[Fix]: compilation error after merge

Merge Perf/improvement1 to dev

.clang-tidy

@@ -14,7 +14,6 @@ bugprone-forwarding-reference-overload,
 bugprone-inaccurate-erase,
 bugprone-incorrect-roundings,
 bugprone-integer-division,
-bugprone-lambda-function-name,
 bugprone-macro-parentheses,
 bugprone-macro-repeated-side-effects,
 bugprone-misplaced-operator-in-strlen-in-alloc,
@@ -63,7 +62,6 @@ cert-str34-c,
 cppcoreguidelines-interfaces-global-init,
 cppcoreguidelines-narrowing-conversions,
 cppcoreguidelines-pro-type-member-init,
-cppcoreguidelines-pro-type-static-cast-downcast,
 cppcoreguidelines-slicing,
 google-default-arguments,
 google-runtime-operator,

.gitmodules

@@ -19,3 +19,9 @@
 [submodule "3rdparty/VulkanMemoryAllocator"]
 	path = 3rdparty/VulkanMemoryAllocator
 	url = https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.git
+[submodule "3rdparty/Vulkan-Utility-Libraries"]
+	path = 3rdparty/Vulkan-Utility-Libraries
+	url = https://github.com/KhronosGroup/Vulkan-Utility-Libraries.git
+[submodule "3rdparty/Vulkan-Headers"]
+	path = 3rdparty/Vulkan-Headers
+	url = https://github.com/KhronosGroup/Vulkan-Headers.git

CMakeLists.txt

@@ -108,6 +108,8 @@ set(SPIRV_CROSS_STATIC         ON  CACHE BOOL "Prefer static libs" FORCE)
 add_subdirectory(3rdparty/glslang)
 add_subdirectory(3rdparty/SPIRV-Cross)
 add_subdirectory(3rdparty/VulkanMemoryAllocator)
+add_subdirectory(3rdparty/Vulkan-Headers)
+add_subdirectory(3rdparty/Vulkan-Utility-Libraries)
 
 set(XXHASH_BUILD_XXHSUM OFF)
 option(BUILD_SHARED_LIBS OFF)
@@ -160,6 +162,8 @@ set(SOURCE_FILES
     MobileGL/MG_Util/Converters/GLToMG/RenderStateEnumConverter.cpp
     MobileGL/MG_Util/Converters/GLToMG/ProgramEnumConverter.cpp
     MobileGL/MG_Util/Converters/MGToMG/TextureEnumConverter.cpp
+    MobileGL/MG_Util/Converters/MGToVk/RenderStateEnumConverter.cpp
+    MobileGL/MG_Util/Converters/MGToVk/TextureEnumConverter.cpp
 
     MobileGL/MG_Util/Classifiers/TextureEnumClassifier.cpp
 
@@ -223,9 +227,10 @@ set(SOURCE_FILES
     MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateBuilder.cpp
     MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateFactory.cpp
     MobileGL/MG_Backend/DirectVulkan/Renderer/VkBufferObject.cpp
-    MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.cpp
+    MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.cpp
+    MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.cpp
+    MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.cpp
     MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.cpp
-    MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureSamplerManager.cpp
 
     MobileGL/MG_State/GLState/Core.cpp
     MobileGL/MG_State/EGLState/Core.cpp
@@ -262,6 +267,7 @@ set(MOBILEGL_LINK_LIBRARIES
         SPIRV-Tools
         xxHash::xxhash
         GPUOpen::VulkanMemoryAllocator
+        Vulkan::UtilityHeaders
 )
 
 set(MOBILEGL_COMPILE_DEF

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, 2, 0, "-dev", VersionType::Development};
+    inline const Version CoreVersion = {26, 3, 0, "-dev", VersionType::Development};
     inline const VersionStringFormatAttrib DefaultVersionStringFormatAttrib = {2, 2, 0, true, true};
     inline const Uint64 CacheVersion = 0;
 

MobileGL/Init.cpp

@@ -34,10 +34,10 @@ namespace MobileGL {
     void Destroy() {
         MGLOG_I("MobileGL closing...");
         glslang::FinalizeProcess();
-        delete MG_State::pGLContext;
-        delete MG_State::pEGLContext;
-        delete MG_Impl::GLImpl::TextureImpl::pProxyTextureManager;
-        delete MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo;
+        MG_State::pGLContext.reset();
+        MG_State::pEGLContext.reset();
+        MG_Impl::GLImpl::TextureImpl::pProxyTextureManager.reset();
+        MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo.reset();
         MG_Util::Debug::Close();
 
