessenger();
-        VkResult SetupDebugReportCallback();
-        void DestroyDebugReportCallback();
         VkDebugUtilsMessengerCreateInfoEXT PopulateDebugMessengerCreateInfo();
         void CreateSurface();
         void PickPhysicalDevice();
@@ -789,10 +535,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             const RenderPassEntry& renderPassEntry);
         VkPipeline GetOrCreateComputePipeline(const ProgramFactory::VkProgramObject& programObj);
         void DestroyComputePipelines();
-        // Takes the frame rather than a command buffer: a first-time storage-usage upgrade has to
-        // flush the pending recording (see the body), which retires the current command buffer.
         Bool PrepareStorageImageTextures(
-            FrameContext::FrameData& frame,
+            VkCommandBuffer commandBuffer,
             const MG_State::GLState::ProgramObject& program,
             const ProgramFactory::VkProgramObject& programObj);
 
@@ -815,11 +559,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                    GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
                                                    GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
                                                    GLenum filter);
-        // Clears one z slice of a VK_IMAGE_TYPE_3D colour image. See the call site in
-        // MaterializePendingClearForTexture for why a transfer clear cannot do this.
-        Bool ClearDepthSliceWithRenderPass(VkCommandBuffer commandBuffer,
-                                           MG_State::GLState::ITextureObject& texture, Uint32 mipLevel,
-                                           Uint32 depthSlice, const VkClearValue& clearValue);
         Bool MaterializePendingClearForTexture(VkCommandBuffer commandBuffer,
                                                MG_State::GLState::ITextureObject& texture);
         Bool MaterializePendingClearForRenderbuffer(
@@ -836,14 +575,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                            VkImageLayout finalLayout);
         Bool SubmitReadbackCommandsAndWait(FrameContext::FrameData& frame);
 
-    public:
-        // Submits whatever is recorded and waits for it. The CPU is about to read memory
-        // a shader wrote (a mapped shader storage buffer), and coherent host-visible
-        // storage only guarantees visibility once the work that produced it has retired.
-        Bool FinishPendingGpuWork();
-
-    private:
-
         void ShutdownSwapchain();
 
         // Static functions
@@ -867,10 +598,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                  const PhysicalDevice& compareWithDevice,
                                                  PhysicalDevice& outBetterDevice);
         static constexpr const char* s_validationLayerNames[] = {"VK_LAYER_KHRONOS_validation"};
-        // VK_KHR_image_format_list: lets MUTABLE_FORMAT images declare their exact view-format
-        // set so the driver can keep bandwidth compression (see CreateLogicalDeviceAndQueues).
-        Bool m_imageFormatListExtensionEnabled = false;
-
         static constexpr const char* s_deviceExtensionNames[] = {VK_KHR_SWAPCHAIN_EXTENSION_NAME};
         static Bool CheckValidationLayerSupport();
 

MobileGL/MG_Backend/DirectVulkan/VkIncludes.h

@@ -52,48 +52,19 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     }
 } // namespace MobileGL::MG_Backend::DirectVulkan
 
-namespace MobileGL::MG_Backend::DirectVulkan {
-    // GL renders into sRGB color attachments RAW while GL_FRAMEBUFFER_SRGB is disabled
-    // (the core-profile default); Vulkan sRGB attachments always encode on write. The
-    // attachment view (and render pass format) therefore drops to the UNORM twin
-    // whenever the capability is off. Sampled views keep the sRGB format (decode on
-    // sample is unconditional in GL).
-    inline VkFormat ResolveSrgbAttachmentWriteFormat(VkFormat format, bool framebufferSrgbEnabled) {
-        if (framebufferSrgbEnabled) return format;
-        switch (format) {
-        case VK_FORMAT_R8G8B8A8_SRGB:
-            return VK_FORMAT_R8G8B8A8_UNORM;
-        case VK_FORMAT_B8G8R8A8_SRGB:
-            return VK_FORMAT_B8G8R8A8_UNORM;
-        default:
-            return format;
-        }
-    }
-} // namespace MobileGL::MG_Backend::DirectVulkan
-
-// The context line (__VA_ARGS__ = its own format string + args) must be a SEPARATE log
-// call: appending its format to the base format while its arguments precede the base
-// arguments makes every conversion read the wrong slot (a %s pulling an int crashes).
 #define VK_VERIFY(expr, ...)                                                                                           \
     do {                                                                                                               \
         VkResult _vk_verify_result = (expr);                                                                           \
         if (_vk_verify_result != VK_SUCCESS) {                                                                         \
-            __VA_OPT__(MGLOG_F(__VA_ARGS__);)                                                                          \
-            MGLOG_F("Vulkan error %s (%d) at %s:%d",                                                                   \
+            MGLOG_F("Vulkan error %s (%d) at %s:%d" __VA_OPT__(" - ") __VA_ARGS__,                                  \
                     MobileGL::MG_Backend::DirectVulkan::VkResultToString(_vk_verify_result),                          \
                     _vk_verify_result, __FILE__, __LINE__);                                                            \
         }                                                                                                              \
-        MOBILEGL_ASSERT(_vk_verify_result == VK_SUCCESS, "Vulkan error %s (%d) at %s:%d",                              \
-                        MobileGL::MG_Backend::DirectVulkan::VkResultToString(_vk_verify_result),                       \
-                        _vk_verify_result, __FILE__, __LINE__);                                                        \
+        MOBILEGL_ASSERT(_vk_verify_result == VK_SUCCESS, "Vulkan error %s (%d) at %s:%d" __VA_OPT__(" - ") __VA_ARGS__, MobileGL::MG_Backend::DirectVulkan::VkResultToString(_vk_verify_result), _vk_verify_result, __FILE__, __LINE__);  \
     } while (0)
 
 #define XXHASH_VERIFY(expr, ...)                                                                                       \
     do {                                                                                                               \
         XXH_errorcode _xxh_verify_result = (expr);                                                                     \
-        if (_xxh_verify_result != XXH_OK) {                                                                            \
-            __VA_OPT__(MGLOG_F(__VA_ARGS__);)                                                                          \
-        }                                                                                                              \
-        MOBILEGL_ASSERT(_xxh_verify_result == XXH_OK, "XXHash error %d at %s:%d", _xxh_verify_result, __FILE__,        \
-                        __LINE__);                                                                                     \
+        MOBILEGL_ASSERT(_xxh_verify_result == XXH_OK, "XXHash error %d at %s:%d" __VA_OPT__(" - ") __VA_ARGS__, _xxh_verify_result, __FILE__, __LINE__);  \
     } while (0)

MobileGL/MG_Impl/CGLImpl/CGLImpl.cpp

@@ -24,7 +24,6 @@ namespace MobileGL::MG_Impl::CGLImpl {
             GLint Samples = 0;
             GLint Profile = kCGLOGLPVersion_3_2_Core;
             GLint RendererId = 0x4d474c;
-            GLint DisplayMask = 0;
         };
 
         struct ContextObject {
@@ -135,9 +134,6 @@ namespace MobileGL::MG_Impl::CGLImpl {
             case kCGLPFARendererID:
                 pixelFormat.RendererId = value;
                 break;
-            case kCGLPFADisplayMask:
-                pixelFormat.DisplayMask = value;
-                break;
             default:
                 break;
             }
@@ -347,9 +343,6 @@ namespace MobileGL::MG_Impl::CGLImpl {
         case kCGLPFARendererID:
             *value = pixelFormat->RendererId;
             return kCGLNoError;
-        case kCGLPFADisplayMask:
-            *value = pixelFormat->DisplayMask;
-            return kCGLNoError;
         case kCGLPFAOpenGLProfile:
             *value = pixelFormat->Profile;
             return kCGLNoError;
@@ -488,32 +481,6 @@ namespace MobileGL::MG_Impl::CGLImpl {
         return it == currentContexts.end() ? nullptr : it->second;
     }
 
-    CGLError SetVirtualScreen(CGLContextObj ctx, GLint screen) {
-        const std::lock_guard<std::recursive_mutex> lock(RegistryMutex());
-        auto* object = TryGetContext(ctx);
-        if (!object) {
-            return kCGLBadContext;
-        }
-        if (screen != 0) {
-            return kCGLBadValue;
-        }
-        object->VirtualScreen = screen;
-        return kCGLNoError;
-    }
-
-    CGLError GetVirtualScreen(CGLContextObj ctx, GLint* screen) {
-        const std::lock_guard<std::recursive_mutex> lock(RegistryMutex());
-        auto* object = TryGetContext(ctx);
-        if (!object) {
-            return kCGLBadContext;
-        }
-        if (!screen) {
-            return kCGLBadAddress;
-        }
-        *screen = object->VirtualScreen;
-        return kCGLNoError;
-    }
-
     CGLError SetParameter(CGLContextObj ctx, CGLContextParameter pname, const GLint* params) {
         const std::lock_guard<std::recursive_mutex> lock(RegistryMutex());
         auto* object = TryGetContext(ctx);

MobileGL/MG_Impl/CGLImpl/CGLImpl.h

@@ -32,8 +32,6 @@ namespace MobileGL::MG_Impl::CGLImpl {
 
     CGLError SetCurrentContext(CGLContextObj ctx);
     CGLContextObj GetCurrentContext();
-    CGLError SetVirtualScreen(CGLContextObj ctx, GLint screen);
-    CGLError GetVirtualScreen(CGLContextObj ctx, GLint* screen);
     CGLError SetParameter(CGLContextObj ctx, CGLContextParameter pname, const GLint* params);
     CGLError GetParameter(CGLContextObj ctx, CGLContextParameter pname, GLint* params);
     CGLError UpdateContext(CGLContextObj ctx);

MobileGL/MG_Impl/CGLImpl/Exporting/Definitions.cpp

@@ -71,14 +71,6 @@ MOBILEGL_CGL_API CGLContextObj CGLGetCurrentContext(void) {
     return MobileGL::MG_Impl::CGLImpl::GetCurrentContext();
 }
 
-MOBILEGL_CGL_API CGLError CGLSetVirtualScreen(CGLContextObj ctx, GLint screen) {
-    return MobileGL::MG_Impl::CGLImpl::SetVirtualScreen(ctx, screen);
-}
-
-MOBILEGL_CGL_API CGLError CGLGetVirtualScreen(CGLContextObj ctx, GLint* screen) {
-    return MobileGL::MG_Impl::CGLImpl::GetVirtualScreen(ctx, screen);
-}
-
 MOBILEGL_CGL_API CGLError CGLSetParameter(CGLContextObj ctx, CGLContextParameter pname, const GLint* params) {
     return MobileGL::MG_Impl::CGLImpl::SetParameter(ctx, pname, params);
 }

MobileGL/MG_Impl/DyldInterpose/DyldInterpose.cpp

@@ -10,12 +10,8 @@
 
 #if defined(__APPLE__)
 
-#include "MG_Impl/CGLImpl/CGLImpl.h"
 #include "MG_Impl/GetProcAddress.h"
 
-#include <CoreGraphics/CoreGraphics.h>
-#include <CoreVideo/CVDisplayLink.h>
-#include <cstdint>
 #include <dlfcn.h>
 
 namespace {
@@ -51,52 +47,10 @@ namespace {
         return dlsym(handle, symbol);
     }
 
-    CGDirectDisplayID DisplayForMask(GLint displayMask) {
-        constexpr std::uint32_t MaxDisplays = sizeof(CGOpenGLDisplayMask) * 8;
-        CGDirectDisplayID displays[MaxDisplays] = {};
-        std::uint32_t displayCount = 0;
-        if (displayMask != 0 &&
-            CGGetActiveDisplayList(MaxDisplays, displays, &displayCount) == kCGErrorSuccess) {
-            const auto mask = static_cast<CGOpenGLDisplayMask>(displayMask);
-            for (std::uint32_t i = 0; i < displayCount; ++i) {
-                if ((CGDisplayIDToOpenGLDisplayMask(displays[i]) & mask) != 0) {
-                    return displays[i];
-                }
-            }
-        }
-        return CGMainDisplayID();
-    }
-
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-    CVReturn MobileGLCVDisplayLinkSetCurrentCGDisplayFromOpenGLContext(
-        CVDisplayLinkRef displayLink,
-        CGLContextObj context,
-        CGLPixelFormatObj pixelFormat) {
-        GLint virtualScreen = 0;
-        if (MobileGL::MG_Impl::CGLImpl::GetVirtualScreen(context, &virtualScreen) == kCGLNoError) {
-            GLint displayMask = 0;
-            if (!displayLink ||
-                MobileGL::MG_Impl::CGLImpl::DescribePixelFormat(
-                    pixelFormat, virtualScreen, kCGLPFADisplayMask, &displayMask) != kCGLNoError) {
-                return kCVReturnInvalidArgument;
-            }
-            return CVDisplayLinkSetCurrentCGDisplay(displayLink, DisplayForMask(displayMask));
-        }
-
-        using OriginalFunction = CVReturn (*)(CVDisplayLinkRef, CGLContextObj, CGLPixelFormatObj);
-        static const auto original = reinterpret_cast<OriginalFunction>(
-            dlsym(RTLD_NEXT, "CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext"));
-        return original ? original(displayLink, context, pixelFormat) : kCVReturnError;
-    }
-
     __attribute__((used)) static const DyldInterposeEntry kMobileGLDyldInterpose[]
         __attribute__((section("__DATA,__interpose"))) = {
             {reinterpret_cast<const void*>(MobileGLDlsym), reinterpret_cast<const void*>(dlsym)},
-            {reinterpret_cast<const void*>(MobileGLCVDisplayLinkSetCurrentCGDisplayFromOpenGLContext),
-             reinterpret_cast<const void*>(CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext)},
         };
-#pragma clang diagnostic pop
 } // namespace
 
 #endif

MobileGL/MG_Impl/DyldInterpose/ExportedSymbols.txt

@@ -1,10 +0,0 @@
-# Public CGL entry points.
-_CGL*
-
-# Public EGL entry points.
-_egl*
-
-# Public OpenGL and GLX entry points. OpenGL function names always use an
-# uppercase letter or digit after the "gl" prefix; excluding lowercase here
-# deliberately prevents glslang_* from matching this pattern.
-_gl[A-Z0-9]*

MobileGL/MG_Impl/GLImpl/Buffer/GL_Buffer.cpp

@@ -8,9 +8,6 @@
 
 #include "GL_Buffer.h"
 #include "Validators.h"
-#include "../Texture/GL_Texture.h"
-#include <MG_Util/Converters/GLToMG/TextureEnumConverter.h>
-#include <MG_Util/Metrics/TextureMetrics.h>
 #include <Config.h>
 #include <MG_State/GLState/Core.h>
 #include <MG_State/GLState/ErrorState/Error.h>
@@ -41,7 +38,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             GetNamedBufferParameteriv,
             GetNamedBufferParameteri64v,
             GetNamedBufferPointerv,
-            GetNamedBufferSubData,
         };
 
         const char* GetBufferOpName(BufferOp op) {
@@ -80,8 +76,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                 return "UnmapNamedBuffer";
             case BufferOp::FlushMappedNamedBufferRange:
                 return "FlushMappedNamedBufferRange";
-            case BufferOp::GetNamedBufferSubData:
-                return "GetNamedBufferSubData";
             case BufferOp::GetNamedBufferParameteriv:
                 return "GetNamedBufferParameteriv";
             case BufferOp::GetNamedBufferParameteri64v:
@@ -95,64 +89,25 @@ namespace MobileGL::MG_Impl::GLImpl {
 
         SharedPtr<MG_State::GLState::BufferObject> GetNamedBufferObject(GLuint buffer, BufferOp op);
 
-        // The size of one cleared element, which is what offset and size must be multiples of
-        // (GL 4.6 core 6.3). `internalformat` is restricted to the buffer-texture format table, and
-        // `format`/`type` describe the client-side pattern, so both are validated here and the
-        // caller only has to know how wide an element is.
         SizeT GetClearPatternSize(GLenum internalformat, GLenum format, GLenum type, BufferOp op) {
-            if (!IsBufferTextureInternalFormat(internalformat)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", GetBufferOpName(op),
-                        std::format("internalformat 0x{:X} is not one of the sized formats a buffer clear accepts.",
-                                    internalformat)));
-                return 0;
-            }
-
-            // Unlike internalformat, a bad format or type here is INVALID_VALUE rather than
-            // INVALID_ENUM (GL 4.6 core 6.3) - the odd one out among the enum arguments.
-            const TextureInputFormat inputFormat = MG_Util::ConvertGLEnumToTextureInputFormat(format);
-            if (inputFormat == TextureInputFormat::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", GetBufferOpName(op),
-                                                 std::format("format 0x{:X} is not a pixel format.", format)));
-                return 0;
-            }
-
-            const TexturePixelDataType pixelType = MG_Util::ConvertGLEnumToTexturePixelDataType(type);
-            if (pixelType == TexturePixelDataType::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", GetBufferOpName(op),
-                                                 std::format("type 0x{:X} is not a pixel type.", type)));
-                return 0;
-            }
-
-            const TextureInternalFormat internal =
-                MG_Util::ConvertGLEnumToTextureInternalFormat(internalformat);
-            const SizeT elementSize = MG_Util::GetSizedInternalFormatSizeInBytes(internal);
-            if (elementSize == 0) {
+            if (format != GL_RED_INTEGER) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidEnum,
                     MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", GetBufferOpName(op),
-                                                 std::format("internalformat 0x{:X} has no known element size.",
-                                                             internalformat)));
+                                                 "Only GL_RED_INTEGER buffer clears are currently supported."));
                 return 0;
             }
 
-            // The pattern is replicated verbatim, which is only the whole story while the client
-            // layout already matches the internal format - the case every entry point in practice
-            // uses, and the only one the conversion machinery here can express. Say so rather than
-            // quietly writing a differently-sized pattern.
-            const SizeT sourceSize = MG_Util::GetInputBytesPerPixel(inputFormat, pixelType);
-            if (sourceSize != elementSize) {
-                MGLOG_W("%s: clear pattern is %zu bytes but internalformat 0x%X stores %zu; "
-                        "converting between them is not implemented",
-                        GetBufferOpName(op), sourceSize, internalformat, elementSize);
-            }
-            return elementSize;
+            if (internalformat == GL_R8UI && type == GL_UNSIGNED_BYTE) return sizeof(GLubyte);
+            if (internalformat == GL_R32UI && type == GL_UNSIGNED_INT) return sizeof(GLuint);
+
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", GetBufferOpName(op),
+                                             std::format("Unsupported clear format tuple: internalformat=0x{:X}, "
+                                                         "format=0x{:X}, type=0x{:X}",
+                                                         internalformat, format, type)));
+            return 0;
         }
 
         Bool ValidateBufferClearRange(const SharedPtr<MG_State::GLState::BufferObject>& bufferObject, GLintptr offset,
@@ -375,21 +330,12 @@ namespace MobileGL::MG_Impl::GLImpl {
                     } else if (access & BufferMappingAccessBit::Write) {
                         *params = GL_WRITE_ONLY;
                     } else {
-                        *params = GL_READ_WRITE;
+                        *params = 0;
                     }
                 } else {
-                    // Initial value, and what glUnmapBuffer restores (GL 4.6 core table 6.2).
-                    *params = GL_READ_WRITE;
+                    *params = 0;
                 }
                 break;
-            case GL_BUFFER_ACCESS_FLAGS:
-                // The MapBufferRange flags verbatim; glMapBuffer's access enum has already been
-                // normalised into the same bits. Zero while the buffer is not mapped.
-                *params = bufferObject->IsMapped()
-                    ? static_cast<GLint>(
-                          MG_Util::ConvertBufferMappingAccessToGLEnum(bufferObject->GetMappingAccess()))
-                    : 0;
-                break;
             case GL_BUFFER_MAPPED:
                 *params = bufferObject->IsMapped() ? GL_TRUE : GL_FALSE;
                 break;
@@ -932,45 +878,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             return;
         }
 
-        bufferObject->SyncGpuWrites();
-        bufferObject->DownloadSubData(data, static_cast<SizeT>(offset), static_cast<SizeT>(size));
-    }
-
-    void GetNamedBufferSubData_State(GLuint buffer, GLintptr offset, GLsizeiptr size, void* data) {
-        if (!data) {
-            // Match GetBufferSubData_State: a null pointer is a caller bug, not a GL-specified error.
-            return;
-        }
-
-        if (size < 0 || offset < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetNamedBufferSubData_State",
-                                             "Offset and size must be non-negative."));
-            return;
-        }
-
-        auto bufferObject = GetNamedBufferObject(buffer, BufferOp::GetNamedBufferSubData);
-        if (!bufferObject) return;
-
-        if (static_cast<SizeT>(offset) + static_cast<SizeT>(size) > bufferObject->GetSize()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetNamedBufferSubData_State",
-                                             "Offset and size exceed buffer size."));
-            return;
-        }
-
-        if (bufferObject->IsMapped() &&
-            !(bufferObject->GetMappingAccess() & BufferMappingAccessBit::Persistent)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetNamedBufferSubData_State",
-                                             "Cannot read from a buffer object mapped without GL_MAP_PERSISTENT_BIT."));
-            return;
-        }
-
-        bufferObject->SyncGpuWrites();
         bufferObject->DownloadSubData(data, static_cast<SizeT>(offset), static_cast<SizeT>(size));
     }
 
@@ -1444,14 +1351,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         BufferTarget bufferTarget = MG_Util::ConvertGLEnumToBufferTarget(target);
         if (!BufferImpl::ValidateBufferBindingPointTarget(bufferTarget)) return;
         if (!BufferImpl::ValidateBufferBindingPointIndex(bufferTarget, pointIndex)) return;
-        if (bufferTarget == BufferTarget::TransformFeedback && MG_State::pGLContext->IsTransformFeedbackActive()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "Transform feedback buffer bindings cannot change while transform "
-                                             "feedback is active."));
-            return;
-        }
         MG_State::pGLContext->TouchBufferBindingPoint(bufferTarget, pointIndex);
 
         auto& point = MG_State::pGLContext->GetBufferBindingPoint(bufferTarget, pointIndex);
@@ -1459,7 +1358,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (buffer == 0) {
             point.Bind(nullptr);
             point.SetRange(Range1D(0, 0));
-            GetBufferBindingSlot(bufferTarget).Bind(nullptr);
             return;
         }
 
@@ -1478,12 +1376,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         } else {
             point.ClearRange();
         }
-        // The indexed bind also binds to the generic binding point of the same target
-        // (GL 4.6 core 6.1.1). Callers rely on it: the texture_gather tests set up their
-        // SSBO with BindBufferBase and then size it through glBufferData on the generic
-        // target alone, which would otherwise raise GL_INVALID_OPERATION and leave the
-        // buffer with no storage.
-        GetBufferBindingSlot(bufferTarget).Bind(bufferObject);
     }
 
     void BindBufferRange_State(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size) {
@@ -1492,14 +1384,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         BufferTarget bufferTarget = MG_Util::ConvertGLEnumToBufferTarget(target);
         if (!BufferImpl::ValidateBufferBindingPointTarget(bufferTarget)) return;
         if (!BufferImpl::ValidateBufferBindingPointIndex(bufferTarget, index)) return;
-        if (bufferTarget == BufferTarget::TransformFeedback && MG_State::pGLContext->IsTransformFeedbackActive()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "Transform feedback buffer bindings cannot change while transform "
-                                             "feedback is active."));
-            return;
-        }
         MG_State::pGLContext->TouchBufferBindingPoint(bufferTarget, index);
 
         auto& point = MG_State::pGLContext->GetBufferBindingPoint(bufferTarget, index);
@@ -1507,7 +1391,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (buffer == 0) {
             point.Bind(nullptr);
             point.SetRange(Range1D(0, 0));
-            GetBufferBindingSlot(bufferTarget).Bind(nullptr);
             return;
         }
 
@@ -1525,8 +1408,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         } else {
             point.ClearRange();
         }
-        // Also the generic binding point, exactly as BindBufferBase (GL 4.6 core 6.1.1).
-        GetBufferBindingSlot(bufferTarget).Bind(bufferObject);
     }
 
     /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
@@ -1636,10 +1517,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         BufferSubData_State(target, offset, size, data);
     }
 
-    void GetNamedBufferSubData(GLuint buffer, GLintptr offset, GLsizeiptr size, void* data) {
-        GetNamedBufferSubData_State(buffer, offset, size, data);
-    }
-
     void GetBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, void* data) {
         GetBufferSubData_State(target, offset, size, data);
     }

MobileGL/MG_Impl/GLImpl/Buffer/GL_Buffer.h

@@ -41,7 +41,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                            GLsizeiptr size);
     void BufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const void* data);
     void GetBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, void* data);
-    void GetNamedBufferSubData(GLuint buffer, GLintptr offset, GLsizeiptr size, void* data);
     void BufferData(GLenum target, GLsizeiptr size, const void* data, GLenum usage);
     void BindBuffer(GLenum target, GLuint buffer);
     void GenBuffers(GLsizei n, GLuint* buffers);

MobileGL/MG_Impl/GLImpl/Buffer/Validators.cpp

@@ -60,11 +60,6 @@ namespace MobileGL::MG_Impl::GLImpl::BufferImpl {
                 MG_Backend::pActiveBackendObject->GetDynamicParameters().MaxShaderStorageBufferBindings;
             pointCount = std::min(pointCount, static_cast<SizeT>(std::max(backendCount, 0)));
         }
-        if (target == BufferTarget::TransformFeedback) {
-            // GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS bounds the indexed capture
-            // binding points in GL 3.3 (no ARB_transform_feedback3).
-            pointCount = std::min<SizeT>(pointCount, 4);
-        }
 
         if (index < pointCount) {
             return true;
@@ -112,10 +107,14 @@ namespace MobileGL::MG_Impl::GLImpl::BufferImpl {
     }
 
     Bool ValidateBufferMappingAccess(Flags<BufferMappingAccessBit> accessBits) {
-        // An empty mask is a legal value for a bitfield - it just fails the rule that a mapping
-        // must ask for read or write access, which is INVALID_OPERATION and belongs to the callers
-        // (both of them check it immediately after this). Rejecting it here as INVALID_ENUM
-        // reported the wrong error and hid theirs.
+        if (accessBits == BufferMappingAccessBit::Null) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl",
+                                                                           "ValidateBufferMappingAccess",
+                                                                           "Access bits cannot be null."));
+            return false;
+        }
+
         const auto validBits = BufferMappingAccessBit::Read | BufferMappingAccessBit::Write |
                                BufferMappingAccessBit::InvalidateRange | BufferMappingAccessBit::InvalidateBuffer |
                                BufferMappingAccessBit::FlushExplicit | BufferMappingAccessBit::Unsynchronized |

MobileGL/MG_Impl/GLImpl/Drawing/GL_Drawing.cpp

@@ -11,11 +11,10 @@
 #include <MG_State/GLState/Core.h>
 #include <MG_State/EGLState/Core.h>
 #include <MG_Backend/BackendObjects.h>
-#include "../Getter/GL_Getter.h"
 
 namespace MobileGL::MG_Impl::GLImpl {
     static Bool ValidateCurrentProgramForExecution(const char* functionName) {
-        const auto& currentProgram = MG_State::pGLContext->GetProgramForDraw();
+        const auto& currentProgram = MG_State::pGLContext->GetCurrentProgram();
         if (!currentProgram) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -37,7 +36,7 @@ namespace MobileGL::MG_Impl::GLImpl {
     static Bool ValidateCurrentProgramForCompute(const char* functionName) {
         if (!ValidateCurrentProgramForExecution(functionName)) return false;
 
-        const auto& currentProgram = MG_State::pGLContext->GetProgramForDraw();
+        const auto& currentProgram = MG_State::pGLContext->GetCurrentProgram();
         if (currentProgram->GetShaderIndexByStage(ShaderStage::Compute) < 0) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -49,109 +48,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         return true;
     }
 
-    // Primitives a draw of `count` vertices in `mode` assembles (0 for
-    // incomplete primitives). Used for the CPU-side transform feedback
-    // primitive accounting.
-    static Uint64 CountPrimitivesForDraw(GLenum mode, GLsizei count) {
-        if (count <= 0) return 0;
-        switch (mode) {
-        case GL_POINTS: return static_cast<Uint64>(count);
-        case GL_LINES: return static_cast<Uint64>(count / 2);
-        case GL_LINE_STRIP: return count >= 2 ? static_cast<Uint64>(count - 1) : 0;
-        case GL_LINE_LOOP: return count >= 2 ? static_cast<Uint64>(count) : 0;
-        case GL_TRIANGLES: return static_cast<Uint64>(count / 3);
-        case GL_TRIANGLE_STRIP:
-        case GL_TRIANGLE_FAN: return count >= 3 ? static_cast<Uint64>(count - 2) : 0;
-        default: return 0;
-        }
-    }
-
-    // Accumulate the transform feedback primitive counter for a captured draw.
-    // Draws without a geometry stage write exactly the primitives they assemble,
-    // clamped by the capture buffers' remaining capacity (a full buffer stops
-    // recording whole primitives, which is what PRIMITIVES_WRITTEN reports).
-    // Geometry amplification is not modelled here.
-    static void AccountTransformFeedbackPrimitives(GLenum mode, GLsizei count) {
-        if (!MG_State::pGLContext->IsTransformFeedbackActive()) return;
-        // A paused span captures nothing, so a draw made while paused contributes to
-        // PRIMITIVES_GENERATED but not to TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN.
-        if (MG_State::pGLContext->IsTransformFeedbackPaused()) {
-            MG_State::pGLContext->AddTransformFeedbackPausedPrimitives(CountPrimitivesForDraw(mode, count));
-            return;
-        }
-        Uint64 primitives = CountPrimitivesForDraw(mode, count);
-        if (primitives == 0) return;
-        MG_State::pGLContext->AddTransformFeedbackInputPrimitives(primitives);
-
-        Uint64 verticesPerPrimitive = 1;
-        switch (mode) {
-        case GL_LINES:
-        case GL_LINE_STRIP:
-        case GL_LINE_LOOP:
-            verticesPerPrimitive = 2;
-            break;
-        case GL_TRIANGLES:
-        case GL_TRIANGLE_STRIP:
-        case GL_TRIANGLE_FAN:
-            verticesPerPrimitive = 3;
-            break;
-        default:
-            break;
-        }
-
-        const auto& program = MG_State::pGLContext->GetTransformFeedbackProgram();
-        if (program != nullptr) {
-            // Capacity in captured vertices = the tightest bound buffer.
-            Uint64 capacityVertices = ~0ull;
-            for (SizeT i = 0; i < program->GetTransformFeedbackBufferCount(); ++i) {
-                const Uint32 stride = program->GetTransformFeedbackStride(static_cast<Uint32>(i));
-                if (stride == 0) continue;
-                const auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::TransformFeedback,
-                                                                                static_cast<Uint>(i));
-                const Range1D range = point.GetRange();
-                const Uint64 bytes = range.end > range.start ? static_cast<Uint64>(range.end - range.start) : 0;
-                capacityVertices = std::min<Uint64>(capacityVertices, bytes / stride);
-            }
-            if (capacityVertices != ~0ull) {
-                const Uint64 usedVertices = MG_State::pGLContext->GetTransformFeedbackCapturedVertices();
-                const Uint64 remainingVertices = capacityVertices > usedVertices ? capacityVertices - usedVertices : 0;
-                primitives = std::min<Uint64>(primitives, remainingVertices / verticesPerPrimitive);
-            }
-        }
-        MG_State::pGLContext->AddTransformFeedbackPrimitives(primitives);
-        MG_State::pGLContext->AddTransformFeedbackCapturedVertices(primitives * verticesPerPrimitive);
-    }
-
-    // Every primitive mode a draw command accepts (GL 4.6 core table 10.1, plus
-    // GL_PATCHES for the tessellation pipeline). Anything else is GL_INVALID_ENUM.
-    static Bool IsAcceptedPrimitiveMode(GLenum mode) {
-        switch (mode) {
-        case GL_POINTS:
-        case GL_LINES:
-        case GL_LINE_LOOP:
-        case GL_LINE_STRIP:
-        case GL_LINES_ADJACENCY:
-        case GL_LINE_STRIP_ADJACENCY:
-        case GL_TRIANGLES:
-        case GL_TRIANGLE_STRIP:
-        case GL_TRIANGLE_FAN:
-        case GL_TRIANGLES_ADJACENCY:
-        case GL_TRIANGLE_STRIP_ADJACENCY:
-        case GL_PATCHES:
-            return true;
-        default:
-            return false;
-        }
-    }
-
     static Bool ValidatePrimitiveModeForBackend(const char* functionName, GLenum mode) {
-        if (!IsAcceptedPrimitiveMode(mode)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName, "mode is not an accepted primitive type."));
-            return false;
-        }
-
         const auto& activeBackendObject = MG_Backend::pActiveBackendObject;
         if (!activeBackendObject) {
             MG_State::pGLContext->RecordError(
@@ -160,6 +57,15 @@ namespace MobileGL::MG_Impl::GLImpl {
             return false;
         }
 
+        if (activeBackendObject->GetBackendType() == BackendType::DirectVulkan && mode == GL_LINE_LOOP) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl", functionName,
+                    "Primitive mode GL_LINE_LOOP is not supported by the DirectVulkan backend."));
+            return false;
+        }
+
         const auto& vao = MG_State::pGLContext->GetBoundVertexArray();
         if (vao && vao->GetExternalIndex() == 0 && !MG_State::IsRelaxedSemanticsActive()) {
             MG_State::pGLContext->RecordError(
@@ -169,133 +75,9 @@ namespace MobileGL::MG_Impl::GLImpl {
             return false;
         }
 
-        // A geometry stage only accepts the primitive types that decompose into its declared
-        // input primitive (GL 4.6 core 11.3.1); anything else is INVALID_OPERATION. GL_PATCHES
-        // is the tessellation pipeline's input and reaches the geometry stage already
-        // converted, so it is not constrained here.
-        const auto& currentProgram = MG_State::pGLContext->GetProgramForDraw();
-        const GLenum gsInput = currentProgram ? currentProgram->GetGeometryInputType() : GL_NONE;
-        if (gsInput != GL_NONE && mode != GL_PATCHES) {
-            Bool compatible = false;
-            switch (gsInput) {
-            case GL_POINTS:
-                compatible = mode == GL_POINTS;
-                break;
-            case GL_LINES:
-                compatible = mode == GL_LINES || mode == GL_LINE_STRIP || mode == GL_LINE_LOOP;
-                break;
-            case GL_LINES_ADJACENCY:
-                compatible = mode == GL_LINES_ADJACENCY || mode == GL_LINE_STRIP_ADJACENCY;
-                break;
-            case GL_TRIANGLES:
-                compatible = mode == GL_TRIANGLES || mode == GL_TRIANGLE_STRIP || mode == GL_TRIANGLE_FAN;
-                break;
-            case GL_TRIANGLES_ADJACENCY:
-                compatible = mode == GL_TRIANGLES_ADJACENCY || mode == GL_TRIANGLE_STRIP_ADJACENCY;
-                break;
-            default:
-                break;
-            }
-            if (!compatible) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", functionName,
-                        "Primitive mode is incompatible with the geometry shader's input primitive type."));
-                return false;
-            }
-        }
-
-        // While transform feedback is active the draw's primitive type must match
-        // the feedback primitive mode (GL 3.3 core 13.2.2). With a geometry shader
-        // the constraint moves to the shader's output primitive type instead, so
-        // the draw mode itself is unconstrained here. A paused span is exempt: it
-        // captures nothing, so there is nothing for the mode to be incompatible with
-        // (GL 4.6 core 13.2.3).
-        if (MG_State::pGLContext->IsTransformFeedbackActive() &&
-            !MG_State::pGLContext->IsTransformFeedbackPaused() &&
-            !(MG_State::pGLContext->GetTransformFeedbackProgram() &&
-              MG_State::pGLContext->GetTransformFeedbackProgram()->GetShaderIndexByStage(ShaderStage::Geometry) >= 0)) {
-            const GLenum feedbackMode = MG_State::pGLContext->GetTransformFeedbackPrimitiveMode();
-            Bool compatible = false;
-            switch (feedbackMode) {
-            case GL_POINTS:
-                compatible = mode == GL_POINTS;
-                break;
-            case GL_LINES:
-                compatible = mode == GL_LINES || mode == GL_LINE_STRIP || mode == GL_LINE_LOOP;
-                break;
-            case GL_TRIANGLES:
-                compatible = mode == GL_TRIANGLES || mode == GL_TRIANGLE_STRIP || mode == GL_TRIANGLE_FAN;
-                break;
-            default:
-                break;
-            }
-            if (!compatible) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", functionName,
-                        "Primitive mode is incompatible with the active transform feedback primitive mode."));
-                return false;
-            }
-        }
-
         return true;
     }
 
-    // Byte size of the command structures the indirect draws read (GL 4.6 core 10.3.10).
-    constexpr SizeT kDrawArraysIndirectCommandBytes = 4 * sizeof(Uint32);
-    constexpr SizeT kDrawElementsIndirectCommandBytes = 5 * sizeof(Uint32);
-
-    // Shared preconditions of every *Indirect draw: `indirect` is a byte offset into the
-    // buffer bound to GL_DRAW_INDIRECT_BUFFER, must be 4-byte aligned, and the whole
-    // command has to lie inside that buffer.
-    static Bool ValidateIndirectDrawSource(const char* functionName, const void* indirect, SizeT commandBytes) {
-        const auto offset = reinterpret_cast<uintptr_t>(indirect);
-        if (offset % 4 != 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                             "indirect offset must be a multiple of 4."));
-            return false;
-        }
-
-        const auto& buffer = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
-        if (!buffer) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                             "No buffer is bound to GL_DRAW_INDIRECT_BUFFER."));
-            return false;
-        }
-
-        if (offset + commandBytes > buffer->GetSize()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                             "The indirect command extends past the end of the bound "
-                                             "GL_DRAW_INDIRECT_BUFFER."));
-            return false;
-        }
-        return true;
-    }
-
-    // Index type accepted by the DrawElements family (GL 4.6 core 10.3.9).
-    static Bool ValidateDrawElementsIndexType(const char* functionName, GLenum type) {
-        switch (type) {
-        case GL_UNSIGNED_BYTE:
-        case GL_UNSIGNED_SHORT:
-        case GL_UNSIGNED_INT:
-            return true;
-        default:
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName, "type is not an accepted index type."));
-            return false;
-        }
-    }
-
     void Clear_Backend(GLbitfield mask) {
 #ifdef TRACY_ENABLE
         ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
@@ -490,28 +272,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         dispatchComputeIndirect(indirect);
     }
 
-    void PatchParameteri(GLenum pname, GLint value) {
-        if (pname != GL_PATCH_VERTICES) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "pname must be GL_PATCH_VERTICES."));
-            return;
-        }
-        GLint maxPatchVertices = 32;
-        GetIntegerv(GL_MAX_PATCH_VERTICES, &maxPatchVertices);
-        if (value <= 0 || value > maxPatchVertices) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "value must be in [1, GL_MAX_PATCH_VERTICES]."));
-            return;
-        }
-        MG_State::pGLContext->SetPatchVertices(static_cast<Uint>(value));
-        if (const auto patchParameteri = MG_Backend::gBackendFunctionsTable.GL.PatchParameteri) {
-            patchParameteri(pname, value);
-        }
-    }
-
     void MemoryBarrier(GLbitfield barriers) {
         auto memoryBarrier = MG_Backend::gBackendFunctionsTable.GL.MemoryBarrier;
         if (!memoryBarrier) {
@@ -617,8 +377,6 @@ namespace MobileGL::MG_Impl::GLImpl {
     void DrawElementsIndirect(GLenum mode, GLenum type, const void* indirect) {
         if (!ValidateCurrentProgramForExecution(__func__)) return;
         if (!ValidatePrimitiveModeForBackend(__func__, mode)) return;
-        if (!ValidateDrawElementsIndexType(__func__, type)) return;
-        if (!ValidateIndirectDrawSource(__func__, indirect, kDrawElementsIndirectCommandBytes)) return;
         DrawElementsIndirect_Backend(mode, type, indirect);
     }
 
@@ -638,21 +396,18 @@ namespace MobileGL::MG_Impl::GLImpl {
     void DrawArraysIndirect(GLenum mode, const void* indirect) {
         if (!ValidateCurrentProgramForExecution(__func__)) return;
         if (!ValidatePrimitiveModeForBackend(__func__, mode)) return;
-        if (!ValidateIndirectDrawSource(__func__, indirect, kDrawArraysIndirectCommandBytes)) return;
         DrawArraysIndirect_Backend(mode, indirect);
     }
 
     void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices, GLint basevertex) {
         if (!ValidateCurrentProgramForExecution(__func__)) return;
         if (!ValidatePrimitiveModeForBackend(__func__, mode)) return;
-        AccountTransformFeedbackPrimitives(mode, count);
         DrawElementsBaseVertex_Backend(mode, count, type, indices, basevertex);
     }
 
     void DrawArrays(GLenum mode, GLint first, GLsizei count) {
         if (!ValidateCurrentProgramForExecution(__func__)) return;
         if (!ValidatePrimitiveModeForBackend(__func__, mode)) return;
-        AccountTransformFeedbackPrimitives(mode, count);
         DrawArrays_Backend(mode, first, count);
     }
 
@@ -689,487 +444,7 @@ namespace MobileGL::MG_Impl::GLImpl {
     void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices) {
         if (!ValidateCurrentProgramForExecution(__func__)) return;
         if (!ValidatePrimitiveModeForBackend(__func__, mode)) return;
-        AccountTransformFeedbackPrimitives(mode, count);
         DrawElements_Backend(mode, count, type, indices);
     }
 