         // TODO: add and use Destroy functions for other subsystems

MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp

@@ -8,6 +8,7 @@
 
 #include "DirectGLES.h"
 #include "EGL/egl.h"
+#include "MG_Util/Types.h"
 #include "Utils.h"
 #include "Managers.h"
 #include <MG_Util/Converters/GLToMG/TextureEnumConverter.h>
@@ -45,7 +46,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
     namespace DebugImpl {
 #if MOBILEGL_LOG_ACTIVE_LEVEL <= MOBILEGL_LOG_LEVEL_DEBUG
-        void ErrorLopper::Loop(std::function<void(GLenum)> func) {
+        void ErrorLopper::Loop(const std::function<void(GLenum)>& func) {
             GLenum err = g_GLESFuncs.glGetError();
             while (err != GL_NO_ERROR) {
                 func(err);
@@ -68,14 +69,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
             Clear();
         }
 #else
-        void ErrorLopper::Loop(std::function<void(GLenum)> func) {}
+        void ErrorLopper::Loop(const std::function<void(GLenum)>& func) {}
         void ErrorLopper::Clear() {}
-        ErrorLopper::ErrorLopper() {}
-        ErrorLopper::~ErrorLopper() {}
+        ErrorLopper::ErrorLopper() = default;
+        ErrorLopper::~ErrorLopper() = default;
 #endif
 
 #if MOBILEGL_LOG_ACTIVE_LEVEL <= MOBILEGL_LOG_LEVEL_DEBUG
-        OpenGLScopeMarker::OpenGLScopeMarker(String scopeName) {
+        OpenGLScopeMarker::OpenGLScopeMarker(const String& scopeName) {
             g_GLESFuncs.glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 0, -1, scopeName.c_str());
         }
 
@@ -83,7 +84,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             g_GLESFuncs.glPopDebugGroup();
         }
 #else
-        OpenGLScopeMarker::OpenGLScopeMarker(String scopeName) {}
+        OpenGLScopeMarker::OpenGLScopeMarker(const String& scopeName) {}
 
         OpenGLScopeMarker::~OpenGLScopeMarker() {}
 #endif
@@ -92,31 +93,28 @@ namespace MobileGL::MG_Backend::DirectGLES {
     // TODO: deletion for deleted objects
 
     namespace BufferImpl {
-        void CreateAndSyncBufferObject(SharedPtr<MG_State::GLState::BufferObject>& bufferObject) {
+        void CreateAndSyncBufferObject(const SharedPtr<MG_State::GLState::BufferObject>& bufferObject) {
             if (!(bufferObject->GetChangeBits() & BufferChangeBits::DirtyBit)) return;
 
-            const auto& backendBufferIt = g_backendBufferObjects.find(bufferObject);
-            SharedPtr<BackendBufferObject> backendBufferObject;
-            if (backendBufferIt == g_backendBufferObjects.end()) {
-                backendBufferObject = MakeShared<BackendBufferObject>();
-                g_backendBufferObjects[bufferObject] = backendBufferObject;
-            } else {
-                backendBufferObject = backendBufferIt->second;
+            const auto& backendBufferIt = g_backendBufferObjects.find(bufferObject.get());
+            Bool exist = (backendBufferIt != g_backendBufferObjects.end());
+            auto& backendObj = exist ? backendBufferIt->second : g_backendBufferObjects.GetOrCreate(bufferObject);
+            if (!exist) {
+                backendObj = MakeShared<BackendBufferObject>();
             }
-            backendBufferObject->SyncToBackend(bufferObject);
+            backendObj->SyncToBackend(bufferObject);
         }
 
         void SyncNeccessaryBuffers(Bool includeIBO = false, Bool includeIndirectBuffer = false) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
+            g_backendBufferObjects.CollectGarbageIfNeeded();
+
             // All buffers we need are:
             //   1.VBO 2.IBO (if needed) 3.UBO 4.IndirectBuffer (if needed) 5.SSBO (TODO)
             // PBO is not needed since it should be handled in frontend
 
-            // static Vector<SharedPtr<MG_State::GLState::BufferObject>> buffersToSync;
-            // buffersToSync.clear();
-
             const auto& currentVAOObject = MG_State::pGLContext->GetBoundVertexArray();
             if (!currentVAOObject) {
                 MGLOG_E("No VAO is currently bound, cannot sync necessary buffers.");
@@ -126,7 +124,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             // VBO
             for (const auto& attrib : currentVAOObject->GetAllAttributes()) {
                 if (!attrib.Enabled) continue;
-                auto bufferObject = attrib.Buffer;
+                auto& bufferObject = attrib.Buffer;
                 if (bufferObject) {
                     CreateAndSyncBufferObject(bufferObject);
                 }
@@ -134,7 +132,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
             // IBO
             if (includeIBO) {
-                auto possibleIBO = currentVAOObject->GetIndexBufferBindingSlot().GetBoundObject();
+                auto& possibleIBO = currentVAOObject->GetIndexBufferBindingSlot().GetBoundObject();
                 if (possibleIBO) {
                     CreateAndSyncBufferObject(possibleIBO);
                 }
@@ -142,7 +140,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
             // Indirect Buffer Object
             if (includeIndirectBuffer) {
-                auto possibleIndirectBuffer =
+                auto& possibleIndirectBuffer =
                     MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
                 if (possibleIndirectBuffer) {
                     CreateAndSyncBufferObject(possibleIndirectBuffer);
@@ -153,7 +151,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             auto uboBindingPointCnt = MG_State::pGLContext->GetBufferBindingPointCount(BufferTarget::Uniform);
             for (SizeT i = 0; i < uboBindingPointCnt; ++i) {
                 auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::Uniform, i);
-                auto obj = point.GetBoundObject();
+                auto& obj = point.GetBoundObject();
                 if (obj) {
                     CreateAndSyncBufferObject(obj);
                 }
@@ -166,48 +164,49 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            auto currentVAOObject = MG_State::pGLContext->GetBoundVertexArray();
+            g_backendVertexArrayObjects.CollectGarbageIfNeeded();
+
+            auto& currentVAOObject = MG_State::pGLContext->GetBoundVertexArray();
             if (!currentVAOObject) {
                 MGLOG_E("No VAO is currently bound, cannot sync current VAO.");
                 return;
             }
 
-            const auto& backendVAOIt = g_backendVertexArrayObjects.find(currentVAOObject);
-            SharedPtr<VertexArrayImpl::BackendVertexArrayObject> backendVAOObject;
-            if (backendVAOIt == g_backendVertexArrayObjects.end()) {
-                backendVAOObject = MakeShared<VertexArrayImpl::BackendVertexArrayObject>();
-                g_backendVertexArrayObjects[currentVAOObject] = backendVAOObject;
-            } else {
-                backendVAOObject = backendVAOIt->second;
+            const auto& backendVAOIt = g_backendVertexArrayObjects.find(currentVAOObject.get());
+            Bool exist = (backendVAOIt != g_backendVertexArrayObjects.end());
+            auto& backendObj = exist ? backendVAOIt->second : g_backendVertexArrayObjects.GetOrCreate(currentVAOObject);
+            if (!exist) {
+                backendObj = MakeShared<VertexArrayImpl::BackendVertexArrayObject>();
             }
-            backendVAOObject->SyncToBackend(currentVAOObject);
+            backendObj->SyncToBackend(currentVAOObject);
         }
     } // namespace VertexArrayImpl
 
     namespace TextureImpl {
-        SharedPtr<BackendTextureObject> SyncTextureObjectToBackend(
-            SharedPtr<MG_State::GLState::ITextureObject>& textureObject) {
+        SharedPtr<BackendTextureObject>& SyncTextureObjectToBackend(
+            const SharedPtr<MG_State::GLState::ITextureObject>& textureObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            const auto& backendTextureIt = g_backendTextureObjects.find(textureObject);
-            SharedPtr<BackendTextureObject> backendTextureObject;
-            if (backendTextureIt == g_backendTextureObjects.end()) {
-                backendTextureObject = MakeShared<BackendTextureObject>();
-                g_backendTextureObjects[textureObject] = backendTextureObject;
-            } else {
-                backendTextureObject = backendTextureIt->second;
+            const auto& backendTextureIt = g_backendTextureObjects.find(textureObject.get());
+            Bool exist = (backendTextureIt != g_backendTextureObjects.end());
+            auto& backendObj = exist ? backendTextureIt->second : g_backendTextureObjects.GetOrCreate(textureObject);
+            if (!exist) {
+                backendObj = MakeShared<BackendTextureObject>();
             }
-            backendTextureObject->SyncTextureParamsToBackend(textureObject);
-            backendTextureObject->SyncBuiltinSamplerToBackend(textureObject);
-            backendTextureObject->SyncMipmapsToBackend(textureObject);
-            return backendTextureObject;
+            backendObj->SyncTextureParamsToBackend(textureObject);
+            backendObj->SyncBuiltinSamplerToBackend(textureObject);
+            backendObj->SyncMipmapsToBackend(textureObject);
+
+            return backendObj;
         }
 
         void SyncNeccessaryTextures() {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
+            g_backendTextureObjects.CollectGarbageIfNeeded();
+
             // All textures we need are:
             //   1. textures bound to texture units (TODO: only sync ones that are used in current program)
             //   2. textures used in current FBO
@@ -216,7 +215,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             for (int index = 0; index < MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS; ++index) {
                 auto& unit = MG_State::pGLContext->GetTextureUnitObject(index);
                 for (const auto& bindingSlot : unit.GetAllBindingSlots()) {
-                    auto textureObject = bindingSlot.GetBoundObject();
+                    auto& textureObject = bindingSlot.GetBoundObject();
                     if (textureObject) {
                         SyncTextureObjectToBackend(textureObject);
                     }
@@ -228,7 +227,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             if (currentFBO) {
                 for (const auto& attachment : currentFBO->GetAllAttachmentObjects()) {
                     if (!attachment.IsTexture()) continue;
-                    auto textureObject = attachment.GetTexture();
+                    auto& textureObject = attachment.GetTexture();
                     if (textureObject) {
                         SyncTextureObjectToBackend(textureObject);
                     }
@@ -242,16 +241,20 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
+            g_backendFramebufferObjects.CollectGarbageIfNeeded();
+            TextureImpl::g_backendTextureObjects.CollectGarbageIfNeeded();
+            RenderbufferImpl::g_backendRenderbufferObjects.CollectGarbageIfNeeded();
+
             const FramebufferTarget fboTargets[] = {FramebufferTarget::Draw, FramebufferTarget::Read};
 