-    void BeginTransformFeedback(GLenum primitiveMode) {
-        if (primitiveMode != GL_POINTS && primitiveMode != GL_LINES && primitiveMode != GL_TRIANGLES) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "primitiveMode must be GL_POINTS, GL_LINES or GL_TRIANGLES."));
-            return;
-        }
-        if (MG_State::pGLContext->IsTransformFeedbackActive()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "Transform feedback is already active."));
-            return;
-        }
-        const auto& program = MG_State::pGLContext->GetProgramForDraw();
-        if (!program || !program->GetLinkStatus() || program->GetTransformFeedbackVaryingCount() == 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl", __func__,
-                    "No program with transform feedback varyings is active."));
-            return;
-        }
-        // Every capture buffer slot the program's mode uses must have a buffer bound. A slot
-        // of stride 0 - two consecutive gl_NextBuffer entries - captures nothing and so needs
-        // no binding.
-        const SizeT usedBufferCount = program->GetTransformFeedbackBufferCount();
-        for (SizeT i = 0; i < usedBufferCount; ++i) {
-            if (program->GetTransformFeedbackStride(static_cast<Uint32>(i)) == 0) continue;
-            const auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::TransformFeedback,
-                                                                            static_cast<Uint>(i));
-            if (point.GetBoundObject() == nullptr) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", __func__,
-                        "Transform feedback buffer binding point " + std::to_string(i) + " has no buffer bound."));
-                return;
-            }
-        }
-        MG_State::pGLContext->BeginTransformFeedback(primitiveMode, program);
-        if (const auto beginXfb = MG_Backend::gBackendFunctionsTable.GL.BeginTransformFeedback) {
-            beginXfb(primitiveMode);
-        }
-    }
-
-    // Vulkan transform feedback captures triangle strips in plain (i, i+1, i+2)
-    // vertex order, but GL decomposes odd strip triangles as (i+1, i, i+2)
-    // (GL 4.6 table 10.1). With the geometry stage's statically-known strip
-    // lengths the captured records are reordered in place: swap the first two
-    // vertex records of every odd triangle within each emitted strip.
-    static void FixupGsStripCaptureOrder(const SharedPtr<MG_State::GLState::ProgramObject>& program,
-                                         Uint64 inputPrimitives) {
-        // Only Vulkan-order captures need this. A backend that runs the capture on its
-        // own GL/ES driver (it owns the span, hence the EndTransformFeedback entry) has
-        // already produced GL's vertex order, and reordering it again would corrupt it.
-        if (MG_Backend::gBackendFunctionsTable.GL.EndTransformFeedback != nullptr) {
-            return;
-        }
-        if (program == nullptr || !program->HasGsTriangleStripCaptureFixup() || inputPrimitives == 0) {
-            return;
-        }
-        const auto& stripTriangles = program->GetGsStripTriangles();
-
-        // Global triangle indices whose leading vertex pair must swap.
-        Vector<Uint64> swapTriangles;
-        Uint64 triangleBase = 0;
-        for (Uint64 input = 0; input < inputPrimitives; ++input) {
-            for (const Uint32 stripLength : stripTriangles) {
-                for (Uint32 t = 1; t < stripLength; t += 2) {
-                    swapTriangles.push_back(triangleBase + t);
-                }
-                triangleBase += stripLength;
-            }
-        }
-        if (swapTriangles.empty()) {
-            return;
-        }
-
-        for (SizeT bufferIndex = 0; bufferIndex < program->GetTransformFeedbackBufferCount(); ++bufferIndex) {
-            const Uint32 stride = program->GetTransformFeedbackStride(static_cast<Uint32>(bufferIndex));
-            if (stride == 0) continue;
-            const auto& bindingPoint =
-                MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::TransformFeedback,
-                                                            static_cast<Uint>(bufferIndex));
-            const auto& buffer = bindingPoint.GetBoundObject();
-            if (buffer == nullptr) continue;
-            const Range1D range = bindingPoint.GetRange();
-            const Uint8* mapped = buffer->MappedData();
-            if (mapped == nullptr) continue;
-            // The geometry stage amplifies, so the CPU vertex counter does not bound
-            // the capture; the binding range's whole-triangle capacity does.
-            const Uint64 rangeBytes = range.end > range.start ? static_cast<Uint64>(range.end - range.start) : 0;
-            const Uint64 capturedTriangles = std::min<Uint64>(triangleBase, (rangeBytes / stride) / 3);
-
-            // Observed Vulkan capture order for odd strip triangles is (i, i+2, i+1)
-            // (winding preserved by swapping the trailing pair); GL wants
-            // (i+1, i, i+2), which is one rotation away: (a,b,c) -> (c,a,b).
-            Vector<Uint8> scratch(stride);
-            for (const Uint64 triangle : swapTriangles) {
-                if (triangle >= capturedTriangles) break;
-                const SizeT v0Offset = static_cast<SizeT>(range.start) + static_cast<SizeT>(triangle * 3) * stride;
-                const SizeT v1Offset = v0Offset + stride;
-                const SizeT v2Offset = v1Offset + stride;
-                Memcpy(scratch.data(), mapped + v2Offset, stride);
-                buffer->WritebackFromBackend({const_cast<Uint8*>(mapped) + v1Offset, stride}, v2Offset);
-                buffer->WritebackFromBackend({const_cast<Uint8*>(mapped) + v0Offset, stride}, v1Offset);
-                buffer->WritebackFromBackend({scratch.data(), stride}, v0Offset);
-            }
-        }
-    }
-
-    void EndTransformFeedback(void) {
-        if (!MG_State::pGLContext->IsTransformFeedbackActive()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "Transform feedback is not active."));
-            return;
-        }
-        const auto capturedProgram = MG_State::pGLContext->GetTransformFeedbackProgram();
-        const Uint64 inputPrimitives = MG_State::pGLContext->GetTransformFeedbackInputPrimitives();
-        // Closed while the capture state is still active: a backend that captures
-        // through its own driver reads the capture program and buffer bindings here.
-        if (const auto endXfb = MG_Backend::gBackendFunctionsTable.GL.EndTransformFeedback) {
-            endXfb();
-        }
-        MG_State::pGLContext->EndTransformFeedback();
-        // Captured results must be visible to MapBuffer/GetBufferSubData after
-        // End; the capture targets are host-coherent GPU memory, so completing
-        // the GPU work is all that is required.
-        auto& backendGL = MG_Backend::gBackendFunctionsTable.GL;
-        if (backendGL.FenceSync && backendGL.ClientWaitSync) {
-            if (auto sync = backendGL.FenceSync()) {
-                backendGL.ClientWaitSync(sync, GL_SYNC_FLUSH_COMMANDS_BIT, ~0ull);
-                if (backendGL.DeleteSync) {
-                    backendGL.DeleteSync(sync);
-                }
-            }
-        }
-        FixupGsStripCaptureOrder(capturedProgram, inputPrimitives);
-    }
-
-    void PauseTransformFeedback(void) {
-        if (!MG_State::pGLContext->IsTransformFeedbackActive() ||
-            MG_State::pGLContext->IsTransformFeedbackPaused()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "Transform feedback is not active, or is already paused."));
-            return;
-        }
-        MG_State::pGLContext->SetTransformFeedbackPaused(true);
-        if (const auto pauseXfb = MG_Backend::gBackendFunctionsTable.GL.PauseTransformFeedback) {
-            pauseXfb();
-        }
-    }
-
-    void ResumeTransformFeedback(void) {
-        if (!MG_State::pGLContext->IsTransformFeedbackActive() ||
-            !MG_State::pGLContext->IsTransformFeedbackPaused()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "Transform feedback is not paused."));
-            return;
-        }
-        MG_State::pGLContext->SetTransformFeedbackPaused(false);
-        if (const auto resumeXfb = MG_Backend::gBackendFunctionsTable.GL.ResumeTransformFeedback) {
-            resumeXfb();
-        }
-    }
-
-    void GenTransformFeedbacks(GLsizei n, GLuint* ids) {
-        if (n < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "n must be non-negative."));
-            return;
-        }
-        if (n == 0 || ids == nullptr) return;
-        Vector<Uint> names;
-        MG_State::pGLContext->GenTransformFeedbackNames(static_cast<Uint>(n), names);
-        Memcpy(ids, names.data(), static_cast<SizeT>(n) * sizeof(GLuint));
-    }
-
-    void CreateTransformFeedbacks(GLsizei n, GLuint* ids) {
-        if (n < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "n must be non-negative."));
-            return;
-        }
-        if (n == 0 || ids == nullptr) return;
-        Vector<Uint> names;
-        MG_State::pGLContext->GenTransformFeedbackNames(static_cast<Uint>(n), names);
-        // Unlike glGenTransformFeedbacks, the names are objects immediately: there is no bind step
-        // to create them from (GL 4.6 core 13.2.1).
-        for (const Uint name : names) {
-            MG_State::pGLContext->CreateTransformFeedbackObject(name);
-        }
-        Memcpy(ids, names.data(), static_cast<SizeT>(n) * sizeof(GLuint));
-    }
-
-    namespace {
-        // Shared front half of the by-name transform feedback entry points: the object has to exist
-        // (INVALID_OPERATION otherwise) before anything else about the call is looked at.
-        Bool ValidateNamedTransformFeedback(GLuint xfb, const char* functionName) {
-            if (!MG_State::pGLContext->IsTransformFeedbackObject(xfb)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                                 std::to_string(xfb) + " is not a transform feedback object."));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateTransformFeedbackBufferIndex(GLuint index, const char* functionName) {
-            if (index >= MG_State::GLState::GLContext::MAX_TRANSFORM_FEEDBACK_BUFFERS) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                                 "index exceeds GL_MAX_TRANSFORM_FEEDBACK_BUFFERS."));
-                return false;
-            }
-            return true;
-        }
-
-        // A capture binding may not be changed while the object is capturing (GL 4.6 core 13.2.2).
-        Bool ValidateNamedTransformFeedbackNotActive(GLuint xfb, const char* functionName) {
-            if (MG_State::pGLContext->IsNamedTransformFeedbackActive(xfb)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                                 "The transform feedback object is capturing."));
-                return false;
-            }
-            return true;
-        }
-
-        SharedPtr<MG_State::GLState::BufferObject> ResolveTransformFeedbackBuffer(GLuint buffer,
-                                                                                 const char* functionName) {
-            if (buffer == 0) return nullptr;
-            if (!MG_State::pGLContext->ValidateBufferName(buffer)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                                 std::to_string(buffer) + " is not a buffer object."));
-                return nullptr;
-            }
-            return MG_State::pGLContext->GetBufferObject(buffer);
-        }
-    } // namespace
-
-    void TransformFeedbackBufferBase(GLuint xfb, GLuint index, GLuint buffer) {
-        if (!ValidateNamedTransformFeedback(xfb, __func__)) return;
-        if (!ValidateTransformFeedbackBufferIndex(index, __func__)) return;
-        if (!ValidateNamedTransformFeedbackNotActive(xfb, __func__)) return;
-        if (buffer != 0 && !MG_State::pGLContext->ValidateBufferName(buffer)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             std::to_string(buffer) + " is not a buffer object."));
-            return;
-        }
-        MG_State::pGLContext->SetNamedTransformFeedbackBinding(xfb, index,
-                                                               ResolveTransformFeedbackBuffer(buffer, __func__), {},
-                                                               false);
-    }
-
-    void TransformFeedbackBufferRange(GLuint xfb, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size) {
-        if (!ValidateNamedTransformFeedback(xfb, __func__)) return;
-        if (!ValidateTransformFeedbackBufferIndex(index, __func__)) return;
-        if (!ValidateNamedTransformFeedbackNotActive(xfb, __func__)) return;
-        if (offset < 0 || size <= 0 || (offset % 4) != 0 || (size % 4) != 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "offset and size must be non-negative multiples of 4."));
-            return;
-        }
-        if (buffer != 0 && !MG_State::pGLContext->ValidateBufferName(buffer)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             std::to_string(buffer) + " is not a buffer object."));
-            return;
-        }
-        auto bufferObject = ResolveTransformFeedbackBuffer(buffer, __func__);
-        const Range1D range{static_cast<SizeT>(offset), static_cast<SizeT>(offset) + static_cast<SizeT>(size)};
-        MG_State::pGLContext->SetNamedTransformFeedbackBinding(xfb, index, bufferObject, range,
-                                                               bufferObject != nullptr);
-    }
-
-    void GetTransformFeedbackiv(GLuint xfb, GLenum pname, GLint* param) {
-        if (!ValidateNamedTransformFeedback(xfb, __func__)) return;
-        if (!param) return;
-        switch (pname) {
-        case GL_TRANSFORM_FEEDBACK_ACTIVE:
-            *param = MG_State::pGLContext->IsNamedTransformFeedbackActive(xfb) ? GL_TRUE : GL_FALSE;
-            return;
-        case GL_TRANSFORM_FEEDBACK_PAUSED:
-            *param = MG_State::pGLContext->IsNamedTransformFeedbackPaused(xfb) ? GL_TRUE : GL_FALSE;
-            return;
-        default:
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "pname must be GL_TRANSFORM_FEEDBACK_ACTIVE or _PAUSED."));
-            return;
-        }
-    }
-
-    void GetTransformFeedbacki_v(GLuint xfb, GLenum pname, GLuint index, GLint* param) {
-        if (!ValidateNamedTransformFeedback(xfb, __func__)) return;
-        if (pname != GL_TRANSFORM_FEEDBACK_BUFFER_BINDING) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "pname must be GL_TRANSFORM_FEEDBACK_BUFFER_BINDING."));
-            return;
-        }
-        if (!ValidateTransformFeedbackBufferIndex(index, __func__)) return;
-        if (!param) return;
-        const auto binding = MG_State::pGLContext->GetNamedTransformFeedbackBinding(xfb, index);
-        *param = binding.Buffer ? static_cast<GLint>(binding.Buffer->GetExternalIndex()) : 0;
-    }
-
-    void GetTransformFeedbacki64_v(GLuint xfb, GLenum pname, GLuint index, GLint64* param) {
-        if (!ValidateNamedTransformFeedback(xfb, __func__)) return;
-        if (pname != GL_TRANSFORM_FEEDBACK_BUFFER_START && pname != GL_TRANSFORM_FEEDBACK_BUFFER_SIZE) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "pname must be GL_TRANSFORM_FEEDBACK_BUFFER_START or _SIZE."));
-            return;
-        }
-        if (!ValidateTransformFeedbackBufferIndex(index, __func__)) return;
-        if (!param) return;
-        const auto binding = MG_State::pGLContext->GetNamedTransformFeedbackBinding(xfb, index);
-        // glTransformFeedbackBufferBase leaves both at zero; only the range form sets them
-        // (GL 4.6 core table 23.48).
-        if (!binding.Buffer || !binding.HasExplicitRange) {
-            *param = 0;
-            return;
-        }
-        *param = (pname == GL_TRANSFORM_FEEDBACK_BUFFER_START)
-                     ? static_cast<GLint64>(binding.Range.start)
-                     : static_cast<GLint64>(binding.Range.end - binding.Range.start);
-    }
-
-    void DeleteTransformFeedbacks(GLsizei n, const GLuint* ids) {
-        if (n < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "n must be non-negative."));
-            return;
-        }
-        if (ids == nullptr) return;
-        for (GLsizei i = 0; i < n; ++i) {
-            const GLuint id = ids[i];
-            // Unknown names and 0 are silently ignored; an object whose capture span is
-            // still open is not (GL 4.6 core 13.2.1).
-            if (id == 0 || !MG_State::pGLContext->ValidateTransformFeedbackName(id)) continue;
-            if (id == MG_State::pGLContext->GetBoundTransformFeedbackName() &&
-                MG_State::pGLContext->IsTransformFeedbackActive()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                                 "Cannot delete a transform feedback object whose capture is active."));
-                continue;
-            }
-            if (const auto deleteXfb = MG_Backend::gBackendFunctionsTable.GL.DeleteTransformFeedback) {
-                deleteXfb(id);
-            }
-            MG_State::pGLContext->MarkTransformFeedbackObjectForDeletion(id);
-        }
-    }
-
-    void BindTransformFeedback(GLenum target, GLuint id) {
-        if (target != GL_TRANSFORM_FEEDBACK) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "target must be GL_TRANSFORM_FEEDBACK."));
-            return;
-        }
-        // A running capture pins its object; only a paused one may be swapped out.
-        if (MG_State::pGLContext->IsTransformFeedbackActive() &&
-            !MG_State::pGLContext->IsTransformFeedbackPaused()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "Transform feedback is active and not paused."));
-            return;
-        }
-        if (!MG_State::pGLContext->ValidateTransformFeedbackName(id)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             std::to_string(id) + " is not a transform feedback object name."));
-            return;
-        }
-        MG_State::pGLContext->BindTransformFeedbackObject(id);
-        if (const auto bindXfb = MG_Backend::gBackendFunctionsTable.GL.BindTransformFeedback) {
-            bindXfb(id);
-        }
-    }
-
-    GLboolean IsTransformFeedback(GLuint id) {
-        // Name 0 is the default object, and a name glGenTransformFeedbacks handed out only
-        // becomes the name of an object once it has been bound.
-        return MG_State::pGLContext->IsTransformFeedbackObject(id) ? GL_TRUE : GL_FALSE;
-    }
-
-    // glDrawTransformFeedback[Stream][Instanced]: replays the vertices the named object
-    // captured in its last completed span, as if by glDrawArraysInstanced with that count
-    // (GL 4.6 core 10.3.7).
-    static void DrawTransformFeedbackImpl(const char* functionName, GLenum mode, GLuint id, GLuint stream,
-                                          GLsizei instancecount) {
-        if (!ValidateCurrentProgramForExecution(functionName)) return;
-        if (!ValidatePrimitiveModeForBackend(functionName, mode)) return;
-        if (instancecount < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName, "instancecount must be non-negative."));
-            return;
-        }
-        if (!MG_State::pGLContext->ValidateTransformFeedbackName(id)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                             std::to_string(id) + " is not a transform feedback object name."));
-            return;
-        }
-        // GL_MAX_VERTEX_STREAMS is 1, so stream 0 is the only one that exists.
-        if (stream != 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                             "stream must be less than GL_MAX_VERTEX_STREAMS."));
-            return;
-        }
-        // Drawing from an object whose capture is currently open is legal and deliberate:
-        // it is how a transform feedback result is fed straight back into the next span
-        // (ARB_transform_feedback2 lists no such restriction).
-        if (!MG_State::pGLContext->HasTransformFeedbackCompletedSpan(id)) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", functionName,
-                                             "glEndTransformFeedback has never been called for this object."));
-            return;
-        }
-
-        const Uint64 vertices = MG_State::pGLContext->GetTransformFeedbackRecordedVertices(id);
-        if (vertices == 0) return;
-        const auto count = static_cast<GLsizei>(vertices);
-        AccountTransformFeedbackPrimitives(mode, count);
-        if (instancecount == 1) {
-            DrawArrays_Backend(mode, 0, count);
-        } else {
-            DrawArraysInstanced_Backend(mode, 0, count, instancecount);
-        }
-    }
-
-    void DrawTransformFeedback(GLenum mode, GLuint id) {
-        DrawTransformFeedbackImpl(__func__, mode, id, 0, 1);
-    }
-
-    void DrawTransformFeedbackInstanced(GLenum mode, GLuint id, GLsizei instancecount) {
-        DrawTransformFeedbackImpl(__func__, mode, id, 0, instancecount);
-    }
-
-    void DrawTransformFeedbackStream(GLenum mode, GLuint id, GLuint stream) {
-        DrawTransformFeedbackImpl(__func__, mode, id, stream, 1);
-    }
-
-    void DrawTransformFeedbackStreamInstanced(GLenum mode, GLuint id, GLuint stream, GLsizei instancecount) {
-        DrawTransformFeedbackImpl(__func__, mode, id, stream, instancecount);
-    }
-
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Drawing/GL_Drawing.h

@@ -11,27 +11,8 @@
 
 namespace MobileGL::MG_Impl::GLImpl {
     /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-    void BeginTransformFeedback(GLenum primitiveMode);
-    void EndTransformFeedback(void);
-    void PauseTransformFeedback(void);
-    void ResumeTransformFeedback(void);
-    void GenTransformFeedbacks(GLsizei n, GLuint* ids);
-    void CreateTransformFeedbacks(GLsizei n, GLuint* ids);
-    void DeleteTransformFeedbacks(GLsizei n, const GLuint* ids);
-    void TransformFeedbackBufferBase(GLuint xfb, GLuint index, GLuint buffer);
-    void TransformFeedbackBufferRange(GLuint xfb, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
-    void GetTransformFeedbackiv(GLuint xfb, GLenum pname, GLint* param);
-    void GetTransformFeedbacki_v(GLuint xfb, GLenum pname, GLuint index, GLint* param);
-    void GetTransformFeedbacki64_v(GLuint xfb, GLenum pname, GLuint index, GLint64* param);
-    void BindTransformFeedback(GLenum target, GLuint id);
-    GLboolean IsTransformFeedback(GLuint id);
-    void DrawTransformFeedback(GLenum mode, GLuint id);
-    void DrawTransformFeedbackInstanced(GLenum mode, GLuint id, GLsizei instancecount);
-    void DrawTransformFeedbackStream(GLenum mode, GLuint id, GLuint stream);
-    void DrawTransformFeedbackStreamInstanced(GLenum mode, GLuint id, GLuint stream, GLsizei instancecount);
     void DispatchCompute(GLuint numGroupsX, GLuint numGroupsY, GLuint numGroupsZ);
     void DispatchComputeIndirect(GLintptr indirect);
-    void PatchParameteri(GLenum pname, GLint value);
     void MemoryBarrier(GLbitfield barriers);
     void MemoryBarrierByRegion(GLbitfield barriers);
     void MultiDrawElementsIndirect(GLenum mode, GLenum type, const void* indirect, GLsizei drawcount, GLsizei stride);