             MG_State::GLState::FramebufferObject* lastUpdatedFBO = nullptr;
 
-            for (auto target : fboTargets) {
-                auto slot = MG_State::pGLContext->GetFramebufferBindingSlot(target);
+            for (auto& target : fboTargets) {
+                auto& slot = MG_State::pGLContext->GetFramebufferBindingSlot(target);
                 auto version = slot.GetVersion();
                 if (version == g_fboBindVersions[SizeT(target)]) continue;
 
-                auto currentFBO = slot.GetBoundObject();
+                auto& currentFBO = slot.GetBoundObject();
 
                 if (!currentFBO) {
                     MGLOG_E("No FBO is currently bound, cannot sync current FBO.");
@@ -263,21 +266,19 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     continue;
                 }
 
-                const auto& backendFBOIt = g_backendFramebufferObjects.find(currentFBO);
-                SharedPtr<BackendFramebufferObject> backendFBOObject;
-                if (backendFBOIt == g_backendFramebufferObjects.end()) {
-                    backendFBOObject = MakeShared<BackendFramebufferObject>();
-                    g_backendFramebufferObjects[currentFBO] = backendFBOObject;
-                } else {
-                    backendFBOObject = backendFBOIt->second;
-                }
-
                 if (currentFBO.get() == lastUpdatedFBO) {
                     MGLOG_D("Draw FBO and read FBO are the same, skipping sync.");
-                } else {
-                    backendFBOObject->SyncToBackend(currentFBO, target);
+                    continue;
                 }
 
+                const auto& backendFBOIt = g_backendFramebufferObjects.find(currentFBO.get());
+                Bool exist = (backendFBOIt != g_backendFramebufferObjects.end());
+                auto& backendObj = exist ? backendFBOIt->second : g_backendFramebufferObjects.GetOrCreate(currentFBO);
+                if (!exist) {
+                    backendObj = MakeShared<BackendFramebufferObject>();
+                }
+                backendObj->SyncToBackend(currentFBO, target);
+
                 lastUpdatedFBO = currentFBO.get();
             }
         }
@@ -466,21 +467,23 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            auto currentProgram = MG_State::pGLContext->GetCurrentProgram();
+            g_backendProgramObjects.CollectGarbageIfNeeded();
+            SamplerImpl::g_backendSamplerObjects.CollectGarbageIfNeeded();
+
+            auto& currentProgram = MG_State::pGLContext->GetCurrentProgram();
             if (!currentProgram || !currentProgram->GetLinkStatus()) {
                 g_GLESFuncs.glUseProgram(0);
                 return;
             }
-            const auto& backendProgramIt = g_backendProgramObjects.find(currentProgram);
-            SharedPtr<BackendProgramObjectImpl> backendProgram;
-            if (backendProgramIt == g_backendProgramObjects.end()) {
-                backendProgram = MakeShared<BackendProgramObjectImpl>();
-                g_backendProgramObjects[currentProgram] = backendProgram;
-                backendProgram->SyncToBackend(currentProgram);
+            const auto& backendProgramIt = g_backendProgramObjects.find(currentProgram.get());
+            Bool exist = (backendProgramIt != g_backendProgramObjects.end());
+            auto& backendObj = exist ? backendProgramIt->second : g_backendProgramObjects.GetOrCreate(currentProgram);
+            if (!exist) {
+                backendObj = MakeShared<BackendProgramObjectImpl>();
+                backendObj->SyncToBackend(currentProgram);
             } else {
-                backendProgram = backendProgramIt->second;
-                if (!backendProgram->GetBackendProgramId()) {
-                    backendProgram->SyncToBackend(currentProgram);
+                if (!backendObj->GetBackendProgramId()) {
+                    backendObj->SyncToBackend(currentProgram);
                 }
             }
         }
@@ -495,7 +498,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         const auto& currentFBO = slot.GetBoundObject();
         if (currentFBO && currentFBO != MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo->defaultFBO) {
-            const auto& backendFBOIt = FramebufferImpl::g_backendFramebufferObjects.find(currentFBO);
+            const auto& backendFBOIt = FramebufferImpl::g_backendFramebufferObjects.find(currentFBO.get());
             if (backendFBOIt != FramebufferImpl::g_backendFramebufferObjects.end()) {
                 backendFBOIt->second->Bind(target);
             } else {
@@ -528,7 +531,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #endif
             const auto& currentVAO = MG_State::pGLContext->GetBoundVertexArray();
             if (currentVAO) {
-                const auto& backendVAOIt = VertexArrayImpl::g_backendVertexArrayObjects.find(currentVAO);
+                const auto& backendVAOIt = VertexArrayImpl::g_backendVertexArrayObjects.find(currentVAO.get());
                 if (backendVAOIt != VertexArrayImpl::g_backendVertexArrayObjects.end()) {
                     backendVAOIt->second->Bind();
                 }
@@ -556,7 +559,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                 MG_Util::ConvertTextureTargetToString(target).c_str());
                         continue;
                     }
-                    const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
+                    const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
                     if (backendTextureIt == TextureImpl::g_backendTextureObjects.end()) continue;
 
                     GLenum targetGL = MG_Util::ConvertTextureTargetToGLEnum(target);
@@ -566,7 +569,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 // Bind sampler object if necessary
                 const auto& samplerObject = textureUnit.GetSamplerObject();
                 if (samplerObject) {
-                    const auto& backendSamplerIt = SamplerImpl::g_backendSamplerObjects.find(samplerObject);
+                    const auto& backendSamplerIt = SamplerImpl::g_backendSamplerObjects.find(samplerObject.get());
                     if (backendSamplerIt != SamplerImpl::g_backendSamplerObjects.end()) {
                         backendSamplerIt->second->Bind(unit);
                     }
@@ -581,7 +584,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedNC("BindCurrentProgram", TRACY_ZONECOLOR_BACKEND);
 #endif
-            const auto& backendProgramIt = PrgramImpl::g_backendProgramObjects.find(currentProgram);
+            const auto& backendProgramIt = PrgramImpl::g_backendProgramObjects.find(currentProgram.get());
             if (backendProgramIt != PrgramImpl::g_backendProgramObjects.end()) {
                 backendProgramIt->second->Use();
                 auto backendProgramId = backendProgramIt->second->GetBackendProgramId();
@@ -623,11 +626,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
                         // Connect buffer to backend binding point
                         auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::Uniform, binding);
-                        auto bufferObj = point.GetBoundObject();
+                        auto& bufferObj = point.GetBoundObject();
                         auto range = point.GetRange();
 
                         if (bufferObj) {
-                            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(bufferObj);
+                            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(bufferObj.get());
                             if (backendBufferIt != BufferImpl::g_backendBufferObjects.end()) {
                                 const auto& backendBufferObject = backendBufferIt->second;
                                 backendBufferObject->Bind(GL_UNIFORM_BUFFER);
@@ -635,9 +638,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                     g_GLESFuncs.glBindBufferBase(GL_UNIFORM_BUFFER, lastUBOBinding,
                                                                  backendBufferObject->GetBackendBufferId());
                                 } else {
-                                    g_GLESFuncs.glBindBufferRange(GL_UNIFORM_BUFFER, lastUBOBinding,
-                                                                  backendBufferObject->GetBackendBufferId(),
-                                                                  range.start, range.end - range.start);
+                                    g_GLESFuncs.glBindBufferRange(
+                                        GL_UNIFORM_BUFFER, lastUBOBinding, backendBufferObject->GetBackendBufferId(),
+                                        (GLintptr)range.start, (GLintptr)(range.end - range.start));
                                 }
                             } else {
                                 MGLOG_E("No backend buffer found for UBO binding, cannot bind UBO.");
@@ -660,18 +663,18 @@ namespace MobileGL::MG_Backend::DirectGLES {
                             backendProgramIt->second->GetBackendProgramId(), name.c_str());
                         g_GLESFuncs.glUniform1i(locAtBackend, unit);
 
-                        auto samplerObject = MG_State::pGLContext->GetTextureUnitObject(unit).GetSamplerObject();
+                        auto& samplerObject = MG_State::pGLContext->GetTextureUnitObject(unit).GetSamplerObject();
 