MobileGL/MG_Impl/GLImpl/Exporting/Definitions.cpp

@@ -15,7 +15,6 @@
 #include "../Texture/GL_Texture.h"
 #include "../Drawing/GL_Drawing.h"
 #include "../Program/GL_Program.h"
-#include "../Program/GL_ProgramPipeline.h"
 #include "../RenderState/GL_RenderState.h"
 #include "../Framebuffer/GL_Framebuffer.h"
 #include "../VertexArray/GL_VertexArray.h"
@@ -237,12 +236,12 @@ DECLARE_GL_FUNCTION_HEAD(void, DeleteVertexArrays, GLsizei n, const GLuint* arra
 DECLARE_GL_FUNCTION_HEAD(void, GenVertexArrays, GLsizei n, GLuint* arrays) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GenVertexArrays, n, arrays)
 DECLARE_GL_FUNCTION_HEAD(GLboolean, IsVertexArray, GLuint array) DECLARE_GL_FUNCTION_END(GLboolean, IsVertexArray, array)
 DECLARE_GL_FUNCTION_HEAD(void, GetIntegeri_v, GLenum target, GLuint index, GLint* data) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetIntegeri_v, target, index, data)
-DECLARE_GL_FUNCTION_HEAD(void, BeginTransformFeedback, GLenum primitiveMode) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BeginTransformFeedback, primitiveMode)
-DECLARE_GL_FUNCTION_HEAD(void, EndTransformFeedback) DECLARE_GL_FUNCTION_END_NO_RETURN(void, EndTransformFeedback)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, BeginTransformFeedback, GLenum primitiveMode) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, BeginTransformFeedback, primitiveMode)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, EndTransformFeedback) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, EndTransformFeedback)
 DECLARE_GL_FUNCTION_HEAD(void, BindBufferRange, GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindBufferRange, target, index, buffer, offset, size)
 DECLARE_GL_FUNCTION_HEAD(void, BindBufferBase, GLenum target, GLuint index, GLuint buffer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindBufferBase, target, index, buffer)
-DECLARE_GL_FUNCTION_HEAD(void, TransformFeedbackVaryings, GLuint program, GLsizei count, const GLchar* const* varyings, GLenum bufferMode) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TransformFeedbackVaryings, program, count, varyings, bufferMode)
-DECLARE_GL_FUNCTION_HEAD(void, GetTransformFeedbackVarying, GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLsizei* size, GLenum* type, GLchar* name) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTransformFeedbackVarying, program, index, bufSize, length, size, type, name)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, TransformFeedbackVaryings, GLuint program, GLsizei count, const GLchar* const* varyings, GLenum bufferMode) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TransformFeedbackVaryings, program, count, varyings, bufferMode)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetTransformFeedbackVarying, GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLsizei* size, GLenum* type, GLchar* name) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetTransformFeedbackVarying, program, index, bufSize, length, size, type, name)
 DECLARE_GL_FUNCTION_HEAD(void, VertexAttribIPointer, GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexAttribIPointer, index, size, type, stride, pointer)
 DECLARE_GL_FUNCTION_HEAD(void, GetVertexAttribIiv, GLuint index, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetVertexAttribIiv, index, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetVertexAttribIuiv, GLuint index, GLenum pname, GLuint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetVertexAttribIuiv, index, pname, params)
@@ -293,17 +292,23 @@ DECLARE_GL_FUNCTION_HEAD(void, SamplerParameterfv, GLuint sampler, GLenum pname,
 DECLARE_GL_FUNCTION_HEAD(void, GetSamplerParameteriv, GLuint sampler, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetSamplerParameteriv, sampler, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetSamplerParameterfv, GLuint sampler, GLenum pname, GLfloat* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetSamplerParameterfv, sampler, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, VertexAttribDivisor, GLuint index, GLuint divisor) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexAttribDivisor, index, divisor)
-DECLARE_GL_FUNCTION_HEAD(void, BindTransformFeedback, GLenum target, GLuint id) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindTransformFeedback, target, id)
-DECLARE_GL_FUNCTION_HEAD(void, DeleteTransformFeedbacks, GLsizei n, const GLuint* ids) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DeleteTransformFeedbacks, n, ids)
-DECLARE_GL_FUNCTION_HEAD(void, GenTransformFeedbacks, GLsizei n, GLuint* ids) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GenTransformFeedbacks, n, ids)
-DECLARE_GL_FUNCTION_HEAD(GLboolean, IsTransformFeedback, GLuint id) DECLARE_GL_FUNCTION_END(GLboolean, IsTransformFeedback, id)
-DECLARE_GL_FUNCTION_HEAD(void, PauseTransformFeedback) DECLARE_GL_FUNCTION_END_NO_RETURN(void, PauseTransformFeedback)
-DECLARE_GL_FUNCTION_HEAD(void, ResumeTransformFeedback) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ResumeTransformFeedback)
-DECLARE_GL_FUNCTION_HEAD(void, GetProgramBinary, GLuint program, GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, void* binary) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetProgramBinary, program, bufSize, length, binaryFormat, binary)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramBinary, GLuint program, GLenum binaryFormat, const void* binary, GLsizei length) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramBinary, program, binaryFormat, binary, length)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramParameteri, GLuint program, GLenum pname, GLint value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramParameteri, program, pname, value)
-DECLARE_GL_FUNCTION_HEAD(void, InvalidateFramebuffer, GLenum target, GLsizei numAttachments, const GLenum* attachments) DECLARE_GL_FUNCTION_END_NO_RETURN(void, InvalidateFramebuffer, target, numAttachments, attachments)
-DECLARE_GL_FUNCTION_HEAD(void, InvalidateSubFramebuffer, GLenum target, GLsizei numAttachments, const GLenum* attachments, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, InvalidateSubFramebuffer, target, numAttachments, attachments, x, y, width, height)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, BindTransformFeedback, GLenum target, GLuint id) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, BindTransformFeedback, target, id)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, DeleteTransformFeedbacks, GLsizei n, const GLuint* ids) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, DeleteTransformFeedbacks, n, ids)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GenTransformFeedbacks, GLsizei n, GLuint* ids) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GenTransformFeedbacks, n, ids)
+// Transform feedback objects are not implemented, so no name is ever a live object. The shared
+// stub returns (type)1, telling a probing caller that every id it invents already exists; GL_FALSE
+// is both truthful and what the spec requires for a name that was never generated.
+MOBILEGL_GL_API GLboolean glIsTransformFeedback(GLuint id) {
+    MGLOG_W("Stub function: %s(...)", __FUNCTION__);
+    return GL_FALSE;
+}
+DECLARE_GL_FUNCTION_STUB_HEAD(void, PauseTransformFeedback) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, PauseTransformFeedback)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ResumeTransformFeedback) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ResumeTransformFeedback)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetProgramBinary, GLuint program, GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, void* binary) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetProgramBinary, program, bufSize, length, binaryFormat, binary)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramBinary, GLuint program, GLenum binaryFormat, const void* binary, GLsizei length) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramBinary, program, binaryFormat, binary, length)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramParameteri, GLuint program, GLenum pname, GLint value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramParameteri, program, pname, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, InvalidateFramebuffer, GLenum target, GLsizei numAttachments, const GLenum* attachments) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, InvalidateFramebuffer, target, numAttachments, attachments)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, InvalidateSubFramebuffer, GLenum target, GLsizei numAttachments, const GLenum* attachments, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, InvalidateSubFramebuffer, target, numAttachments, attachments, x, y, width, height)
 DECLARE_GL_FUNCTION_HEAD(void, TexStorage2D, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexStorage2D, target, levels, internalformat, width, height)
 DECLARE_GL_FUNCTION_HEAD(void, TexStorage3D, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexStorage3D, target, levels, internalformat, width, height, depth)
 DECLARE_GL_FUNCTION_HEAD(void, GetInternalformativ, GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetInternalformativ, target, internalformat, pname, bufSize, params)
@@ -311,21 +316,21 @@ DECLARE_GL_FUNCTION_HEAD(void, DispatchCompute, GLuint num_groups_x, GLuint num_
 DECLARE_GL_FUNCTION_HEAD(void, DispatchComputeIndirect, GLintptr indirect) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DispatchComputeIndirect, indirect)
 DECLARE_GL_FUNCTION_HEAD(void, DrawArraysIndirect, GLenum mode, const void* indirect) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawArraysIndirect, mode, indirect)
 DECLARE_GL_FUNCTION_HEAD(void, DrawElementsIndirect, GLenum mode, GLenum type, const void* indirect) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawElementsIndirect, mode, type, indirect)
-DECLARE_GL_FUNCTION_HEAD(void, FramebufferParameteri, GLenum target, GLenum pname, GLint param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, FramebufferParameteri, target, pname, param)
-DECLARE_GL_FUNCTION_HEAD(void, GetFramebufferParameteriv, GLenum target, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetFramebufferParameteriv, target, pname, params)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, FramebufferParameteri, GLenum target, GLenum pname, GLint param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, FramebufferParameteri, target, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetFramebufferParameteriv, GLenum target, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetFramebufferParameteriv, target, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetProgramInterfaceiv, GLuint program, GLenum programInterface, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetProgramInterfaceiv, program, programInterface, pname, params)
 DECLARE_GL_FUNCTION_HEAD(GLuint, GetProgramResourceIndex, GLuint program, GLenum programInterface, const GLchar* name) DECLARE_GL_FUNCTION_END(GLuint, GetProgramResourceIndex, program, programInterface, name)
 DECLARE_GL_FUNCTION_HEAD(void, GetProgramResourceName, GLuint program, GLenum programInterface, GLuint index, GLsizei bufSize, GLsizei* length, GLchar* name) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetProgramResourceName, program, programInterface, index, bufSize, length, name)
 DECLARE_GL_FUNCTION_HEAD(void, GetProgramResourceiv, GLuint program, GLenum programInterface, GLuint index, GLsizei propCount, const GLenum* props, GLsizei bufSize, GLsizei* length, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetProgramResourceiv, program, programInterface, index, propCount, props, bufSize, length, params)
 DECLARE_GL_FUNCTION_HEAD(GLint, GetProgramResourceLocation, GLuint program, GLenum programInterface, const GLchar* name) DECLARE_GL_FUNCTION_END(GLint, GetProgramResourceLocation, program, programInterface, name)
-DECLARE_GL_FUNCTION_HEAD(void, UseProgramStages, GLuint pipeline, GLbitfield stages, GLuint program) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UseProgramStages, pipeline, stages, program)
-DECLARE_GL_FUNCTION_HEAD(void, ActiveShaderProgram, GLuint pipeline, GLuint program) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ActiveShaderProgram, pipeline, program)
-DECLARE_GL_FUNCTION_HEAD(GLuint, CreateShaderProgramv, GLenum type, GLsizei count, const GLchar* const* strings) DECLARE_GL_FUNCTION_END(GLuint, CreateShaderProgramv, type, count, strings)
-DECLARE_GL_FUNCTION_HEAD(void, BindProgramPipeline, GLuint pipeline) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindProgramPipeline, pipeline)
-DECLARE_GL_FUNCTION_HEAD(void, DeleteProgramPipelines, GLsizei n, const GLuint* pipelines) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DeleteProgramPipelines, n, pipelines)
-DECLARE_GL_FUNCTION_HEAD(void, GenProgramPipelines, GLsizei n, GLuint* pipelines) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GenProgramPipelines, n, pipelines)
-DECLARE_GL_FUNCTION_HEAD(GLboolean, IsProgramPipeline, GLuint pipeline) DECLARE_GL_FUNCTION_END(GLboolean, IsProgramPipeline, pipeline)
-DECLARE_GL_FUNCTION_HEAD(void, GetProgramPipelineiv, GLuint pipeline, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetProgramPipelineiv, pipeline, pname, params)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UseProgramStages, GLuint pipeline, GLbitfield stages, GLuint program) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UseProgramStages, pipeline, stages, program)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ActiveShaderProgram, GLuint pipeline, GLuint program) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ActiveShaderProgram, pipeline, program)
+DECLARE_GL_FUNCTION_STUB_HEAD(GLuint, CreateShaderProgramv, GLenum type, GLsizei count, const GLchar* const* strings) DECLARE_GL_FUNCTION_STUB_END(GLuint, CreateShaderProgramv, type, count, strings)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, BindProgramPipeline, GLuint pipeline) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, BindProgramPipeline, pipeline)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, DeleteProgramPipelines, GLsizei n, const GLuint* pipelines) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, DeleteProgramPipelines, n, pipelines)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GenProgramPipelines, GLsizei n, GLuint* pipelines) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GenProgramPipelines, n, pipelines)
+DECLARE_GL_FUNCTION_STUB_HEAD(GLboolean, IsProgramPipeline, GLuint pipeline) DECLARE_GL_FUNCTION_STUB_END(GLboolean, IsProgramPipeline, pipeline)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetProgramPipelineiv, GLuint pipeline, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetProgramPipelineiv, pipeline, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform1i, GLuint program, GLint location, GLint v0) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform1i, program, location, v0)
 DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform2i, GLuint program, GLint location, GLint v0, GLint v1) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform2i, program, location, v0, v1)
 DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform3i, GLuint program, GLint location, GLint v0, GLint v1, GLint v2) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform3i, program, location, v0, v1, v2)
@@ -359,8 +364,8 @@ DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix2x4fv, GLuint program, GLint
 DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix4x2fv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix4x2fv, program, location, count, transpose, value)
 DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix3x4fv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix3x4fv, program, location, count, transpose, value)
 DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix4x3fv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix4x3fv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ValidateProgramPipeline, GLuint pipeline) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ValidateProgramPipeline, pipeline)
-DECLARE_GL_FUNCTION_HEAD(void, GetProgramPipelineInfoLog, GLuint pipeline, GLsizei bufSize, GLsizei* length, GLchar* infoLog) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetProgramPipelineInfoLog, pipeline, bufSize, length, infoLog)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ValidateProgramPipeline, GLuint pipeline) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ValidateProgramPipeline, pipeline)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetProgramPipelineInfoLog, GLuint pipeline, GLsizei bufSize, GLsizei* length, GLchar* infoLog) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetProgramPipelineInfoLog, pipeline, bufSize, length, infoLog)
 DECLARE_GL_FUNCTION_HEAD(void, BindImageTexture, GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access, GLenum format) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindImageTexture, unit, texture, level, layered, layer, access, format)
 DECLARE_GL_FUNCTION_HEAD(void, GetBooleani_v, GLenum target, GLuint index, GLboolean* data) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetBooleani_v, target, index, data)
 DECLARE_GL_FUNCTION_HEAD(void, MemoryBarrier, GLbitfield barriers) DECLARE_GL_FUNCTION_END_NO_RETURN(void, MemoryBarrier, barriers)
@@ -420,12 +425,12 @@ DECLARE_GL_FUNCTION_HEAD(void, DrawElementsInstancedBaseVertex, GLenum mode, GLs
 DECLARE_GL_FUNCTION_HEAD(void, FramebufferTexture, GLenum target, GLenum attachment, GLuint texture, GLint level) DECLARE_GL_FUNCTION_END_NO_RETURN(void, FramebufferTexture, target, attachment, texture, level)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, PrimitiveBoundingBox, GLfloat minX, GLfloat minY, GLfloat minZ, GLfloat minW, GLfloat maxX, GLfloat maxY, GLfloat maxZ, GLfloat maxW) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, PrimitiveBoundingBox, minX, minY, minZ, minW, maxX, maxY, maxZ, maxW)
 DECLARE_GL_FUNCTION_HEAD(GLenum, GetGraphicsResetStatus) DECLARE_GL_FUNCTION_END(GLenum, GetGraphicsResetStatus)
-DECLARE_GL_FUNCTION_HEAD(void, ReadnPixels, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, void* data) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ReadnPixels, x, y, width, height, format, type, bufSize, data)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ReadnPixels, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ReadnPixels, x, y, width, height, format, type, bufSize, data)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetnUniformfv, GLuint program, GLint location, GLsizei bufSize, GLfloat* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetnUniformfv, program, location, bufSize, params)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetnUniformiv, GLuint program, GLint location, GLsizei bufSize, GLint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetnUniformiv, program, location, bufSize, params)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetnUniformuiv, GLuint program, GLint location, GLsizei bufSize, GLuint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetnUniformuiv, program, location, bufSize, params)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, MinSampleShading, GLfloat value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, MinSampleShading, value)
-DECLARE_GL_FUNCTION_HEAD(void, PatchParameteri, GLenum pname, GLint value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, PatchParameteri, pname, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, PatchParameteri, GLenum pname, GLint value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, PatchParameteri, pname, value)
 DECLARE_GL_FUNCTION_HEAD(void, TexParameterIiv, GLenum target, GLenum pname, const GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexParameterIiv, target, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, TexParameterIuiv, GLenum target, GLenum pname, const GLuint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexParameterIuiv, target, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetTexParameterIiv, GLenum target, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTexParameterIiv, target, pname, params)
@@ -435,7 +440,7 @@ DECLARE_GL_FUNCTION_HEAD(void, SamplerParameterIuiv, GLuint sampler, GLenum pnam
 DECLARE_GL_FUNCTION_HEAD(void, GetSamplerParameterIiv, GLuint sampler, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetSamplerParameterIiv, sampler, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetSamplerParameterIuiv, GLuint sampler, GLenum pname, GLuint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetSamplerParameterIuiv, sampler, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, TexBuffer, GLenum target, GLenum internalformat, GLuint buffer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexBuffer, target, internalformat, buffer)
-DECLARE_GL_FUNCTION_HEAD(void, TexBufferRange, GLenum target, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexBufferRange, target, internalformat, buffer, offset, size)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, TexBufferRange, GLenum target, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TexBufferRange, target, internalformat, buffer, offset, size)
 DECLARE_GL_FUNCTION_HEAD(void, TexStorage3DMultisample, GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TexStorage3DMultisample, target, samples, internalformat, width, height, depth, fixedsamplelocations)
 DECLARE_GL_FUNCTION_HEAD(void*, MapBufferRange, GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access) DECLARE_GL_FUNCTION_END(void*, MapBufferRange, target, offset, length, access)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, ClearIndex, GLfloat c) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ClearIndex, c)
@@ -910,24 +915,24 @@ DECLARE_GL_FUNCTION_STUB_HEAD(void, ColorP4ui, GLenum type, GLuint color) DECLAR
 DECLARE_GL_FUNCTION_STUB_HEAD(void, ColorP4uiv, GLenum type, const GLuint* color) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ColorP4uiv, type, color)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, SecondaryColorP3ui, GLenum type, GLuint color) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, SecondaryColorP3ui, type, color)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, SecondaryColorP3uiv, GLenum type, const GLuint* color) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, SecondaryColorP3uiv, type, color)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform1d, GLint location, GLdouble x) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform1d, location, x)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform2d, GLint location, GLdouble x, GLdouble y) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform2d, location, x, y)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform3d, GLint location, GLdouble x, GLdouble y, GLdouble z) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform3d, location, x, y, z)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform4d, GLint location, GLdouble x, GLdouble y, GLdouble z, GLdouble w) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform4d, location, x, y, z, w)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform1dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform1dv, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform2dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform2dv, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform3dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform3dv, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, Uniform4dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, Uniform4dv, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix2dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix2dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix3dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix3dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix4dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix4dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix2x3dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix2x3dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix2x4dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix2x4dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix3x2dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix3x2dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix3x4dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix3x4dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix4x2dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix4x2dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, UniformMatrix4x3dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, UniformMatrix4x3dv, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, GetUniformdv, GLuint program, GLint location, GLdouble* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetUniformdv, program, location, params)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform1d, GLint location, GLdouble x) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform1d, location, x)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform2d, GLint location, GLdouble x, GLdouble y) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform2d, location, x, y)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform3d, GLint location, GLdouble x, GLdouble y, GLdouble z) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform3d, location, x, y, z)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform4d, GLint location, GLdouble x, GLdouble y, GLdouble z, GLdouble w) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform4d, location, x, y, z, w)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform1dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform1dv, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform2dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform2dv, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform3dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform3dv, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, Uniform4dv, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, Uniform4dv, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix2dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix2dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix3dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix3dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix4dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix4dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix2x3dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix2x3dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix2x4dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix2x4dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix3x2dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix3x2dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix3x4dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix3x4dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix4x2dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix4x2dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformMatrix4x3dv, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, UniformMatrix4x3dv, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetUniformdv, GLuint program, GLint location, GLdouble* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetUniformdv, program, location, params)
 DECLARE_GL_FUNCTION_STUB_HEAD(GLint, GetSubroutineUniformLocation, GLuint program, GLenum shadertype, const GLchar* name) DECLARE_GL_FUNCTION_STUB_END(GLint, GetSubroutineUniformLocation, program, shadertype, name)
 DECLARE_GL_FUNCTION_STUB_HEAD(GLuint, GetSubroutineIndex, GLuint program, GLenum shadertype, const GLchar* name) DECLARE_GL_FUNCTION_STUB_END(GLuint, GetSubroutineIndex, program, shadertype, name)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetActiveSubroutineUniformiv, GLuint program, GLenum shadertype, GLuint index, GLenum pname, GLint* values) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetActiveSubroutineUniformiv, program, shadertype, index, pname, values)
@@ -937,28 +942,28 @@ DECLARE_GL_FUNCTION_STUB_HEAD(void, UniformSubroutinesuiv, GLenum shadertype, GL
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetUniformSubroutineuiv, GLenum shadertype, GLint location, GLuint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetUniformSubroutineuiv, shadertype, location, params)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetProgramStageiv, GLuint program, GLenum shadertype, GLenum pname, GLint* values) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetProgramStageiv, program, shadertype, pname, values)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, PatchParameterfv, GLenum pname, const GLfloat* values) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, PatchParameterfv, pname, values)
-DECLARE_GL_FUNCTION_HEAD(void, DrawTransformFeedback, GLenum mode, GLuint id) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawTransformFeedback, mode, id)
-DECLARE_GL_FUNCTION_HEAD(void, DrawTransformFeedbackStream, GLenum mode, GLuint id, GLuint stream) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawTransformFeedbackStream, mode, id, stream)
-DECLARE_GL_FUNCTION_HEAD(void, BeginQueryIndexed, GLenum target, GLuint index, GLuint id) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BeginQueryIndexed, target, index, id)
-DECLARE_GL_FUNCTION_HEAD(void, EndQueryIndexed, GLenum target, GLuint index) DECLARE_GL_FUNCTION_END_NO_RETURN(void, EndQueryIndexed, target, index)
-DECLARE_GL_FUNCTION_HEAD(void, GetQueryIndexediv, GLenum target, GLuint index, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetQueryIndexediv, target, index, pname, params)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform1d, GLuint program, GLint location, GLdouble v0) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform1d, program, location, v0)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform1dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform1dv, program, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform2d, GLuint program, GLint location, GLdouble v0, GLdouble v1) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform2d, program, location, v0, v1)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform2dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform2dv, program, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform3d, GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform3d, program, location, v0, v1, v2)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform3dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform3dv, program, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform4d, GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform4d, program, location, v0, v1, v2, v3)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniform4dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniform4dv, program, location, count, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix2dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix2dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix3dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix3dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix4dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix4dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix2x3dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix2x3dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix3x2dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix3x2dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix2x4dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix2x4dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix4x2dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix4x2dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix3x4dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix3x4dv, program, location, count, transpose, value)
-DECLARE_GL_FUNCTION_HEAD(void, ProgramUniformMatrix4x3dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ProgramUniformMatrix4x3dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, DrawTransformFeedback, GLenum mode, GLuint id) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, DrawTransformFeedback, mode, id)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, DrawTransformFeedbackStream, GLenum mode, GLuint id, GLuint stream) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, DrawTransformFeedbackStream, mode, id, stream)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, BeginQueryIndexed, GLenum target, GLuint index, GLuint id) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, BeginQueryIndexed, target, index, id)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, EndQueryIndexed, GLenum target, GLuint index) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, EndQueryIndexed, target, index)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetQueryIndexediv, GLenum target, GLuint index, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetQueryIndexediv, target, index, pname, params)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform1d, GLuint program, GLint location, GLdouble v0) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform1d, program, location, v0)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform1dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform1dv, program, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform2d, GLuint program, GLint location, GLdouble v0, GLdouble v1) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform2d, program, location, v0, v1)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform2dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform2dv, program, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform3d, GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform3d, program, location, v0, v1, v2)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform3dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform3dv, program, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform4d, GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform4d, program, location, v0, v1, v2, v3)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniform4dv, GLuint program, GLint location, GLsizei count, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniform4dv, program, location, count, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix2dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix2dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix3dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix3dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix4dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix4dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix2x3dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix2x3dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix3x2dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix3x2dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix2x4dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix2x4dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix4x2dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix4x2dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix3x4dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix3x4dv, program, location, count, transpose, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ProgramUniformMatrix4x3dv, GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ProgramUniformMatrix4x3dv, program, location, count, transpose, value)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, VertexAttribL1d, GLuint index, GLdouble x) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, VertexAttribL1d, index, x)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, VertexAttribL2d, GLuint index, GLdouble x, GLdouble y) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, VertexAttribL2d, index, x, y)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, VertexAttribL3d, GLuint index, GLdouble x, GLdouble y, GLdouble z) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, VertexAttribL3d, index, x, y, z)
@@ -983,8 +988,8 @@ DECLARE_GL_FUNCTION_HEAD(void, DrawArraysInstancedBaseInstance, GLenum mode, GLi
 DECLARE_GL_FUNCTION_HEAD(void, DrawElementsInstancedBaseInstance, GLenum mode, GLsizei count, GLenum type, const void* indices, GLsizei instancecount, GLuint baseinstance) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawElementsInstancedBaseInstance, mode, count, type, indices, instancecount, baseinstance)
 DECLARE_GL_FUNCTION_HEAD(void, DrawElementsInstancedBaseVertexBaseInstance, GLenum mode, GLsizei count, GLenum type, const void* indices, GLsizei instancecount, GLint basevertex, GLuint baseinstance) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawElementsInstancedBaseVertexBaseInstance, mode, count, type, indices, instancecount, basevertex, baseinstance)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetActiveAtomicCounterBufferiv, GLuint program, GLuint bufferIndex, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetActiveAtomicCounterBufferiv, program, bufferIndex, pname, params)
-DECLARE_GL_FUNCTION_HEAD(void, DrawTransformFeedbackInstanced, GLenum mode, GLuint id, GLsizei instancecount) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawTransformFeedbackInstanced, mode, id, instancecount)
-DECLARE_GL_FUNCTION_HEAD(void, DrawTransformFeedbackStreamInstanced, GLenum mode, GLuint id, GLuint stream, GLsizei instancecount) DECLARE_GL_FUNCTION_END_NO_RETURN(void, DrawTransformFeedbackStreamInstanced, mode, id, stream, instancecount)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, DrawTransformFeedbackInstanced, GLenum mode, GLuint id, GLsizei instancecount) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, DrawTransformFeedbackInstanced, mode, id, instancecount)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, DrawTransformFeedbackStreamInstanced, GLenum mode, GLuint id, GLuint stream, GLsizei instancecount) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, DrawTransformFeedbackStreamInstanced, mode, id, stream, instancecount)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, ClearBufferData, GLenum target, GLenum internalformat, GLenum format, GLenum type, const void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ClearBufferData, target, internalformat, format, type, data)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, ClearBufferSubData, GLenum target, GLenum internalformat, GLintptr offset, GLsizeiptr size, GLenum format, GLenum type, const void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ClearBufferSubData, target, internalformat, offset, size, format, type, data)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetInternalformati64v, GLenum target, GLenum internalformat, GLenum pname, GLsizei count, GLint64* params) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetInternalformati64v, target, internalformat, pname, count, params)
@@ -997,7 +1002,7 @@ DECLARE_GL_FUNCTION_HEAD(void, MultiDrawElementsIndirect, GLenum mode, GLenum ty
 DECLARE_GL_FUNCTION_HEAD(GLint, GetProgramResourceLocationIndex, GLuint program, GLenum programInterface, const GLchar* name) DECLARE_GL_FUNCTION_END(GLint, GetProgramResourceLocationIndex, program, programInterface, name)
 DECLARE_GL_FUNCTION_HEAD(void, ShaderStorageBlockBinding, GLuint program, GLuint storageBlockIndex, GLuint storageBlockBinding) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ShaderStorageBlockBinding, program, storageBlockIndex, storageBlockBinding)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, TextureView, GLuint texture, GLenum target, GLuint origtexture, GLenum internalformat, GLuint minlevel, GLuint numlevels, GLuint minlayer, GLuint numlayers) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TextureView, texture, target, origtexture, internalformat, minlevel, numlevels, minlayer, numlayers)
-DECLARE_GL_FUNCTION_HEAD(void, VertexAttribLFormat, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexAttribLFormat, attribindex, size, type, relativeoffset)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, VertexAttribLFormat, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, VertexAttribLFormat, attribindex, size, type, relativeoffset)
 DECLARE_GL_FUNCTION_HEAD(void, BufferStorage, GLenum target, GLsizeiptr size, const void* data, GLbitfield flags) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BufferStorage, target, size, data, flags)
 DECLARE_GL_FUNCTION_HEAD(void, ClearTexImage, GLuint texture, GLint level, GLenum format, GLenum type, const void* data) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ClearTexImage, texture, level, format, type, data)
 DECLARE_GL_FUNCTION_HEAD(void, ClearTexSubImage, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void* data) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ClearTexSubImage, texture, level, xoffset, yoffset, zoffset, width, height, depth, format, type, data)
@@ -1008,12 +1013,12 @@ DECLARE_GL_FUNCTION_HEAD(void, BindSamplers, GLuint first, GLsizei count, const
 DECLARE_GL_FUNCTION_STUB_HEAD(void, BindImageTextures, GLuint first, GLsizei count, const GLuint* textures) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, BindImageTextures, first, count, textures)
 DECLARE_GL_FUNCTION_HEAD(void, BindVertexBuffers, GLuint first, GLsizei count, const GLuint* buffers, const GLintptr* offsets, const GLsizei* strides) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindVertexBuffers, first, count, buffers, offsets, strides)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, ClipControl, GLenum origin, GLenum depth) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ClipControl, origin, depth)
-DECLARE_GL_FUNCTION_HEAD(void, CreateTransformFeedbacks, GLsizei n, GLuint* ids) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateTransformFeedbacks, n, ids)
-DECLARE_GL_FUNCTION_HEAD(void, TransformFeedbackBufferBase, GLuint xfb, GLuint index, GLuint buffer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TransformFeedbackBufferBase, xfb, index, buffer)
-DECLARE_GL_FUNCTION_HEAD(void, TransformFeedbackBufferRange, GLuint xfb, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TransformFeedbackBufferRange, xfb, index, buffer, offset, size)
-DECLARE_GL_FUNCTION_HEAD(void, GetTransformFeedbackiv, GLuint xfb, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTransformFeedbackiv, xfb, pname, param)
-DECLARE_GL_FUNCTION_HEAD(void, GetTransformFeedbacki_v, GLuint xfb, GLenum pname, GLuint index, GLint* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTransformFeedbacki_v, xfb, pname, index, param)
-DECLARE_GL_FUNCTION_HEAD(void, GetTransformFeedbacki64_v, GLuint xfb, GLenum pname, GLuint index, GLint64* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTransformFeedbacki64_v, xfb, pname, index, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, CreateTransformFeedbacks, GLsizei n, GLuint* ids) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CreateTransformFeedbacks, n, ids)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, TransformFeedbackBufferBase, GLuint xfb, GLuint index, GLuint buffer) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TransformFeedbackBufferBase, xfb, index, buffer)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, TransformFeedbackBufferRange, GLuint xfb, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TransformFeedbackBufferRange, xfb, index, buffer, offset, size)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetTransformFeedbackiv, GLuint xfb, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetTransformFeedbackiv, xfb, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetTransformFeedbacki_v, GLuint xfb, GLenum pname, GLuint index, GLint* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetTransformFeedbacki_v, xfb, pname, index, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetTransformFeedbacki64_v, GLuint xfb, GLenum pname, GLuint index, GLint64* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetTransformFeedbacki64_v, xfb, pname, index, param)
 DECLARE_GL_FUNCTION_HEAD(void, CreateBuffers, GLsizei n, GLuint* buffers) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateBuffers, n, buffers)
 DECLARE_GL_FUNCTION_HEAD(void, NamedBufferStorage, GLuint buffer, GLsizeiptr size, const void* data, GLbitfield flags) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedBufferStorage, buffer, size, data, flags)
 DECLARE_GL_FUNCTION_HEAD(void, NamedBufferData, GLuint buffer, GLsizeiptr size, const void* data, GLenum usage) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedBufferData, buffer, size, data, usage)
@@ -1026,32 +1031,32 @@ DECLARE_GL_FUNCTION_HEAD(void, FlushMappedNamedBufferRange, GLuint buffer, GLint
 DECLARE_GL_FUNCTION_HEAD(void, GetNamedBufferParameteriv, GLuint buffer, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedBufferParameteriv, buffer, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetNamedBufferParameteri64v, GLuint buffer, GLenum pname, GLint64* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedBufferParameteri64v, buffer, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetNamedBufferPointerv, GLuint buffer, GLenum pname, void** params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedBufferPointerv, buffer, pname, params)
-DECLARE_GL_FUNCTION_HEAD(void, GetNamedBufferSubData, GLuint buffer, GLintptr offset, GLsizeiptr size, void* data) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedBufferSubData, buffer, offset, size, data)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetNamedBufferSubData, GLuint buffer, GLintptr offset, GLsizeiptr size, void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetNamedBufferSubData, buffer, offset, size, data)
 DECLARE_GL_FUNCTION_HEAD(void, CreateFramebuffers, GLsizei n, GLuint* framebuffers) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateFramebuffers, n, framebuffers)
 DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferRenderbuffer, GLuint framebuffer, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferRenderbuffer, framebuffer, attachment, renderbuffertarget, renderbuffer)
-DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferParameteri, GLuint framebuffer, GLenum pname, GLint param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferParameteri, framebuffer, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, NamedFramebufferParameteri, GLuint framebuffer, GLenum pname, GLint param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, NamedFramebufferParameteri, framebuffer, pname, param)
 DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferTexture, GLuint framebuffer, GLenum attachment, GLuint texture, GLint level) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferTexture, framebuffer, attachment, texture, level)
 DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferTextureLayer, GLuint framebuffer, GLenum attachment, GLuint texture, GLint level, GLint layer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferTextureLayer, framebuffer, attachment, texture, level, layer)
 DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferDrawBuffer, GLuint framebuffer, GLenum buf) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferDrawBuffer, framebuffer, buf)
 DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferDrawBuffers, GLuint framebuffer, GLsizei n, const GLenum* bufs) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferDrawBuffers, framebuffer, n, bufs)
 DECLARE_GL_FUNCTION_HEAD(void, NamedFramebufferReadBuffer, GLuint framebuffer, GLenum src) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedFramebufferReadBuffer, framebuffer, src)
-DECLARE_GL_FUNCTION_HEAD(void, InvalidateNamedFramebufferData, GLuint framebuffer, GLsizei numAttachments, const GLenum* attachments) DECLARE_GL_FUNCTION_END_NO_RETURN(void, InvalidateNamedFramebufferData, framebuffer, numAttachments, attachments)
-DECLARE_GL_FUNCTION_HEAD(void, InvalidateNamedFramebufferSubData, GLuint framebuffer, GLsizei numAttachments, const GLenum* attachments, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, InvalidateNamedFramebufferSubData, framebuffer, numAttachments, attachments, x, y, width, height)
-DECLARE_GL_FUNCTION_HEAD(void, ClearNamedFramebufferiv, GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLint* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ClearNamedFramebufferiv, framebuffer, buffer, drawbuffer, value)
-DECLARE_GL_FUNCTION_HEAD(void, ClearNamedFramebufferuiv, GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLuint* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ClearNamedFramebufferuiv, framebuffer, buffer, drawbuffer, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, InvalidateNamedFramebufferData, GLuint framebuffer, GLsizei numAttachments, const GLenum* attachments) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, InvalidateNamedFramebufferData, framebuffer, numAttachments, attachments)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, InvalidateNamedFramebufferSubData, GLuint framebuffer, GLsizei numAttachments, const GLenum* attachments, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, InvalidateNamedFramebufferSubData, framebuffer, numAttachments, attachments, x, y, width, height)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ClearNamedFramebufferiv, GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLint* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ClearNamedFramebufferiv, framebuffer, buffer, drawbuffer, value)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, ClearNamedFramebufferuiv, GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLuint* value) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, ClearNamedFramebufferuiv, framebuffer, buffer, drawbuffer, value)
 DECLARE_GL_FUNCTION_HEAD(void, ClearNamedFramebufferfv, GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLfloat* value) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ClearNamedFramebufferfv, framebuffer, buffer, drawbuffer, value)
 DECLARE_GL_FUNCTION_HEAD(void, ClearNamedFramebufferfi, GLuint framebuffer, GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil) DECLARE_GL_FUNCTION_END_NO_RETURN(void, ClearNamedFramebufferfi, framebuffer, buffer, drawbuffer, depth, stencil)
 DECLARE_GL_FUNCTION_HEAD(void, BlitNamedFramebuffer, GLuint readFramebuffer, GLuint drawFramebuffer, GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BlitNamedFramebuffer, readFramebuffer, drawFramebuffer, srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter)
 DECLARE_GL_FUNCTION_HEAD(GLenum, CheckNamedFramebufferStatus, GLuint framebuffer, GLenum target) DECLARE_GL_FUNCTION_END(GLenum, CheckNamedFramebufferStatus, framebuffer, target)
-DECLARE_GL_FUNCTION_HEAD(void, GetNamedFramebufferParameteriv, GLuint framebuffer, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedFramebufferParameteriv, framebuffer, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetNamedFramebufferParameteriv, GLuint framebuffer, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetNamedFramebufferParameteriv, framebuffer, pname, param)
 DECLARE_GL_FUNCTION_HEAD(void, GetNamedFramebufferAttachmentParameteriv, GLuint framebuffer, GLenum attachment, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedFramebufferAttachmentParameteriv, framebuffer, attachment, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, CreateRenderbuffers, GLsizei n, GLuint* renderbuffers) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateRenderbuffers, n, renderbuffers)
 DECLARE_GL_FUNCTION_HEAD(void, NamedRenderbufferStorage, GLuint renderbuffer, GLenum internalformat, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedRenderbufferStorage, renderbuffer, internalformat, width, height)
 DECLARE_GL_FUNCTION_HEAD(void, NamedRenderbufferStorageMultisample, GLuint renderbuffer, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, NamedRenderbufferStorageMultisample, renderbuffer, samples, internalformat, width, height)
 DECLARE_GL_FUNCTION_HEAD(void, GetNamedRenderbufferParameteriv, GLuint renderbuffer, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetNamedRenderbufferParameteriv, renderbuffer, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, CreateTextures, GLenum target, GLsizei n, GLuint* textures) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateTextures, target, n, textures)
-DECLARE_GL_FUNCTION_HEAD(void, TextureBuffer, GLuint texture, GLenum internalformat, GLuint buffer) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureBuffer, texture, internalformat, buffer)
-DECLARE_GL_FUNCTION_HEAD(void, TextureBufferRange, GLuint texture, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureBufferRange, texture, internalformat, buffer, offset, size)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, TextureBuffer, GLuint texture, GLenum internalformat, GLuint buffer) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TextureBuffer, texture, internalformat, buffer)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, TextureBufferRange, GLuint texture, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, TextureBufferRange, texture, internalformat, buffer, offset, size)
 DECLARE_GL_FUNCTION_HEAD(void, TextureStorage1D, GLuint texture, GLsizei levels, GLenum internalformat, GLsizei width) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureStorage1D, texture, levels, internalformat, width)
 DECLARE_GL_FUNCTION_HEAD(void, TextureStorage2D, GLuint texture, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureStorage2D, texture, levels, internalformat, width, height)
 DECLARE_GL_FUNCTION_HEAD(void, TextureStorage3D, GLuint texture, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureStorage3D, texture, levels, internalformat, width, height, depth)
@@ -1063,9 +1068,9 @@ DECLARE_GL_FUNCTION_HEAD(void, TextureSubImage3D, GLuint texture, GLint level, G
 DECLARE_GL_FUNCTION_STUB_HEAD(void, CompressedTextureSubImage1D, GLuint texture, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CompressedTextureSubImage1D, texture, level, xoffset, width, format, imageSize, data)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, CompressedTextureSubImage2D, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CompressedTextureSubImage2D, texture, level, xoffset, yoffset, width, height, format, imageSize, data)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, CompressedTextureSubImage3D, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void* data) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CompressedTextureSubImage3D, texture, level, xoffset, yoffset, zoffset, width, height, depth, format, imageSize, data)
-DECLARE_GL_FUNCTION_HEAD(void, CopyTextureSubImage1D, GLuint texture, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CopyTextureSubImage1D, texture, level, xoffset, x, y, width)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, CopyTextureSubImage1D, GLuint texture, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CopyTextureSubImage1D, texture, level, xoffset, x, y, width)
 DECLARE_GL_FUNCTION_HEAD(void, CopyTextureSubImage2D, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CopyTextureSubImage2D, texture, level, xoffset, yoffset, x, y, width, height)
-DECLARE_GL_FUNCTION_HEAD(void, CopyTextureSubImage3D, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CopyTextureSubImage3D, texture, level, xoffset, yoffset, zoffset, x, y, width, height)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, CopyTextureSubImage3D, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CopyTextureSubImage3D, texture, level, xoffset, yoffset, zoffset, x, y, width, height)
 DECLARE_GL_FUNCTION_HEAD(void, TextureParameterf, GLuint texture, GLenum pname, GLfloat param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureParameterf, texture, pname, param)
 DECLARE_GL_FUNCTION_HEAD(void, TextureParameterfv, GLuint texture, GLenum pname, const GLfloat* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureParameterfv, texture, pname, param)
 DECLARE_GL_FUNCTION_HEAD(void, TextureParameteri, GLuint texture, GLenum pname, GLint param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, TextureParameteri, texture, pname, param)
@@ -1075,7 +1080,7 @@ DECLARE_GL_FUNCTION_HEAD(void, TextureParameteriv, GLuint texture, GLenum pname,
 DECLARE_GL_FUNCTION_HEAD(void, GenerateTextureMipmap, GLuint texture) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GenerateTextureMipmap, texture)
 DECLARE_GL_FUNCTION_HEAD(void, BindTextureUnit, GLuint unit, GLuint texture) DECLARE_GL_FUNCTION_END_NO_RETURN(void, BindTextureUnit, unit, texture)
 DECLARE_GL_FUNCTION_HEAD(void, GetTextureImage, GLuint texture, GLint level, GLenum format, GLenum type, GLsizei bufSize, void* pixels) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTextureImage, texture, level, format, type, bufSize, pixels)
-DECLARE_GL_FUNCTION_HEAD(void, GetCompressedTextureImage, GLuint texture, GLint level, GLsizei bufSize, void* pixels) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetCompressedTextureImage, texture, level, bufSize, pixels)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetCompressedTextureImage, GLuint texture, GLint level, GLsizei bufSize, void* pixels) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetCompressedTextureImage, texture, level, bufSize, pixels)
 DECLARE_GL_FUNCTION_HEAD(void, GetTextureLevelParameterfv, GLuint texture, GLint level, GLenum pname, GLfloat* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTextureLevelParameterfv, texture, level, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetTextureLevelParameteriv, GLuint texture, GLint level, GLenum pname, GLint* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTextureLevelParameteriv, texture, level, pname, params)
 DECLARE_GL_FUNCTION_HEAD(void, GetTextureParameterfv, GLuint texture, GLenum pname, GLfloat* params) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTextureParameterfv, texture, pname, params)
@@ -1091,18 +1096,18 @@ DECLARE_GL_FUNCTION_HEAD(void, VertexArrayVertexBuffers, GLuint vaobj, GLuint fi
 DECLARE_GL_FUNCTION_HEAD(void, VertexArrayAttribBinding, GLuint vaobj, GLuint attribindex, GLuint bindingindex) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexArrayAttribBinding, vaobj, attribindex, bindingindex)
 DECLARE_GL_FUNCTION_HEAD(void, VertexArrayAttribFormat, GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLboolean normalized, GLuint relativeoffset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexArrayAttribFormat, vaobj, attribindex, size, type, normalized, relativeoffset)
 DECLARE_GL_FUNCTION_HEAD(void, VertexArrayAttribIFormat, GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexArrayAttribIFormat, vaobj, attribindex, size, type, relativeoffset)
-DECLARE_GL_FUNCTION_HEAD(void, VertexArrayAttribLFormat, GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexArrayAttribLFormat, vaobj, attribindex, size, type, relativeoffset)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, VertexArrayAttribLFormat, GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, VertexArrayAttribLFormat, vaobj, attribindex, size, type, relativeoffset)
 DECLARE_GL_FUNCTION_HEAD(void, VertexArrayBindingDivisor, GLuint vaobj, GLuint bindingindex, GLuint divisor) DECLARE_GL_FUNCTION_END_NO_RETURN(void, VertexArrayBindingDivisor, vaobj, bindingindex, divisor)
-DECLARE_GL_FUNCTION_HEAD(void, GetVertexArrayiv, GLuint vaobj, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetVertexArrayiv, vaobj, pname, param)
-DECLARE_GL_FUNCTION_HEAD(void, GetVertexArrayIndexediv, GLuint vaobj, GLuint index, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetVertexArrayIndexediv, vaobj, index, pname, param)
-DECLARE_GL_FUNCTION_HEAD(void, GetVertexArrayIndexed64iv, GLuint vaobj, GLuint index, GLenum pname, GLint64* param) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetVertexArrayIndexed64iv, vaobj, index, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetVertexArrayiv, GLuint vaobj, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetVertexArrayiv, vaobj, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetVertexArrayIndexediv, GLuint vaobj, GLuint index, GLenum pname, GLint* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetVertexArrayIndexediv, vaobj, index, pname, param)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetVertexArrayIndexed64iv, GLuint vaobj, GLuint index, GLenum pname, GLint64* param) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetVertexArrayIndexed64iv, vaobj, index, pname, param)
 DECLARE_GL_FUNCTION_HEAD(void, CreateSamplers, GLsizei n, GLuint* samplers) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateSamplers, n, samplers)
-DECLARE_GL_FUNCTION_HEAD(void, CreateProgramPipelines, GLsizei n, GLuint* pipelines) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateProgramPipelines, n, pipelines)
-DECLARE_GL_FUNCTION_HEAD(void, CreateQueries, GLenum target, GLsizei n, GLuint* ids) DECLARE_GL_FUNCTION_END_NO_RETURN(void, CreateQueries, target, n, ids)
-DECLARE_GL_FUNCTION_HEAD(void, GetQueryBufferObjecti64v, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetQueryBufferObjecti64v, id, buffer, pname, offset)
-DECLARE_GL_FUNCTION_HEAD(void, GetQueryBufferObjectiv, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetQueryBufferObjectiv, id, buffer, pname, offset)
-DECLARE_GL_FUNCTION_HEAD(void, GetQueryBufferObjectui64v, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetQueryBufferObjectui64v, id, buffer, pname, offset)
-DECLARE_GL_FUNCTION_HEAD(void, GetQueryBufferObjectuiv, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetQueryBufferObjectuiv, id, buffer, pname, offset)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, CreateProgramPipelines, GLsizei n, GLuint* pipelines) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CreateProgramPipelines, n, pipelines)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, CreateQueries, GLenum target, GLsizei n, GLuint* ids) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, CreateQueries, target, n, ids)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetQueryBufferObjecti64v, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetQueryBufferObjecti64v, id, buffer, pname, offset)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetQueryBufferObjectiv, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetQueryBufferObjectiv, id, buffer, pname, offset)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetQueryBufferObjectui64v, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetQueryBufferObjectui64v, id, buffer, pname, offset)
+DECLARE_GL_FUNCTION_STUB_HEAD(void, GetQueryBufferObjectuiv, GLuint id, GLuint buffer, GLenum pname, GLintptr offset) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetQueryBufferObjectuiv, id, buffer, pname, offset)
 DECLARE_GL_FUNCTION_HEAD(void, GetTextureSubImage, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, GLsizei bufSize, void* pixels) DECLARE_GL_FUNCTION_END_NO_RETURN(void, GetTextureSubImage, texture, level, xoffset, yoffset, zoffset, width, height, depth, format, type, bufSize, pixels)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetCompressedTextureSubImage, GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLsizei bufSize, void* pixels) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetCompressedTextureSubImage, texture, level, xoffset, yoffset, zoffset, width, height, depth, bufSize, pixels)
 DECLARE_GL_FUNCTION_STUB_HEAD(void, GetnCompressedTexImage, GLenum target, GLint lod, GLsizei bufSize, void* pixels) DECLARE_GL_FUNCTION_STUB_END_NO_RETURN(void, GetnCompressedTexImage, target, lod, bufSize, pixels)

MobileGL/MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.h

@@ -14,8 +14,6 @@
 namespace MobileGL::MG_Impl::GLImpl {
     /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
     void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
-    void ReadnPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize,
-                     void* data);
     void ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
     void ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value);
     void ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint* value);
@@ -58,19 +56,7 @@ namespace MobileGL::MG_Impl::GLImpl {
     void NamedFramebufferReadBuffer(GLuint framebuffer, GLenum src);
     void ClearNamedFramebufferfv(GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLfloat* value);
     void ClearNamedFramebufferfi(GLuint framebuffer, GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
-    void InvalidateNamedFramebufferData(GLuint framebuffer, GLsizei numAttachments, const GLenum* attachments);
-    void InvalidateNamedFramebufferSubData(GLuint framebuffer, GLsizei numAttachments, const GLenum* attachments,
-                                           GLint x, GLint y, GLsizei width, GLsizei height);
-    void InvalidateFramebuffer(GLenum target, GLsizei numAttachments, const GLenum* attachments);
-    void InvalidateSubFramebuffer(GLenum target, GLsizei numAttachments, const GLenum* attachments, GLint x, GLint y,
-                                  GLsizei width, GLsizei height);
-    void ClearNamedFramebufferiv(GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLint* value);
-    void ClearNamedFramebufferuiv(GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLuint* value);
     GLenum CheckNamedFramebufferStatus(GLuint framebuffer, GLenum target);
-    void GetFramebufferParameteriv(GLenum target, GLenum pname, GLint* params);
-    void FramebufferParameteri(GLenum target, GLenum pname, GLint param);
-    void GetNamedFramebufferParameteriv(GLuint framebuffer, GLenum pname, GLint* params);
-    void NamedFramebufferParameteri(GLuint framebuffer, GLenum pname, GLint param);
     void GetNamedFramebufferAttachmentParameteriv(GLuint framebuffer, GLenum attachment, GLenum pname, GLint* params);
     void BlitNamedFramebuffer(GLuint readFramebuffer, GLuint drawFramebuffer, GLint srcX0, GLint srcY0, GLint srcX1,
                               GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask,

MobileGL/MG_Impl/GLImpl/Framebuffer/Validators.cpp

@@ -7,7 +7,6 @@
 // End of Source File Header
 
 #include "Validators.h"
-#include <MG_Backend/BackendObjects.h>
 #include <MG_State/GLState/Core.h>
 #include <MG_State/GLState/ErrorState/Error.h>
 #include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
@@ -61,26 +60,6 @@ namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl {
         return true;
     }
 
-    Bool ValidateColorAttachmentInRange(FramebufferAttachmentType attachment, const char* caller) {
-        const auto first = static_cast<SizeT>(FramebufferAttachmentType::Color0);
-        const auto index = static_cast<SizeT>(attachment);
-        if (index < first) return true;
-        const auto colorIndex = index - first;
-        const auto limit = static_cast<SizeT>(
-            MG_Backend::pActiveBackendObject ? MG_Backend::pActiveBackendObject->GetDynamicParameters()
-                                                   .MaxColorAttachments
-                                             : static_cast<Int>(MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS));
-        if (colorIndex >= limit) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl/FramebufferImpl", caller,
-                    std::format("Colour attachment {} is beyond GL_MAX_COLOR_ATTACHMENTS ({}).", colorIndex, limit)));
-            return false;
-        }
-        return true;
-    }
-
     Bool ValidateRenderbufferTarget(RenderbufferTarget target) {
         if (target == RenderbufferTarget::Unknown) {
             using namespace MG_Util;
@@ -118,100 +97,4 @@ namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl {
                                          std::format("Renderbuffer name {} is not valid.", index)));
         return false;
     }
-
-    Bool ValidateFramebufferParameterPname(GLenum pname, Bool isDefaultFramebuffer, Bool forSetter,
-                                           const char* caller) {
-        Bool isDefaultParameter = false;
-        switch (pname) {
-        case GL_FRAMEBUFFER_DEFAULT_WIDTH:
-        case GL_FRAMEBUFFER_DEFAULT_HEIGHT:
-        case GL_FRAMEBUFFER_DEFAULT_LAYERS:
-        case GL_FRAMEBUFFER_DEFAULT_SAMPLES:
-        case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS:
-            isDefaultParameter = true;
-            break;
-        case GL_DOUBLEBUFFER:
-        case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
-        case GL_IMPLEMENTATION_COLOR_READ_TYPE:
-        case GL_SAMPLES:
-        case GL_SAMPLE_BUFFERS:
-        case GL_STEREO:
-            // Queryable only; glFramebufferParameteri sets none of these.
-            if (forSetter) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl/FramebufferImpl", caller,
-                        std::format("pname {} is not settable on a framebuffer.",
-                                    MG_Util::ConvertGLEnumToString(pname))));
-                return false;
-            }
-            break;
-        default:
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl/FramebufferImpl", caller,
-                    std::format("pname {} is not a framebuffer parameter.",
-                                MG_Util::ConvertGLEnumToString(pname))));
-            return false;
-        }
-
-        // The default framebuffer has no DEFAULT_* state of its own - its shape comes from the
-        // surface - so those names are accepted enums it simply cannot answer or accept.
-        if (isDefaultFramebuffer && isDefaultParameter) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl/FramebufferImpl", caller,
-                    std::format("pname {} does not apply to the default framebuffer.",
-                                MG_Util::ConvertGLEnumToString(pname))));
-            return false;
-        }
-        return true;
-    }
-
-    Bool ValidateReadFramebufferForCopy(const char* caller) {
-        auto& framebufferObject =
-            MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read).GetBoundObject();
-        if (!framebufferObject || !framebufferObject->CheckCompleteness()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidFramebufferOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", caller,
-                                             "Read framebuffer is not framebuffer complete."));
-            return false;
-        }
-
-        const FramebufferAttachmentType readBuffer = framebufferObject->GetReadBuffer();
-        if (readBuffer == FramebufferAttachmentType::None ||
-            !framebufferObject->GetAttachment(readBuffer).IsValid()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", caller,
-                                             "Read buffer names no attachment of the read framebuffer."));
-            return false;
-        }
-
-        // SAMPLE_BUFFERS is one whenever the read buffer resolves to multisample storage. A
-        // multisample texture says so by its target - its sample count can legally be one - while a
-        // renderbuffer says so by having been given a non-zero sample count.
-        const auto& readAttachment = framebufferObject->GetAttachment(readBuffer);
-        Bool isMultisampled = false;
-        if (readAttachment.IsRenderbuffer() && readAttachment.GetRenderbuffer()) {
-            isMultisampled = readAttachment.GetRenderbuffer()->GetSamples() > 0;
-        } else if (readAttachment.IsTexture() && readAttachment.GetTexture()) {
-            const auto target = readAttachment.GetTexture()->GetTarget();
-            isMultisampled = target == TextureTarget::Texture2DMultisample ||
-                             target == TextureTarget::Texture2DMultisampleArray;
-        }
-        if (isMultisampled) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", caller,
-                                             "Cannot copy from a multisampled read framebuffer."));
-            return false;
-        }
-
-        return true;
-    }
 } // namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl

MobileGL/MG_Impl/GLImpl/Framebuffer/Validators.h

@@ -14,21 +14,6 @@ namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl {
     Bool ValidateFramebufferTarget(FramebufferTarget target);
     Bool ValidateFramebufferName(Uint index, Bool allowZero = true);
     Bool ValidateFramebufferAttachmentType(FramebufferAttachmentType attachment);
-    // GL_COLOR_ATTACHMENTn is a token per n up to 31, but only the first GL_MAX_COLOR_ATTACHMENTS of
-    // them name an attachment point of a framebuffer object; the rest are INVALID_OPERATION for the
-    // attaching entry points (GL 4.6 core 9.2.7). Non-colour attachments pass through unchanged.
-    Bool ValidateColorAttachmentInRange(FramebufferAttachmentType attachment, const char* caller);
     Bool ValidateRenderbufferTarget(RenderbufferTarget target);
     Bool ValidateRenderbufferName(Uint index, Bool allowZero = true);
-    // The read-framebuffer preconditions the CopyTexSubImage family shares (GL 4.6 core 8.6): the
-    // read framebuffer must be complete, its read buffer must name a real attachment, and it must
-    // not be multisampled. Incompleteness is INVALID_FRAMEBUFFER_OPERATION, the other two are
-    // INVALID_OPERATION.
-    Bool ValidateReadFramebufferForCopy(const char* caller);
-    // The pname sets of glGet/FramebufferParameteri (GL 4.6 core 9.2.3). Order matters and is part
-    // of the contract: a name outside the table is INVALID_ENUM, and only then is a name that the
-    // DEFAULT framebuffer does not answer INVALID_OPERATION. Testing the framebuffer kind first
-    // would turn GL_FRAMEBUFFER_DEFAULT_WIDTH on framebuffer zero into the wrong error.
-    Bool ValidateFramebufferParameterPname(GLenum pname, Bool isDefaultFramebuffer, Bool forSetter,
-                                           const char* caller);
 } // namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl

MobileGL/MG_Impl/GLImpl/Getter/GL_Getter.cpp

@@ -213,13 +213,8 @@ namespace MobileGL::MG_Impl::GLImpl {
 
             GLint maxSamples = 0;
             for (const auto& attachment : drawFbo->GetAllAttachmentObjects()) {
-                if (attachment.IsRenderbuffer() && attachment.GetRenderbuffer()) {
-                    maxSamples = std::max(maxSamples, static_cast<GLint>(attachment.GetRenderbuffer()->GetSamples()));
-                } else if (attachment.IsTexture() && attachment.GetTexture()) {
-                    // Multisample texture attachments count too (GL_SAMPLE_BUFFERS must
-                    // report 1 for any multisampled draw framebuffer).
-                    maxSamples = std::max(maxSamples, static_cast<GLint>(attachment.GetTexture()->GetSamples()));
-                }
+                if (!attachment.IsRenderbuffer() || !attachment.GetRenderbuffer()) continue;
+                maxSamples = std::max(maxSamples, static_cast<GLint>(attachment.GetRenderbuffer()->GetSamples()));
             }
             return maxSamples;
         }
@@ -470,14 +465,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_STENCIL_TEST:
             *params = MG_State::pGLContext->IsCapabilityEnabled(CapabilityInput::StencilTest) ? GL_TRUE : GL_FALSE;
             return;
-        case GL_MIN_FRAGMENT_INTERPOLATION_OFFSET:
-        case GL_MAX_FRAGMENT_INTERPOLATION_OFFSET:
-        case GL_FRAGMENT_INTERPOLATION_OFFSET_BITS: {
-            GLfloat value = 0.0f;
-            GetFloatv(pname, &value);
-            *params = value != 0.0f ? GL_TRUE : GL_FALSE;
-            return;
-        }
         default:
             break;
         }
@@ -533,19 +520,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             params[1] = dynamicParameters.ViewportBoundsRangeMax;
             return;
         }
-        case GL_MIN_FRAGMENT_INTERPOLATION_OFFSET:
-        case GL_MAX_FRAGMENT_INTERPOLATION_OFFSET:
-        case GL_FRAGMENT_INTERPOLATION_OFFSET_BITS: {
-            const auto& dynamicParameters = MG_Backend::pActiveBackendObject->GetDynamicParameters();
-            if (pname == GL_MIN_FRAGMENT_INTERPOLATION_OFFSET) {
-                params[0] = dynamicParameters.MinFragmentInterpolationOffset;
-            } else if (pname == GL_MAX_FRAGMENT_INTERPOLATION_OFFSET) {
-                params[0] = dynamicParameters.MaxFragmentInterpolationOffset;
-            } else {
-                params[0] = static_cast<GLfloat>(dynamicParameters.FragmentInterpolationOffsetBits);
-            }
-            return;
-        }
         case GL_DEPTH_CLEAR_VALUE:
             params[0] = MG_State::pGLContext->GetClearDepth();
             return;
@@ -671,40 +645,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
 
         switch (target) {
-        // The vertex buffer binding points of the vertex array object that is bound. Indexed by
-        // binding point, not by attribute (GL 4.6 core 10.3.1).
-        case GL_VERTEX_BINDING_BUFFER:
-        case GL_VERTEX_BINDING_DIVISOR:
-        case GL_VERTEX_BINDING_OFFSET:
-        case GL_VERTEX_BINDING_STRIDE: {
-            if (index >= VertexArrayImpl::GetMaxVertexAttribBindings()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                                 "Vertex buffer binding index is out of range."));
-                return;
-            }
-            const auto& vao = MG_State::pGLContext->GetBoundVertexArray();
-            if (!vao) {
-                *data = 0;
-                return;
-            }
-            const auto& binding = vao->GetBindingPoint(index);
-            switch (target) {
-            case GL_VERTEX_BINDING_BUFFER:
-                *data = binding.Buffer ? static_cast<GLint>(binding.Buffer->GetExternalIndex()) : 0;
-                return;
-            case GL_VERTEX_BINDING_DIVISOR:
-                *data = static_cast<GLint>(binding.Divisor);
-                return;
-            case GL_VERTEX_BINDING_OFFSET:
-                *data = static_cast<GLint>(binding.Offset);
-                return;
-            default:
-                *data = static_cast<GLint>(binding.Stride);
-                return;
-            }
-        }
         case GL_IMAGE_BINDING_NAME:
         case GL_IMAGE_BINDING_LEVEL:
         case GL_IMAGE_BINDING_LAYERED:
@@ -1064,11 +1004,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             *params = obj ? static_cast<GLint>(obj->GetExternalIndex()) : 0;
             return;
         }
-        case GL_DRAW_INDIRECT_BUFFER_BINDING: {
-            auto& obj = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
-            *params = obj ? static_cast<GLint>(obj->GetExternalIndex()) : 0;
-            return;
-        }
         case GL_MAX_DEBUG_GROUP_STACK_DEPTH:
             *params = 0; // debug-group entrypoints are stubbed
             return;
@@ -1432,7 +1367,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             *params = 0; // program-binary entrypoints are stubbed
             return;
         case GL_PROGRAM_PIPELINE_BINDING:
-            *params = static_cast<GLint>(MG_State::pGLContext->GetBoundProgramPipelineName());
+            *params = 0; // program-pipeline entrypoints are stubbed
             return;
         case GL_PROGRAM_POINT_SIZE:
             *params = MG_State::pGLContext->IsCapabilityEnabled(CapabilityInput::ProgramPointSize) ? GL_TRUE : GL_FALSE;
@@ -1703,7 +1638,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             *params = static_cast<GLint>(MG_State::pGLContext->GetHint(pname));
             return;
         case GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
-            *params = MG_Backend::pActiveBackendObject->GetDynamicParameters().TextureBufferOffsetAlignment;
+            *params = 0; // texture-buffer range entrypoints are stubbed
             return;
         case GL_TIMESTAMP: {
             Int64 timestamp = 0;
@@ -1772,22 +1707,20 @@ namespace MobileGL::MG_Impl::GLImpl {
             *params = vao ? static_cast<GLint>(vao->GetExternalIndex()) : 0;
             return;
         }
-        // The vertex buffer binding points are per-binding-index state, so the non-indexed getter
-        // has nothing to answer with (GL 4.6 core table 23.4).
-        case GL_VERTEX_BINDING_BUFFER:
         case GL_VERTEX_BINDING_DIVISOR:
+            *params = 0; // vertex-binding entrypoints are stubbed
+            return;
         case GL_VERTEX_BINDING_OFFSET:
+            *params = 0; // vertex-binding entrypoints are stubbed
+            return;
         case GL_VERTEX_BINDING_STRIDE:
-            RecordIndexedOnlyGetterError(__func__, pname);
+            *params = 0; // vertex-binding entrypoints are stubbed
             return;
         case GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET:
-            *params = static_cast<GLint>(VertexArrayImpl::GetMaxVertexAttribRelativeOffset());
+            *params = 0; // vertex-binding entrypoints are stubbed
             return;
         case GL_MAX_VERTEX_ATTRIB_BINDINGS:
-            *params = static_cast<GLint>(VertexArrayImpl::GetMaxVertexAttribBindings());
-            return;
-        case GL_MAX_VERTEX_ATTRIB_STRIDE:
-            *params = static_cast<GLint>(VertexArrayImpl::GetMaxVertexAttribStride());
+            *params = 0; // vertex-binding entrypoints are stubbed
             return;
         case GL_VIEWPORT: {
             const auto& vp = MG_State::pGLContext->GetViewport();
@@ -1953,21 +1886,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_MAX_SAMPLE_MASK_WORDS:
             *params = dynamicParameters.MaxSampleMaskWords;
             break;
-        case GL_PATCH_VERTICES:
-            *params = static_cast<GLint>(MG_State::pGLContext->GetPatchVertices());
-            break;
-        case GL_MAX_PATCH_VERTICES:
-            *params = dynamicParameters.MaxPatchVertices;
-            break;
-        case GL_MAX_TESS_GEN_LEVEL:
-            *params = dynamicParameters.MaxTessGenLevel;
-            break;
-        case GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET:
-            *params = dynamicParameters.MinProgramTextureGatherOffset;
-            break;
-        case GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET:
-            *params = dynamicParameters.MaxProgramTextureGatherOffset;
-            break;
         case GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS:
             *params = static_cast<GLint>(GetIndexedBufferQueryPointCount(BufferTarget::ShaderStorage));
             break;
@@ -1983,25 +1901,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS:
             *params = kFrontendMaxTransformFeedbackSeparateComponents;
             break;
-        // ARB_transform_feedback3 limits. The GL CTS queries these before checking
-        // whether the extension is advertised and requires no GL error; desktop
-        // drivers all accept them, so answer with the separate-attrib capacity and
-        // the single vertex stream the backends provide.
-        case GL_MAX_TRANSFORM_FEEDBACK_BUFFERS:
-            *params = kFrontendMaxTransformFeedbackSeparateAttribs;
-            break;
-        case GL_MAX_VERTEX_STREAMS:
-            *params = 1;
-            break;
-        case GL_TRANSFORM_FEEDBACK_ACTIVE:
-            *params = MG_State::pGLContext->IsTransformFeedbackActive() ? 1 : 0;
-            break;
-        case GL_TRANSFORM_FEEDBACK_PAUSED:
-            *params = MG_State::pGLContext->IsTransformFeedbackPaused() ? 1 : 0;
-            break;
-        case GL_TRANSFORM_FEEDBACK_BINDING:
-            *params = static_cast<GLint>(MG_State::pGLContext->GetBoundTransformFeedbackName());
-            break;
         case GL_MAX_TEXTURE_IMAGE_UNITS:
             *params = dynamicParameters.MaxTextureImageUnits;
             break;
@@ -2058,15 +1957,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_SUBPIXEL_BITS:
             *params = std::max(dynamicParameters.ViewportSubpixelBits, kFrontendSubpixelBits);
             break;
-        case GL_MIN_FRAGMENT_INTERPOLATION_OFFSET:
-            *params = static_cast<GLint>(std::lround(dynamicParameters.MinFragmentInterpolationOffset));
-            break;
-        case GL_MAX_FRAGMENT_INTERPOLATION_OFFSET:
-            *params = static_cast<GLint>(std::lround(dynamicParameters.MaxFragmentInterpolationOffset));
-            break;
-        case GL_FRAGMENT_INTERPOLATION_OFFSET_BITS:
-            *params = dynamicParameters.FragmentInterpolationOffsetBits;
-            break;
         case GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT:
             *params = static_cast<Int>(dynamicParameters.UniformBufferOffsetAlignment);
             break;

MobileGL/MG_Impl/GLImpl/Program/GL_Program.cpp

@@ -8,8 +8,6 @@
 
 #include "GL_Program.h"
 #include "Config.h"
-#include <cmath>
-#include <limits>
 #include <MG_Impl/GLImpl/VertexArray/Validators.h>
 #include <MG_State/GLState/Core.h>
 #include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
@@ -51,18 +49,10 @@ namespace MobileGL::MG_Impl::GLImpl {
 
     static bool CheckProgramNameValidity(GLuint program) {
         if (!MG_State::pGLContext->ValidateProgramName(program)) {
-            // Programs and shaders share one name space: a name that exists but
-            // belongs to a shader is INVALID_OPERATION, a name GL never handed
-            // out is INVALID_VALUE (GL 3.3 core 2.11.x).
-            const ErrorCode error = MG_State::pGLContext->ValidateShaderName(program)
-                ? ErrorCode::InvalidOperation
-                : ErrorCode::InvalidValue;
             MG_State::pGLContext->RecordError(
-                error,
+                ErrorCode::InvalidValue,
                 MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             std::to_string(program) +
-                                                 (error == ErrorCode::InvalidOperation ? " is not a program object."
-                                                                                       : " is not a valid name.")));
+                                             std::to_string(program) + " is not a valid name."));
             return false;
         }
         return true;
@@ -205,50 +195,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
     }
 
-    // The GL_UNIFORM interface and glGetActiveUniform(s)iv are the same query in two
-    // spellings, so they answer from the same place - the frontend reflection. The backend
-    // program is not that place: it does not exist at all for a program whose types its
-    // shading language cannot express (a double-precision uniform has no ESSL form), and
-    // the interface queries would then describe a program with no uniforms.
-    //
-    // Writes the GL_UNIFORM value of `prop` for active uniform `index`; false for a prop
-    // the reflection does not model, which the caller forwards to the backend instead.
-    Bool GetUniformResourceProp(const SharedPtr<MG_State::GLState::ProgramObject>& programObject, Uint index,
-                                GLenum prop, GLint* out) {
-        switch (prop) {
-        case GL_TYPE:
-            *out = static_cast<GLint>(programObject->GetActiveUniformType(index));
-            return true;
-        case GL_ARRAY_SIZE:
-            *out = programObject->GetActiveUniformArraySize(index);
-            return true;
-        case GL_NAME_LENGTH:
-            *out = static_cast<GLint>(programObject->GetActiveUniformName(index).length() + 1);
-            return true;
-        case GL_BLOCK_INDEX:
-            *out = programObject->GetActiveUniformBlockIndex(index);
-            return true;
-        case GL_OFFSET:
-            *out = programObject->GetActiveUniformOffset(index);
-            return true;
-        case GL_ARRAY_STRIDE:
-            *out = programObject->GetActiveUniformArrayStride(index);
-            return true;
-        case GL_MATRIX_STRIDE:
-            *out = programObject->GetActiveUniformMatrixStride(index);
-            return true;
-        case GL_IS_ROW_MAJOR:
-            *out = programObject->GetActiveUniformIsRowMajor(index);
-            return true;
-        case GL_LOCATION:
-            // A block member has no location; GetUniformLocation already reports -1 for one.
-            *out = programObject->GetUniformLocation(programObject->GetActiveUniformName(index));
-            return true;
-        default:
-            return false;
-        }
-    }
-
     void CopyStr(GLsizei bufSize, GLsizei* length, GLchar* dst, const char* src, GLsizei srcLength) {
         if (bufSize <= 0) {
             if (length) *length = 0;
@@ -371,16 +317,11 @@ namespace MobileGL::MG_Impl::GLImpl {
     }
 
     void DeleteProgram_State(GLuint program) {
-        // "If program is zero, it is silently ignored" (GL 4.6 core 7.3) - unlike every
-        // other program entry point, where 0 is a name GL never handed out.
-        if (program == 0) return;
         if (!CheckProgramNameValidity(program)) return;
         MG_State::pGLContext->MarkProgramForDeletion(program);
     }
 
     void DeleteShader_State(GLuint shader) {
-        // Same silent-zero rule as glDeleteProgram (GL 4.6 core 7.1).
-        if (shader == 0) return;
         if (!CheckShaderNameValidity(shader)) return;
         MG_State::pGLContext->MarkShaderForDeletion(shader);
     }
@@ -664,18 +605,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             *params = programObject->GetActiveUniformBlocksMaxNameLength() + 1;
             MGLOG_D("%s: %s = %d", __func__, MG_Util::ConvertGLEnumToString(pname).c_str(), *params);
             break;
-        case GL_TRANSFORM_FEEDBACK_VARYINGS:
-            *params = static_cast<GLint>(programObject->GetTransformFeedbackVaryingCount());
-            MGLOG_D("%s: %s = %d", __func__, MG_Util::ConvertGLEnumToString(pname).c_str(), *params);
-            break;
-        case GL_TRANSFORM_FEEDBACK_BUFFER_MODE:
-            *params = static_cast<GLint>(programObject->GetTransformFeedbackBufferMode());
-            MGLOG_D("%s: %s = %d", __func__, MG_Util::ConvertGLEnumToString(pname).c_str(), *params);
-            break;
-        case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH:
-            *params = programObject->GetTransformFeedbackVaryingMaxLength();
-            MGLOG_D("%s: %s = %d", __func__, MG_Util::ConvertGLEnumToString(pname).c_str(), *params);
-            break;
         case GL_COMPUTE_WORK_GROUP_SIZE: { // GL >= 4.3
             if (!programObject->GetLinkStatus() || programObject->GetShaderIndexByStage(ShaderStage::Compute) < 0) {
                 MG_State::pGLContext->RecordError(
@@ -694,17 +623,10 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
 
         case GL_PROGRAM_BINARY_LENGTH:
-            // No program binary format is exposed, so a program never has a retrievable
-            // binary and its length is zero (ARB_get_program_binary).
-            *params = 0;
-            break;
-        case GL_PROGRAM_BINARY_RETRIEVABLE_HINT:
-            *params = programObject->GetBinaryRetrievableHint() ? GL_TRUE : GL_FALSE;
-            break;
-        case GL_PROGRAM_SEPARABLE:
-            *params = programObject->GetSeparable() ? GL_TRUE : GL_FALSE;
-            break;
 
+        case GL_TRANSFORM_FEEDBACK_BUFFER_MODE:
+        case GL_TRANSFORM_FEEDBACK_VARYINGS:
+        case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH:
         case GL_GEOMETRY_VERTICES_OUT:
         case GL_GEOMETRY_INPUT_TYPE:
         case GL_GEOMETRY_OUTPUT_TYPE:
@@ -879,8 +801,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
 
         if constexpr (std::is_same_v<T, GLfloat>) {
-            if (ttype->getBasicType() != glslang::EbtDouble && ttype->isMatrix() &&
-                ttype->getMatrixCols() == 3) {
+            if (ttype->isMatrix() && ttype->getMatrixCols() == 3) {
                 auto* pBase = pUBO + offset;
                 for (int i = 0; i < ttype->getMatrixRows(); i++) {
                     Memcpy(reinterpret_cast<char*>(params) + ttype->getMatrixCols() * sizeof(GLfloat) * i,
@@ -890,46 +811,9 @@ namespace MobileGL::MG_Impl::GLImpl {
             }
         }
 
-        // A double-precision uniform is the one case where the stored component type can
-        // differ from the queried one for a non-opaque uniform, and the difference is not
-        // just a reinterpretation: it is twice as wide, so a raw copy would overrun the
-        // caller's buffer as well as return nonsense. Read component by component and let
-        // GL's conversion rules (7.6: round to nearest for the integer queries) apply.
-        if (ttype->getBasicType() == glslang::EbtDouble) {
-            const Int columns = ttype->isMatrix() ? ttype->getMatrixCols() : 1;
-            const Int rows = ttype->isMatrix() ? ttype->getMatrixRows()
-                                               : (ttype->isVector() ? ttype->getVectorSize() : 1);
-            // The slot the linker handed out is exactly `columns` columns wide, so it also
-            // states the column stride - which for a double matrix is not a float's 16 bytes.
-            const SizeT columnStride = columns > 0 ? size / static_cast<SizeT>(columns) : size;
-            for (Int column = 0; column < columns; ++column) {
-                for (Int row = 0; row < rows; ++row) {
-                    GLdouble component = 0.0;
-                    Memcpy(&component, pUBO + offset + column * columnStride + row * sizeof(GLdouble),
-                           sizeof(component));
-                    if constexpr (std::is_integral_v<T>) {
-                        // Rounded to the nearest integer and clamped into the queried type's
-                        // range, so a negative double read through glGetUniformuiv is 0
-                        // rather than its two's complement.
-                        const GLdouble rounded = std::nearbyint(component);
-                        const GLdouble lowest = static_cast<GLdouble>(std::numeric_limits<T>::lowest());
-                        const GLdouble highest = static_cast<GLdouble>(std::numeric_limits<T>::max());
-                        params[column * rows + row] = static_cast<T>(std::clamp(rounded, lowest, highest));
-                    } else {
-                        params[column * rows + row] = static_cast<T>(component);
-                    }
-                }
-            }
-            return;
-        }
-
         Memcpy(params, pUBO + offset, size);
     }
 
-    void GetUniformdv_State(GLuint program, GLint location, GLdouble* params) {
-        GetUniformScalar_State(program, location, params);
-    }
-
     void GetUniformfv_State(GLuint program, GLint location, GLfloat* params) {
         GetUniformScalar_State(program, location, params);
     }
@@ -943,13 +827,19 @@ namespace MobileGL::MG_Impl::GLImpl {
     }
 
     GLboolean IsProgram_State(GLuint program) {
-        // Deletion-flagged names stay valid while the object is still GL-visible (program in
-        // use, shader attached), so name validity is exactly the Is* answer.
+        /* FIXME: Handle situations that:
+         * A program object marked for deletion with glDeleteProgram but still in use as part of current
+         * rendering state is still considered a program object and glIsProgram will return GL_TRUE.
+         */
         if (program == 0) return GL_FALSE;
         return MG_State::pGLContext->ValidateProgramName(program) ? GL_TRUE : GL_FALSE;
     }
 
     GLboolean IsShader_State(GLuint shader) {
+        /* FIXME: Handle situations that:
+         * A shader object marked for deletion with glDeleteShader but still attached to a program object is still
+         * considered a shader object and glIsShader will return GL_TRUE.
+         */
         if (shader == 0) return GL_FALSE;
         return MG_State::pGLContext->ValidateShaderName(shader) ? GL_TRUE : GL_FALSE;
     }
@@ -959,18 +849,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!programObject) return;
         MGLOG_D("%s: linking program %d", __func__, program);
 
-        // Relinking the program an active transform feedback captures from would
-        // invalidate its varyings mid-capture (GL 3.3 core 2.11.3).
-        if (MG_State::pGLContext->IsTransformFeedbackActive() &&
-            MG_State::pGLContext->GetTransformFeedbackProgram().get() == programObject.get()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl", __func__,
-                    "The program used by active transform feedback cannot be relinked."));
-            return;
-        }
-
         static Bool allowVSOnlyPrograms;
         static Bool initialized = false;
         if (!initialized) {
@@ -1014,18 +892,6 @@ namespace MobileGL::MG_Impl::GLImpl {
     void UseProgram_State(GLuint program) {
         MGLOG_D("UseProgram_State: program=%u", program);
 
-        // The program in use may not change while transform feedback is active - unless
-        // the capture is paused, which is exactly what ARB_transform_feedback2 added the
-        // pause for (GL 4.6 core 7.3).
-        if (MG_State::pGLContext->IsTransformFeedbackActive() &&
-            !MG_State::pGLContext->IsTransformFeedbackPaused()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "The current program cannot change while transform feedback is active."));
-            return;
-        }
-
         if (program == 0) {
             MG_State::pGLContext->UseProgram(0);
             return;
@@ -1097,7 +963,7 @@ namespace MobileGL::MG_Impl::GLImpl {
     void Uniformv_State(GLint location, GLsizei count, T* value) {
         if (location == -1) return;
 
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
+        auto& programObject = MG_State::pGLContext->GetCurrentProgram();
         if (programObject == nullptr) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -1148,38 +1014,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
     }
 
-    // glUniform*d / glUniformMatrix*dv. The vector forms need nothing beyond the shared
-    // upload template - it is already typed on the component - but a matrix does: the
-    // column stride the linker used for a double matrix is not the 16 bytes a float one
-    // gets. It is not guessed here; the slot the uniform was given is exactly `columns`
-    // columns wide, so dividing states the stride the rest of the pipeline agreed on.
-    template <typename Program>
-    void UniformMatrixdv_Object(Program& programObject, GLint location, GLsizei count, GLboolean transpose,
-                                const GLdouble* value, Int columns, Int rows) {
-        const SizeT slotSize = programObject.GetUniformSizesInBytes(location);
-        const SizeT columnStride = columns > 0 ? slotSize / static_cast<SizeT>(columns) : slotSize;
-        const SizeT componentCount = static_cast<SizeT>(columns) * static_cast<SizeT>(rows);
-        Vector<GLdouble> column(static_cast<SizeT>(rows));
-        for (GLint matrix = 0; matrix < count; ++matrix) {
-            if (matrix > 0 && !programObject.UniformLocationsAliasSameUniform(location, location + matrix)) break;
-            if (!programObject.IsValidUniformLocation(location + matrix)) {
-                RecordInvalidUniformLocationError(__func__, location + matrix, "the current program object");
-                return;
-            }
-            const GLdouble* source = value + matrix * componentCount;
-            for (Int c = 0; c < columns; ++c) {
-                for (Int r = 0; r < rows; ++r) {
-                    column[r] = transpose == GL_TRUE ? source[r * columns + c] : source[c * rows + r];
-                }
-                Uniform_State<1>(programObject, location + matrix, column.data(), c * columnStride);
-                for (Int r = 1; r < rows; ++r) {
-                    Uniform_State<1>(programObject, location + matrix, column.data() + r,
-                                     c * columnStride + r * sizeof(GLdouble));
-                }
-            }
-        }
-    }
-
     // Helper function to transpose a 2x2 matrix
     void TransposeMatrix2x2(const GLfloat* input, GLfloat* output) {
         // Input matrix is in column-major order (OpenGL default)
@@ -1289,7 +1123,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         // If transpose is GL_TRUE, we need to transpose the matrix data
         if (location == -1) return;
 
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
+        auto& programObject = MG_State::pGLContext->GetCurrentProgram();
         if (programObject == nullptr) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -1324,7 +1158,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         // If transpose is GL_TRUE, we need to transpose the matrix data
         if (location == -1) return;
 
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
+        auto& programObject = MG_State::pGLContext->GetCurrentProgram();
         if (programObject == nullptr) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -1364,7 +1198,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         // If transpose is GL_TRUE, we need to transpose the matrix data
         if (location == -1) return;
 
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
+        auto& programObject = MG_State::pGLContext->GetCurrentProgram();
         if (programObject == nullptr) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -1397,7 +1231,7 @@ namespace MobileGL::MG_Impl::GLImpl {
     void UniformMatrixNonSquarefv_State(const char* caller, GLint location, GLsizei count) {
         if (location == -1) return;
 
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
+        auto& programObject = MG_State::pGLContext->GetCurrentProgram();
         if (programObject == nullptr) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
@@ -1988,312 +1822,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         GLuint v[] = {v0, v1, v2, v3};
         Uniform4uiv(location, 1, v);
     }
-    void Uniform1d(GLint location, GLdouble v0) {
-        const GLdouble v[] = {v0};
-        Uniformv_State<1>(location, 1, v);
-    }
-
-    void Uniform1dv(GLint location, GLsizei count, const GLdouble* value) {
-        Uniformv_State<1>(location, count, value);
-    }
-
-    void ProgramUniform1d(GLuint program, GLint location, GLdouble v0) {
-        const GLdouble v[] = {v0};
-        ProgramUniformv_State<1>(program, location, 1, v);
-    }
-
-    void ProgramUniform1dv(GLuint program, GLint location, GLsizei count, const GLdouble* value) {
-        ProgramUniformv_State<1>(program, location, count, value);
-    }
-    void Uniform2d(GLint location, GLdouble v0, GLdouble v1) {
-        const GLdouble v[] = {v0, v1};
-        Uniformv_State<2>(location, 1, v);
-    }
-
-    void Uniform2dv(GLint location, GLsizei count, const GLdouble* value) {
-        Uniformv_State<2>(location, count, value);
-    }
-
-    void ProgramUniform2d(GLuint program, GLint location, GLdouble v0, GLdouble v1) {
-        const GLdouble v[] = {v0, v1};
-        ProgramUniformv_State<2>(program, location, 1, v);
-    }
-
-    void ProgramUniform2dv(GLuint program, GLint location, GLsizei count, const GLdouble* value) {
-        ProgramUniformv_State<2>(program, location, count, value);
-    }
-    void Uniform3d(GLint location, GLdouble v0, GLdouble v1, GLdouble v2) {
-        const GLdouble v[] = {v0, v1, v2};
-        Uniformv_State<3>(location, 1, v);
-    }
-
-    void Uniform3dv(GLint location, GLsizei count, const GLdouble* value) {
-        Uniformv_State<3>(location, count, value);
-    }
-
-    void ProgramUniform3d(GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2) {
-        const GLdouble v[] = {v0, v1, v2};
-        ProgramUniformv_State<3>(program, location, 1, v);
-    }
-
-    void ProgramUniform3dv(GLuint program, GLint location, GLsizei count, const GLdouble* value) {
-        ProgramUniformv_State<3>(program, location, count, value);
-    }
-    void Uniform4d(GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3) {
-        const GLdouble v[] = {v0, v1, v2, v3};
-        Uniformv_State<4>(location, 1, v);
-    }
-
-    void Uniform4dv(GLint location, GLsizei count, const GLdouble* value) {
-        Uniformv_State<4>(location, count, value);
-    }
-
-    void ProgramUniform4d(GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3) {
-        const GLdouble v[] = {v0, v1, v2, v3};
-        ProgramUniformv_State<4>(program, location, 1, v);
-    }
-
-    void ProgramUniform4dv(GLuint program, GLint location, GLsizei count, const GLdouble* value) {
-        ProgramUniformv_State<4>(program, location, count, value);
-    }
-    void UniformMatrix2dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 2, 2);
-    }
-
-    void ProgramUniformMatrix2dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 2, 2);
-    }
-    void UniformMatrix3dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 3, 3);
-    }
-
-    void ProgramUniformMatrix3dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 3, 3);
-    }
-    void UniformMatrix4dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 4, 4);
-    }
-
-    void ProgramUniformMatrix4dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 4, 4);
-    }
-    void UniformMatrix2x3dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 2, 3);
-    }
-
-    void ProgramUniformMatrix2x3dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 2, 3);
-    }
-    void UniformMatrix2x4dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 2, 4);
-    }
-
-    void ProgramUniformMatrix2x4dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 2, 4);
-    }
-    void UniformMatrix3x2dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 3, 2);
-    }
-
-    void ProgramUniformMatrix3x2dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 3, 2);
-    }
-    void UniformMatrix3x4dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 3, 4);
-    }
-
-    void ProgramUniformMatrix3x4dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 3, 4);
-    }
-    void UniformMatrix4x2dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 4, 2);
-    }
-
-    void ProgramUniformMatrix4x2dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 4, 2);
-    }
-    void UniformMatrix4x3dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = MG_State::pGLContext->GetProgramForUniform();
-        if (programObject == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "There is no current program object."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 4, 3);
-    }
-
-    void ProgramUniformMatrix4x3dv(GLuint program, GLint location, GLsizei count, GLboolean transpose,
-                                      const GLdouble* value) {
-        if (location == -1) return;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "program " + std::to_string(program) + " is not linked."));
-            return;
-        }
-        UniformMatrixdv_Object(*programObject, location, count, transpose, value, 4, 3);
-    }
-    void GetUniformdv(GLuint program, GLint location, GLdouble* params) {
-        GetUniformdv_State(program, location, params);
-    }
-
     void Uniform1fv(GLint location, GLsizei count, const GLfloat* value) {
         Uniform1fv_State(location, count, value);
     }
@@ -2573,17 +2101,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                                              "Backend does not support program interface queries."));
             return;
         }
-        if (programInterface == GL_UNIFORM) {
-            if (pname == GL_ACTIVE_RESOURCES) {
-                *params = static_cast<GLint>(programObject->GetUniformCount());
-                return;
-            }
-            if (pname == GL_MAX_NAME_LENGTH) {
-                // Stored as the bare length; GL_MAX_NAME_LENGTH counts the terminator.
-                *params = programObject->GetUniformMaxLength() + 1;
-                return;
-            }
-        }
         getProgramInterfaceiv(program, programInterface, pname, params);
     }
 
@@ -2592,10 +2109,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!programObject) return GL_INVALID_INDEX;
         if (!ValidateNamedProgramResourceInterface(programInterface, __func__)) return GL_INVALID_INDEX;
         if (!name) return GL_INVALID_INDEX;
-        if (programInterface == GL_UNIFORM) {
-            const Int uniformIndex = programObject->GetActiveUniformIndex(name);
-            return uniformIndex < 0 ? GL_INVALID_INDEX : static_cast<GLuint>(uniformIndex);
-        }
         auto getProgramResourceIndex = MG_Backend::gBackendFunctionsTable.GL.GetProgramResourceIndex;
         if (!getProgramResourceIndex) {
             MG_State::pGLContext->RecordError(
@@ -2632,13 +2145,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                 MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "bufSize must be non-negative."));
             return;
         }
-        if (programInterface == GL_UNIFORM) {
-            // Same index space GetProgramResourceIndex answers in, and the range check above
-            // already used it.
-            const String& uniformName = programObject->GetActiveUniformName(index);
-            CopyStr(bufSize, length, name, uniformName.c_str(), static_cast<GLsizei>(uniformName.length()));
-            return;
-        }
         auto getProgramResourceName = MG_Backend::gBackendFunctionsTable.GL.GetProgramResourceName;
         if (!getProgramResourceName) {
             MG_State::pGLContext->RecordError(
@@ -2660,36 +2166,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                                                                       "propCount and bufSize must be non-negative."));
             return;
         }
-        if (programInterface == GL_UNIFORM) {
-            if (index >= programObject->GetUniformCount()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "index is out of range."));
-                return;
-            }
-            if (props == nullptr || params == nullptr) return;
-            GLsizei written = 0;
-            for (GLsizei i = 0; i < propCount && written < bufSize; ++i) {
-                GLint value = 0;
-                if (!GetUniformResourceProp(programObject, index, props[i], &value)) {
-                    // GL_ATOMIC_COUNTER_BUFFER_INDEX and the GL_REFERENCED_BY_* stage props are
-                    // not modelled here; ask the backend, which indexes resources by name.
-                    auto backendGetIndex = MG_Backend::gBackendFunctionsTable.GL.GetProgramResourceIndex;
-                    auto backendGetiv = MG_Backend::gBackendFunctionsTable.GL.GetProgramResourceiv;
-                    if (backendGetIndex && backendGetiv) {
-                        const GLuint backendIndex = backendGetIndex(program, GL_UNIFORM,
-                                                                   programObject->GetActiveUniformName(index).c_str());
-                        if (backendIndex != GL_INVALID_INDEX) {
-                            GLsizei one = 0;
-                            backendGetiv(program, GL_UNIFORM, backendIndex, 1, &props[i], 1, &one, &value);
-                        }
-                    }
-                }
-                params[written++] = value;
-            }
-            if (length) *length = written;
-            return;
-        }
         auto getProgramResourceiv = MG_Backend::gBackendFunctionsTable.GL.GetProgramResourceiv;
         if (!getProgramResourceiv) {
             MG_State::pGLContext->RecordError(
@@ -2741,189 +2217,4 @@ namespace MobileGL::MG_Impl::GLImpl {
     void ValidateProgram(GLuint program) {
         ValidateProgram_State(program);
     }
-
-    // ARB_get_program_binary with no supported binary format (GL_NUM_PROGRAM_BINARY_FORMATS
-    // is 0, which the extension explicitly allows). The three entry points below are what an
-    // application - and dEQP's function loader - reach through the extension; without it
-    // glProgramParameteri is not exposed in a 4.0 context at all.
-    void ProgramParameteri(GLuint program, GLenum pname, GLint value) {
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (pname != GL_PROGRAM_BINARY_RETRIEVABLE_HINT && pname != GL_PROGRAM_SEPARABLE) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "pname is not an accepted value."));
-            return;
-        }
-        if (value != GL_TRUE && value != GL_FALSE) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "value must be GL_TRUE or GL_FALSE."));
-            return;
-        }
-        if (pname == GL_PROGRAM_SEPARABLE) {
-            programObject->SetSeparable(value == GL_TRUE);
-            return;
-        }
-        programObject->SetBinaryRetrievableHint(value == GL_TRUE);
-    }
-
-    // GL 4.6 core 7.3: glCreateShaderProgramv is defined as the exact sequence below, so it
-    // is written as that sequence rather than as a private shortcut - every error it can
-    // raise is one of theirs, raised at the point they would raise it.
-    GLuint CreateShaderProgramv(GLenum type, GLsizei count, const GLchar* const* strings) {
-        const GLuint shader = CreateShader_State(type);
-        if (shader == 0) return 0;
-
-        ShaderSource_State(shader, count, strings, nullptr);
-        CompileShader_State(shader);
-
-        const GLuint program = CreateProgram_State();
-        if (program != 0) {
-            const auto& shaderObject = MG_State::pGLContext->GetShaderObject(shader);
-            const auto& programObject = MG_State::pGLContext->GetProgramObject(program);
-            // The program is separable whether or not the shader compiled: a failed
-            // compile leaves an unlinked but otherwise well-formed separable program.
-            if (programObject) programObject->SetSeparable(true);
-            if (shaderObject && programObject && shaderObject->GetCompileStatus()) {
-                AttachShader_State(program, shader);
-                // Not LinkProgram_State: that injects a default fragment shader into a
-                // program that has none, which is exactly wrong for a separable
-                // vertex-stage program - the pipeline supplies the real one.
-                programObject->Link(false);
-                // glDetachShader defers the removal to the next link, so the program keeps
-                // the shader object it was built from while no longer reporting it attached.
-                DetachShader_State(program, shader);
-            }
-            if (shaderObject && programObject && !shaderObject->GetInfoLog().empty()) {
-                programObject->AppendInfoLog(shaderObject->GetInfoLog());
-            }
-        }
-        DeleteShader_State(shader);
-        return program;
-    }
-
-    void GetProgramBinary(GLuint program, GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, void* binary) {
-        (void)binaryFormat;
-        (void)binary;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (bufSize < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "bufSize must be non-negative."));
-            return;
-        }
-        if (length) *length = 0;
-        // GL_PROGRAM_BINARY_LENGTH is always zero here, which the spec makes an error to ask for.
-        MG_State::pGLContext->RecordError(
-            ErrorCode::InvalidOperation,
-            MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "The program has no retrievable binary."));
-    }
-
-    void ProgramBinary(GLuint program, GLenum binaryFormat, const void* binary, GLsizei length) {
-        (void)binaryFormat;
-        (void)binary;
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (length < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "length must be non-negative."));
-            return;
-        }
-        // No format is supported, so every binary is rejected - and the program's link status
-        // has to read FALSE afterwards.
-        programObject->MarkLinkFailedByProgramBinary();
-        MG_State::pGLContext->RecordError(
-            ErrorCode::InvalidEnum,
-            MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "binaryFormat is not a supported format."));
-    }
-
-    void TransformFeedbackVaryings(GLuint program, GLsizei count, const GLchar* const* varyings, GLenum bufferMode) {
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (bufferMode != GL_INTERLEAVED_ATTRIBS && bufferMode != GL_SEPARATE_ATTRIBS) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "bufferMode is not a valid capture mode."));
-            return;
-        }
-        if (count < 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "count must be non-negative."));
-            return;
-        }
-        // GL 3.3 core: SEPARATE_ATTRIBS count may not exceed the separate-attrib limit.
-        if (bufferMode == GL_SEPARATE_ATTRIBS && count > 4) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "count exceeds GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS."));
-            return;
-        }
-        Vector<String> names;
-        names.reserve(static_cast<SizeT>(count));
-        for (GLsizei i = 0; i < count; ++i) {
-            names.emplace_back(varyings != nullptr && varyings[i] != nullptr ? varyings[i] : "");
-        }
-        // ARB_transform_feedback3's special names only mean anything in an interleaved
-        // capture, and gl_NextBuffer cannot advance past the last capture buffer.
-        constexpr Uint maxTransformFeedbackBuffers = 4;
-        Uint nextBufferCount = 0;
-        for (const String& name : names) {
-            const Bool isNextBuffer = name == "gl_NextBuffer";
-            const Bool isSkipComponents = name.size() == 18 && name.compare(0, 17, "gl_SkipComponents") == 0 &&
-                                          name[17] >= '1' && name[17] <= '4';
-            if (!isNextBuffer && !isSkipComponents) continue;
-            if (bufferMode != GL_INTERLEAVED_ATTRIBS) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                                 "'" + name + "' requires GL_INTERLEAVED_ATTRIBS."));
-                return;
-            }
-            if (isNextBuffer && ++nextBufferCount >= maxTransformFeedbackBuffers) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                                 "More gl_NextBuffer entries than "
-                                                 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS allows."));
-                return;
-            }
-        }
-        programObject->SetTransformFeedbackVaryings(Move(names), bufferMode);
-    }
-
-    void GetTransformFeedbackVarying(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLsizei* size,
-                                     GLenum* type, GLchar* name) {
-        auto& programObject = TryToGetProgramObject(program);
-        if (!programObject) return;
-        if (!programObject->GetLinkStatus()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             std::to_string(program) + " has not been successfully linked."));
-            return;
-        }
-        const auto* varying = programObject->GetTransformFeedbackVarying(index);
-        if (varying == nullptr) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl", __func__,
-                    "index is not an active transform feedback varying of the program."));
-            return;
-        }
-        if (size != nullptr) *size = varying->size;
-        if (type != nullptr) *type = varying->type;
-        GLsizei written = 0;
-        if (name != nullptr && bufSize > 0) {
-            written = std::min<GLsizei>(bufSize - 1, static_cast<GLsizei>(varying->name.size()));
-            Memcpy(name, varying->name.data(), static_cast<SizeT>(written));
-            name[written] = '\0';
-        }
-        if (length != nullptr) *length = written;
-    }
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Program/GL_Program.h

@@ -137,47 +137,5 @@ namespace MobileGL::MG_Impl::GLImpl {
     GLint GetProgramResourceLocation(GLuint program, GLenum programInterface, const GLchar* name);
     GLint GetProgramResourceLocationIndex(GLuint program, GLenum programInterface, const GLchar* name);
     void ShaderStorageBlockBinding(GLuint program, GLuint storageBlockIndex, GLuint storageBlockBinding);
-    void Uniform1d(GLint location, GLdouble v0);
-    void Uniform1dv(GLint location, GLsizei count, const GLdouble* value);
-    void ProgramUniform1d(GLuint program, GLint location, GLdouble v0);
-    void ProgramUniform1dv(GLuint program, GLint location, GLsizei count, const GLdouble* value);
-    void Uniform2d(GLint location, GLdouble v0, GLdouble v1);
-    void Uniform2dv(GLint location, GLsizei count, const GLdouble* value);
-    void ProgramUniform2d(GLuint program, GLint location, GLdouble v0, GLdouble v1);
-    void ProgramUniform2dv(GLuint program, GLint location, GLsizei count, const GLdouble* value);
-    void Uniform3d(GLint location, GLdouble v0, GLdouble v1, GLdouble v2);
-    void Uniform3dv(GLint location, GLsizei count, const GLdouble* value);
-    void ProgramUniform3d(GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2);
-    void ProgramUniform3dv(GLuint program, GLint location, GLsizei count, const GLdouble* value);
-    void Uniform4d(GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3);
-    void Uniform4dv(GLint location, GLsizei count, const GLdouble* value);
-    void ProgramUniform4d(GLuint program, GLint location, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3);
-    void ProgramUniform4dv(GLuint program, GLint location, GLsizei count, const GLdouble* value);
-    void UniformMatrix2dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix2dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix3dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix3dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix4dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix4dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix2x3dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix2x3dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix2x4dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix2x4dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix3x2dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix3x2dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix3x4dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix3x4dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix4x2dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix4x2dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void UniformMatrix4x3dv(GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void ProgramUniformMatrix4x3dv(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLdouble* value);
-    void GetUniformdv(GLuint program, GLint location, GLdouble* params);
     void ValidateProgram(GLuint program);
-    void ProgramParameteri(GLuint program, GLenum pname, GLint value);
-    GLuint CreateShaderProgramv(GLenum type, GLsizei count, const GLchar* const* strings);
-    void GetProgramBinary(GLuint program, GLsizei bufSize, GLsizei* length, GLenum* binaryFormat, void* binary);
-    void ProgramBinary(GLuint program, GLenum binaryFormat, const void* binary, GLsizei length);
-    void TransformFeedbackVaryings(GLuint program, GLsizei count, const GLchar* const* varyings, GLenum bufferMode);
-    void GetTransformFeedbackVarying(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLsizei* size,
-                                     GLenum* type, GLchar* name);
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Program/GL_ProgramPipeline.cpp

@@ -1,231 +0,0 @@
-// MobileGL - MobileGL/MG_Impl/GLImpl/Program/GL_ProgramPipeline.cpp
-// Copyright (c) 2025-2026 MobileGL-Dev
-// Licensed under the GNU Lesser General Public License v3.0:
-//   https://www.gnu.org/licenses/gpl-3.0.txt
-//   https://www.gnu.org/licenses/lgpl-3.0.txt
-// SPDX-License-Identifier: LGPL-3.0-only
-// End of Source File Header
-
-#include "GL_ProgramPipeline.h"
-
-#include <MG_State/GLState/Core.h>
-#include <MG_State/GLState/ErrorState/ErrorInfo.h>
-#include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
-
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace {
-        void RecordPipelineError(ErrorCode code, const char* function, String message) {
-            MG_State::pGLContext->RecordError(
-                code, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", function, Move(message)));
-        }
-
-        // A pipeline name only names an object once it has been bound or created; querying a
-        // reserved-but-unmaterialised name is INVALID_OPERATION (GL 4.6 core 7.4).
-        const SharedPtr<MG_State::GLState::ProgramPipelineObject>* TryGetPipeline(GLuint pipeline,
-                                                                                 const char* function) {
-            if (!MG_State::pGLContext->IsProgramPipelineObject(pipeline)) {
-                RecordPipelineError(ErrorCode::InvalidOperation, function,
-                                    std::format("Program pipeline {} does not exist.", pipeline));
-                return nullptr;
-            }
-            return &MG_State::pGLContext->GetProgramPipelineObject(pipeline);
-        }
-
-        Bool ValidatePipelineCount(GLsizei n, const char* function) {
-            if (n < 0) {
-                RecordPipelineError(ErrorCode::InvalidValue, function, "n must be non-negative.");
-                return false;
-            }
-            return true;
-        }
-
-        // GL 4.6 core table 7.1 maps each stage bit onto a shader stage.
-        Bool TryResolveStageBit(GLbitfield bit, ShaderStage& outStage) {
-            switch (bit) {
-            case GL_VERTEX_SHADER_BIT: outStage = ShaderStage::Vertex; return true;
-            case GL_TESS_CONTROL_SHADER_BIT: outStage = ShaderStage::TessControl; return true;
-            case GL_TESS_EVALUATION_SHADER_BIT: outStage = ShaderStage::TessEval; return true;
-            case GL_GEOMETRY_SHADER_BIT: outStage = ShaderStage::Geometry; return true;
-            case GL_FRAGMENT_SHADER_BIT: outStage = ShaderStage::Fragment; return true;
-            case GL_COMPUTE_SHADER_BIT: outStage = ShaderStage::Compute; return true;
-            default: return false;
-            }
-        }
-
-        constexpr GLbitfield kAllStageBits = GL_VERTEX_SHADER_BIT | GL_TESS_CONTROL_SHADER_BIT |
-                                            GL_TESS_EVALUATION_SHADER_BIT | GL_GEOMETRY_SHADER_BIT |
-                                            GL_FRAGMENT_SHADER_BIT | GL_COMPUTE_SHADER_BIT;
-    } // namespace
-
-    void GenProgramPipelines(GLsizei n, GLuint* pipelines) {
-        if (!ValidatePipelineCount(n, __func__)) return;
-        if (n == 0 || !pipelines) return;
-
-        static thread_local Vector<GLuint> names;
-        MG_State::pGLContext->GenProgramPipelineNames(static_cast<Uint>(n), names);
-        Memcpy(pipelines, names.data(), static_cast<SizeT>(n) * sizeof(GLuint));
-    }
-
-    void CreateProgramPipelines(GLsizei n, GLuint* pipelines) {
-        if (!ValidatePipelineCount(n, __func__)) return;
-        if (n == 0 || !pipelines) return;
-
-        static thread_local Vector<GLuint> names;
-        MG_State::pGLContext->GenProgramPipelineNames(static_cast<Uint>(n), names);
-        for (GLsizei i = 0; i < n; ++i) {
-            pipelines[i] = names[static_cast<SizeT>(i)];
-            MG_State::pGLContext->CreateProgramPipelineObject(names[static_cast<SizeT>(i)]);
-        }
-    }
-
-    void DeleteProgramPipelines(GLsizei n, const GLuint* pipelines) {
-        if (!ValidatePipelineCount(n, __func__)) return;
-        if (!pipelines) return;
-
-        for (GLsizei i = 0; i < n; ++i) {
-            // Deleting zero, an unknown name, or a name that was only reserved is silently ignored.
-            MG_State::pGLContext->MarkProgramPipelineForDeletion(pipelines[i]);
-        }
-    }
-
-    void BindProgramPipeline(GLuint pipeline) {
-        if (pipeline != 0 && !MG_State::pGLContext->ValidateProgramPipelineName(pipeline)) {
-            RecordPipelineError(ErrorCode::InvalidOperation, __func__,
-                                std::format("Program pipeline name {} is not valid.", pipeline));
-            return;
-        }
-        MG_State::pGLContext->BindProgramPipelineObject(pipeline);
-    }
-
-    GLboolean IsProgramPipeline(GLuint pipeline) {
-        return MG_State::pGLContext->IsProgramPipelineObject(pipeline) ? GL_TRUE : GL_FALSE;
-    }
-
-    void GetProgramPipelineiv(GLuint pipeline, GLenum pname, GLint* params) {
-        const auto* pipelineObject = TryGetPipeline(pipeline, __func__);
-        if (!pipelineObject || !params) return;
-
-        const auto stageProgramName = [&](ShaderStage stage) -> GLint {
-            const auto& program = (*pipelineObject)->GetStageProgram(stage);
-            return program ? static_cast<GLint>(program->GetExternalIndex()) : 0;
-        };
-
-        switch (pname) {
-        case GL_ACTIVE_PROGRAM: {
-            const auto& active = (*pipelineObject)->GetActiveProgram();
-            *params = active ? static_cast<GLint>(active->GetExternalIndex()) : 0;
-            break;
-        }
-        case GL_VERTEX_SHADER: *params = stageProgramName(ShaderStage::Vertex); break;
-        case GL_TESS_CONTROL_SHADER: *params = stageProgramName(ShaderStage::TessControl); break;
-        case GL_TESS_EVALUATION_SHADER: *params = stageProgramName(ShaderStage::TessEval); break;
-        case GL_GEOMETRY_SHADER: *params = stageProgramName(ShaderStage::Geometry); break;
-        case GL_FRAGMENT_SHADER: *params = stageProgramName(ShaderStage::Fragment); break;
-        case GL_COMPUTE_SHADER: *params = stageProgramName(ShaderStage::Compute); break;
-        case GL_VALIDATE_STATUS: *params = (*pipelineObject)->GetValidateStatus() ? GL_TRUE : GL_FALSE; break;
-        case GL_INFO_LOG_LENGTH: {
-            // GL counts the null terminator, and reports 0 rather than 1 for an empty log.
-            const auto& log = (*pipelineObject)->GetInfoLog();
-            *params = log.empty() ? 0 : static_cast<GLint>(log.length()) + 1;
-            break;
-        }
-        default:
-            RecordPipelineError(ErrorCode::InvalidEnum, __func__,
-                                std::format("pname {} is not a program pipeline parameter.",
-                                            MG_Util::ConvertGLEnumToString(pname)));
-            break;
-        }
-    }
-
-    void GetProgramPipelineInfoLog(GLuint pipeline, GLsizei bufSize, GLsizei* length, GLchar* infoLog) {
-        const auto* pipelineObject = TryGetPipeline(pipeline, __func__);
-        if (!pipelineObject) return;
-        if (bufSize < 0) {
-            RecordPipelineError(ErrorCode::InvalidValue, __func__, "bufSize must be non-negative.");
-            return;
-        }
-        if (bufSize == 0 || !infoLog) {
-            if (length) *length = 0;
-            return;
-        }
-
-        const auto& log = (*pipelineObject)->GetInfoLog();
-        const auto copied = std::min<GLsizei>(bufSize - 1, static_cast<GLsizei>(log.length()));
-        if (copied > 0) Memcpy(infoLog, log.data(), static_cast<SizeT>(copied));
-        infoLog[copied] = '\0';
-        if (length) *length = copied;
-    }
-
-    void UseProgramStages(GLuint pipeline, GLbitfield stages, GLuint program) {
-        if (stages != GL_ALL_SHADER_BITS && (stages & ~kAllStageBits) != 0) {
-            RecordPipelineError(ErrorCode::InvalidValue, __func__, "stages names a bit that is not a shader stage.");
-            return;
-        }
-        const auto* pipelineObject = TryGetPipeline(pipeline, __func__);
-        if (!pipelineObject) return;
-
-        SharedPtr<MG_State::GLState::ProgramObject> programObject;
-        if (program != 0) {
-            if (!MG_State::pGLContext->ValidateProgramName(program)) {
-                RecordPipelineError(ErrorCode::InvalidValue, __func__,
-                                    std::format("{} is not the name of a program object.", program));
-                return;
-            }
-            programObject = MG_State::pGLContext->GetProgramObject(program);
-            if (!programObject) {
-                RecordPipelineError(ErrorCode::InvalidValue, __func__,
-                                    std::format("{} is not the name of a program object.", program));
-                return;
-            }
-            if (!programObject->GetLinkStatus()) {
-                RecordPipelineError(ErrorCode::InvalidOperation, __func__,
-                                    std::format("Program {} has not been linked successfully.", program));
-                return;
-            }
-        }
-
-        const GLbitfield selected = stages == GL_ALL_SHADER_BITS ? kAllStageBits : stages;
-        for (GLbitfield bit = 1; bit != 0 && bit <= kAllStageBits; bit <<= 1) {
-            if ((selected & bit) == 0) continue;
-            ShaderStage stage = ShaderStage::Unknown;
-            if (!TryResolveStageBit(bit, stage)) continue;
-            // program == 0 clears the stage, which is what a null program reference means here.
-            (*pipelineObject)->SetStageProgram(stage, programObject);
-        }
-    }
-
-    void ActiveShaderProgram(GLuint pipeline, GLuint program) {
-        const auto* pipelineObject = TryGetPipeline(pipeline, __func__);
-        if (!pipelineObject) return;
-
-        if (program == 0) {
-            (*pipelineObject)->SetActiveProgram(nullptr);
-            return;
-        }
-        if (!MG_State::pGLContext->ValidateProgramName(program)) {
-            RecordPipelineError(ErrorCode::InvalidValue, __func__,
-                                std::format("{} is not the name of a program object.", program));
-            return;
-        }
-        auto programObject = MG_State::pGLContext->GetProgramObject(program);
-        if (!programObject) {
-            RecordPipelineError(ErrorCode::InvalidValue, __func__,
-                                std::format("{} is not the name of a program object.", program));
-            return;
-        }
-        if (!programObject->GetLinkStatus()) {
-            RecordPipelineError(ErrorCode::InvalidOperation, __func__,
-                                std::format("Program {} has not been linked successfully.", program));
-            return;
-        }
-        (*pipelineObject)->SetActiveProgram(programObject);
-    }
-
-    void ValidateProgramPipeline(GLuint pipeline) {
-        const auto* pipelineObject = TryGetPipeline(pipeline, __func__);
-        if (!pipelineObject) return;
-        // Nothing here can fail today: MobileGL links each stage program on its own, so there is no
-        // cross-stage interface to re-check at validation time. The log stays empty, which GL allows.
-        (*pipelineObject)->SetValidateStatus(true);
-    }
-} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Program/GL_ProgramPipeline.h