                         if (samplerObject) {
-                            const auto& backendSamplerIt = SamplerImpl::g_backendSamplerObjects.find(samplerObject);
-                            SharedPtr<SamplerImpl::BackendSamplerObject> backendSamplerObject;
-                            if (backendSamplerIt == SamplerImpl::g_backendSamplerObjects.end()) {
-                                backendSamplerObject = MakeShared<SamplerImpl::BackendSamplerObject>();
-                                SamplerImpl::g_backendSamplerObjects[samplerObject] = backendSamplerObject;
-                            } else {
-                                backendSamplerObject = backendSamplerIt->second;
+                            const auto& backendSamplerIt =
+                                SamplerImpl::g_backendSamplerObjects.find(samplerObject.get());
+                            Bool exist = (backendSamplerIt != SamplerImpl::g_backendSamplerObjects.end());
+                            auto& backendObj = exist ? backendSamplerIt->second
+                                                     : SamplerImpl::g_backendSamplerObjects.GetOrCreate(samplerObject);
+                            if (!exist) {
+                                backendObj = MakeShared<SamplerImpl::BackendSamplerObject>();
                             }
-                            backendSamplerObject->SyncToBackend(samplerObject);
+                            backendObj->SyncToBackend(samplerObject);
                         } else {
                             SamplerImpl::UnbindSampler(unit);
                         }
@@ -845,30 +848,29 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #if MOBILEGL_LOG_ACTIVE_LEVEL <= MOBILEGL_LOG_LEVEL_DEBUG && MOBILEGL_ENABLE_SCOPE_MARKER
         DebugImpl::OpenGLScopeMarker marker(__func__);
 #endif
-        DebugImpl::ErrorLopper errorLopper;
 
         TextureImpl::SyncNeccessaryTextures();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         FramebufferImpl::SyncCurrentFBO();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         RenderStateImpl::SyncRenderState();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
 
         BindCurrentFBO(FramebufferTarget::Draw);
         BindCurrentFBO(FramebufferTarget::Read);
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         MGLOG_D("ES %s(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)", __func__, srcX0, srcY0, srcX1, srcY1, dstX0, dstY0,
                 dstX1, dstY1, mask, MG_Util::ConvertGLEnumToString(filter).c_str());
         g_GLESFuncs.glBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
     }
@@ -895,15 +897,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
                         MG_Util::ConvertTextureTargetToString(textureTarget).c_str());
             }
 
-            const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
-            SharedPtr<TextureImpl::BackendTextureObject> backendTextureObject;
-            if (backendTextureIt == TextureImpl::g_backendTextureObjects.end()) {
-                backendTextureObject = MakeShared<TextureImpl::BackendTextureObject>();
-                TextureImpl::g_backendTextureObjects[textureObject] = backendTextureObject;
-            } else {
-                backendTextureObject = backendTextureIt->second;
+            const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
+            Bool exist = (backendTextureIt != TextureImpl::g_backendTextureObjects.end());
+            auto& backendObj =
+                exist ? backendTextureIt->second : TextureImpl::g_backendTextureObjects.GetOrCreate(textureObject);
+            if (!exist) {
+                backendObj = MakeShared<TextureImpl::BackendTextureObject>();
             }
-            backendTextureObject->Bind(target, unit);
+            backendObj->Bind(target, unit);
         }
         return true;
     }
@@ -953,15 +954,15 @@ namespace MobileGL::MG_Backend::DirectGLES {
         DebugImpl::ErrorLopper errorLopper;
         MGLOG_D("%s: Backend", __func__);
         TextureImpl::SyncNeccessaryTextures();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         FramebufferImpl::SyncCurrentFBO();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         RenderStateImpl::SyncRenderState();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         if (!UpdateTextureBindingAtTarget(target)) return;
@@ -969,10 +970,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
         // Bind necessary FBO and texture
         BindCurrentFBO(FramebufferTarget::Read);
         Uint activeTextureUnit = MG_State::pGLContext->GetActiveTextureUnit();
-        const auto& textureObject = MG_State::pGLContext->GetTextureUnitObject(activeTextureUnit)
+        const auto& textureObject = MG_State::pGLContext->GetTextureUnitObject((Int)activeTextureUnit)
                                         .GetBindingSlot(MG_Util::ConvertGLEnumToTextureTarget(target))
                                         .GetBoundObject();
-        const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
+        const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
         if (backendTextureIt == TextureImpl::g_backendTextureObjects.end()) {
             MGLOG_E("CopyTexSubImage2D: No backend texture found for texture %u.",
                     textureObject ? textureObject->GetExternalIndex() : 0);
@@ -998,19 +999,19 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         if (!isDepthFormat) {
             g_GLESFuncs.glCopyTexImage2D(target, level, internalformat, x, y, width, height, border);
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
         } else {
             MGLOG_D("%s: Backend depth", __func__);
             g_GLESFuncs.glTexImage2D(target, level, (GLint)internalformat, width, height, border, format, type,
                                      nullptr);
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
-            GLint currentTex = backendTextureIt->second->GetBackendTextureId();
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            auto currentTex = (GLint)backendTextureIt->second->GetBackendTextureId();
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
@@ -1026,7 +1027,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             g_GLESFuncs.glBlitFramebuffer(x, y, x + width, y + height, 0, 0, width, height,
                                           GL_DEPTH_BUFFER_BIT | (isStencilFormat ? GL_STENCIL_BUFFER_BIT : 0),
                                           GL_NEAREST);
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
         }
@@ -1041,15 +1042,15 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         MGLOG_D("%s: Backend", __func__);
         TextureImpl::SyncNeccessaryTextures();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         FramebufferImpl::SyncCurrentFBO();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         RenderStateImpl::SyncRenderState();
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
 
@@ -1057,11 +1058,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         // Bind necessary FBO and texture
         BindCurrentFBO(FramebufferTarget::Read);
-        Uint activeTextureUnit = MG_State::pGLContext->GetActiveTextureUnit();
+        auto activeTextureUnit = MG_State::pGLContext->GetActiveTextureUnit();
         const auto& textureObject = MG_State::pGLContext->GetTextureUnitObject(activeTextureUnit)
                                         .GetBindingSlot(MG_Util::ConvertGLEnumToTextureTarget(target))
                                         .GetBoundObject();
-        const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
+        const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
         if (backendTextureIt == TextureImpl::g_backendTextureObjects.end()) {
             MGLOG_E("CopyTexSubImage2D: No backend texture found for texture %u.",
                     textureObject ? textureObject->GetExternalIndex() : 0);
@@ -1069,12 +1070,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
         backendTextureIt->second->Bind(target, activeTextureUnit);
 
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         GLenum internalFormat;
         g_GLESFuncs.glGetTexLevelParameteriv(target, level, GL_TEXTURE_INTERNAL_FORMAT, (GLint*)&internalFormat);
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         auto mgInternalFormat = MG_Util::ConvertGLEnumToTextureInternalFormat(internalFormat);
@@ -1084,19 +1085,19 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         if (!isDepthFormat) {
             g_GLESFuncs.glCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height);
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
         } else {
             MGLOG_D("%s: Backend depth", __func__);
-            GLint currentTex = backendTextureIt->second->GetBackendTextureId();
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            auto currentTex = backendTextureIt->second->GetBackendTextureId();
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
             GLenum attachment = isStencilFormat ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT;
             TempFBOBinder tempFBOBinder(false);
             g_GLESFuncs.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, attachment, target, currentTex, level);
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
             if (g_GLESFuncs.glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
@@ -1107,7 +1108,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             g_GLESFuncs.glBlitFramebuffer(
                 x, y, x + width, y + height, xoffset, yoffset, xoffset + width, yoffset + height,
                 GL_DEPTH_BUFFER_BIT | (isStencilFormat ? GL_STENCIL_BUFFER_BIT : 0), GL_NEAREST);
-            errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
                 MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
         }
@@ -1120,8 +1121,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         auto unitIndex = MG_State::pGLContext->GetActiveTextureUnit();
         auto& unit = MG_State::pGLContext->GetTextureUnitObject(unitIndex);
         auto& slot = unit.GetBindingSlot(MG_Util::ConvertGLEnumToTextureTarget(target));
-        auto texture = slot.GetBoundObject();
-        auto backendTexture = TextureImpl::SyncTextureObjectToBackend(texture);
+        auto& texture = slot.GetBoundObject();
+        auto& backendTexture = TextureImpl::SyncTextureObjectToBackend(texture);
 
         backendTexture->Bind(target, unitIndex);
         g_GLESFuncs.glGenerateMipmap(target);
@@ -1184,7 +1185,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         PixelStoreParameters m_prevParams;
 
-        PixelStoreParameters QueryCurrentGLPixelStoreParams(Bool isUnpack) {
+        static PixelStoreParameters QueryCurrentGLPixelStoreParams(Bool isUnpack) {
             PixelStoreParameters p;
             if (!isUnpack) {
                 g_GLESFuncs.glGetIntegerv(GL_PACK_ALIGNMENT, (GLint*)&p.Alignment);
@@ -1214,7 +1215,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return p;
         }
 
-        void Sync(Bool isUnpack, const PixelStoreParameters& params) {
+        static void Sync(Bool isUnpack, const PixelStoreParameters& params) {
             if (!isUnpack) {
                 g_GLESFuncs.glPixelStorei(GL_PACK_ALIGNMENT, params.Alignment);
                 g_GLESFuncs.glPixelStorei(GL_PACK_ROW_LENGTH, params.RowLength);
@@ -1271,7 +1272,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         // Handle PBO
-        auto pixelPackBufferObject =
+        auto& pixelPackBufferObject =
             MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::PixelPack).GetBoundObject();
         Bool usePBO;
         GLuint prevPixelPackBuffer = 0;
@@ -1279,7 +1280,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             BufferImpl::CreateAndSyncBufferObject(pixelPackBufferObject);
             MGLOG_D("ReadPixels: Using PBO %u", pixelPackBufferObject->GetExternalIndex());
             usePBO = true;
-            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(pixelPackBufferObject);
+            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(pixelPackBufferObject.get());
 