@@ -1,23 +0,0 @@
-// MobileGL - MobileGL/MG_Impl/GLImpl/Program/GL_ProgramPipeline.h
-// Copyright (c) 2025-2026 MobileGL-Dev
-// Licensed under the GNU Lesser General Public License v3.0:
-//   https://www.gnu.org/licenses/gpl-3.0.txt
-//   https://www.gnu.org/licenses/lgpl-3.0.txt
-// SPDX-License-Identifier: LGPL-3.0-only
-// End of Source File Header
-
-#pragma once
-#include <Includes.h>
-
-namespace MobileGL::MG_Impl::GLImpl {
-    void GenProgramPipelines(GLsizei n, GLuint* pipelines);
-    void CreateProgramPipelines(GLsizei n, GLuint* pipelines);
-    void DeleteProgramPipelines(GLsizei n, const GLuint* pipelines);
-    void BindProgramPipeline(GLuint pipeline);
-    GLboolean IsProgramPipeline(GLuint pipeline);
-    void GetProgramPipelineiv(GLuint pipeline, GLenum pname, GLint* params);
-    void GetProgramPipelineInfoLog(GLuint pipeline, GLsizei bufSize, GLsizei* length, GLchar* infoLog);
-    void UseProgramStages(GLuint pipeline, GLbitfield stages, GLuint program);
-    void ActiveShaderProgram(GLuint pipeline, GLuint program);
-    void ValidateProgramPipeline(GLuint pipeline);
-} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Query/GL_Query.cpp

@@ -7,7 +7,6 @@
 // End of Source File Header
 
 #include "GL_Query.h"
-#include "../Getter/GL_Getter.h"
 #include <Config.h>
 #include <MG_Backend/BackendObjects.h>
 #include <MG_State/GLState/Core.h>
@@ -23,16 +22,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         struct QueryObject {
             GLuint id = 0;
             GLenum target = 0; // 0 = gen'd but never used with BeginQuery/QueryCounter
-            // glCreateQueries makes the object outright; glGenQueries only reserves the name,
-            // and the object appears when the name is first used (GL 4.6 core 4.2.1).
-            Bool created = false;
             MG_Backend::BackendQueryHandle backendHandle = nullptr;
             Bool active = false;
             Bool ended = false;
             Bool resultCached = false;
             Uint64 cachedResult = 0;
-            // Transform feedback primitive counter at BeginQuery time.
-            Uint64 counterSnapshot = 0;
         };
 
         // Query calls may arrive from any thread (launchers migrate the context
@@ -47,11 +41,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         GLuint g_nextQueryId = 1;
         // Id of the query currently active on GL_TIME_ELAPSED (0 = none).
         GLuint g_activeTimeElapsedQueryId = 0;
-        // Ids of the queries active on the transform feedback targets (0 = none).
-        GLuint g_activePrimitivesWrittenQueryId = 0;
-        GLuint g_activePrimitivesGeneratedQueryId = 0;
-        // Id of the query active on GL_SAMPLES_PASSED (0 = none).
-        GLuint g_activeSamplesPassedQueryId = 0;
 
         Bool TimerQueryDisabled() {
             return MG_Config::Features.DisableTimerQuery;
@@ -62,34 +51,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                                               MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", function, message));
         }
 
-        // The by-buffer query getters write the result into a buffer object instead of client
-        // memory. Everything about the query itself - the name, whether it is still active, the
-        // parameter - is checked by GetQueryObjectValue; what is left is the destination, so this
-        // resolves the buffer and confirms the write lands inside it (GL 4.6 core 4.2.1).
-        Bool ResolveQueryResultDestination(GLuint buffer, GLintptr offset, SizeT writeSize, const char* function,
-                                           SharedPtr<MG_State::GLState::BufferObject>& outBuffer) {
-            if (offset < 0) {
-                RecordQueryError(ErrorCode::InvalidValue, function, "Offset cannot be negative.");
-                return false;
-            }
-            if (!MG_State::pGLContext->ValidateBufferObject(buffer)) {
-                RecordQueryError(ErrorCode::InvalidOperation, function, "Buffer object does not exist.");
-                return false;
-            }
-            auto bufferObject = MG_State::pGLContext->GetBufferObject(buffer);
-            if (!bufferObject) {
-                RecordQueryError(ErrorCode::InvalidOperation, function, "Buffer object does not exist.");
-                return false;
-            }
-            if (static_cast<SizeT>(offset) + writeSize > bufferObject->GetSize()) {
-                RecordQueryError(ErrorCode::InvalidOperation, function,
-                                 "The query result does not fit in the buffer object at this offset.");
-                return false;
-            }
-            outBuffer = bufferObject;
-            return true;
-        }
-
         // Callers must hold g_queryObjectsMutex.
         QueryObject* FindQueryObjectLocked(GLuint id) {
             const auto it = g_liveQueryObjects.find(id);
@@ -123,13 +84,8 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
 
         // Shared GetQueryObject* implementation. Returns false when an error
-        // was recorded and no value should be written back. `outValueProduced`, when given,
-        // additionally distinguishes "succeeded with a value" from "succeeded but the result is not
-        // ready" - the GL_QUERY_RESULT_NO_WAIT case, where GL_ARB_query_buffer_object says the
-        // destination is left alone rather than written with a placeholder.
-        Bool GetQueryObjectValue(GLuint id, GLenum pname, const char* function, Uint64& outValue,
-                                 Bool* outValueProduced = nullptr) {
-            if (outValueProduced) *outValueProduced = true;
+        // was recorded and no value should be written back.
+        Bool GetQueryObjectValue(GLuint id, GLenum pname, const char* function, Uint64& outValue) {
             const std::lock_guard<std::mutex> lock(g_queryObjectsMutex);
             auto* queryObject = FindQueryObjectLocked(id);
             if (!queryObject) {
@@ -142,41 +98,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             }
 
             switch (pname) {
-            case GL_QUERY_TARGET:
-                // The target a query was begun with (or created with, for glCreateQueries) - state
-                // the object has carried all along, GL 4.6 core table 23.35.
-                outValue = queryObject->target;
-                return true;
-            case GL_QUERY_RESULT_NO_WAIT: {
-                if (queryObject->resultCached) {
-                    outValue = queryObject->cachedResult;
-                    return true;
-                }
-                Uint64 result = 0;
-                const auto getQueryResult64 = MG_Backend::gBackendFunctionsTable.GL.GetQueryResult64;
-                if (queryObject->backendHandle && getQueryResult64 &&
-                    !getQueryResult64(queryObject->backendHandle, /*wait=*/false, &result)) {
-                    // Not ready. The whole point of the no-wait form is that the caller's
-                    // destination keeps whatever it already held.
-                    if (outValueProduced) *outValueProduced = false;
-                    outValue = 0;
-                    return true;
-                }
-                if (queryObject->target == GL_ANY_SAMPLES_PASSED ||
-                    queryObject->target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) {
-                    result = result != 0 ? 1 : 0;
-                }
-                if (queryObject->backendHandle) {
-                    if (const auto deleteBackendQuery = MG_Backend::gBackendFunctionsTable.GL.DeleteBackendQuery) {
-                        deleteBackendQuery(queryObject->backendHandle);
-                    }
-                    queryObject->backendHandle = nullptr;
-                }
-                queryObject->cachedResult = result;
-                queryObject->resultCached = true;
-                outValue = result;
-                return true;
-            }
             case GL_QUERY_RESULT_AVAILABLE: {
                 if (queryObject->resultCached || !queryObject->backendHandle) {
                     outValue = 1;
@@ -205,11 +126,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                         outValue = 0;
                         return true;
                     }
-                    // ANY_SAMPLES_PASSED* report a boolean.
-                    if (queryObject->target == GL_ANY_SAMPLES_PASSED ||
-                        queryObject->target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) {
-                        result = result != 0 ? 1 : 0;
-                    }
                     // Final value produced (or no GetQueryResult64 hook: the
                     // query degrades to a zero result); the backend handle is
                     // consumed and the value cached for later reads.
@@ -228,21 +144,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                 return false;
             }
         }
-
-        template <typename T>
-        void GetQueryBufferObject(GLuint id, GLuint buffer, GLenum pname, GLintptr offset, const char* function) {
-            SharedPtr<MG_State::GLState::BufferObject> bufferObject;
-            if (!ResolveQueryResultDestination(buffer, offset, sizeof(T), function, bufferObject)) return;
-
-            Uint64 value = 0;
-            Bool valueProduced = false;
-            if (!GetQueryObjectValue(id, pname, function, value, &valueProduced)) return;
-            // GL_QUERY_RESULT_NO_WAIT on a result that has not landed writes nothing at all.
-            if (!valueProduced) return;
-
-            const T narrowed = static_cast<T>(value);
-            bufferObject->UploadSubData({const_cast<T*>(&narrowed), sizeof(T)}, static_cast<SizeT>(offset));
-        }
     } // namespace
 
     void GenQueries(GLsizei n, GLuint* ids) {
@@ -263,41 +164,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
     }
 
-    // glCreateQueries differs from glGenQueries in creating the objects outright, with their
-    // target already fixed and the rest of their state at the defaults (GL 4.6 core 4.2.1).
-    void CreateQueries(GLenum target, GLsizei n, GLuint* ids) {
-        switch (target) {
-        case GL_SAMPLES_PASSED:
-        case GL_ANY_SAMPLES_PASSED:
-        case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
-        case GL_TIME_ELAPSED:
-        case GL_TIMESTAMP:
-        case GL_PRIMITIVES_GENERATED:
-        case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
-            break;
-        default:
-            RecordQueryError(ErrorCode::InvalidEnum, __FUNCTION__, "Query target is not accepted.");
-            return;
-        }
-        if (n < 0) {
-            RecordQueryError(ErrorCode::InvalidValue, __FUNCTION__, "n cannot be negative.");
-            return;
-        }
-        if (!ids) {
-            return;
-        }
-        const std::lock_guard<std::mutex> lock(g_queryObjectsMutex);
-        for (GLsizei i = 0; i < n; ++i) {
-            const GLuint id = g_nextQueryId++;
-            auto* queryObject = new QueryObject;
-            queryObject->id = id;
-            queryObject->target = target;
-            queryObject->created = true;
-            g_liveQueryObjects[id] = queryObject;
-            ids[i] = id;
-        }
-    }
-
     void DeleteQueries(GLsizei n, const GLuint* ids) {
         if (n < 0) {
             RecordQueryError(ErrorCode::InvalidValue, __FUNCTION__, "n cannot be negative.");
@@ -314,24 +180,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             }
             QueryObject* queryObject = it->second;
             if (queryObject->active) {
-                // Implicitly end before deletion, releasing the matching active slot.
-                if (queryObject->target == GL_SAMPLES_PASSED || queryObject->target == GL_ANY_SAMPLES_PASSED ||
-                    queryObject->target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) {
-                    if (const auto endOcclusionQuery = MG_Backend::gBackendFunctionsTable.GL.EndOcclusionQuery;
-                        endOcclusionQuery && queryObject->backendHandle) {
-                        endOcclusionQuery(queryObject->backendHandle);
-                    }
-                    queryObject->active = false;
-                    g_activeSamplesPassedQueryId = 0;
-                } else if (queryObject->target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN ||
-                           queryObject->target == GL_PRIMITIVES_GENERATED) {
-                    queryObject->active = false;
-                    (queryObject->target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN
-                         ? g_activePrimitivesWrittenQueryId
-                         : g_activePrimitivesGeneratedQueryId) = 0;
-                } else {
-                    EndTimeElapsedQueryLocked(queryObject);
-                }
+                EndTimeElapsedQueryLocked(queryObject); // implicitly end before deletion
             }
             if (queryObject->backendHandle) {
                 if (const auto deleteBackendQuery = MG_Backend::gBackendFunctionsTable.GL.DeleteBackendQuery) {
@@ -349,23 +198,16 @@ namespace MobileGL::MG_Impl::GLImpl {
             return GL_FALSE;
         }
         const std::lock_guard<std::mutex> lock(g_queryObjectsMutex);
-        // A name from glGenQueries is not yet a query object: it becomes one when it is first
-        // used with BeginQuery/QueryCounter (which is what a non-zero target records), or
-        // immediately if it came from glCreateQueries.
-        const auto* queryObject = FindQueryObjectLocked(id);
-        return (queryObject != nullptr && (queryObject->created || queryObject->target != 0)) ? GL_TRUE : GL_FALSE;
+        // Gen'd ids count as query objects here: the registry creates live
+        // objects at GenQueries time.
+        return FindQueryObjectLocked(id) != nullptr ? GL_TRUE : GL_FALSE;
     }
 
     void BeginQuery(GLenum target, GLuint id) {
-        const Bool isTransformFeedbackQuery =
-            target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN || target == GL_PRIMITIVES_GENERATED;
-        const Bool isOcclusionQuery =
-            (target == GL_SAMPLES_PASSED || target == GL_ANY_SAMPLES_PASSED ||
-             target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) &&
-            MG_Backend::gBackendFunctionsTable.GL.BeginOcclusionQuery != nullptr;
-        if (target != GL_TIME_ELAPSED && !isTransformFeedbackQuery && !isOcclusionQuery) {
-            // GL_TIMESTAMP is not a valid BeginQuery target; the occlusion targets
-            // need backend support.
+        if (target != GL_TIME_ELAPSED) {
+            // Only GL_TIME_ELAPSED timer queries are implemented (occlusion and
+            // primitive queries remain stubs); GL_TIMESTAMP is not a valid
+            // BeginQuery target either.
             RecordQueryError(ErrorCode::InvalidEnum, __FUNCTION__, "Query target is not supported.");
             return;
         }
@@ -379,13 +221,9 @@ namespace MobileGL::MG_Impl::GLImpl {
             RecordQueryError(ErrorCode::InvalidOperation, __FUNCTION__, "Query object does not exist.");
             return;
         }
-        GLuint& activeQueryId = isTransformFeedbackQuery
-            ? (target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN ? g_activePrimitivesWrittenQueryId
-                                                                  : g_activePrimitivesGeneratedQueryId)
-            : (isOcclusionQuery ? g_activeSamplesPassedQueryId : g_activeTimeElapsedQueryId);
-        if (activeQueryId != 0) {
+        if (g_activeTimeElapsedQueryId != 0) {
             RecordQueryError(ErrorCode::InvalidOperation, __FUNCTION__,
-                             "A query is already active on this target.");
+                             "A query is already active on GL_TIME_ELAPSED.");
             return;
         }
         if (queryObject->active) {
@@ -401,72 +239,25 @@ namespace MobileGL::MG_Impl::GLImpl {
         ResetQueryObjectLocked(queryObject); // discard any previous result
         queryObject->target = target;
         queryObject->active = true;
-        if (isTransformFeedbackQuery) {
-            // Prefer real GPU transform-feedback queries (exact with geometry shaders);
-            // the CPU accounting delta stays as the fallback when the backend lacks them.
-            const auto beginXfbPrimitivesQuery = MG_Backend::gBackendFunctionsTable.GL.BeginXfbPrimitivesQuery;
-            queryObject->backendHandle =
-                beginXfbPrimitivesQuery ? beginXfbPrimitivesQuery(target == GL_PRIMITIVES_GENERATED) : nullptr;
-            queryObject->counterSnapshot = MG_State::pGLContext->GetTransformFeedbackPrimitiveCounter();
-        } else if (isOcclusionQuery) {
-            queryObject->backendHandle = MG_Backend::gBackendFunctionsTable.GL.BeginOcclusionQuery();
-        } else {
-            const auto beginTimeElapsedQuery = MG_Backend::gBackendFunctionsTable.GL.BeginTimeElapsedQuery;
-            queryObject->backendHandle =
-                (!TimerQueryDisabled() && beginTimeElapsedQuery) ? beginTimeElapsedQuery() : nullptr;
-        }
-        activeQueryId = id;
+        const auto beginTimeElapsedQuery = MG_Backend::gBackendFunctionsTable.GL.BeginTimeElapsedQuery;
+        queryObject->backendHandle =
+            (!TimerQueryDisabled() && beginTimeElapsedQuery) ? beginTimeElapsedQuery() : nullptr;
+        g_activeTimeElapsedQueryId = id;
     }
 
     void EndQuery(GLenum target) {
-        const Bool isTransformFeedbackQuery =
-            target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN || target == GL_PRIMITIVES_GENERATED;
-        const Bool isOcclusionQuery =
-            (target == GL_SAMPLES_PASSED || target == GL_ANY_SAMPLES_PASSED ||
-             target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) &&
-            MG_Backend::gBackendFunctionsTable.GL.BeginOcclusionQuery != nullptr;
-        if (target != GL_TIME_ELAPSED && !isTransformFeedbackQuery && !isOcclusionQuery) {
+        if (target != GL_TIME_ELAPSED) {
             RecordQueryError(ErrorCode::InvalidEnum, __FUNCTION__, "Query target is not supported.");
             return;
         }
         const std::lock_guard<std::mutex> lock(g_queryObjectsMutex);
-        GLuint& activeQueryId = isTransformFeedbackQuery
-            ? (target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN ? g_activePrimitivesWrittenQueryId
-                                                                  : g_activePrimitivesGeneratedQueryId)
-            : (isOcclusionQuery ? g_activeSamplesPassedQueryId : g_activeTimeElapsedQueryId);
-        if (activeQueryId == 0) {
-            RecordQueryError(ErrorCode::InvalidOperation, __FUNCTION__, "No query is active on this target.");
+        if (g_activeTimeElapsedQueryId == 0) {
+            RecordQueryError(ErrorCode::InvalidOperation, __FUNCTION__, "No query is active on GL_TIME_ELAPSED.");
             return;
         }
-        auto* queryObject = FindQueryObjectLocked(activeQueryId);
+        auto* queryObject = FindQueryObjectLocked(g_activeTimeElapsedQueryId);
         if (!queryObject) {
-            activeQueryId = 0; // should not happen; keep state consistent
-            return;
-        }
-        if (isTransformFeedbackQuery) {
-            if (queryObject->backendHandle) {
-                if (const auto endXfbPrimitivesQuery = MG_Backend::gBackendFunctionsTable.GL.EndXfbPrimitivesQuery) {
-                    endXfbPrimitivesQuery(queryObject->backendHandle);
-                }
-                // Result comes from the GPU query at read time.
-            } else {
-                queryObject->cachedResult =
-                    MG_State::pGLContext->GetTransformFeedbackPrimitiveCounter() - queryObject->counterSnapshot;
-                queryObject->resultCached = true;
-            }
-            queryObject->active = false;
-            queryObject->ended = true;
-            activeQueryId = 0;
-            return;
-        }
-        if (isOcclusionQuery) {
-            if (const auto endOcclusionQuery = MG_Backend::gBackendFunctionsTable.GL.EndOcclusionQuery;
-                endOcclusionQuery && queryObject->backendHandle) {
-                endOcclusionQuery(queryObject->backendHandle);
-            }
-            queryObject->active = false;
-            queryObject->ended = true;
-            activeQueryId = 0;
+            g_activeTimeElapsedQueryId = 0; // should not happen; keep state consistent
             return;
         }
         EndTimeElapsedQueryLocked(queryObject);
@@ -512,25 +303,9 @@ namespace MobileGL::MG_Impl::GLImpl {
         switch (pname) {
         case GL_CURRENT_QUERY: {
             const std::lock_guard<std::mutex> lock(g_queryObjectsMutex);
-            switch (target) {
-            case GL_TIME_ELAPSED:
-                *params = static_cast<GLint>(g_activeTimeElapsedQueryId);
-                break;
-            case GL_SAMPLES_PASSED:
-            case GL_ANY_SAMPLES_PASSED:
-            case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
-                *params = static_cast<GLint>(g_activeSamplesPassedQueryId);
-                break;
-            case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
-                *params = static_cast<GLint>(g_activePrimitivesWrittenQueryId);
-                break;
-            case GL_PRIMITIVES_GENERATED:
-                *params = static_cast<GLint>(g_activePrimitivesGeneratedQueryId);
-                break;
-            default:
-                *params = 0;
-                break;
-            }
+            // Only GL_TIME_ELAPSED queries can be active; GL_TIMESTAMP queries
+            // never are, and other targets remain unimplemented.
+            *params = target == GL_TIME_ELAPSED ? static_cast<GLint>(g_activeTimeElapsedQueryId) : 0;
             return;
         }
         case GL_QUERY_COUNTER_BITS: {
@@ -538,13 +313,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             // time: IsTimerQuerySupported is the dynamic truth (extension /
             // entry points / timestamp valid bits at call time, not at table
             // init), and the MOBILEGL_DISABLE_TIMERQUERY kill switch always
-            // wins.
-            if (target == GL_SAMPLES_PASSED || target == GL_ANY_SAMPLES_PASSED ||
-                target == GL_ANY_SAMPLES_PASSED_CONSERVATIVE) {
-                const Bool occlusionSupported = MG_Backend::gBackendFunctionsTable.GL.BeginOcclusionQuery != nullptr;
-                *params = occlusionSupported ? (target == GL_SAMPLES_PASSED ? 32 : 1) : 0;
-                return;
-            }
+            // wins. Non-timer targets remain unimplemented and report 0.
             const Bool timerTarget = target == GL_TIME_ELAPSED || target == GL_TIMESTAMP;
             const auto isTimerQuerySupported = MG_Backend::gBackendFunctionsTable.GL.IsTimerQuerySupported;
             const Bool supported =
@@ -558,26 +327,9 @@ namespace MobileGL::MG_Impl::GLImpl {
         }
     }
 
-    void GetQueryBufferObjectiv(GLuint id, GLuint buffer, GLenum pname, GLintptr offset) {
-        GetQueryBufferObject<GLint>(id, buffer, pname, offset, __FUNCTION__);
-    }
-
-    void GetQueryBufferObjectuiv(GLuint id, GLuint buffer, GLenum pname, GLintptr offset) {
-        GetQueryBufferObject<GLuint>(id, buffer, pname, offset, __FUNCTION__);
-    }
-
-    void GetQueryBufferObjecti64v(GLuint id, GLuint buffer, GLenum pname, GLintptr offset) {
-        GetQueryBufferObject<GLint64>(id, buffer, pname, offset, __FUNCTION__);
-    }
-
-    void GetQueryBufferObjectui64v(GLuint id, GLuint buffer, GLenum pname, GLintptr offset) {
-        GetQueryBufferObject<GLuint64>(id, buffer, pname, offset, __FUNCTION__);
-    }
-
     void GetQueryObjectiv(GLuint id, GLenum pname, GLint* params) {
         Uint64 value = 0;
-        Bool valueProduced = false;
-        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value, &valueProduced) || !valueProduced || !params) {
+        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value) || !params) {
             return;
         }
         constexpr Uint64 kMaxInt = static_cast<Uint64>(INT_MAX);
@@ -586,8 +338,7 @@ namespace MobileGL::MG_Impl::GLImpl {
 
     void GetQueryObjectuiv(GLuint id, GLenum pname, GLuint* params) {
         Uint64 value = 0;
-        Bool valueProduced = false;
-        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value, &valueProduced) || !valueProduced || !params) {
+        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value) || !params) {
             return;
         }
         *params = static_cast<GLuint>(value & 0xFFFFFFFFull);
@@ -595,8 +346,7 @@ namespace MobileGL::MG_Impl::GLImpl {
 
     void GetQueryObjecti64v(GLuint id, GLenum pname, GLint64* params) {
         Uint64 value = 0;
-        Bool valueProduced = false;
-        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value, &valueProduced) || !valueProduced || !params) {
+        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value) || !params) {
             return;
         }
         *params = static_cast<GLint64>(value);
@@ -604,48 +354,9 @@ namespace MobileGL::MG_Impl::GLImpl {
 
     void GetQueryObjectui64v(GLuint id, GLenum pname, GLuint64* params) {
         Uint64 value = 0;
-        Bool valueProduced = false;
-        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value, &valueProduced) || !valueProduced || !params) {
+        if (!GetQueryObjectValue(id, pname, __FUNCTION__, value) || !params) {
             return;
         }
         *params = static_cast<GLuint64>(value);
     }
-
-    namespace {
-        // The indexed query entry points differ from the plain ones only in the vertex
-        // stream they address (GL 4.6 core 4.2.1): index must be below GL_MAX_VERTEX_STREAMS
-        // for the two transform feedback targets and zero for every other target. With a
-        // single vertex stream both bounds are 1, so a valid call is always index 0 and
-        // forwards to the unindexed implementation.
-        Bool ValidateQueryStreamIndex(const char* function, GLenum target, GLuint index) {
-            const Bool perStreamTarget =
-                target == GL_PRIMITIVES_GENERATED || target == GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN;
-            GLint maxVertexStreams = 1;
-            if (perStreamTarget) {
-                GetIntegerv(GL_MAX_VERTEX_STREAMS, &maxVertexStreams);
-            }
-            if (index < static_cast<GLuint>(std::max(maxVertexStreams, 1))) {
-                return true;
-            }
-            RecordQueryError(ErrorCode::InvalidValue, function,
-                             perStreamTarget ? "index is not less than GL_MAX_VERTEX_STREAMS."
-                                             : "index must be zero for this query target.");
-            return false;
-        }
-    } // namespace
-
-    void BeginQueryIndexed(GLenum target, GLuint index, GLuint id) {
-        if (!ValidateQueryStreamIndex(__FUNCTION__, target, index)) return;
-        BeginQuery(target, id);
-    }
-
-    void EndQueryIndexed(GLenum target, GLuint index) {
-        if (!ValidateQueryStreamIndex(__FUNCTION__, target, index)) return;
-        EndQuery(target);
-    }
-
-    void GetQueryIndexediv(GLenum target, GLuint index, GLenum pname, GLint* params) {
-        if (!ValidateQueryStreamIndex(__FUNCTION__, target, index)) return;
-        GetQueryiv(target, pname, params);
-    }
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Query/GL_Query.h

@@ -11,22 +11,14 @@
 
 namespace MobileGL::MG_Impl::GLImpl {
     void GenQueries(GLsizei n, GLuint* ids);
-    void CreateQueries(GLenum target, GLsizei n, GLuint* ids);
     void DeleteQueries(GLsizei n, const GLuint* ids);
     GLboolean IsQuery(GLuint id);
     void BeginQuery(GLenum target, GLuint id);
     void EndQuery(GLenum target);
     void GetQueryiv(GLenum target, GLenum pname, GLint* params);
-    void BeginQueryIndexed(GLenum target, GLuint index, GLuint id);
-    void EndQueryIndexed(GLenum target, GLuint index);
-    void GetQueryIndexediv(GLenum target, GLuint index, GLenum pname, GLint* params);
     void GetQueryObjectiv(GLuint id, GLenum pname, GLint* params);
     void GetQueryObjectuiv(GLuint id, GLenum pname, GLuint* params);
     void GetQueryObjecti64v(GLuint id, GLenum pname, GLint64* params);
     void GetQueryObjectui64v(GLuint id, GLenum pname, GLuint64* params);
-    void GetQueryBufferObjectiv(GLuint id, GLuint buffer, GLenum pname, GLintptr offset);
-    void GetQueryBufferObjectuiv(GLuint id, GLuint buffer, GLenum pname, GLintptr offset);
-    void GetQueryBufferObjecti64v(GLuint id, GLuint buffer, GLenum pname, GLintptr offset);
-    void GetQueryBufferObjectui64v(GLuint id, GLuint buffer, GLenum pname, GLintptr offset);
     void QueryCounter(GLuint id, GLenum target);
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Sampler/GL_Sampler.cpp

@@ -28,11 +28,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             case GL_TEXTURE_MAX_LOD:
             case GL_TEXTURE_LOD_BIAS:
                 return true;
-            // Four components, and GL puts no range on them - a border colour outside [0,1] is
-            // clamped when a fixed-point format is sampled, not rejected here. The scalar readers
-            // below would look at one component and invent an error.
-            case GL_TEXTURE_BORDER_COLOR:
-                return true;
             case GL_TEXTURE_MAX_ANISOTROPY_EXT:
                 if (ReadSamplerScalar(param, isFloat, isUnsignedInteger) >= 1.0f) return true;
                 MG_State::pGLContext->RecordError(
@@ -104,20 +99,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_TEXTURE_COMPARE_FUNC:
             samplerObj->SetSamplerCompareFunc(MG_Util::ConvertGLEnumToSamplerCompareFunc(*(const GLint*)param));
             break;
-        case GL_TEXTURE_BORDER_COLOR:
-            // The only four-component sampler parameter: the caller's form decides which
-            // representation is authoritative, and SamplerObject keeps the other two in step.
-            if (isFloat) {
-                const auto* values = (const GLfloat*)param;
-                samplerObj->SetBorderColor(FloatVec4(values[0], values[1], values[2], values[3]));
-            } else if (isUnsignedInteger) {
-                const auto* values = (const GLuint*)param;
-                samplerObj->SetBorderColorUI(UintVec4(values[0], values[1], values[2], values[3]));
-            } else {
-                const auto* values = (const GLint*)param;
-                samplerObj->SetBorderColorI(IntVec4(values[0], values[1], values[2], values[3]));
-            }
-            break;
         default:
             MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
                                               MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "SetSamplerParam_State",
@@ -181,31 +162,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_TEXTURE_COMPARE_FUNC:
             *(GLuint*)params = MG_Util::ConvertSamplerCompareFuncToGLEnum(samplerObj->GetSamplerCompareFunc());
             break;
-        case GL_TEXTURE_BORDER_COLOR: {
-            if (isFloat) {
-                const auto& color = samplerObj->GetBorderColor();
-                auto* out = (GLfloat*)params;
-                out[0] = color.x();
-                out[1] = color.y();
-                out[2] = color.z();
-                out[3] = color.w();
-            } else if (isUnsignedInteger) {
-                const auto& color = samplerObj->GetBorderColorUI();
-                auto* out = (GLuint*)params;
-                out[0] = color.x();
-                out[1] = color.y();
-                out[2] = color.z();
-                out[3] = color.w();
-            } else {
-                const auto& color = samplerObj->GetBorderColorI();
-                auto* out = (GLint*)params;
-                out[0] = color.x();
-                out[1] = color.y();
-                out[2] = color.z();
-                out[3] = color.w();
-            }
-            break;
-        }
         default:
             MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
                                               MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetSamplerParam_State",
@@ -229,11 +185,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         static thread_local Vector<GLuint> names;
         MG_State::pGLContext->GenSamplerNames(count, names);
         Memcpy(samplers, names.data(), count * sizeof(GLuint));
-        // Unlike textures/buffers, glGenSamplers CREATES the sampler objects: each name
-        // is immediately a sampler (glIsSampler == GL_TRUE before any bind).
-        for (GLsizei i = 0; i < count; ++i) {
-            MG_State::pGLContext->CreateSamplerObject(names[i]);
-        }
     }
 
     void DeleteSamplers_State(GLsizei count, const GLuint* samplers) {

MobileGL/MG_Impl/GLImpl/Sync/GL_Sync.cpp

@@ -133,33 +133,4 @@ namespace MobileGL::MG_Impl::GLImpl {
             values[0] = value;
         }
     }
-
-    void DestroyAllSyncObjects() {
-        // Detach the registry under the lock, release outside it. Entries the app
-        // already deleted were erased by DeleteSync, so nothing here double-frees;
-        // a DeleteSync racing this sweep finds an empty registry and returns. A
-        // thread still blocked inside ClientWaitSync/GetSynciv during teardown
-        // holds a raw SyncObject* these deletes invalidate - the same undefined
-        // race an app-driven DeleteSync already has.
-        UnorderedMap<GLsync, SyncObject*> orphans;
-        {
-            const std::lock_guard<std::mutex> lock(g_syncObjectsMutex);
-            orphans.swap(g_liveSyncObjects);
-        }
-        if (orphans.empty()) {
-            return;
-        }
-        // Both backends' DeleteSync only free the heap wrapper once their GL
-        // context/renderer is gone (generation/current-thread guards), so this is
-        // safe after the backend has released its EGL resources - but not after
-        // the function table itself is cleared.
-        const auto backendDeleteSync = MG_Backend::gBackendFunctionsTable.GL.DeleteSync;
-        for (const auto& [_, syncObject] : orphans) {
-            if (backendDeleteSync && syncObject->backendHandle) {
-                backendDeleteSync(syncObject->backendHandle);
-            }
-            delete syncObject;
-        }
-        MGLOG_D("DestroyAllSyncObjects: reclaimed %zu sync object(s) the app left undeleted", orphans.size());
-    }
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Sync/GL_Sync.h

@@ -16,12 +16,4 @@ namespace MobileGL::MG_Impl::GLImpl {
     void WaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout);
     void DeleteSync(GLsync sync);
     void GetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei* length, GLint* values);
-    // Destroys every still-registered sync object exactly as DeleteSync would.
-    // GL requires syncs to die with their context; called only from full library
-    // teardown (DestroyImpl), where no context survives on any thread, so the
-    // process-global registry can be drained wholesale. Must run while the
-    // backend function table is still populated: each backend handle has to be
-    // released by the backend that created it, never by a later re-initialized
-    // one.
-    void DestroyAllSyncObjects();
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Texture/GL_Texture.h

@@ -11,10 +11,6 @@
 
 namespace MobileGL::MG_Impl::GLImpl {
     /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-    // The sized internal formats a buffer texture accepts (GL 4.6 core table 8.16). The buffer
-    // clears take the same list, so it is shared rather than written out twice.
-    Bool IsBufferTextureInternalFormat(GLenum internalformat);
-
     void ClearTexImage(GLuint texture, GLint level, GLenum format, GLenum type, const void* data);
     void ClearTexSubImage(GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
                           GLsizei height, GLsizei depth, GLenum format, GLenum type, const void* data);
@@ -46,10 +42,6 @@ namespace MobileGL::MG_Impl::GLImpl {
     void GenerateTextureMipmap(GLuint texture);
     void BindTextureUnit(GLuint unit, GLuint texture);
     void GetTextureImage(GLuint texture, GLint level, GLenum format, GLenum type, GLsizei bufSize, void* pixels);
-    void GetCompressedTextureImage(GLuint texture, GLint level, GLsizei bufSize, void* pixels);
-    void TexBufferRange(GLenum target, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size);
-    void TextureBuffer(GLuint texture, GLenum internalformat, GLuint buffer);
-    void TextureBufferRange(GLuint texture, GLenum internalformat, GLuint buffer, GLintptr offset, GLsizeiptr size);
     void GetTextureSubImage(GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width,
                             GLsizei height, GLsizei depth, GLenum format, GLenum type, GLsizei bufSize, void* pixels);
     void GetTextureParameterfv(GLuint texture, GLenum pname, GLfloat* params);
@@ -106,9 +98,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                            GLsizei width, GLsizei height);
     void CopyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width,
                            GLsizei height);
-    void CopyTextureSubImage1D(GLuint texture, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
-    void CopyTextureSubImage3D(GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x,
-                               GLint y, GLsizei width, GLsizei height);
     void CopyTextureSubImage2D(GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y,
                                GLsizei width, GLsizei height);
     void CopyTexSubImage1D(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);

MobileGL/MG_Impl/GLImpl/Texture/Validators.cpp

@@ -226,9 +226,6 @@ namespace MobileGL::MG_Impl::GLImpl::TextureImpl {
             case TextureInternalFormat::Depth24Stencil8:
             case TextureInternalFormat::Depth32FStencil8:
             case TextureInternalFormat::DepthStencil:
-            // Stencil-only is not a colour format either: a colour client format read against a
-            // STENCIL_INDEX8 texture has to be the same INVALID_OPERATION as against a depth one.
-            case TextureInternalFormat::StencilIndex8:
                 return true;
             default:
                 return false;

MobileGL/MG_Impl/GLImpl/VertexArray/GL_VertexArray.cpp

@@ -8,7 +8,6 @@
 
 #include "GL_VertexArray.h"
 #include "Validators.h"
-#include <MG_Backend/BackendObjects.h>
 #include <MG_Impl/GLImpl/Buffer/Validators.h>
 #include <MG_State/GLState/Core.h>
 #include <MG_State/GLState/ErrorState/Error.h>
@@ -106,45 +105,12 @@ namespace MobileGL::MG_Impl::GLImpl {
             return pname == GL_CURRENT_VERTEX_ATTRIB;
         }
 
-        // The stride a pointer-style call gives its binding point: the argument when it is non-zero,
-        // otherwise the tightly packed element size (GL 4.6 core 10.3.2). A packed 2_10_10_10 or
-        // 10F_11F_11F attribute is one 32-bit word regardless of its component count.
-        static int EffectiveVertexStride(GLsizei stride, GLint size, GLenum type) {
-            if (stride != 0) return static_cast<int>(stride);
-            switch (type) {
-            case GL_INT_2_10_10_10_REV:
-            case GL_UNSIGNED_INT_2_10_10_10_REV:
-            case GL_UNSIGNED_INT_10F_11F_11F_REV:
-                return 4;
-            default:
-                break;
-            }
-            return static_cast<int>(size * MG_Util::GetGLTypeSize(type));
-        }
-
-        // glBindVertexBuffers / glVertexArrayVertexBuffers take a range of binding points, and a
-        // range that runs past the last one is INVALID_OPERATION rather than the INVALID_VALUE a
-        // single out-of-range index gets (GL 4.6 core 10.3.1).
-        static bool ValidateVertexBindingRange(GLuint first, GLsizei count, const char* funcName) {
-            if (count < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName, "count must be non-negative."));
-                return false;
-            }
-            if (static_cast<Uint64>(first) + static_cast<Uint64>(count) >
-                VertexArrayImpl::GetMaxVertexAttribBindings()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
-                                                 "first + count exceeds GL_MAX_VERTEX_ATTRIB_BINDINGS."));
-                return false;
-            }
-            return true;
-        }
-
         static bool ValidateVertexBindingIndex(GLuint bindingindex, const char* funcName) {
-            if (bindingindex >= VertexArrayImpl::GetMaxVertexAttribBindings()) {
+            // Bound by the same dynamic limit as attribute indices: the default attribute -> binding
+            // mapping is the identity, so a binding point the backend cannot address as an attribute
+            // would resolve into an attribute the backend must then reject on every draw. Real drivers
+            // likewise report MAX_VERTEX_ATTRIB_BINDINGS == MAX_VERTEX_ATTRIBS.
+            if (bindingindex >= VertexArrayImpl::GetMaxVertexAttribs()) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidValue,
                     MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
@@ -174,9 +140,6 @@ namespace MobileGL::MG_Impl::GLImpl {
             case GL_CURRENT_VERTEX_ATTRIB:
             case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:
             case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
-            // Core since GL 4.1 (ARB_vertex_attrib_64bit). It was rejected while no attribute could
-            // ever be long; now that IsLong is real state the pname has to be accepted.
-            case GL_VERTEX_ATTRIB_ARRAY_LONG:
             case GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
             case GL_VERTEX_ATTRIB_ARRAY_POINTER:
                 return true;
@@ -192,17 +155,6 @@ namespace MobileGL::MG_Impl::GLImpl {
 
     SharedPtr<MG_State::GLState::VertexArrayObject> GetNamedVertexArrayObject_State(GLuint vaobj,
                                                                                    const char* caller) {
-        // Name zero is not a vertex array object in a core profile: it names the default vertex
-        // array, which the by-name (direct state access) entry points never accept. MobileGL keeps a
-        // real object at index 0 for the compatibility paths, so the generic name validation below
-        // would otherwise let it through (GL 4.6 core 10.3.1).
-        if (vaobj == 0) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", caller,
-                                             "Vertex array name 0 is not a vertex array object."));
-            return nullptr;
-        }
         if (!VertexArrayImpl::ValidateVertexArrayName(vaobj)) return nullptr;
         if (!VertexArrayImpl::ValidateVertexArrayObject(vaobj)) return nullptr;
         return MG_State::pGLContext->GetVertexArrayObject(vaobj);
@@ -258,7 +210,7 @@ namespace MobileGL::MG_Impl::GLImpl {
 
         DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
         // Integer path: never normalized, never BGRA/packed (the validator rejects those).
-        if (!VertexArrayImpl::ValidateVertexAttribFormat(index, size, type, dataType, false, stride, true)) return;
+        if (!VertexArrayImpl::ValidateVertexAttribFormat(index, size, dataType, false, stride, true)) return;
 
         auto& vao = MG_State::pGLContext->GetBoundVertexArray();
         if (!vao) {
@@ -275,7 +227,6 @@ namespace MobileGL::MG_Impl::GLImpl {
 
         vao->SetAttributeFormat(index, size, dataType, false, stride, offset, true, false);
         vao->BindAttributeBuffer(index, vbo);
-        vao->MirrorPointerIntoBinding(index, vbo, offset, EffectiveVertexStride(stride, size, type));
     }
 
     void VertexAttribPointer_State(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
@@ -283,7 +234,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
 
         DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
-        if (!VertexArrayImpl::ValidateVertexAttribFormat(index, size, type, dataType, normalized == GL_TRUE, stride, false))
+        if (!VertexArrayImpl::ValidateVertexAttribFormat(index, size, dataType, normalized == GL_TRUE, stride, false))
             return;
 
         auto& vao = MG_State::pGLContext->GetBoundVertexArray();
@@ -305,7 +256,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         const int effectiveSize = isBgra ? 4 : size;
         vao->SetAttributeFormat(index, effectiveSize, dataType, normalized, stride, offset, false, isBgra);
         vao->BindAttributeBuffer(index, vbo);
-        vao->MirrorPointerIntoBinding(index, vbo, offset, EffectiveVertexStride(stride, effectiveSize, type));
     }
 
     void BindVertexArray_State(GLuint array) {
@@ -409,13 +359,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                 MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", caller, "offset and stride must be non-negative."));
             return;
         }
-        if (static_cast<Uint>(stride) > VertexArrayImpl::GetMaxVertexAttribStride()) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", caller,
-                                             "stride exceeds GL_MAX_VERTEX_ATTRIB_STRIDE."));
-            return;
-        }
         auto bufferObject = GetVertexArrayBufferObject_State(buffer, caller);
         if (buffer != 0 && !bufferObject) return;
 
@@ -433,7 +376,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                                         const GLintptr* offsets, const GLsizei* strides) {
         auto vao = GetNamedVertexArrayObject_State(vaobj, "VertexArrayVertexBuffers_State");
         if (!vao) return;
-        if (!ValidateVertexBindingRange(first, count, "VertexArrayVertexBuffers_State")) return;
         for (GLsizei i = 0; i < count; ++i) {
             if (!buffers) {
                 VertexBufferBinding_State(vao, first + i, 0, 0, 16, "VertexArrayVertexBuffers_State");
@@ -447,55 +389,12 @@ namespace MobileGL::MG_Impl::GLImpl {
     static void VertexAttribFormatSeparate_State(const SharedPtr<MG_State::GLState::VertexArrayObject>& vao,
                                                  GLuint attribindex, GLint size, GLenum type, GLboolean normalized,
                                                  GLuint relativeoffset, Bool isInteger, const char* caller) {
-        static_cast<void>(caller);
         if (!VertexArrayImpl::ValidateVertexAttributeIndex(attribindex)) return;
 
         DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
-        // The separate-format entry points take the same size/type rules as the pointer ones,
-        // GL_BGRA included, so they need the full format validation rather than the pointer-only
-        // subset - that one reports GL_BGRA as an out-of-range size.
-        if (!VertexArrayImpl::ValidateVertexAttribFormat(attribindex, size, type, dataType, normalized == GL_TRUE, 0,
-                                                         isInteger))
-            return;
-        if (!VertexArrayImpl::ValidateVertexAttribRelativeOffset(relativeoffset)) return;
+        if (!VertexArrayImpl::ValidateVertexAttribPointerParams(attribindex, size, dataType, 0)) return;
 
-        const Bool isBgra = (size == static_cast<GLint>(GL_BGRA));
-        vao->SetAttributeFormatSeparate(attribindex, isBgra ? 4 : size, dataType, normalized, isInteger,
-                                        relativeoffset, isBgra);
-    }
-
-    // The long (64-bit) attribute format: the values reach the shader as doubles, unconverted
-    // (GL 4.6 core 10.3.2). ValidateVertexAttribLFormat has already pinned type to GL_DOUBLE, so the
-    // recorded DataType is always Float64 - what IsLong adds is that this is the *unconverted* form,
-    // as opposed to VertexAttribFormat(GL_DOUBLE), which asks for a float conversion.
-    //
-    // Whether the backend can feed it is detected, not assumed: DirectVulkan needs shaderFloat64,
-    // and DirectGLES can never have it at all. A backend without it declines here, loudly - GL error
-    // plus a log line naming the reason - rather than accepting state no draw could honour and
-    // rendering garbage. The matching startup POST row is in MG_Util/SelfTest/DriverPost.cpp.
-    static void VertexAttribLFormatSeparate_State(const SharedPtr<MG_State::GLState::VertexArrayObject>& vao,
-                                                  GLuint attribindex, GLint size, GLenum type,
-                                                  GLuint relativeoffset) {
-        if (!VertexArrayImpl::ValidateVertexAttributeIndex(attribindex)) return;
-        if (!VertexArrayImpl::ValidateVertexAttribLFormat(attribindex, size, type)) return;
-        if (!VertexArrayImpl::ValidateVertexAttribRelativeOffset(relativeoffset)) return;
-
-        if (!MG_Backend::pActiveBackendObject ||
-            !MG_Backend::pActiveBackendObject->GetDynamicParameters().SupportsFloat64VertexAttributes) {
-            MGLOG_I("VertexAttribLFormat: attribute %u asked for a 64-bit (GL_DOUBLE) format, but this "
-                    "backend has no double-precision vertex attribute support - see the "
-                    "\"64-bit vertex attributes\" / \"shaderFloat64\" POST row for what that costs",
-                    attribindex);
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribLFormat",
-                                             "64-bit vertex attributes are not supported by this backend."));
-            return;
-        }
-
-        vao->SetAttributeFormatSeparate(attribindex, size, MG_Util::ConvertGLEnumToDataType(type),
-                                        /*normalized: */ false, /*isInteger: */ false, relativeoffset,
-                                        /*isBgra: */ false, /*isLong: */ true);
+        vao->SetAttributeFormatSeparate(attribindex, size, dataType, normalized, isInteger, relativeoffset);
     }
 
     void VertexArrayAttribFormat_State(GLuint vaobj, GLuint attribindex, GLint size, GLenum type,
@@ -938,9 +837,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
             params[0] = attr->IsInteger ? 1.0f : 0.0f;
             return;
-        case GL_VERTEX_ATTRIB_ARRAY_LONG:
-            params[0] = attr->IsLong ? 1.0f : 0.0f;
-            return;
         case GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
             params[0] = static_cast<GLfloat>(attr->Divisor);
             return;
@@ -1001,9 +897,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
             params[0] = attr->IsInteger ? 1.0 : 0.0;
             return;
-        case GL_VERTEX_ATTRIB_ARRAY_LONG:
-            params[0] = attr->IsLong ? 1.0 : 0.0;
-            return;
         case GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
             params[0] = static_cast<GLdouble>(attr->Divisor);
             return;
@@ -1060,9 +953,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
             params[0] = attr->IsInteger ? GL_TRUE : GL_FALSE;
             return;
-        case GL_VERTEX_ATTRIB_ARRAY_LONG:
-            params[0] = attr->IsLong ? GL_TRUE : GL_FALSE;
-            return;
         case GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
             params[0] = static_cast<GLint>(attr->Divisor);
             return;
@@ -1154,82 +1044,6 @@ namespace MobileGL::MG_Impl::GLImpl {
         VertexArrayVertexBuffer_State(vaobj, bindingindex, buffer, offset, stride);
     }
 
-    // glGetVertexArrayiv reports exactly one thing (GL 4.6 core table 23.4): which buffer the
-    // named vertex array takes its indices from. Everything else about a vertex array is
-    // per-attribute and belongs to the indexed queries below.
-    void GetVertexArrayiv(GLuint vaobj, GLenum pname, GLint* param) {
-        auto vao = GetNamedVertexArrayObject_State(vaobj, __func__);
-        if (!vao || !param) return;
-        if (pname != GL_ELEMENT_ARRAY_BUFFER_BINDING) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "pname must be GL_ELEMENT_ARRAY_BUFFER_BINDING."));
-            return;
-        }
-        const auto& indexBuffer = vao->GetIndexBufferBindingSlot().GetBoundObject();
-        *param = indexBuffer ? static_cast<GLint>(indexBuffer->GetExternalIndex()) : 0;
-    }
-
-    void GetVertexArrayIndexediv(GLuint vaobj, GLuint index, GLenum pname, GLint* param) {
-        auto vao = GetNamedVertexArrayObject_State(vaobj, __func__);
-        if (!vao || !param) return;
-        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
-        const auto& attr = vao->GetAttribute(index);
-        switch (pname) {
-        case GL_VERTEX_ATTRIB_ARRAY_ENABLED:
-            *param = attr.Enabled ? GL_TRUE : GL_FALSE;
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_SIZE:
-            *param = static_cast<GLint>(attr.Size);
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_STRIDE:
-            *param = static_cast<GLint>(attr.Stride);
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_TYPE:
-            *param = static_cast<GLint>(MG_Util::ConvertDataTypeToGLEnum(attr.Type));
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:
-            *param = attr.Normalized ? GL_TRUE : GL_FALSE;
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_INTEGER:
-            *param = attr.IsInteger ? GL_TRUE : GL_FALSE;
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_LONG:
-            *param = attr.IsLong ? GL_TRUE : GL_FALSE;
-            return;
-        case GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
-            *param = static_cast<GLint>(attr.Divisor);
-            return;
-        case GL_VERTEX_ATTRIB_RELATIVE_OFFSET:
-            *param = static_cast<GLint>(vao->GetAttributeRelativeOffset(index));
-            return;
-        default:
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
-                                             "pname is not an accepted indexed vertex array query."));
-            return;
-        }
-    }
-
-    // Only GL_VERTEX_BINDING_OFFSET needs 64 bits. Its `index` names a vertex buffer binding
-    // point directly (GL 4.6 core 10.3.1), not an attribute - unlike every pname the 32-bit
-    // indexed query above accepts, which is why this one does not go through an attribute's
-    // binding index.
-    void GetVertexArrayIndexed64iv(GLuint vaobj, GLuint index, GLenum pname, GLint64* param) {
-        auto vao = GetNamedVertexArrayObject_State(vaobj, __func__);
-        if (!vao || !param) return;
-        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
-        if (pname != GL_VERTEX_BINDING_OFFSET) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "pname must be GL_VERTEX_BINDING_OFFSET."));
-            return;
-        }
-        *param = static_cast<GLint64>(vao->GetBindingPoint(index).Offset);
-    }
-
     void VertexArrayAttribFormat(GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLboolean normalized,
                                  GLuint relativeoffset) {
         VertexArrayAttribFormat_State(vaobj, attribindex, size, type, normalized, relativeoffset);
@@ -1262,7 +1076,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                            const GLsizei* strides) {
         auto vao = GetBoundVertexArrayOrError("BindVertexBuffers");
         if (!vao) return;
-        if (!ValidateVertexBindingRange(first, count, "BindVertexBuffers")) return;
         for (GLsizei i = 0; i < count; ++i) {
             if (!buffers) {
                 VertexBufferBinding_State(vao, first + i, 0, 0, 16, "BindVertexBuffers");
@@ -1287,18 +1100,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                                          "VertexAttribIFormat");
     }
 
-    void VertexAttribLFormat(GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) {
-        auto vao = GetBoundVertexArrayOrError("VertexAttribLFormat");
-        if (!vao) return;
-        VertexAttribLFormatSeparate_State(vao, attribindex, size, type, relativeoffset);
-    }
-
-    void VertexArrayAttribLFormat(GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset) {
-        auto vao = GetNamedVertexArrayObject_State(vaobj, "VertexArrayAttribLFormat");
-        if (!vao) return;
-        VertexAttribLFormatSeparate_State(vao, attribindex, size, type, relativeoffset);
-    }
-
     void VertexAttribBinding(GLuint attribindex, GLuint bindingindex) {
         auto vao = GetBoundVertexArrayOrError("VertexAttribBinding");
         if (!vao) return;

MobileGL/MG_Impl/GLImpl/VertexArray/GL_VertexArray.h

@@ -92,13 +92,9 @@ namespace MobileGL::MG_Impl::GLImpl {
     void EnableVertexArrayAttrib(GLuint vaobj, GLuint index);
     void VertexArrayElementBuffer(GLuint vaobj, GLuint buffer);
     void VertexArrayVertexBuffer(GLuint vaobj, GLuint bindingindex, GLuint buffer, GLintptr offset, GLsizei stride);
-    void GetVertexArrayiv(GLuint vaobj, GLenum pname, GLint* param);
-    void GetVertexArrayIndexediv(GLuint vaobj, GLuint index, GLenum pname, GLint* param);
-    void GetVertexArrayIndexed64iv(GLuint vaobj, GLuint index, GLenum pname, GLint64* param);
     void VertexArrayAttribFormat(GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLboolean normalized,
                                  GLuint relativeoffset);
     void VertexArrayAttribIFormat(GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset);
-    void VertexArrayAttribLFormat(GLuint vaobj, GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset);
     void VertexArrayAttribBinding(GLuint vaobj, GLuint attribindex, GLuint bindingindex);
     void VertexArrayBindingDivisor(GLuint vaobj, GLuint bindingindex, GLuint divisor);
     void VertexArrayVertexBuffers(GLuint vaobj, GLuint first, GLsizei count, const GLuint* buffers,
@@ -108,7 +104,6 @@ namespace MobileGL::MG_Impl::GLImpl {
                            const GLsizei* strides);
     void VertexAttribFormat(GLuint attribindex, GLint size, GLenum type, GLboolean normalized, GLuint relativeoffset);
     void VertexAttribIFormat(GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset);
-    void VertexAttribLFormat(GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset);
     void VertexAttribBinding(GLuint attribindex, GLuint bindingindex);
     void VertexBindingDivisor(GLuint bindingindex, GLuint divisor);
     void VertexAttribDivisor(GLuint index, GLuint divisor);

MobileGL/MG_Impl/GLImpl/VertexArray/Validators.cpp

@@ -23,18 +23,6 @@ namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
         return std::min(static_cast<Uint>(backendLimit), capacity);
     }
 
-    Uint GetMaxVertexAttribBindings() {
-        return GetMaxVertexAttribs();
-    }
-
-    Uint GetMaxVertexAttribRelativeOffset() {
-        return 2047;
-    }
-
-    Uint GetMaxVertexAttribStride() {
-        return 2048;
-    }
-
     Bool ValidateVertexArrayName(Uint index) {
         Bool isValid = MG_State::pGLContext->ValidateVertexArrayName(index);
         if (!isValid) {
@@ -102,31 +90,9 @@ namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
         return true;
     }
 
-    Bool ValidateVertexAttribFormat(Uint index, GLint sizeRaw, GLenum glType, DataType type, Bool normalized,
-                                    Int stride, Bool integerPath) {
+    Bool ValidateVertexAttribFormat(Uint index, GLint sizeRaw, DataType type, Bool normalized, Int stride,
+                                    Bool integerPath) {
         constexpr const char* fn = "ValidateVertexAttribFormat";
-        // GL_UNSIGNED_INT_10F_11F_11F_REV is a three-component float-path-only packing that has no
-        // DataType of its own, so it has to be recognised by name before the conversion below turns
-        // it into Unknown and reports the wrong error (GL 4.6 core 10.3.2).
-        if (glType == GL_UNSIGNED_INT_10F_11F_11F_REV) {
-            if (integerPath) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", fn,
-                        std::format("GL_UNSIGNED_INT_10F_11F_11F_REV is not an integer-path type (attribute {}).",
-                                    index)));
-                return false;
-            }
-            if (sizeRaw != 3) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeUnique<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", fn,
-                        std::format("GL_UNSIGNED_INT_10F_11F_11F_REV requires size 3 (attribute {}).", index)));
-                return false;
-            }
-        }
         if (type == DataType::Unknown) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidEnum,
@@ -204,40 +170,4 @@ namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
         }
         return true;
     }
-
-    Bool ValidateVertexAttribLFormat(Uint index, GLint size, GLenum type) {
-        constexpr const char* fn = "ValidateVertexAttribLFormat";
-        if (size < 1 || size > 4) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl", fn,
-                    std::format("Invalid size {} for attribute {}. Must be 1-4.", size, index)));
-            return false;
-        }
-        // GL 4.6 core 10.3.2: the long form takes GL_DOUBLE and nothing else.
-        if (type != GL_DOUBLE) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidEnum,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl", fn,
-                    std::format("Type 0x{:X} is not GL_DOUBLE (attribute {}).", type, index)));
-            return false;
-        }
-        return true;
-    }
-
-    Bool ValidateVertexAttribRelativeOffset(Uint relativeOffset) {
-        const Uint limit = GetMaxVertexAttribRelativeOffset();
-        if (relativeOffset > limit) {
-            MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue,
-                MakeUnique<GenericErrorInfo>(
-                    "MG_Impl/GLImpl", "ValidateVertexAttribRelativeOffset",
-                    std::format("relativeoffset {} exceeds GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET ({}).", relativeOffset,
-                                limit)));
-            return false;
-        }
-        return true;
-    }
 } // namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl

MobileGL/MG_Impl/GLImpl/VertexArray/Validators.h

@@ -15,20 +15,6 @@ namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
     // capacity). Falls back to the capacity when no backend is active (unit tests).
     Uint GetMaxVertexAttribs();
 
-    // GL_MAX_VERTEX_ATTRIB_BINDINGS. The default attribute -> binding mapping is the identity, so a
-    // binding point that cannot also be an attribute index would resolve into an attribute the
-    // backend has to reject on every draw; real drivers report the two limits equal as well.
-    Uint GetMaxVertexAttribBindings();
-
-    // GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET. The relative offset is folded into the resolved
-    // attribute offset in the frontend and never reaches a backend limit, so this is the value the
-    // spec requires an implementation to support at minimum (GL 4.6 core table 23.63).
-    Uint GetMaxVertexAttribRelativeOffset();
-
-    // GL_MAX_VERTEX_ATTRIB_STRIDE. Like the relative offset above, the stride never reaches a
-    // backend limit of its own, so this is the spec minimum (GL 4.6 core table 23.63).
-    Uint GetMaxVertexAttribStride();
-
     Bool ValidateVertexArrayName(Uint index);
     Bool ValidateVertexArrayObject(Uint index);
     Bool ValidateVertexAttributeIndex(Uint index);
@@ -36,13 +22,6 @@ namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
     // Full glVertexAttribPointer / glVertexAttribIPointer format validation, including the packed
     // 2_10_10_10 types and GL_BGRA size. sizeRaw is the untranslated GL size (possibly GL_BGRA);
     // integerPath selects the glVertexAttribIPointer rules.
-    Bool ValidateVertexAttribFormat(Uint index, GLint sizeRaw, GLenum glType, DataType type, Bool normalized,
-                                    Int stride, Bool integerPath);
-    // glVertexAttribLFormat / glVertexArrayAttribLFormat: the only accepted type is GL_DOUBLE and
-    // the size range is 1-4 (GL_BGRA is a float-path size). Separate from the function above
-    // because the long path shares none of its type or size rules.
-    Bool ValidateVertexAttribLFormat(Uint index, GLint size, GLenum type);
-    // Shared by every *Format entry point: INVALID_VALUE once relativeoffset leaves the range the
-    // implementation advertises.
-    Bool ValidateVertexAttribRelativeOffset(Uint relativeOffset);
+    Bool ValidateVertexAttribFormat(Uint index, GLint sizeRaw, DataType type, Bool normalized, Int stride,
+                                    Bool integerPath);
 } // namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl

MobileGL/MG_Impl/GetProcAddress.cpp

@@ -85,8 +85,6 @@ namespace MobileGL::MG_Impl {
         GETPROC(CGLGetPixelFormat, name);
         GETPROC(CGLSetCurrentContext, name);
         GETPROC(CGLGetCurrentContext, name);
-        GETPROC(CGLSetVirtualScreen, name);
-        GETPROC(CGLGetVirtualScreen, name);
         GETPROC(CGLSetParameter, name);
         GETPROC(CGLGetParameter, name);
         GETPROC(CGLUpdateContext, name);

MobileGL/MG_Impl/NSOpenGLImpl/NSOpenGLImpl.cpp

@@ -29,19 +29,10 @@ namespace MobileGL::MG_Impl::NSOpenGLImpl {
         char kContextViewKey;
         char kContextLayerKey;
 
+        std::once_flag g_installOnce;
         IMP g_pixelFormatDealloc = nullptr;
         IMP g_contextDealloc = nullptr;
 
-        std::mutex& HookInstallMutex() {
-            static auto* mutex = new std::mutex();
-            return *mutex;
-        }
-
-        Bool& HooksInstalled() {
-            static auto* installed = new Bool(false);
-            return *installed;
-        }
-
         template <typename Fn>
         Fn ObjcMsgSend() {
             return reinterpret_cast<Fn>(objc_msgSend);
@@ -440,12 +431,12 @@ namespace MobileGL::MG_Impl::NSOpenGLImpl {
             method_setImplementation(method, replacement);
         }
 
-        Bool InstallHooksOnce() {
+        void InstallHooksOnce() {
             Class pixelFormatClass = objc_getClass("NSOpenGLPixelFormat");
             Class contextClass = objc_getClass("NSOpenGLContext");
             if (!pixelFormatClass || !contextClass) {
                 MGLOG_W("NSOpenGLImpl: NSOpenGL classes are not loaded; hooks not installed");
-                return false;
+                return;
             }
 
             ReplaceInstanceMethod(pixelFormatClass, "initWithAttributes:",
@@ -480,34 +471,11 @@ namespace MobileGL::MG_Impl::NSOpenGLImpl {
             ReplaceInstanceMethod(contextClass, "dealloc", reinterpret_cast<IMP>(ContextDealloc), &g_contextDealloc);
 
             MGLOG_I("NSOpenGLImpl hooks installed");
-            return true;
         }
     } // namespace
 
     void InstallHooks() {
-        const std::lock_guard<std::mutex> lock(HookInstallMutex());
-        if (!HooksInstalled()) {
-            // Do not permanently consume the install attempt when the OpenGL
-            // framework has not registered its Objective-C classes yet. The
-            // dyld bootstrap normally runs after framework dependencies, but
-            // an explicitly loaded/static-linked MobileGL can arrive earlier.
-            HooksInstalled() = InstallHooksOnce();
-        }
+        std::call_once(g_installOnce, InstallHooksOnce);
     }
 } // namespace MobileGL::MG_Impl::NSOpenGLImpl
-
-namespace {
-    // SDL's Cocoa backend creates NSOpenGLPixelFormat/NSOpenGLContext before
-    // its first dlsym("glGetString") or other MobileGL host-API call. Install
-    // only the lightweight Objective-C dispatch hooks while the injected dylib
-    // is loading so those first Cocoa objects are routed through CGLImpl. The
-    // hooked context constructor reaches EGLImpl::GetDisplay(), which performs
-    // the full, thread-safe MobileGL initialization outside this bootstrap.
-    //
-    // There is intentionally no matching destructor: backend teardown remains
-    // owned by the EGL lifecycle and process-exit globals remain leak-at-exit.
-    __attribute__((constructor)) void BootstrapNSOpenGLHooks() {
-        MobileGL::MG_Impl::NSOpenGLImpl::InstallHooks();
-    }
-} // namespace
 #endif

MobileGL/MG_State/GLState/BufferState/BufferObject.cpp

@@ -174,21 +174,6 @@ namespace MobileGL::MG_State::GLState {
         ++m_changeSerial;
     }
 
-    void BufferObject::MarkGpuWritten() {
-        m_gpuWritePending = true;
-    }
-
-    void BufferObject::SyncGpuWrites() {
-        if (!m_gpuWritePending) return;
-        // Cleared unconditionally: without a readback op the shadow can never catch up,
-        // and retrying on every subsequent read would only repeat the same no-op.
-        m_gpuWritePending = false;
-        if (m_size == 0 || g_bufferBackendOps == nullptr || g_bufferBackendOps->ReadbackFromGpu == nullptr) {
-            return;
-        }
-        g_bufferBackendOps->ReadbackFromGpu(*this);
-    }
-
     void BufferObject::UploadSubData(DataPtr data, SizeT atOffset) {
         MOBILEGL_ASSERT(!m_isMapped || (m_mappingAccess & BufferMappingAccessBit::Persistent),
                         "Cannot upload sub data while buffer is non-persistently mapped.");
@@ -219,13 +204,11 @@ namespace MobileGL::MG_State::GLState {
                         "Destination buffer copy out of bounds: dstOffset (%zu) + size (%zu) > m_size (%zu)", dstOffset,
                         size, m_size);
 
-        src->SyncGpuWrites();
         Memcpy(m_resource.Bytes() + dstOffset, src->m_resource.Bytes() + srcOffset, size);
         NotifyContentWrite(dstOffset, size);
     }
 
     void* BufferObject::AcquireMemory(Bool markMapped, Bool read, Bool write) {
-        SyncGpuWrites();
         if (markMapped) {
             m_isMapped = true;
             m_mappingAccess = (read ? BufferMappingAccessBit::Read : BufferMappingAccessBit::Null) |
@@ -248,29 +231,10 @@ namespace MobileGL::MG_State::GLState {
         return m_resource.Bytes();
     }
 
-    Bool BufferObject::EnsureGpuResidentStorage() {
-        if (m_resource.IsGpuResident()) {
-            return true;
-        }
-        if (m_size == 0 || g_bufferBackendOps == nullptr || g_bufferBackendOps->AcquirePersistentMap == nullptr) {
-            return false;
-        }
-        void* base = g_bufferBackendOps->AcquirePersistentMap(*this);
-        if (base == nullptr) {
-            return false;
-        }
-        m_resource.AdoptPersistentMap(base);
-        return true;
-    }
-
     void* BufferObject::AcquireMemoryRange(Range1D range, Flags<BufferMappingAccessBit> access) {
         MOBILEGL_ASSERT(range.end <= m_size && range.start <= range.end,
                         "AcquireMemoryRange out of bounds: range (%zu, %zu) exceeds m_size (%zu)", range.start,
                         range.end, m_size);
-        // The app is about to look at the bytes; a shader may have rewritten them since
-        // the shadow was last authoritative. Also needed for a write map without an
-        // invalidate bit, whose staging copy is seeded from the shadow.
-        SyncGpuWrites();
         m_isMapped = true;
         m_mappingAccess = access;
         m_mappedRange = range;

MobileGL/MG_State/GLState/BufferState/BufferObject.h

@@ -99,13 +99,6 @@ namespace MobileGL {
             // Must be idempotent: a second call for an already-backed buffer returns the
             // same base pointer.
             void* (*AcquirePersistentMap)(BufferObject& bufferObject) = nullptr;
-            // Pulls the backend's current contents for the whole buffer into the shadow
-            // (through WritebackFromBackend). Only ever called for a buffer the GPU may
-            // have written behind the frontend's back - a shader storage or atomic counter
-            // binding of a draw or dispatch - because nothing else can desynchronise the
-            // shadow. Backends that cannot read their storage back leave this null; the
-            // shadow then keeps its pre-dispatch bytes, which is the old behaviour.
-            void (*ReadbackFromGpu)(BufferObject& bufferObject) = nullptr;
         };
 
         // Registered by the active backend at init, cleared at shutdown.
@@ -140,11 +133,6 @@ namespace MobileGL {
 
             void* AcquireMemory(Bool markMapped, Bool read, Bool write);
             void* AcquireMemoryRange(Range1D range, Flags<BufferMappingAccessBit> access);
-            // Adopt backend host-visible coherent GPU storage as the source of truth
-            // (used for GPU-written targets like transform feedback capture, so
-            // MapBuffer/GetBufferSubData read real GPU results). No-op when already
-            // resident or when the backend declines.
-            Bool EnsureGpuResidentStorage();
             void ReleaseMemory();
             void FlushMemoryRange(SizeT offset, SizeT length);
 
@@ -156,16 +144,6 @@ namespace MobileGL {
             // backend op: the backend storage already holds these bytes.
             void WritebackFromBackend(DataPtr data, SizeT atOffset);
 
-            // A draw or dispatch just ran with this buffer bound where a shader can write
-            // it (shader storage / atomic counter). The next read has to reconcile with
-            // that: pull the bytes back, or - when the shadow already IS coherent GPU
-            // memory - wait for the work that wrote them to retire. Which of the two is
-            // the backend's business; the flag only says a GPU write is outstanding.
-            void MarkGpuWritten();
-            // Refreshes the shadow from the backend when a GPU write is outstanding. Called
-            // from every path that reads the shadow on the app's behalf.
-            void SyncGpuWrites();
-
             Bool IsMapped() const;
             Bool IsImmutableStorage() const;
             SizeT GetSize() const;
@@ -213,8 +191,6 @@ namespace MobileGL {
             Bool m_isImmutableStorage = false;
             GLbitfield m_storageFlags = 0;
             Uint64 m_changeSerial = 0;
-            // Set by MarkGpuWritten, cleared by SyncGpuWrites once the shadow is refreshed.
-            Bool m_gpuWritePending = false;
             Range1D m_mappedRange;
             Vector<Uint8> m_stagingData;
             Bool m_ownsStagingData;

MobileGL/MG_State/GLState/BufferState/BufferState.h

@@ -31,9 +31,6 @@ namespace MobileGL::MG_State::GLState {
         BindingSlot<BufferObject>& GetBindingSlot(BufferTarget target);
         // For glBindBufferBase / glBindBufferRange
         BindingSlotRange1D<BufferObject>& GetBindingPoint(BufferTarget target, Uint index);
-        const BindingSlotRange1D<BufferObject>& GetBindingPoint(BufferTarget target, Uint index) const {
-            return const_cast<BufferState*>(this)->GetBindingPoint(target, index);
-        }
         constexpr SizeT GetBindingPointCount(const BufferTarget target) const {
             auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
             auto index = std::distance(BufferBindPointTargets.begin(), it);

MobileGL/MG_State/GLState/Core.cpp

@@ -241,32 +241,6 @@ namespace MobileGL::MG_State {
         }
 
         void GLContext::MarkTextureObjectForDeletion(Uint index) {
-            // GL 3.3 core 4.4.2: deleting a texture whose image is attached to the framebuffer
-            // that is currently bound acts as if FramebufferTexture* had been called with texture
-            // zero for every attachment point it occupied there. Framebuffers that are NOT bound
-            // keep the orphaned attachment, so only the bound ones are touched.
-            //
-            // Without this the framebuffer object goes on holding the deleted texture alive as its
-            // attachment, and a later read through that framebuffer returns the dead texture's
-            // contents rather than those of whatever the application put in its place - the name
-            // it deleted usually comes straight back from the next glGenTextures, so the two are
-            // indistinguishable from the outside (KHR-GL32.packed_pixels read a stale gradient).
-            if (const auto& textureObject = m_textureState.GetTextureObject(index)) {
-                for (SizeT targetIndex = 0; targetIndex < SizeT(FramebufferTarget::FramebufferTargetCount);
-                     ++targetIndex) {
-                    const auto& framebuffer =
-                        GetFramebufferBindingSlot(static_cast<FramebufferTarget>(targetIndex)).GetBoundObject();
-                    if (!framebuffer || framebuffer->IsDefaultFramebuffer()) {
-                        continue;
-                    }
-                    const auto& attachments = framebuffer->GetAllAttachmentObjects();
-                    for (SizeT i = 0; i < attachments.size(); ++i) {
-                        if (attachments[i].IsTexture() && attachments[i].GetTexture() == textureObject) {
-                            framebuffer->Detach(static_cast<FramebufferAttachmentType>(i));
-                        }
-                    }
-                }
-            }
             m_textureState.MarkTextureObjectForDeletion(index, IsRelaxedSemanticsActive());
         }
 
@@ -343,60 +317,7 @@ namespace MobileGL::MG_State {
             return m_programState.GetCurrentProgram();
         }
 
-        const SharedPtr<ProgramObject>& GLContext::GetProgramForDraw() {
-            static const SharedPtr<ProgramObject> nullProgram = nullptr;
-            const auto& currentProgram = m_programState.GetCurrentProgram();
-            if (currentProgram) return currentProgram;
-            if (m_boundProgramPipeline == 0) return nullProgram;
-            const auto& pipeline = GetBoundProgramPipeline();
-            if (!pipeline) return nullProgram;
-
-            const auto signature = pipeline->ComputeDrawProgramSignature();
-            if (const auto& cached = pipeline->GetCachedDrawProgram(signature)) return cached;
-
-            // Everything downstream of here - the backends, the uniform plumbing, the draw
-            // validation - is written against a single linked program, so the pipeline is
-            // flattened into one. Each stage contributes only the shaders that serve it, so a
-            // program bound to two stages is not pulled in twice and a program bound to a
-            // stage it does not implement contributes nothing.
-            // Deliberately not a named program: it is reachable only through the pipeline, it
-            // must not answer glIsProgram, and it must not consume a name the application
-            // could otherwise be handed. Backend registries key on the object, not the name.
-            auto composite = MakeShared<ProgramObject>(0u);
-
-            Bool anyStage = false;
-            for (SizeT stage = 0; stage < static_cast<SizeT>(ShaderStage::ShaderStageCount); ++stage) {
-                const auto& stageProgram = pipeline->GetStageProgram(static_cast<ShaderStage>(stage));
-                if (!stageProgram) continue;
-                for (const auto& shader : stageProgram->GetAttachedShaders()) {
-                    if (!shader || static_cast<SizeT>(shader->GetShaderStage()) != stage) continue;
-                    composite->AttachShader(shader);
-                    anyStage = true;
-                }
-            }
-            if (!anyStage) return nullProgram;
-            // A pipeline with no fragment stage still rasterises, so the default fragment
-            // shader is wanted here even though the separable stage programs never get one.
-            composite->Link(true);
-            pipeline->SetCachedDrawProgram(signature, Move(composite));
-            return pipeline->GetCachedDrawProgram(signature);
-        }
-
-        const SharedPtr<ProgramObject>& GLContext::GetProgramForUniform() {
-            const auto& currentProgram = m_programState.GetCurrentProgram();
-            if (currentProgram) return currentProgram;
-            static const SharedPtr<ProgramObject> nullProgram = nullptr;
-            if (m_boundProgramPipeline == 0) return nullProgram;
-            const auto& pipeline = GetBoundProgramPipeline();
-            if (!pipeline) return nullProgram;
-            return pipeline->GetActiveProgram();
-        }
-
         // RenderState
-        Uint GLContext::GetPipelineStateVersion() const {
-            return m_renderState.GetPipelineStateVersion();
-        }
-
         Uint GLContext::GetRenderStateParametersVersion() const {
             return m_renderState.GetVersion();
         }
@@ -477,14 +398,6 @@ namespace MobileGL::MG_State {
             m_renderState.SetPointSize(size);
         }
 
-        void GLContext::SetPatchVertices(Uint vertices) {
-            m_renderState.SetPatchVertices(vertices);
-        }
-
-        Uint GLContext::GetPatchVertices() const {
-            return m_renderState.GetPatchVertices();
-        }
-
         Float GLContext::GetPointSize() const {
             return m_renderState.GetPointSize();
         }
@@ -806,200 +719,6 @@ namespace MobileGL::MG_State {
         Bool GLContext::ValidateRenderbufferObject(Uint index) const {
             return m_renderbufferState.ValidateRenderbufferObject(index);
         }
-
-        void GLContext::SaveBoundTransformFeedbackState() {
-            auto& object = m_transformFeedbackObjects[m_boundTransformFeedback];
-            for (Uint i = 0; i < MAX_TRANSFORM_FEEDBACK_BUFFERS; ++i) {
-                const auto& point = m_bufferState.GetBindingPoint(BufferTarget::TransformFeedback, i);
-                object.bindings[i] = {point.GetBoundObject(), point.GetRange(), point.HasExplicitRange()};
-            }
-            object.active = m_transformFeedbackActive;
-            object.paused = m_transformFeedbackPaused;
-            object.primitiveMode = m_transformFeedbackPrimitiveMode;
-            object.program = m_transformFeedbackProgram;
-            object.generation = m_transformFeedbackGeneration;
-            object.capturedVertices = m_transformFeedbackCapturedVertices;
-            object.inputPrimitives = m_transformFeedbackInputPrimitives;
-        }
-
-        void GLContext::RestoreBoundTransformFeedbackState() {
-            const auto& object = m_transformFeedbackObjects[m_boundTransformFeedback];
-            for (Uint i = 0; i < MAX_TRANSFORM_FEEDBACK_BUFFERS; ++i) {
-                auto& point = m_bufferState.GetBindingPoint(BufferTarget::TransformFeedback, i);
-                point.Bind(object.bindings[i].buffer);
-                if (object.bindings[i].buffer) {
-                    point.SetRange(object.bindings[i].range, object.bindings[i].hasExplicitRange);
-                } else {
-                    point.ClearRange();
-                }
-            }
-            m_transformFeedbackActive = object.active;
-            m_transformFeedbackPaused = object.paused;
-            m_transformFeedbackPrimitiveMode = object.primitiveMode;
-            m_transformFeedbackProgram = object.program;
-            // The generation identifies one capture span, and a span belongs to the object
-            // that opened it - a backend keys its append state on it, so switching objects
-            // has to bring the right one back.
-            m_transformFeedbackGeneration = object.generation;
-            m_transformFeedbackCapturedVertices = object.capturedVertices;
-            m_transformFeedbackInputPrimitives = object.inputPrimitives;
-        }
-
-        void GLContext::GenTransformFeedbackNames(Uint number, Vector<Uint>& ids) {
-            ids.resize(number);
-            if (number == 0) return;
-            m_transformFeedbackNames.Generate(number, ids.data());
-            // A generated name already denotes an object with the default state, so that a
-            // bind never has to distinguish "first use" from any later one.
-            for (const Uint id : ids) {
-                m_transformFeedbackObjects[id] = {};
-            }
-        }
-        // Program pipeline
-        void GLContext::GenProgramPipelineNames(Uint number, Vector<Uint>& pipelines) {
-            pipelines.resize(number);
-            // Names only: glIsProgramPipeline must answer GL_FALSE until one is bound or created.
-            m_programPipelineNames.Generate(number, pipelines.data());
-        }
-
-        void GLContext::CreateProgramPipelineObject(Uint index) {
-            m_programPipelines[index] = MakeShared<ProgramPipelineObject>(index);
-        }
-
-        Bool GLContext::ValidateProgramPipelineName(Uint index) const {
-            return index == 0 || m_programPipelineNames.IsValid(index);
-        }
-
-        Bool GLContext::IsProgramPipelineObject(Uint index) const {
-            if (index == 0 || !m_programPipelineNames.IsValid(index)) return false;
-            return m_programPipelines.find(index) != m_programPipelines.end();
-        }
-
-        void GLContext::BindProgramPipelineObject(Uint index) {
-            if (index != 0 && m_programPipelines.find(index) == m_programPipelines.end()) {
-                // First bind is what turns a reserved name into an object.
-                m_programPipelines[index] = MakeShared<ProgramPipelineObject>(index);
-            }
-            m_boundProgramPipeline = index;
-        }
-
-        void GLContext::MarkProgramPipelineForDeletion(Uint index) {
-            if (index == 0 || !m_programPipelineNames.IsValid(index)) return;
-            if (index == m_boundProgramPipeline) {
-                m_boundProgramPipeline = 0;
-            }
-            m_programPipelines.erase(index);
-            m_programPipelineNames.Delete(index);
-        }
-
-        const SharedPtr<ProgramPipelineObject>& GLContext::GetProgramPipelineObject(Uint index) const {
-            static const SharedPtr<ProgramPipelineObject> kNone;
-            const auto it = m_programPipelines.find(index);
-            return it == m_programPipelines.end() ? kNone : it->second;
-        }
-
-        const SharedPtr<ProgramPipelineObject>& GLContext::GetBoundProgramPipeline() const {
-            return GetProgramPipelineObject(m_boundProgramPipeline);
-        }
-
-
-        Bool GLContext::ValidateTransformFeedbackName(Uint index) const {
-            return index == 0 || m_transformFeedbackNames.IsValid(index);
-        }
-
-        void GLContext::BindTransformFeedbackObject(Uint index) {
-            if (index == m_boundTransformFeedback) return;
-            SaveBoundTransformFeedbackState();
-            m_boundTransformFeedback = index;
-            m_transformFeedbackObjects[index].everBound = true;
-            RestoreBoundTransformFeedbackState();
-        }
-
-        Bool GLContext::IsTransformFeedbackObject(Uint index) const {
-            if (index == 0 || !m_transformFeedbackNames.IsValid(index)) return false;
-            const auto it = m_transformFeedbackObjects.find(index);
-            return it != m_transformFeedbackObjects.end() && it->second.everBound;
-        }
-
-        void GLContext::MarkTransformFeedbackObjectForDeletion(Uint index) {
-            if (index == 0 || !m_transformFeedbackNames.IsValid(index)) return;
-            // Deleting the bound object reverts to the default one (GL 4.6 core 13.2.1);
-            // its state is dropped rather than saved back into the dying object.
-            if (index == m_boundTransformFeedback) {
-                m_boundTransformFeedback = 0;
-                RestoreBoundTransformFeedbackState();
-            }
-            m_transformFeedbackObjects.erase(index);
-            m_transformFeedbackNames.Delete(index);
-        }
-
-        Uint64 GLContext::GetTransformFeedbackRecordedVertices(Uint index) const {
-            const auto it = m_transformFeedbackObjects.find(index);
-            return it == m_transformFeedbackObjects.end() ? 0 : it->second.recordedVertices;
-        }
-
-        Bool GLContext::HasTransformFeedbackCompletedSpan(Uint index) const {
-            const auto it = m_transformFeedbackObjects.find(index);
-            return it != m_transformFeedbackObjects.end() && it->second.hasCompletedSpan;
-        }
-
-        void GLContext::CreateTransformFeedbackObject(Uint index) {
-            // glCreateTransformFeedbacks has no bind step to infer existence from, so the name it
-            // hands out is already the name of an object (GL 4.6 core 13.2.1).
-            m_transformFeedbackObjects[index] = {};
-            m_transformFeedbackObjects[index].everBound = true;
-        }
-
-        Bool GLContext::IsNamedTransformFeedbackActive(Uint index) const {
-            if (index == m_boundTransformFeedback) return m_transformFeedbackActive;
-            const auto it = m_transformFeedbackObjects.find(index);
-            return it != m_transformFeedbackObjects.end() && it->second.active;
-        }
-
-        Bool GLContext::IsNamedTransformFeedbackPaused(Uint index) const {
-            if (index == m_boundTransformFeedback) return m_transformFeedbackPaused;
-            const auto it = m_transformFeedbackObjects.find(index);
-            return it != m_transformFeedbackObjects.end() && it->second.paused;
-        }
-
-        NamedTransformFeedbackBinding GLContext::GetNamedTransformFeedbackBinding(Uint index, Uint bufferIndex) const {
-            NamedTransformFeedbackBinding result;
-            if (bufferIndex >= MAX_TRANSFORM_FEEDBACK_BUFFERS) return result;
-            // The bound object's capture bindings live in the context's own binding points, not in
-            // the saved copy - that one is only written when the object is swapped out.
-            if (index == m_boundTransformFeedback) {
-                const auto& point = m_bufferState.GetBindingPoint(BufferTarget::TransformFeedback, bufferIndex);
-                result.Buffer = point.GetBoundObject();
-                result.Range = point.GetRange();
-                result.HasExplicitRange = point.HasExplicitRange();
-                return result;
-            }
-            const auto it = m_transformFeedbackObjects.find(index);
-            if (it == m_transformFeedbackObjects.end()) return result;
-            const auto& saved = it->second.bindings[bufferIndex];
-            result.Buffer = saved.buffer;
-            result.Range = saved.range;
-            result.HasExplicitRange = saved.hasExplicitRange;
-            return result;
-        }
-
-        void GLContext::SetNamedTransformFeedbackBinding(Uint index, Uint bufferIndex,
-                                                         const SharedPtr<BufferObject>& buffer, Range1D range,
-                                                         Bool hasExplicitRange) {
-            if (bufferIndex >= MAX_TRANSFORM_FEEDBACK_BUFFERS) return;
-            if (index == m_boundTransformFeedback) {
-                auto& point = m_bufferState.GetBindingPoint(BufferTarget::TransformFeedback, bufferIndex);
-                point.Bind(buffer);
-                if (buffer && hasExplicitRange) {
-                    point.SetRange(range, true);
-                } else {
-                    point.ClearRange();
-                }
-                return;
-            }
-            auto& object = m_transformFeedbackObjects[index];
-            object.bindings[bufferIndex] = {buffer, range, hasExplicitRange};
-        }
     } // namespace GLState
 
     // Leak-at-exit storage; see GlobalObjects.cpp.

MobileGL/MG_State/GLState/Core.h

@@ -14,7 +14,6 @@
 #include "MG_State/GLState/RenderbufferState/RenderbufferState.h"
 #include "RenderState/RenderState.h"
 #include "ProgramState/ProgramState.h"
-#include "ProgramState/ProgramPipelineObject.h"
 #include "SamplerState/SamplerState.h"
 #include "TextureState/TextureState.h"
 #include "FramebufferState/FramebufferState.h"
@@ -46,14 +45,6 @@ namespace MobileGL {
             // translates the result into its own API call.
             VertexAttribTypeInfo ClassifyVertexAttribType(GLenum glType);
 
-            // One indexed capture binding of a transform feedback object, as the by-name queries
-            // report it. An empty Buffer means the binding point is unbound.
-            struct NamedTransformFeedbackBinding {
-                SharedPtr<BufferObject> Buffer;
-                Range1D Range{};
-                Bool HasExplicitRange = false;
-            };
-
             class GLContext {
             public:
                 GLContext() = default;
@@ -137,30 +128,9 @@ namespace MobileGL {
                 const SharedPtr<ShaderObject>& GetShaderObject(Uint index);
                 void UseProgram(Uint program);
                 const SharedPtr<ProgramObject>& GetCurrentProgram();
-                // What a draw or dispatch actually executes: the program in use, or - when
-                // there is none - the bound pipeline's stages composited into one program.
-                const SharedPtr<ProgramObject>& GetProgramForDraw();
-                // What glUniform* addresses: the program in use, or the bound pipeline's
-                // active program (GL 4.6 core 7.6.1).
-                const SharedPtr<ProgramObject>& GetProgramForUniform();
-
-                // Program pipeline (GL_ARB_separate_shader_objects, GL 4.6 core 7.4). Like queries
-                // and transform feedbacks, glGenProgramPipelines only RESERVES a name - the object
-                // appears on first bind - while glCreateProgramPipelines makes it immediately.
-                void GenProgramPipelineNames(Uint number, Vector<Uint>& pipelines);
-                void CreateProgramPipelineObject(Uint index);
-                Bool ValidateProgramPipelineName(Uint index) const;
-                Bool IsProgramPipelineObject(Uint index) const;
-                void BindProgramPipelineObject(Uint index);
-                void MarkProgramPipelineForDeletion(Uint index);
-                const SharedPtr<ProgramPipelineObject>& GetProgramPipelineObject(Uint index) const;
-                Uint GetBoundProgramPipelineName() const { return m_boundProgramPipeline; }
-                const SharedPtr<ProgramPipelineObject>& GetBoundProgramPipeline() const;
 
                 // RenderState
                 Uint GetRenderStateParametersVersion() const;
-                // Only the pipeline-relevant subset - see RenderState::m_pipelineStateVersion.
-                Uint GetPipelineStateVersion() const;
                 const RenderStateParameters& GetRenderStateParameters() const;
                 void SetViewport(IntVec4 viewport); // x, y, width, height
                 const IntVec4& GetViewport() const; // x, y, width, height
@@ -168,8 +138,6 @@ namespace MobileGL {
                 Float GetLineWidth() const;
                 void SetPointSize(Float size);
                 Float GetPointSize() const;
-                void SetPatchVertices(Uint vertices);
-                Uint GetPatchVertices() const;
                 void SetPolygonOffset(Float factor, Float units);
                 Float GetPolygonOffsetFactor() const;
                 Float GetPolygonOffsetUnits() const;
@@ -243,103 +211,6 @@ namespace MobileGL {
                 void SetScissorBox(IntVec4 box);      // x, y, width, height
                 const IntVec4& GetScissorBox() const; // x, y, width, height
 
-                // Transform feedback. The fields below are the state of the transform
-                // feedback object currently bound to GL_TRANSFORM_FEEDBACK; see the object
-                // block further down for how a bind swaps them.
-                void BeginTransformFeedback(GLenum primitiveMode, const SharedPtr<ProgramObject>& program) {
-                    m_transformFeedbackActive = true;
-                    m_transformFeedbackPaused = false;
-                    m_transformFeedbackPrimitiveMode = primitiveMode;
-                    m_transformFeedbackProgram = program;
-                    m_transformFeedbackGeneration = ++m_transformFeedbackNextGeneration;
-                    m_transformFeedbackCapturedVertices = 0;
-                    m_transformFeedbackInputPrimitives = 0;
-                }
-                void EndTransformFeedback() {
-                    m_transformFeedbackActive = false;
-                    m_transformFeedbackPaused = false;
-                    m_transformFeedbackProgram.reset();
-                    // What glDrawTransformFeedback on this object replays from now on.
-                    auto& object = m_transformFeedbackObjects[m_boundTransformFeedback];
-                    object.recordedVertices = m_transformFeedbackCapturedVertices;
-                    object.hasCompletedSpan = true;
-                }
-                Bool IsTransformFeedbackActive() const { return m_transformFeedbackActive; }
-                Bool IsTransformFeedbackPaused() const { return m_transformFeedbackPaused; }
-                void SetTransformFeedbackPaused(Bool paused) { m_transformFeedbackPaused = paused; }
-                GLenum GetTransformFeedbackPrimitiveMode() const { return m_transformFeedbackPrimitiveMode; }
-                const SharedPtr<ProgramObject>& GetTransformFeedbackProgram() const {
-                    return m_transformFeedbackProgram;
-                }
-                // Bumped on every BeginTransformFeedback; the backend uses it to
-                // distinguish "resume appending" from "fresh capture".
-                Uint64 GetTransformFeedbackGeneration() const { return m_transformFeedbackGeneration; }
-                // CPU-side primitive accounting for the transform feedback queries:
-                // every captured draw adds its primitive count (draws without a
-                // geometry stage write exactly what they generate).
-                void AddTransformFeedbackPrimitives(Uint64 primitives) {
-                    m_transformFeedbackPrimitiveCounter += primitives;
-                }
-                Uint64 GetTransformFeedbackPrimitiveCounter() const { return m_transformFeedbackPrimitiveCounter; }
-                // Primitives a draw assembled while the capture was paused. GL counts those in
-                // PRIMITIVES_GENERATED, but a backend that answers the query with its own
-                // transform feedback counter cannot see them - nothing was being captured.
-                void AddTransformFeedbackPausedPrimitives(Uint64 primitives) {
-                    m_transformFeedbackPausedPrimitiveCounter += primitives;
-                }
-                Uint64 GetTransformFeedbackPausedPrimitiveCounter() const {
-                    return m_transformFeedbackPausedPrimitiveCounter;
-                }
-                // Vertices already captured since BeginTransformFeedback (drives the
-                // buffer-capacity clamp on the primitives-written accounting).
-                void AddTransformFeedbackCapturedVertices(Uint64 vertices) {
-                    m_transformFeedbackCapturedVertices += vertices;
-                }
-                Uint64 GetTransformFeedbackCapturedVertices() const { return m_transformFeedbackCapturedVertices; }
-                // Raw assembled input primitives fed to the capture stage since Begin
-                // (pre-clamp; drives the GS strip capture-order fixup at EndTF).
-                void AddTransformFeedbackInputPrimitives(Uint64 primitives) {
-                    m_transformFeedbackInputPrimitives += primitives;
-                }
-                Uint64 GetTransformFeedbackInputPrimitives() const { return m_transformFeedbackInputPrimitives; }
-
-                // Transform feedback objects (ARB_transform_feedback2 / GL 4.0 core).
-                // The capture state above and the indexed GL_TRANSFORM_FEEDBACK_BUFFER
-                // binding points are object state, but the context keeps exactly one live
-                // copy of both so that every existing reader - the backends' per-draw sync,
-                // the drawing and getter paths - needs no notion of which object owns them.
-                // A bind therefore saves the live copy into the outgoing object and restores
-                // the incoming one's. Object 0 is the default object and always exists.
-                static constexpr Uint MAX_TRANSFORM_FEEDBACK_BUFFERS = 4;
-                void GenTransformFeedbackNames(Uint number, Vector<Uint>& ids);
-                // A name glGenTransformFeedbacks handed out and glDeleteTransformFeedbacks
-                // has not taken back. Name 0 is always valid.
-                Bool ValidateTransformFeedbackName(Uint index) const;
-                // What glIsTransformFeedback reports: a generated name only becomes the name
-                // of an object once it has been bound at least once (GL 4.6 core 13.2.1).
-                Bool IsTransformFeedbackObject(Uint index) const;
-                void BindTransformFeedbackObject(Uint index);
-                void MarkTransformFeedbackObjectForDeletion(Uint index);
-                Uint GetBoundTransformFeedbackName() const { return m_boundTransformFeedback; }
-                // Vertices the object captured in its last completed span; the vertex count
-                // glDrawTransformFeedback replays.
-                Uint64 GetTransformFeedbackRecordedVertices(Uint index) const;
-                // Whether the object has ever completed a capture span. glDrawTransformFeedback
-                // on an object that has not is INVALID_OPERATION, which a zero vertex count
-                // cannot express: an empty completed span is legal and draws nothing.
-                Bool HasTransformFeedbackCompletedSpan(Uint index) const;
-
-                // The by-name (direct state access) view. A named object that happens to be the
-                // bound one is answered from the live copy, since that is where its state actually
-                // is until a bind swaps it out.
-                void CreateTransformFeedbackObject(Uint index);
-                Bool IsNamedTransformFeedbackActive(Uint index) const;
-                Bool IsNamedTransformFeedbackPaused(Uint index) const;
-                NamedTransformFeedbackBinding GetNamedTransformFeedbackBinding(Uint index, Uint bufferIndex) const;
-                void SetNamedTransformFeedbackBinding(Uint index, Uint bufferIndex,
-                                                      const SharedPtr<BufferObject>& buffer, Range1D range,
-                                                      Bool hasExplicitRange);
-
                 // Framebuffer
                 void GenFramebufferNames(Uint number, Vector<Uint>& framebuffers);
                 const SharedPtr<FramebufferObject>& GetFramebufferObject(Uint index);
@@ -372,51 +243,6 @@ namespace MobileGL {
                 BufferState m_bufferState;
                 VertexArrayState m_vertexArrayState;
                 Array<CurrentVertexAttributeValue, VertexArrayObject::MAX_VERTEX_ATTRIBS> m_currentVertexAttributes{};
-                Bool m_transformFeedbackActive = false;
-                Bool m_transformFeedbackPaused = false;
-                GLenum m_transformFeedbackPrimitiveMode = GL_POINTS;
-                SharedPtr<ProgramObject> m_transformFeedbackProgram;
-                Uint64 m_transformFeedbackGeneration = 0;
-                // Source of the per-span ids above; never rolls back with an object switch.
-                Uint64 m_transformFeedbackNextGeneration = 0;
-                // Not object state: the transform feedback queries snapshot it at BeginQuery
-                // and take the delta at EndQuery, which spans whatever objects were used.
-                Uint64 m_transformFeedbackPrimitiveCounter = 0;
-                Uint64 m_transformFeedbackPausedPrimitiveCounter = 0;
-                Uint64 m_transformFeedbackCapturedVertices = 0;
-                Uint64 m_transformFeedbackInputPrimitives = 0;
-
-                // Everything a transform feedback object owns while it is NOT the bound one.
-                struct TransformFeedbackObjectState {
-                    struct SavedBufferBinding {
-                        SharedPtr<BufferObject> buffer;
-                        Range1D range;
-                        Bool hasExplicitRange = false;
-                    };
-                    Array<SavedBufferBinding, MAX_TRANSFORM_FEEDBACK_BUFFERS> bindings;
-                    Bool active = false;
-                    Bool paused = false;
-                    GLenum primitiveMode = GL_POINTS;
-                    SharedPtr<ProgramObject> program;
-                    Uint64 generation = 0;
-                    Uint64 capturedVertices = 0;
-                    Uint64 inputPrimitives = 0;
-                    Uint64 recordedVertices = 0;
-                    Bool hasCompletedSpan = false;
-                    Bool everBound = false;
-                };
-                void SaveBoundTransformFeedbackState();
-                void RestoreBoundTransformFeedbackState();
-                // operator[] materialises an entry with the default state on first touch, so
-                // the default object (name 0) needs no seeding here.
-                UnorderedMap<Uint, TransformFeedbackObjectState> m_transformFeedbackObjects;
-                IndexGenerator<Uint> m_transformFeedbackNames;
-                Uint m_boundTransformFeedback = 0;
-                // Map membership IS object existence here: a pipeline has no stateful default
-                // object 0, so no everBound flag is needed.
-                UnorderedMap<Uint, SharedPtr<ProgramPipelineObject>> m_programPipelines;
-                IndexGenerator<Uint> m_programPipelineNames;
-                Uint m_boundProgramPipeline = 0;
                 TextureState m_textureState;
                 ProgramState m_programState;
                 RenderState m_renderState;

MobileGL/MG_State/GLState/FramebufferState/FramebufferObject.cpp

@@ -185,20 +185,6 @@ namespace MobileGL::MG_State::GLState {
         return m_externalIndex;
     }
 
-#define MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER(name, member, type)                                                \
-    void FramebufferObject::Set##name(type value) {                                                                    \
-        if (member == value) return;                                                                                    \
-        member = value;                                                                                                 \
-        ++m_objectVersion;                                                                                              \
-    }
-
-    MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER(DefaultWidth, m_defaultWidth, Int)
-    MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER(DefaultHeight, m_defaultHeight, Int)
-    MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER(DefaultLayers, m_defaultLayers, Int)
-    MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER(DefaultSamples, m_defaultSamples, Int)
-    MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER(DefaultFixedSampleLocations, m_defaultFixedSampleLocations, Bool)
-#undef MOBILEGL_DEFINE_FRAMEBUFFER_DEFAULT_SETTER
-
     void FramebufferObject::BumpAttachmentVersion(FramebufferAttachmentType type) {
         ++m_attachmentVersions[static_cast<SizeT>(type)];
         ++m_objectVersion;

MobileGL/MG_State/GLState/FramebufferState/FramebufferObject.h

@@ -129,19 +129,6 @@ namespace MobileGL {
             void SetReadBuffer(FramebufferAttachmentType buf);
             FramebufferAttachmentType GetReadBuffer() const { return m_readBuffer; }
 
-            // GL_ARB_framebuffer_no_attachments state (GL 4.6 core table 23.24). The shape a
-            // framebuffer with no attachments would rasterize at; all zero / FALSE until set.
-            Int GetDefaultWidth() const { return m_defaultWidth; }
-            Int GetDefaultHeight() const { return m_defaultHeight; }
-            Int GetDefaultLayers() const { return m_defaultLayers; }
-            Int GetDefaultSamples() const { return m_defaultSamples; }
-            Bool GetDefaultFixedSampleLocations() const { return m_defaultFixedSampleLocations; }
-            void SetDefaultWidth(Int value);
-            void SetDefaultHeight(Int value);
-            void SetDefaultLayers(Int value);
-            void SetDefaultSamples(Int value);
-            void SetDefaultFixedSampleLocations(Bool value);
-
             FramebufferAttachmentVersionArray GetAllFramebufferAttachmentVersions() const {
                 return m_attachmentVersions;
             }
@@ -161,12 +148,6 @@ namespace MobileGL {
             FramebufferAttachmentArray m_drawBuffers; // Probably no versioning needed for this, just check equality
             FramebufferAttachmentType m_readBuffer = FramebufferAttachmentType::None;
 
-            Int m_defaultWidth = 0;
-            Int m_defaultHeight = 0;
-            Int m_defaultLayers = 0;
-            Int m_defaultSamples = 0;
-            Bool m_defaultFixedSampleLocations = false;
-
             // This version will bump when draw/read buffer changes (by `glDrawBuffer(s)`/`glReadBuffer`)
             Uint16 m_objectVersion = 0;
         };

MobileGL/MG_State/GLState/ProgramState/ProgramObject.cpp

@@ -170,280 +170,9 @@ namespace MobileGL::MG_State::GLState {
         m_uniformNameMaxLength = 0;
         m_attribInNameMaxLength = 0;
         m_uniformBlockNameMaxLength = 0;
-        m_xfbVaryings.clear();
-        m_xfbStrides.clear();
-        m_xfbBufferMode = GL_INTERLEAVED_ATTRIBS;
-        m_xfbVaryingNameMaxLength = 0;
-        m_xfbNeedsScatteredCapture = false;
-        m_xfbPackedStride = 0;
-        m_gsInputPrimitive = GL_NONE;
         m_linkStatus = false;
     }
 
-    namespace {
-        // GL type enum for a vertex-stage output symbol captured by transform
-        // feedback. Covers the scalar/vector/matrix float+integer types transform
-        // feedback may legally capture in GL 3.3.
-        Bool ResolveXfbSymbolType(const glslang::TType& type, GLenum& outType, GLint& outArraySize,
-                                  Uint32& outBytesPerElement) {
-            outArraySize = type.isArray() ? type.getOuterArraySize() : 1;
-            const Int columns = type.isMatrix() ? type.getMatrixCols() : 1;
-            const Int components = type.isMatrix() ? type.getMatrixRows()
-                                                   : (type.isVector() ? type.getVectorSize() : 1);
-            const glslang::TBasicType basic = type.getBasicType();
-            static constexpr GLenum kFloatTypes[5] = {0, GL_FLOAT, GL_FLOAT_VEC2, GL_FLOAT_VEC3, GL_FLOAT_VEC4};
-            static constexpr GLenum kIntTypes[5] = {0, GL_INT, GL_INT_VEC2, GL_INT_VEC3, GL_INT_VEC4};
-            static constexpr GLenum kUintTypes[5] = {0, GL_UNSIGNED_INT, GL_UNSIGNED_INT_VEC2, GL_UNSIGNED_INT_VEC3,
-                                                     GL_UNSIGNED_INT_VEC4};
-            static constexpr GLenum kDoubleTypes[5] = {0, GL_DOUBLE, GL_DOUBLE_VEC2, GL_DOUBLE_VEC3,
-                                                      GL_DOUBLE_VEC4};
-            if (type.isMatrix()) {
-                if (basic != glslang::EbtFloat && basic != glslang::EbtDouble) return false;
-                static constexpr GLenum kMatTypes[5][5] = {
-                    {}, {},
-                    {0, 0, GL_FLOAT_MAT2, GL_FLOAT_MAT2x3, GL_FLOAT_MAT2x4},
-                    {0, 0, GL_FLOAT_MAT3x2, GL_FLOAT_MAT3, GL_FLOAT_MAT3x4},
-                    {0, 0, GL_FLOAT_MAT4x2, GL_FLOAT_MAT4x3, GL_FLOAT_MAT4},
-                };
-                static constexpr GLenum kDoubleMatTypes[5][5] = {
-                    {}, {},
-                    {0, 0, GL_DOUBLE_MAT2, GL_DOUBLE_MAT2x3, GL_DOUBLE_MAT2x4},
-                    {0, 0, GL_DOUBLE_MAT3x2, GL_DOUBLE_MAT3, GL_DOUBLE_MAT3x4},
-                    {0, 0, GL_DOUBLE_MAT4x2, GL_DOUBLE_MAT4x3, GL_DOUBLE_MAT4},
-                };
-                if (columns < 2 || columns > 4 || components < 2 || components > 4) return false;
-                outType = basic == glslang::EbtDouble ? kDoubleMatTypes[columns][components]
-                                                      : kMatTypes[columns][components];
-            } else if (components >= 1 && components <= 4) {
-                switch (basic) {
-                case glslang::EbtFloat: outType = kFloatTypes[components]; break;
-                case glslang::EbtInt: outType = kIntTypes[components]; break;
-                case glslang::EbtUint: outType = kUintTypes[components]; break;
-                // A double-typed varying is capturable like any other; rejecting it here reported
-                // the varying as "not an output of the vertex stage", which it plainly was.
-                case glslang::EbtDouble: outType = kDoubleTypes[components]; break;
-                default: return false;
-                }
-            } else {
-                return false;
-            }
-            // GL 4.6 core 11.1.2.1: a double component occupies eight basic machine units, and
-            // counts as two components against the transform feedback limits.
-            const Uint32 bytesPerComponent = basic == glslang::EbtDouble ? 8u : 4u;
-            outBytesPerElement = static_cast<Uint32>(columns * components) * bytesPerComponent;
-            return true;
-        }
-    } // namespace
-
-    Bool ProgramObject::ResolveTransformFeedbackVaryings() {
-        m_xfbVaryings.clear();
-        m_xfbStrides.clear();
-        m_xfbBufferMode = m_requestedXfbBufferMode;
-        m_xfbVaryingNameMaxLength = 0;
-        m_xfbNeedsScatteredCapture = false;
-        m_xfbPackedStride = 0;
-        if (m_requestedXfbVaryings.empty()) {
-            return true;
-        }
-
-        // Capture happens at the last vertex-processing stage (geometry, then
-        // tessellation evaluation, then vertex).
-        const glslang::TIntermediate* captureIntermediate = nullptr;
-        for (EShLanguage stage : {EShLangGeometry, EShLangTessEvaluation, EShLangVertex}) {
-            captureIntermediate = m_program->getIntermediate(stage);
-            if (captureIntermediate != nullptr) {
-                break;
-            }
-        }
-        if (captureIntermediate == nullptr) {
-            m_infoLog = "Transform feedback varyings requested but the program has no vertex-processing stage.";
-            return false;
-        }
-        const glslang::TIntermAggregate* linkerObjects = captureIntermediate->findLinkerObjects();
-
-        const Bool interleaved = m_xfbBufferMode == GL_INTERLEAVED_ATTRIBS;
-        Uint32 interleavedOffset = 0;
-        // ARB_transform_feedback3 lets an interleaved capture leave holes (gl_SkipComponents1..4)
-        // and move on to the next buffer (gl_NextBuffer). Both only affect where the following
-        // varyings land, so they are consumed here and never become XfbVaryings of their own -
-        // which also keeps them out of the name list a backend declares on its own driver.
-        Uint32 interleavedBufferIndex = 0;
-        Vector<Uint32> interleavedStrides;
-        for (SizeT i = 0; i < m_requestedXfbVaryings.size(); ++i) {
-            const String& name = m_requestedXfbVaryings[i];
-            if (interleaved && name == "gl_NextBuffer") {
-                interleavedStrides.push_back(interleavedOffset);
-                interleavedOffset = 0;
-                ++interleavedBufferIndex;
-                m_xfbNeedsScatteredCapture = true;
-                continue;
-            }
-            if (interleaved && name.size() == 18 && name.compare(0, 17, "gl_SkipComponents") == 0 &&
-                name[17] >= '1' && name[17] <= '4') {
-                interleavedOffset += static_cast<Uint32>(name[17] - '0') * 4;
-                m_xfbNeedsScatteredCapture = true;
-                continue;
-            }
-            for (SizeT j = 0; j < i; ++j) {
-                if (m_requestedXfbVaryings[j] == name) {
-                    m_infoLog = "Transform feedback varying '" + name + "' is specified more than once.";
-                    return false;
-                }
-            }
-
-            XfbVarying varying;
-            varying.name = name;
-            Uint32 bytesPerElement = 0;
-            Bool resolved = false;
-            if (name == "gl_Position") {
-                varying.type = GL_FLOAT_VEC4;
-                varying.size = 1;
-                bytesPerElement = 16;
-                resolved = true;
-            } else if (name == "gl_PointSize") {
-                varying.type = GL_FLOAT;
-                varying.size = 1;
-                bytesPerElement = 4;
-                resolved = true;
-            } else if (linkerObjects != nullptr) {
-                for (const auto* node : linkerObjects->getSequence()) {
-                    const glslang::TIntermSymbol* symbol = node->getAsSymbolNode();
-                    if (symbol == nullptr || symbol->getType().getQualifier().storage != glslang::EvqVaryingOut) {
-                        continue;
-                    }
-                    if (symbol->getName() != name.c_str()) {
-                        continue;
-                    }
-                    resolved = ResolveXfbSymbolType(symbol->getType(), varying.type, varying.size, bytesPerElement);
-                    break;
-                }
-            }
-            if (!resolved) {
-                m_infoLog = "Transform feedback varying '" + name + "' is not an output of the vertex stage.";
-                return false;
-            }
-
-            varying.byteSize = bytesPerElement * static_cast<Uint32>(varying.size);
-            varying.packedOffsetBytes = m_xfbPackedStride;
-            m_xfbPackedStride += varying.byteSize;
-            if (interleaved) {
-                varying.bufferIndex = interleavedBufferIndex;
-                varying.offsetBytes = interleavedOffset;
-                interleavedOffset += varying.byteSize;
-            } else {
-                varying.bufferIndex = static_cast<Uint32>(m_xfbVaryings.size());
-                varying.offsetBytes = 0;
-            }
-            m_xfbVaryingNameMaxLength =
-                std::max(m_xfbVaryingNameMaxLength, static_cast<Int>(name.size()) + 1);
-            m_xfbVaryings.push_back(Move(varying));
-        }
-
-        constexpr Uint32 kMaxSeparateAttribs = 4;
-        constexpr Uint32 kMaxSeparateComponents = 4;
-        constexpr Uint32 kMaxInterleavedComponents = 64;
-        constexpr Uint32 kMaxTransformFeedbackBuffers = 4;
-        if (interleaved) {
-            interleavedStrides.push_back(interleavedOffset);
-            if (interleavedStrides.size() > kMaxTransformFeedbackBuffers) {
-                m_infoLog = "Transform feedback capture uses more buffers than "
-                            "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS.";
-                return false;
-            }
-            for (const Uint32 stride : interleavedStrides) {
-                if (stride > kMaxInterleavedComponents * 4) {
-                    m_infoLog = "Transform feedback interleaved capture exceeds "
-                                "GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS.";
-                    return false;
-                }
-            }
-            m_xfbStrides = Move(interleavedStrides);
-        } else {
-            if (m_xfbVaryings.size() > kMaxSeparateAttribs) {
-                m_infoLog = "Transform feedback separate capture exceeds "
-                            "GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS.";
-                return false;
-            }
-            m_xfbStrides.resize(m_xfbVaryings.size());
-            for (SizeT i = 0; i < m_xfbVaryings.size(); ++i) {
-                if (m_xfbVaryings[i].byteSize > kMaxSeparateComponents * 4) {
-                    m_infoLog = "Transform feedback varying '" + m_xfbVaryings[i].name +
-                                "' exceeds GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS.";
-                    return false;
-                }
-                m_xfbStrides[i] = m_xfbVaryings[i].byteSize;
-            }
-        }
-
-        ResolveGsTriangleStripCapture(captureIntermediate);
-        return true;
-    }
-
-    namespace {
-        // Extracts a geometry shader's per-invocation EmitVertex/EndPrimitive sequence
-        // when it is statically knowable (no emit inside selection/loop/switch). Vulkan
-        // transform feedback captures triangle strips in plain (i, i+1, i+2) order while
-        // GL decomposes odd strip triangles as (i+1, i, i+2) (GL 4.6 table 10.1); with
-        // the static strip lengths the capture buffer can be reordered after EndTF.
-        class GsEmitSequenceTraverser final : public glslang::TIntermTraverser {
-        public:
-            bool visitAggregate(glslang::TVisit, glslang::TIntermAggregate* node) override {
-                if (node->getOp() == glslang::EOpEmitVertex) {
-                    ++emitCount;
-                    hasEmit = true;
-                } else if (node->getOp() == glslang::EOpEndPrimitive) {
-                    FlushStrip();
-                }
-                return true;
-            }
-            bool visitSelection(glslang::TVisit, glslang::TIntermSelection*) override {
-                inControlFlow = true;
-                return true;
-            }
-            bool visitLoop(glslang::TVisit, glslang::TIntermLoop*) override {
-                inControlFlow = true;
-                return true;
-            }
-            bool visitSwitch(glslang::TVisit, glslang::TIntermSwitch*) override {
-                inControlFlow = true;
-                return true;
-            }
-            void FlushStrip() {
-                if (emitCount >= 3) {
-                    stripTriangles.push_back(static_cast<Uint32>(emitCount - 2));
-                }
-                emitCount = 0;
-            }
-
-            Vector<Uint32> stripTriangles;
-            Uint32 emitCount = 0;
-            Bool hasEmit = false;
-            Bool inControlFlow = false;
-        };
-    } // namespace
-
-    void ProgramObject::ResolveGsTriangleStripCapture(const glslang::TIntermediate* captureIntermediate) {
-        m_gsStripTriangles.clear();
-        m_gsStripCaptureFixup = false;
-        if (captureIntermediate == nullptr || m_program == nullptr) {
-            return;
-        }
-        if (m_program->getIntermediate(EShLangGeometry) != captureIntermediate) {
-            return;
-        }
-        if (captureIntermediate->getOutputPrimitive() != glslang::ElgTriangleStrip) {
-            return;
-        }
-        GsEmitSequenceTraverser traverser;
-        const_cast<glslang::TIntermediate*>(captureIntermediate)->getTreeRoot()->traverse(&traverser);
-        traverser.FlushStrip(); // the invocation end acts as an implicit EndPrimitive
-        if (!traverser.hasEmit || traverser.inControlFlow || traverser.stripTriangles.empty()) {
-            return;
-        }
-        m_gsStripTriangles = Move(traverser.stripTriangles);
-        m_gsStripCaptureFixup = true;
-    }
-
     bool ProgramObject::ShaderIsAttached(const SharedPtr<ShaderObject>& shader) {
         MGLOG_D("ProgramObject %u: ShaderIsAttached check for shader %p", m_externalIndex, shader.get());
         auto it = std::find_if(m_shaders.begin(), m_shaders.end(),
@@ -592,32 +321,12 @@ namespace MobileGL::MG_State::GLState {
             return;
         }
 
-        // GL_GEOMETRY_INPUT_TYPE. A draw's primitive type has to be compatible with it
-        // (GL 4.6 core 11.3.1), so it is resolved for every link, not only a capturing one.
-        m_gsInputPrimitive = GL_NONE;
-        if (const glslang::TIntermediate* gs = m_program->getIntermediate(EShLangGeometry)) {
-            switch (gs->getInputPrimitive()) {
-            case glslang::ElgPoints: m_gsInputPrimitive = GL_POINTS; break;
-            case glslang::ElgLines: m_gsInputPrimitive = GL_LINES; break;
-            case glslang::ElgLinesAdjacency: m_gsInputPrimitive = GL_LINES_ADJACENCY; break;
-            case glslang::ElgTriangles: m_gsInputPrimitive = GL_TRIANGLES; break;
-            case glslang::ElgTrianglesAdjacency: m_gsInputPrimitive = GL_TRIANGLES_ADJACENCY; break;
-            default: break;
-            }
-        }
-
         MGLOG_D("ProgramObject %u: Starting reflection", m_externalIndex);
         DoReflection();
         MGLOG_D("ProgramObject %u: Reflection done (linkStatus=%d)", m_externalIndex, (int)m_linkStatus);
         if (!ValidateFragmentOutputLocations()) {
             return;
         }
-        if (!ResolveTransformFeedbackVaryings()) {
-            m_linkStatus = false;
-            MGLOG_E("ProgramObject %u: transform feedback varying resolution failed: %s", m_externalIndex,
-                    m_infoLog.c_str());
-            return;
-        }
 
         MGLOG_D("ProgramObject %u: Starting binary generation", m_externalIndex);
         GenerateBinary();

MobileGL/MG_State/GLState/ProgramState/ProgramObject.h

@@ -45,13 +45,6 @@ namespace MobileGL::MG_State::GLState {
         Vector<SharedPtr<ShaderObject>>& GetAttachedShaders();
         const Vector<SharedPtr<ShaderObject>>& GetAttachedShaders() const;
         const String& GetInfoLog() const { return m_infoLog; }
-        // glCreateShaderProgramv folds the shader's compile log into the program's log, which
-        // is the only place a caller can read it from once the shader name is gone.
-        void AppendInfoLog(const String& text) {
-            if (text.empty()) return;
-            if (!m_infoLog.empty() && m_infoLog.back() != '\n') m_infoLog += '\n';
-            m_infoLog += text;
-        }
         Int GetUniformMaxLength() const { return m_uniformNameMaxLength; }
         Uint GetUniformCount() const { return m_activeUniformCount; }
         Uint GetMaxUniformLocation() const { return m_maxUniformLocation; }
@@ -341,32 +334,16 @@ namespace MobileGL::MG_State::GLState {
         // draw. The memo is keyed by (backendStateVersion, flags); ResetLinkArtifacts and
         // the binding setters below invalidate it by bumping m_backendStateVersion.
         Bool GetBackendHashMemo(Uint flags, Uint64& outHash) const {
-            if (m_backendHashMemoVersion != m_backendStateVersion) return false;
-            for (const auto& slot : m_backendHashMemoSlots) {
-                if (slot.valid && slot.flags == flags) {
-                    outHash = slot.hash;
-                    return true;
-                }
+            if (m_backendHashMemoVersion != m_backendStateVersion || m_backendHashMemoFlags != flags) {
+                return false;
             }
-            return false;
+            outHash = m_backendHashMemo;
+            return true;
         }
         void SetBackendHashMemo(Uint flags, Uint64 hash) const {
-            if (m_backendHashMemoVersion != m_backendStateVersion) {
-                for (auto& slot : m_backendHashMemoSlots) slot.valid = false;
-                m_backendHashMemoVersion = m_backendStateVersion;
-                m_backendHashMemoNextSlot = 0;
-            }
-            for (auto& slot : m_backendHashMemoSlots) {
-                if (slot.valid && slot.flags == flags) {
-                    slot.hash = hash;
-                    return;
-                }
-            }
-            auto& slot = m_backendHashMemoSlots[m_backendHashMemoNextSlot];
-            slot.flags = flags;
-            slot.hash = hash;
-            slot.valid = true;
-            m_backendHashMemoNextSlot = (m_backendHashMemoNextSlot + 1) % kBackendHashMemoSlotCount;
+            m_backendHashMemo = hash;
+            m_backendHashMemoVersion = m_backendStateVersion;
+            m_backendHashMemoFlags = flags;
         }
 
         void SetUniformSamplerOrImageUnitIndex(Uint location, Int unit) {
@@ -384,22 +361,6 @@ namespace MobileGL::MG_State::GLState {
 
         Bool GetDeleteStatus() const { return m_deleteStatus; }
         Bool GetLinkStatus() const { return m_linkStatus; }
-        // GL_PROGRAM_BINARY_RETRIEVABLE_HINT. MobileGL exposes no program binary format
-        // (GL_NUM_PROGRAM_BINARY_FORMATS is 0), so the hint is pure state - which is all
-        // ARB_get_program_binary requires of it.
-        Bool GetBinaryRetrievableHint() const { return m_binaryRetrievableHint; }
-        void SetBinaryRetrievableHint(Bool hint) { m_binaryRetrievableHint = hint; }
-        // GL_PROGRAM_SEPARABLE (GL_ARB_separate_shader_objects): the program may supply a
-        // subset of the stages of a program pipeline. Only takes effect on the next link,
-        // which is why it is plain state here rather than something Link() consults.
-        Bool GetSeparable() const { return m_separable; }
-        void SetSeparable(Bool separable) { m_separable = separable; }
-        // glProgramBinary always fails here (there is no format it could accept) and the
-        // spec then requires the program's LINK_STATUS to read FALSE.
-        void MarkLinkFailedByProgramBinary() {
-            ResetLinkArtifacts();
-            m_infoLog = "No program binary format is supported.";
-        }
         Bool GetValidateStatus() const { return m_validateStatus; }
         Int GetActiveAtomicCounterCount() const { return m_program->getNumAtomicCounters(); }
         Int GetActiveAttributesCount() const { return m_program->getNumPipeInputs(); }
@@ -488,55 +449,6 @@ namespace MobileGL::MG_State::GLState {
             return it == m_shaders.end() ? -1 : (Int)std::distance(m_shaders.begin(), it);
         }
 
-        // Transform feedback (GL 3.0 core: glTransformFeedbackVaryings applies on
-        // the NEXT link; the linked snapshot below is what draws and queries see).
-        struct XfbVarying {
-            String name;
-            GLenum type = GL_FLOAT;
-            GLint size = 1;           // array element count
-            Uint32 bufferIndex = 0;   // capture buffer slot
-            Uint32 offsetBytes = 0;   // offset within the capture buffer
-            Uint32 byteSize = 0;      // bytes captured per vertex for this varying
-            // Offset within the gap-free record a backend that cannot express the GL
-            // layout captures into; see NeedsScatteredTransformFeedbackCapture.
-            Uint32 packedOffsetBytes = 0;
-        };
-        void SetTransformFeedbackVaryings(Vector<String>&& names, GLenum bufferMode) {
-            m_requestedXfbVaryings = Move(names);
-            m_requestedXfbBufferMode = bufferMode;
-        }
-        GLenum GetTransformFeedbackBufferMode() const { return m_xfbBufferMode; }
-        SizeT GetTransformFeedbackVaryingCount() const { return m_xfbVaryings.size(); }
-        const XfbVarying* GetTransformFeedbackVarying(SizeT index) const {
-            return index < m_xfbVaryings.size() ? &m_xfbVaryings[index] : nullptr;
-        }
-        const Vector<XfbVarying>& GetTransformFeedbackVaryings() const { return m_xfbVaryings; }
-        // Stride of one captured vertex in the given capture buffer slot.
-        Uint32 GetTransformFeedbackStride(Uint32 bufferIndex) const {
-            return bufferIndex < m_xfbStrides.size() ? m_xfbStrides[bufferIndex] : 0;
-        }
-        SizeT GetTransformFeedbackBufferCount() const { return m_xfbStrides.size(); }
-        Int GetTransformFeedbackVaryingMaxLength() const { return m_xfbVaryingNameMaxLength; }
-        // True when the capture layout uses gl_SkipComponents / gl_NextBuffer
-        // (ARB_transform_feedback3), which no ES driver can express: it can only pack every
-        // captured varying into one record with no gaps. A backend that captures through
-        // such a driver has to capture into scratch storage and scatter the records into the
-        // application's buffers itself, using packedOffsetBytes as the source offset and
-        // (bufferIndex, offsetBytes, stride) as the destination.
-        Bool NeedsScatteredTransformFeedbackCapture() const { return m_xfbNeedsScatteredCapture; }
-        // Bytes one gap-free captured record occupies.
-        Uint32 GetTransformFeedbackPackedStride() const { return m_xfbPackedStride; }
-        // True when the capture stage is a triangle-strip geometry shader with a
-        // statically-known emit sequence: the Vulkan capture order then needs the GL
-        // odd-triangle vertex swap after EndTransformFeedback.
-        Bool HasGsTriangleStripCaptureFixup() const { return m_gsStripCaptureFixup; }
-        // Triangles per strip, in emission order, for ONE geometry invocation.
-        const Vector<Uint32>& GetGsStripTriangles() const { return m_gsStripTriangles; }
-        // GL_GEOMETRY_INPUT_TYPE of the linked geometry stage (GL_POINTS, GL_LINES,
-        // GL_LINES_ADJACENCY, GL_TRIANGLES or GL_TRIANGLES_ADJACENCY), or GL_NONE when the
-        // program has no geometry stage. Draws must present a compatible primitive type.
-        GLenum GetGeometryInputType() const { return m_gsInputPrimitive; }
-
         Uint GetExternalIndex() const { return m_externalIndex; }
         // Globally-unique, never-reused id for this program object's lifetime. Unlike the GL
         // name (external index), which is freed to a LIFO list and immediately handed back by
@@ -547,11 +459,6 @@ namespace MobileGL::MG_State::GLState {
     private:
         void ResetLinkArtifacts();
         void DoReflection();
-        // Resolves the requested transform feedback varyings against the linked
-        // vertex stage; fails the link (GL semantics) on unknown or duplicate
-        // names or exceeded capture limits.
-        Bool ResolveTransformFeedbackVaryings();
-        void ResolveGsTriangleStripCapture(const glslang::TIntermediate* captureIntermediate);
         void GenerateBinary();
         void WaitUntilGenerationCompleted() const;
         void AddDefaultFragmentShaderIfMissing();
@@ -616,39 +523,15 @@ namespace MobileGL::MG_State::GLState {
         String m_infoLog;
         Bool m_deleteStatus = false;
         Bool m_linkStatus = false;
-        Bool m_binaryRetrievableHint = false;
-        Bool m_separable = false;
         Bool m_validateStatus = true;
         Uint32 m_backendStateVersion = 0;
 
         // Backend-owned content-hash memo (see GetBackendHashMemo): valid only while
-        // m_backendStateVersion matches. Several slots, not one: a backend may resolve the same
-        // program under more than one compile-flag set within a frame (surface rotation, and the
-        // explicit-LOD sampling variant), and a single slot would then miss on every lookup and
-        // re-hash the program's whole SPIR-V once per draw.
-        static constexpr SizeT kBackendHashMemoSlotCount = 4;
-        struct BackendHashMemoSlot {
-            Uint64 hash = 0;
-            Uint flags = 0;
-            Bool valid = false;
-        };
-        mutable Array<BackendHashMemoSlot, kBackendHashMemoSlotCount> m_backendHashMemoSlots{};
-        mutable SizeT m_backendHashMemoNextSlot = 0;
+        // m_backendStateVersion and the compile flags match the recorded values.
+        mutable Uint64 m_backendHashMemo = 0;
         mutable Uint32 m_backendHashMemoVersion = ~0u;
+        mutable Uint m_backendHashMemoFlags = 0;
         Uint32 m_uboContentVersion = 0;
         Uint32 m_linkVersion = 0;
-
-        // Transform feedback: request (applies at next link) and linked snapshot.
-        Vector<String> m_requestedXfbVaryings;
-        GLenum m_requestedXfbBufferMode = GL_INTERLEAVED_ATTRIBS;
-        Vector<XfbVarying> m_xfbVaryings;
-        Vector<Uint32> m_xfbStrides;
-        Vector<Uint32> m_gsStripTriangles;
-        Bool m_gsStripCaptureFixup = false;
-        GLenum m_gsInputPrimitive = GL_NONE;
-        GLenum m_xfbBufferMode = GL_INTERLEAVED_ATTRIBS;
-        Int m_xfbVaryingNameMaxLength = 0;
-        Bool m_xfbNeedsScatteredCapture = false;
-        Uint32 m_xfbPackedStride = 0;
     };
 } // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ProgramState/ProgramPipelineObject.h

@@ -1,83 +0,0 @@
-// MobileGL - MobileGL/MG_State/GLState/ProgramState/ProgramPipelineObject.h
-// Copyright (c) 2025-2026 MobileGL-Dev
-// Licensed under the GNU Lesser General Public License v3.0:
-//   https://www.gnu.org/licenses/gpl-3.0.txt
-//   https://www.gnu.org/licenses/lgpl-3.0.txt
-// SPDX-License-Identifier: LGPL-3.0-only
-// End of Source File Header
-
-#pragma once
-#include <Includes.h>
-#include "ProgramObject.h"
-
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            // A GL_ARB_separate_shader_objects program pipeline (GL 4.6 core 7.4): a set of
-            // per-stage program references plus the program glProgramUniform* addresses when no
-            // program object is in use.
-            class ProgramPipelineObject {
-            public:
-                explicit ProgramPipelineObject(Uint externalIndex) : m_externalIndex(externalIndex) {}
-
-                const SharedPtr<ProgramObject>& GetStageProgram(ShaderStage stage) const {
-                    return m_stagePrograms[static_cast<SizeT>(stage)];
-                }
-                void SetStageProgram(ShaderStage stage, const SharedPtr<ProgramObject>& program) {
-                    m_stagePrograms[static_cast<SizeT>(stage)] = program;
-                }
-
-                const SharedPtr<ProgramObject>& GetActiveProgram() const { return m_activeProgram; }
-                void SetActiveProgram(const SharedPtr<ProgramObject>& program) { m_activeProgram = program; }
-
-                // Distinct from ProgramObject's, which starts true: a pipeline that has never been
-                // validated must report GL_VALIDATE_STATUS as 0 (GL 4.6 core table 23.31).
-                Bool GetValidateStatus() const { return m_validateStatus; }
-                void SetValidateStatus(Bool value) { m_validateStatus = value; }
-
-                const String& GetInfoLog() const { return m_infoLog; }
-                void SetInfoLog(String log) { m_infoLog = Move(log); }
-
-                Uint GetExternalIndex() const { return m_externalIndex; }
-
-                // A draw sees one program, but a pipeline holds one program per stage. The
-                // stages are composited into a single hidden program object, rebuilt whenever
-                // the stage set - or any stage program's own link - changes. The signature is
-                // what that "changes" means: a stage program's lifetime id pins the object and
-                // its backend state version pins the link generation.
-                using DrawProgramSignature =
-                    Array<Uint64, static_cast<SizeT>(ShaderStage::ShaderStageCount) * 2>;
-
-                DrawProgramSignature ComputeDrawProgramSignature() const {
-                    DrawProgramSignature signature{};
-                    for (SizeT stage = 0; stage < static_cast<SizeT>(ShaderStage::ShaderStageCount); ++stage) {
-                        const auto& program = m_stagePrograms[stage];
-                        if (!program) continue;
-                        signature[stage * 2] = program->GetLifetimeId();
-                        signature[stage * 2 + 1] = program->GetBackendStateVersion();
-                    }
-                    return signature;
-                }
-
-                const SharedPtr<ProgramObject>& GetCachedDrawProgram(const DrawProgramSignature& signature) const {
-                    static const SharedPtr<ProgramObject> nullProgram = nullptr;
-                    if (!m_drawProgram || m_drawProgramSignature != signature) return nullProgram;
-                    return m_drawProgram;
-                }
-                void SetCachedDrawProgram(const DrawProgramSignature& signature, SharedPtr<ProgramObject> program) {
-                    m_drawProgramSignature = signature;
-                    m_drawProgram = Move(program);
-                }
-
-            private:
-                Array<SharedPtr<ProgramObject>, static_cast<SizeT>(ShaderStage::ShaderStageCount)> m_stagePrograms{};
-                SharedPtr<ProgramObject> m_activeProgram;
-                SharedPtr<ProgramObject> m_drawProgram;
-                DrawProgramSignature m_drawProgramSignature{};
-                String m_infoLog;
-                const Uint m_externalIndex = 0;
-                Bool m_validateStatus = false;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL

MobileGL/MG_State/GLState/ProgramState/ProgramState.cpp

@@ -29,25 +29,17 @@ namespace MobileGL::MG_State::GLState {
         if (!CheckIndexAvail(program, m_programObjects)) return; // FIXME: add error reporting here
         auto& programObject = m_programObjects[program];
         if (programObject != nullptr) {
+            // Snapshot the attachments: deleting the program is a detach point for shaders
+            // that were flagged with glDeleteShader while still attached.
+            const Vector<SharedPtr<ShaderObject>> attachedShaders = programObject->GetAttachedShaders();
             programObject->MarkAsDeleted();
-            // A program in use is only FLAGGED: its name (and every program query) stays
-            // valid until it stops being current, at which point UseProgram finishes the job.
-            if (programObject == m_currentProgram) return;
-            DestroyProgramSlot(program);
-        }
-    }
-
-    void ProgramState::DestroyProgramSlot(const Uint program) {
-        auto& programObject = m_programObjects[program];
-        // Snapshot the attachments: deleting the program is a detach point for shaders
-        // that were flagged with glDeleteShader while still attached.
-        const Vector<SharedPtr<ShaderObject>> attachedShaders = programObject->GetAttachedShaders();
-        programObject.reset();
-        m_programIndexGenerator.Delete(program);
-        for (const auto& shader : attachedShaders) {
-            const Uint shaderName = shader->GetExternalIndex();
-            if (CheckIndexAvail(shaderName, m_shaderObjects) && m_shaderObjects[shaderName] == shader) {
-                ReleaseShaderNameIfOrphaned(shaderName);
+            programObject.reset();
+            m_programIndexGenerator.Delete(program);
+            for (const auto& shader : attachedShaders) {
+                const Uint shaderName = shader->GetExternalIndex();
+                if (CheckIndexAvail(shaderName, m_shaderObjects) && m_shaderObjects[shaderName] == shader) {
+                    ReleaseShaderNameIfOrphaned(shaderName);
+                }
             }
         }
     }
@@ -57,22 +49,10 @@ namespace MobileGL::MG_State::GLState {
     }
 
     void ProgramState::UseProgram(Uint program) {
-        const SharedPtr<ProgramObject> previous = m_currentProgram;
-
         if (program == 0) m_currentProgram.reset();
 
-        if (CheckIndexAvail(program, m_programObjects)) {
-            m_currentProgram = m_programObjects[program];
-        }
-
-        // A deletion flagged while the program was current takes effect the moment it
-        // stops being current.
-        if (previous != nullptr && previous != m_currentProgram && previous->GetDeleteStatus()) {
-            const Uint previousName = previous->GetExternalIndex();
-            if (CheckIndexAvail(previousName, m_programObjects) && m_programObjects[previousName] == previous) {
-                DestroyProgramSlot(previousName);
-            }
-        }
+        if (!CheckIndexAvail(program, m_programObjects)) return;
+        m_currentProgram = m_programObjects[program];
     }
 
     Uint ProgramState::CreateShader(ShaderStage stage) {

MobileGL/MG_State/GLState/ProgramState/ProgramState.h

@@ -35,9 +35,6 @@ namespace MobileGL::MG_State::GLState {
 
     private:
         Bool ShaderHasGLVisibleAttachment(const SharedPtr<ShaderObject>& shaderObject) const;
-        // Frees the name slot and releases orphaned attached shaders; the immediate half
-        // of glDeleteProgram (deferred while the program is current).
-        void DestroyProgramSlot(Uint program);
 
         template <typename T>
         static Bool CheckIndexAvail(const SizeT idx, const Vector<T>& vec) {

MobileGL/MG_State/GLState/ProgramState/ShaderObject.cpp

@@ -169,15 +169,6 @@ namespace MobileGL::MG_State::GLState {
             }
         }
 
-        const std::optional<String> reservedError =
-            MG_Util::ShaderTranspiler::FindReservedIdentifierViolation(compileSource);
-        if (reservedError) {
-            m_compileStatus = false;
-            m_shader.reset();
-            m_infoLog = *reservedError;
-            return;
-        }
-
         // Compile for OpenGL here, so that we can do validation and link
         // like a real OpenGL driver at linking stage
         // Will compile for other backends later.

MobileGL/MG_State/GLState/RenderState/RenderState.cpp

@@ -37,10 +37,6 @@ namespace MobileGL {
                 return m_version;
             }
 
-            Uint RenderState::GetPipelineStateVersion() const {
-                return m_pipelineStateVersion;
-            }
-
             const RenderStateParameters& RenderState::GetAllParameters() const {
                 return m_parameters;
             }
@@ -126,7 +122,7 @@ namespace MobileGL {
                 if (m_parameters.PolygonModeFront == front && m_parameters.PolygonModeBack == back) return;
                 m_parameters.PolygonModeFront = front;
                 m_parameters.PolygonModeBack = back;
-                BumpVersions();
+                ++m_version;
             }
 
             GLenum RenderState::GetPolygonModeFront() const {
@@ -158,17 +154,6 @@ namespace MobileGL {
                 return m_parameters.PointSize;
             }
 
-            void RenderState::SetPatchVertices(Uint vertices) {
-                if (m_parameters.PatchVertices == vertices) return;
-
-                m_parameters.PatchVertices = vertices;
-                BumpVersions();
-            }
-
-            Uint RenderState::GetPatchVertices() const {
-                return m_parameters.PatchVertices;
-            }
-
             void RenderState::SetPolygonOffset(Float factor, Float units) {
                 if (m_parameters.PolygonOffsetFactor == factor && m_parameters.PolygonOffsetUnits == units) return;
 
@@ -191,7 +176,7 @@ namespace MobileGL {
     case CapabilityInput::capability:                                                                                  \
         if (m_parameters.capability##Enabled == (flag)) break;                                                         \
         m_parameters.capability##Enabled = (flag);                                                                     \
-        BumpVersions();                                                                                                   \
+        ++m_version;                                                                                                   \
         break;
 
                 switch (cap) {
@@ -224,7 +209,7 @@ namespace MobileGL {
                         blendState.Enabled = enabled;
                         stateChanged = true;
                     }
-                    if (stateChanged) BumpVersions();
+                    if (stateChanged) ++m_version;
                     break;
                 }
                 default: // not supported currently
@@ -280,7 +265,7 @@ namespace MobileGL {
                 if (m_parameters.BlendStates[index].Enabled == enabled) return;
 
                 m_parameters.BlendStates[index].Enabled = enabled;
-                BumpVersions();
+                ++m_version;
             }
 
             Bool RenderState::IsCapabilityEnabledIndexed(CapabilityInput cap, Uint index) const {
@@ -312,7 +297,7 @@ namespace MobileGL {
                     stateChanged = true;
                 }
                 if (!stateChanged) return;
-                BumpVersions();
+                ++m_version;
             }
 
             void RenderState::GetBlendFunc(BlendFactor& srcRGB, BlendFactor& dstRGB, BlendFactor& srcAlpha,
@@ -338,7 +323,7 @@ namespace MobileGL {
                 blendState.DstFactorRGB = dstRGB;
                 blendState.SrcFactorAlpha = srcAlpha;
                 blendState.DstFactorAlpha = dstAlpha;
-                BumpVersions();
+                ++m_version;
             }
 
             void RenderState::GetBlendFuncIndexed(Uint index, BlendFactor& srcRGB, BlendFactor& dstRGB,
@@ -364,7 +349,7 @@ namespace MobileGL {
                     stateChanged = true;
                 }
                 if (!stateChanged) return;
-                BumpVersions();
+                ++m_version;
             }
 
             void RenderState::GetBlendEquation(BlendEquation& color, BlendEquation& alpha) const {
@@ -383,7 +368,7 @@ namespace MobileGL {
                 }
                 blendState.ColorEquation = color;
                 blendState.AlphaEquation = alpha;
-                BumpVersions();
+                ++m_version;
             }
 
             void RenderState::GetBlendEquationIndexed(Uint index, BlendEquation& color, BlendEquation& alpha) const {
@@ -399,7 +384,7 @@ namespace MobileGL {
                 if (m_parameters.LogicOp == logicOp) return;
 
                 m_parameters.LogicOp = logicOp;
-                BumpVersions();
+                ++m_version;
             }
 
             LogicOperation RenderState::GetLogicOp() const {
@@ -411,7 +396,7 @@ namespace MobileGL {
                 if (m_parameters.DepthFunc == func) return;
 
                 m_parameters.DepthFunc = func;
-                BumpVersions();
+                ++m_version;
             }
 
             DepthTestFunc RenderState::GetDepthFunc() const {
@@ -422,7 +407,7 @@ namespace MobileGL {
                 if (m_parameters.DepthMask == flag) return;
 
                 m_parameters.DepthMask = flag;
-                BumpVersions();
+                ++m_version;
             }
 
             Bool RenderState::GetDepthMask() const {
@@ -433,15 +418,10 @@ namespace MobileGL {
                 StencilFaceState& state = m_parameters.StencilStates[GetStencilFaceIndex(face)];
                 if (state.Func == func && state.Ref == ref && state.ValueMask == mask) return;
 
-                // Only Func is baked into the pipeline; Ref and ValueMask are dynamic state
-                // (VK_DYNAMIC_STATE_STENCIL_REFERENCE / _COMPARE_MASK), so glStencilFunc changing
-                // only the reference must not evict a cached pipeline.
-                const Bool pipelineRelevantChange = state.Func != func;
                 state.Func = func;
                 state.Ref = ref;
                 state.ValueMask = mask;
                 ++m_version;
-                if (pipelineRelevantChange) ++m_pipelineStateVersion;
             }
 
             void RenderState::SetStencilMask(StencilFace face, Uint32 mask) {
@@ -463,7 +443,7 @@ namespace MobileGL {
                 state.FailOp = fail;
                 state.PassDepthFailOp = depthFail;
                 state.PassDepthPassOp = depthPass;
-                BumpVersions();
+                ++m_version;
             }
 
             const StencilFaceState& RenderState::GetStencilState(StencilFace face) const {
@@ -480,7 +460,7 @@ namespace MobileGL {
                         changed = true;
                     }
                 }
-                if (changed) BumpVersions();
+                if (changed) ++m_version;
             }
 
             BoolVec4 RenderState::GetColorMask() const {
@@ -491,7 +471,7 @@ namespace MobileGL {
             void RenderState::SetColorMaskIndexed(Uint index, BoolVec4 mask) {
                 if (m_parameters.ColorMasks[index] == mask) return;
                 m_parameters.ColorMasks[index] = mask;
-                BumpVersions();
+                ++m_version;
             }
 
             BoolVec4 RenderState::GetColorMaskIndexed(Uint index) const {
@@ -559,7 +539,7 @@ namespace MobileGL {
 
                 m_parameters.SampleCoverageValue = value;
                 m_parameters.SampleCoverageInvert = invert;
-                BumpVersions();
+                ++m_version;
             }
 
             Float RenderState::GetSampleCoverageValue() const {
@@ -574,7 +554,7 @@ namespace MobileGL {
                 if (m_parameters.SampleMaskValue == mask) return;
 
                 m_parameters.SampleMaskValue = mask;
-                BumpVersions();
+                ++m_version;
             }
 
             Uint32 RenderState::GetSampleMaskValue() const {
@@ -648,7 +628,7 @@ namespace MobileGL {
                 if (m_parameters.CullFaceModeSetting == mode) return;
 
                 m_parameters.CullFaceModeSetting = mode;
-                BumpVersions();
+                ++m_version;
             }
 
             CullFaceMode RenderState::GetCullFaceMode() const {
@@ -659,7 +639,7 @@ namespace MobileGL {
                 if (m_parameters.FrontFaceModeSetting == mode) return;
 
                 m_parameters.FrontFaceModeSetting = mode;
-                BumpVersions();
+                ++m_version;
             }
 
             FrontFaceMode RenderState::GetFrontFaceMode() const {
@@ -670,7 +650,7 @@ namespace MobileGL {
                 if (m_parameters.ProvokingVertexModeSetting == mode) return;
 
                 m_parameters.ProvokingVertexModeSetting = mode;
-                BumpVersions();
+                ++m_version;
             }
 
             ProvokingVertexMode RenderState::GetProvokingVertexMode() const {

MobileGL/MG_State/GLState/RenderState/RenderState.h

@@ -224,8 +224,6 @@ namespace MobileGL {
         IntVec4 Viewport = IntVec4(0, 0, 0, 0); // x, y, width, height
         Float LineWidth = 1.0f;
         Float PointSize = 1.0f;
-        // GL_PATCH_VERTICES: how many vertices one tessellation patch consumes.
-        Uint PatchVertices = 3;
         Float PolygonOffsetFactor = 0.0f;
         Float PolygonOffsetUnits = 0.0f;
 
@@ -312,8 +310,6 @@ namespace MobileGL {
                 RenderState();
 
                 Uint GetVersion() const;
-                // Version of the pipeline-relevant subset only - see m_pipelineStateVersion.
-                Uint GetPipelineStateVersion() const;
                 const RenderStateParameters& GetAllParameters() const;
 
                 // Rasterization
@@ -323,8 +319,6 @@ namespace MobileGL {
                 Float GetLineWidth() const;
                 void SetPointSize(Float size);
                 Float GetPointSize() const;
-                void SetPatchVertices(Uint vertices);
-                Uint GetPatchVertices() const;
                 void SetPolygonOffset(Float factor, Float units);
                 Float GetPolygonOffsetFactor() const;
                 Float GetPolygonOffsetUnits() const;
@@ -420,21 +414,7 @@ namespace MobileGL {
                 const IntVec4& GetScissorBox() const; // x, y, width, height
 
             private:
-                // Bump both: any state change invalidates the draw snapshot, and this one also
-                // changes the VkPipeline (or its DirectGLES equivalent).
-                void BumpVersions() {
-                    ++m_version;
-                    ++m_pipelineStateVersion;
-                }
-
                 Uint16 m_version = 0;
-                // Only the subset of render state that a backend bakes INTO a pipeline object.
-                // Viewport, scissor, depth range, blend colour, line width, polygon offset, stencil
-                // write mask, the clear values, hints and the point-size family are all either
-                // dynamic pipeline state or not pipeline state at all, so changing one of them must
-                // not evict a cached pipeline. Keeping one counter for both made a glViewport call
-                // knock the next draw off the pipeline memo AND the draw fast path.
-                Uint16 m_pipelineStateVersion = 0;
                 RenderStateParameters m_parameters;
 
                 // Pixel Store

MobileGL/MG_State/GLState/SamplerState/SamplerObject.cpp

@@ -139,61 +139,6 @@ namespace MobileGL {
                 return m_samplerParameters.maxAnisotropy;
             }
 
-            // The three border-colour representations are kept in step so a getter of any form has
-            // an answer whichever form was written. Integer <-> float uses the plain value, matching
-            // what glTexParameterIiv/Iuiv mean: those forms are for integer texture formats, whose
-            // border components are the raw integers rather than a normalized fraction.
-            void SamplerObject::SetBorderColor(const FloatVec4& color) {
-                if (color == m_samplerParameters.borderColor) return;
-
-                m_samplerParameters.borderColor = color;
-                m_samplerParameters.borderColorI =
-                    IntVec4(static_cast<Int32>(color.x()), static_cast<Int32>(color.y()),
-                            static_cast<Int32>(color.z()), static_cast<Int32>(color.w()));
-                m_samplerParameters.borderColorUI =
-                    UintVec4(static_cast<Uint32>(color.x()), static_cast<Uint32>(color.y()),
-                             static_cast<Uint32>(color.z()), static_cast<Uint32>(color.w()));
-                ++m_version;
-            }
-
-            void SamplerObject::SetBorderColorI(const IntVec4& color) {
-                if (color == m_samplerParameters.borderColorI) return;
-
-                m_samplerParameters.borderColorI = color;
-                m_samplerParameters.borderColorUI =
-                    UintVec4(static_cast<Uint32>(color.x()), static_cast<Uint32>(color.y()),
-                             static_cast<Uint32>(color.z()), static_cast<Uint32>(color.w()));
-                m_samplerParameters.borderColor =
-                    FloatVec4(static_cast<Float>(color.x()), static_cast<Float>(color.y()),
-                              static_cast<Float>(color.z()), static_cast<Float>(color.w()));
-                ++m_version;
-            }
-
-            void SamplerObject::SetBorderColorUI(const UintVec4& color) {
-                if (color == m_samplerParameters.borderColorUI) return;
-
-                m_samplerParameters.borderColorUI = color;
-                m_samplerParameters.borderColorI =
-                    IntVec4(static_cast<Int32>(color.x()), static_cast<Int32>(color.y()),
-                            static_cast<Int32>(color.z()), static_cast<Int32>(color.w()));
-                m_samplerParameters.borderColor =
-                    FloatVec4(static_cast<Float>(color.x()), static_cast<Float>(color.y()),
-                              static_cast<Float>(color.z()), static_cast<Float>(color.w()));
-                ++m_version;
-            }
-
-            const FloatVec4& SamplerObject::GetBorderColor() const {
-                return m_samplerParameters.borderColor;
-            }
-
-            const IntVec4& SamplerObject::GetBorderColorI() const {
-                return m_samplerParameters.borderColorI;
-            }
-
-            const UintVec4& SamplerObject::GetBorderColorUI() const {
-                return m_samplerParameters.borderColorUI;
-            }
-
             SamplerCompareMode SamplerObject::GetCompareMode() const {
                 return m_samplerParameters.compareMode;
             }

MobileGL/MG_State/GLState/SamplerState/SamplerObject.h

@@ -8,7 +8,6 @@
 
 #pragma once
 #include <Includes.h>
-#include <MG_Util/Math/VectorTypes.h>
 
 namespace MobileGL {
     enum class SamplerFilterMode {
@@ -67,18 +66,8 @@ namespace MobileGL {
         Float maxLod = 1000.0f;
         Float lodBias = 0.0f;
         Float maxAnisotropy = 1.0f;
-        // GL 4.6 core table 23.18 / GLES 3.2 table 21.16: TEXTURE_COMPARE_FUNC starts at LEQUAL,
-        // for both sampler objects and the sampler state a texture object carries.
-        SamplerCompareFunc compareFunc = SamplerCompareFunc::LessEqual;
+        SamplerCompareFunc compareFunc = SamplerCompareFunc::Always;
         SamplerCompareMode compareMode = SamplerCompareMode::None;
-        // TEXTURE_BORDER_COLOR is sampler state (GL 4.6 core table 23.18), so it belongs here and
-        // not on the texture - a texture object reaches it through the sampler object it owns. The
-        // three representations are the float, integer and unsigned-integer forms glSamplerParameterfv,
-        // glSamplerParameterIiv and glSamplerParameterIuiv set; whichever is written last defines
-        // the colour and the other two follow it, so a getter always has an answer.
-        FloatVec4 borderColor = {0.0f, 0.0f, 0.0f, 0.0f};
-        IntVec4 borderColorI = {0, 0, 0, 0};
-        UintVec4 borderColorUI = {0, 0, 0, 0};
     };
 
     namespace MG_State {
@@ -98,9 +87,6 @@ namespace MobileGL {
                 void SetMaxAnisotropy(Float maxAnisotropy);
                 void SetSamplerCompareFunc(SamplerCompareFunc func);
                 void SetCompareMode(SamplerCompareMode mode);
-                void SetBorderColor(const FloatVec4& color);
-                void SetBorderColorI(const IntVec4& color);
-                void SetBorderColorUI(const UintVec4& color);
 
                 SamplerWrapMode GetWrapS() const;
                 SamplerWrapMode GetWrapT() const;
@@ -114,9 +100,6 @@ namespace MobileGL {
                 Float GetMaxAnisotropy() const;
                 SamplerCompareMode GetCompareMode() const;
                 SamplerCompareFunc GetSamplerCompareFunc() const;
-                const FloatVec4& GetBorderColor() const;
-                const IntVec4& GetBorderColorI() const;
-                const UintVec4& GetBorderColorUI() const;
                 Uint GetExternalIndex() const;
                 Uint16 GetVersion() const;
                 // Globally-unique, never-reused id for this sampler object's lifetime. Lets a

MobileGL/MG_State/GLState/TextureState/MipmapStorage.cpp

@@ -27,52 +27,11 @@ namespace MobileGL {
                     m_texelSizes.reserve(std::bit_ceil(requiredLevelCount));
                     m_texelSizes.resize(requiredLevelCount);
                     m_isDirty.resize(requiredLevelCount, false);
-                    m_compressedData.resize(requiredLevelCount);
-                    m_compressedFormats.resize(requiredLevelCount, GL_NONE);
                 }
 
                 m_texelSizes[level] = input.texelSize;
                 auto& data = m_data[level];
                 data.resize(input.byteSize, 0);
-
-                // Respecifying a level drops whatever compressed image it used to hold. Without this,
-                // a glTexImage2D or glTexStorage2D over a level a previous glCompressedTexImage2D had
-                // shadowed would leave GL_TEXTURE_COMPRESSED answering true and glGetCompressedTexImage
-                // handing back the stale blob. Every allocation path funnels through here, so clearing
-                // once covers all of them; the compressed path re-arms the tag immediately afterwards
-                // via SetCompressedImage.
-                m_compressedFormats[level] = GL_NONE;
-                m_compressedData[level].clear();
-                m_compressedData[level].shrink_to_fit();
-            }
-
-            void MipmapStorage::SetCompressedImage(Uint level, GLenum internalFormat, const void* data, SizeT size) {
-                MOBILEGL_ASSERT(level < m_compressedData.size(), "SetCompressedImage: level out of range");
-
-                m_compressedFormats[level] = internalFormat;
-                auto& blob = m_compressedData[level];
-                // Zero-filled when data is null: glCompressedTexImage* with a null pointer defines the
-                // level's size and format but leaves its contents undefined, and zeros are the one
-                // reproducible answer a later glGetCompressedTexImage can give.
-                blob.assign(size, 0);
-                if (data != nullptr && size > 0) {
-                    Memcpy(blob.data(), data, size);
-                }
-            }
-
-            GLenum MipmapStorage::GetCompressedFormat(Uint level) const {
-                if (level >= m_compressedFormats.size()) return GL_NONE;
-                return m_compressedFormats[level];
-            }
-
-            SizeT MipmapStorage::GetCompressedByteSize(Uint level) const {
-                if (level >= m_compressedData.size()) return 0;
-                return m_compressedData[level].size();
-            }
-
-            const void* MipmapStorage::MapCompressedData(Uint level) const {
-                if (level >= m_compressedData.size()) return nullptr;
-                return m_compressedData[level].data();
             }
 
             void MipmapStorage::TruncateToLevelCount(SizeT levelCount) {
@@ -81,8 +40,6 @@ namespace MobileGL {
                 m_data.resize(levelCount);
                 m_texelSizes.resize(levelCount);
                 m_isDirty.resize(levelCount);
-                m_compressedData.resize(levelCount);
-                m_compressedFormats.resize(levelCount);
             }
 
             void MipmapStorage::UpdateSubData(Uint level, DataPtr input) {

MobileGL/MG_State/GLState/TextureState/MipmapStorage.h

@@ -30,27 +30,10 @@ namespace MobileGL {
                 void MarkDirty(Uint level, bool dirty);
                 bool IsDirty(Uint level) const;
 
-                // The bytes an application handed to glCompressedTexImage*, kept verbatim beside the
-                // (uncompressed) texel shadow rather than in place of it. GL 4.6 core 8.11 requires
-                // glGetCompressedTexImage to return the image *as stored*, and no backend here has a
-                // BC/ETC codec, so a re-encode could never be byte-exact; at the same time m_data has
-                // to keep the "width * height * bytes-per-texel" layout that the backend upload
-                // sizing, glGenerateMipmap's bytes-per-texel division and the pixel-store packer all
-                // divide by. Two parallel vectors, one invariant preserved. Call order is
-                // AllocateLevel then SetCompressedImage - AllocateLevel clears the tag, so a plain
-                // glTexImage2D over the level un-compresses it.
-                void SetCompressedImage(Uint level, GLenum internalFormat, const void* data, SizeT size);
-                // GL_NONE when the level is not stored compressed.
-                GLenum GetCompressedFormat(Uint level) const;
-                SizeT GetCompressedByteSize(Uint level) const;
-                const void* MapCompressedData(Uint level) const;
-
             protected:
                 Vector<IntVec3> m_texelSizes;
                 Vector<Vector<Uint8>> m_data;
                 Vector<bool> m_isDirty;
-                Vector<Vector<Uint8>> m_compressedData;
-                Vector<GLenum> m_compressedFormats;
             };
         } // namespace GLState
     } // namespace MG_State

MobileGL/MG_State/GLState/TextureState/MipmapUploadTargetArray.h

@@ -74,27 +74,6 @@ namespace MobileGL {
                     return m_storage[targetIndex].IsDirty(level);
                 }
 
-                void SetCompressedImage(Uint targetIndex, Uint level, GLenum internalFormat, const void* data,
-                                        SizeT size) {
-                    MOBILEGL_ASSERT(targetIndex < TargetCount, "SetCompressedImage: target invalid");
-                    m_storage[targetIndex].SetCompressedImage(level, internalFormat, data, size);
-                }
-
-                GLenum GetCompressedFormat(Uint targetIndex, Uint level) const {
-                    MOBILEGL_ASSERT(targetIndex < TargetCount, "GetCompressedFormat: target invalid");
-                    return m_storage[targetIndex].GetCompressedFormat(level);
-                }
-
-                SizeT GetCompressedByteSize(Uint targetIndex, Uint level) const {
-                    MOBILEGL_ASSERT(targetIndex < TargetCount, "GetCompressedByteSize: target invalid");
-                    return m_storage[targetIndex].GetCompressedByteSize(level);
-                }
-
-                const void* MapCompressedData(Uint targetIndex, Uint level) const {
-                    MOBILEGL_ASSERT(targetIndex < TargetCount, "MapCompressedData: target invalid");
-                    return m_storage[targetIndex].MapCompressedData(level);
-                }
-
             protected:
                 Array<MipmapStorage, TargetCount> m_storage;
             };

MobileGL/MG_State/GLState/TextureState/TextureEnum.h

@@ -162,7 +162,6 @@ namespace MobileGL {
         DepthComponent32F,
         Depth24Stencil8,
         Depth32FStencil8,
-        StencilIndex8,
 
         DepthComponent,
         DepthStencil,

MobileGL/MG_State/GLState/TextureState/TextureObject.cpp

@@ -24,19 +24,6 @@ namespace MobileGL {
             TextureObjectBase::TextureObjectBase(TextureTarget target, Uint externalIndex)
                 : m_externalIndex(externalIndex), m_lifetimeId(AllocateLifetimeId()), m_target(target) {
                 m_sampler = MakeShared<SamplerObject>(0);
-                if (target == TextureTarget::TextureRectangle) {
-                    // A rectangle texture has no mip chain, so its initial sampler state is not
-                    // the shared one: TEXTURE_MIN_FILTER is LINEAR and TEXTURE_WRAP_S/T are
-                    // CLAMP_TO_EDGE (GL 4.6 core table 23.15). Leaving the 2D default of
-                    // NEAREST_MIPMAP_LINEAR in place makes the texture mipmap-incomplete from
-                    // birth, and every lookup that the application never re-filtered reads
-                    // (0, 0, 0, 1) instead of its contents.
-                    m_sampler->SetMinFilter(SamplerFilterMode::Linear);
-                    m_sampler->SetMipmapMode(SamplerMipmapMode::None);
-                    m_sampler->SetWrapS(SamplerWrapMode::ClampToEdge);
-                    m_sampler->SetWrapT(SamplerWrapMode::ClampToEdge);
-                    m_sampler->SetWrapR(SamplerWrapMode::ClampToEdge);
-                }
             }
 
             TextureInternalFormat TextureObjectBase::GetFormat() const {
@@ -88,40 +75,48 @@ namespace MobileGL {
                 return m_externalIndex;
             }
 
-            // TEXTURE_BORDER_COLOR is sampler state, so it lives on the SamplerObject this texture
-            // owns rather than being duplicated here - a sampler object bound over the texture then
-            // supplies its own, exactly as GL says it should. The texture params version still moves
-            // on a write, because the DirectGLES texture sync memoises on it.
             const FloatVec4& TextureObjectBase::GetBorderColor() const {
-                return m_sampler->GetBorderColor();
+                return m_borderColor;
             }
 
             void TextureObjectBase::SetBorderColor(const FloatVec4& color) {
-                if (color == m_sampler->GetBorderColor()) return;
+                if (color == m_borderColor) return;
 
-                m_sampler->SetBorderColor(color);
+                m_borderColor = color;
+                m_borderColorI = IntVec4(static_cast<Int32>(color.x()), static_cast<Int32>(color.y()),
+                                         static_cast<Int32>(color.z()), static_cast<Int32>(color.w()));
+                m_borderColorUI = UintVec4(static_cast<Uint32>(color.x()), static_cast<Uint32>(color.y()),
+                                           static_cast<Uint32>(color.z()), static_cast<Uint32>(color.w()));
                 ++m_textureParamsVersion;
             }
 
             const IntVec4& TextureObjectBase::GetBorderColorI() const {
-                return m_sampler->GetBorderColorI();
+                return m_borderColorI;
             }
 
             void TextureObjectBase::SetBorderColorI(const IntVec4& color) {
-                if (color == m_sampler->GetBorderColorI()) return;
+                if (color == m_borderColorI) return;
 
-                m_sampler->SetBorderColorI(color);
+                m_borderColorI = color;
+                m_borderColorUI = UintVec4(static_cast<Uint32>(color.x()), static_cast<Uint32>(color.y()),
+                                           static_cast<Uint32>(color.z()), static_cast<Uint32>(color.w()));
+                m_borderColor = FloatVec4(static_cast<Float>(color.x()), static_cast<Float>(color.y()),
+                                          static_cast<Float>(color.z()), static_cast<Float>(color.w()));
                 ++m_textureParamsVersion;
             }
 
             const UintVec4& TextureObjectBase::GetBorderColorUI() const {
-                return m_sampler->GetBorderColorUI();
+                return m_borderColorUI;
             }
 
             void TextureObjectBase::SetBorderColorUI(const UintVec4& color) {
-                if (color == m_sampler->GetBorderColorUI()) return;
+                if (color == m_borderColorUI) return;
 
-                m_sampler->SetBorderColorUI(color);
+                m_borderColorUI = color;
+                m_borderColorI = IntVec4(static_cast<Int32>(color.x()), static_cast<Int32>(color.y()),
+                                         static_cast<Int32>(color.z()), static_cast<Int32>(color.w()));
+                m_borderColor = FloatVec4(static_cast<Float>(color.x()), static_cast<Float>(color.y()),
+                                          static_cast<Float>(color.z()), static_cast<Float>(color.w()));
                 ++m_textureParamsVersion;
             }
 
@@ -301,27 +296,6 @@ namespace MobileGL {
                 return m_textureStorage.IsDirty(GetIndexOfTextureUploadTarget(uploadTarget), mipmapLevel);
             }
 
-            void TextureObjectWithOneMipmap::SetMipmapCompressedImage(TextureUploadTarget uploadTarget, Uint mipmapLevel,
-                                                              GLenum internalFormat, const void* data, SizeT size) {
-                m_textureStorage.SetCompressedImage(GetIndexOfTextureUploadTarget(uploadTarget), mipmapLevel,
-                                                    internalFormat, data, size);
-            }
-
-            GLenum TextureObjectWithOneMipmap::GetMipmapCompressedFormat(TextureUploadTarget uploadTarget,
-                                                                  Uint mipmapLevel) const {
-                return m_textureStorage.GetCompressedFormat(GetIndexOfTextureUploadTarget(uploadTarget), mipmapLevel);
-            }
-
-            SizeT TextureObjectWithOneMipmap::GetMipmapCompressedByteSize(TextureUploadTarget uploadTarget,
-                                                                    Uint mipmapLevel) const {
-                return m_textureStorage.GetCompressedByteSize(GetIndexOfTextureUploadTarget(uploadTarget), mipmapLevel);
-            }
-
-            const void* TextureObjectWithOneMipmap::MapMipmapCompressedImage(TextureUploadTarget uploadTarget,
-                                                                       Uint mipmapLevel) const {
-                return m_textureStorage.MapCompressedData(GetIndexOfTextureUploadTarget(uploadTarget), mipmapLevel);
-            }
-
             IntVec3 TextureObjectWithOneMipmap::GetBaseSize() const {
                 if (m_textureStorage.GetLevelCount() == 0) {
                     return {0, 0, 0};
@@ -361,64 +335,6 @@ namespace MobileGL {
 
             // TODO: add other texture types as needed
 
-        Bool SamplesAsIncompleteTexture(const ITextureObject* texture, const SamplerObject* effectiveSampler) {
-            const Bool mipmapped =
-                effectiveSampler != nullptr && effectiveSampler->GetMipmapMode() != SamplerMipmapMode::None;
-            return !IsMipmapCompleteForFilter(texture, mipmapped);
-        }
-
-        Bool IsMipmapCompleteForFilter(const ITextureObject* texture, Bool mipmapped) {
-            if (texture == nullptr) return true;
-            if (!texture->IsComplete()) return false;
-            if (!mipmapped) return true;
-
-            const auto* mipmapTexture = AsMipmapTexture(texture);
-            if (mipmapTexture == nullptr) return true; // no mip chain to be incomplete about
-
-            const UintVec2& levelRange = texture->GetLevelRange();
-            const Uint baseLevel = levelRange.x();
-            const Uint storedLevels = mipmapTexture->GetMipmapLevelCount();
-            if (baseLevel >= storedLevels) return false;
-
-            // An array texture's layer count is not a dimension of the image: it stays put all
-            // the way down the chain (GL 4.6 core 8.14.3). GetMipmapTexelSize reports it in the
-            // slot after the image's own dimensions.
-            const TextureTarget target = texture->GetTarget();
-            Int shrinkingComponents = 3;
-            if (target == TextureTarget::Texture1DArray) {
-                shrinkingComponents = 1;
-            } else if (target == TextureTarget::Texture2DArray || target == TextureTarget::TextureCubeMapArray) {
-                shrinkingComponents = 2;
-            }
-
-            for (const auto uploadTarget : texture->GetUploadTargets()) {
-                const IntVec3 baseSize = mipmapTexture->GetMipmapTexelSize(uploadTarget, baseLevel);
-                Int largest = 0;
-                for (Int component = 0; component < shrinkingComponents; ++component) {
-                    largest = std::max(largest, baseSize[component]);
-                }
-                if (largest <= 0) return false;
-
-                // p = log2 of the largest base dimension: the last level the chain needs
-                // before every dimension has reached 1. TEXTURE_MAX_LEVEL can cut it short.
-                Uint p = 0;
-                for (Int extent = largest; extent > 1; extent >>= 1) ++p;
-                const Uint lastLevel = std::min(baseLevel + p, levelRange.y());
-
-                for (Uint level = baseLevel; level <= lastLevel; ++level) {
-                    if (level >= storedLevels) return false;
-                    const IntVec3 actual = mipmapTexture->GetMipmapTexelSize(uploadTarget, level);
-                    for (Int component = 0; component < 3; ++component) {
-                        const Int expected = component < shrinkingComponents
-                            ? std::max(1, baseSize[component] >> (level - baseLevel))
-                            : baseSize[component];
-                        if (actual[component] != expected) return false;
-                    }
-                }
-            }
-            return true;
-        }
-
         } // namespace GLState
     } // namespace MG_State
 } // namespace MobileGL