             if (backendBufferIt == BufferImpl::g_backendBufferObjects.end()) {
                 MGLOG_E("ReadPixels: No backend buffer found for PBO %u.",
@@ -1299,8 +1300,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         if (usePBO) {
             // pull back to client memory if PBO is used
             MGLOG_D("ReadPixels: PBO used, mapping buffer to client memory");
-            GLvoid* pboMappedPtr = g_GLESFuncs.glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0,
-                                                                pixelPackBufferObject->GetSize(), GL_MAP_READ_BIT);
+            GLvoid* pboMappedPtr = g_GLESFuncs.glMapBufferRange(
+                GL_PIXEL_PACK_BUFFER, 0, (GLsizeiptr)pixelPackBufferObject->GetSize(), GL_MAP_READ_BIT);
             if (pboMappedPtr) {
                 MGLOG_D("ReadPixels: Copying data from PBO to client memory");
                 SizeT size = pixelPackBufferObject->GetSize();
@@ -1345,7 +1346,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         MGLOG_D("GetTexImage: SyncCurrentFBO()");
         FramebufferImpl::SyncCurrentFBO();
 
-        Uint activeTextureUnit = MG_State::pGLContext->GetActiveTextureUnit();
+        auto activeTextureUnit = MG_State::pGLContext->GetActiveTextureUnit();
         MGLOG_D("GetTexImage: active texture unit = %u", activeTextureUnit);
 
         const auto& textureObject = MG_State::pGLContext->GetTextureUnitObject(activeTextureUnit)
@@ -1355,7 +1356,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         MGLOG_D("GetTexImage: bound texture object = %p (name=%u)", textureObject.get(),
                 textureObject ? textureObject->GetExternalIndex() : 0);
 
-        const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
+        const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
 
         if (backendTextureIt == TextureImpl::g_backendTextureObjects.end()) {
             MGLOG_E("GetTexImage: No backend texture found for texture %u.",
@@ -1383,14 +1384,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return;
         }
 
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
 
         MGLOG_D("GetTexImage: Applying TempPixelStoreParameterSync (PACK)");
         TempPixelStoreParameterSync tempPackParamsSync(false);
 
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
 
@@ -1404,7 +1405,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         auto* textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
 
-        auto levelRange = textureMipmapObject->GetLevelRange();
+        auto& levelRange = textureMipmapObject->GetLevelRange();
         MGLOG_D("GetTexImage: mipmap level range = [%d, %d)", levelRange.x(), levelRange.y());
 
         if (level < levelRange.x() || level >= levelRange.y()) {
@@ -1421,7 +1422,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         MGLOG_D("GetTexImage: mip level %d size = %dx%d", level, size.x(), size.y());
 
         // Handle PBO
-        auto pixelPackBufferObject =
+        auto& pixelPackBufferObject =
             MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::PixelPack).GetBoundObject();
         Bool usePBO;
         GLuint prevPixelPackBuffer = 0;
@@ -1429,7 +1430,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             BufferImpl::CreateAndSyncBufferObject(pixelPackBufferObject);
             MGLOG_D("GetTexImage: Using PBO %u", pixelPackBufferObject->GetExternalIndex());
             usePBO = true;
-            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(pixelPackBufferObject);
+            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(pixelPackBufferObject.get());
             if (backendBufferIt == BufferImpl::g_backendBufferObjects.end()) {
                 MGLOG_E("GetTexImage: No backend buffer found for PBO %u.",
                         pixelPackBufferObject ? pixelPackBufferObject->GetExternalIndex() : 0);
@@ -1443,7 +1444,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             MGLOG_D("GetTexImage: Not using PBO");
         }
 
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         MGLOG_D("GetTexImage: glReadPixels(0, 0, %d, %d, %s, %s, %p)", size.x(), size.y(),
@@ -1451,14 +1452,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 pixels);
         g_GLESFuncs.glReadPixels(0, 0, size.x(), size.y(), esFormat, esType, pixels);
 
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         if (usePBO) {
             // pull back to client memory if PBO is used
             MGLOG_D("ReadPixels: PBO used, mapping buffer to client memory");
-            GLvoid* pboMappedPtr = g_GLESFuncs.glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0,
-                                                                pixelPackBufferObject->GetSize(), GL_MAP_READ_BIT);
+            GLvoid* pboMappedPtr = g_GLESFuncs.glMapBufferRange(
+                GL_PIXEL_PACK_BUFFER, 0, (GLsizeiptr)pixelPackBufferObject->GetSize(), GL_MAP_READ_BIT);
             if (pboMappedPtr) {
                 MGLOG_D("ReadPixels: Copying data from PBO to client memory");
                 SizeT size = pixelPackBufferObject->GetSize();
@@ -1479,7 +1480,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
+        DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__](auto err) {
             MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
         });
         MGLOG_D("GetTexImage: finished");

MobileGL/MG_Backend/DirectGLES/Managers.cpp

@@ -7,10 +7,6 @@
 // End of Source File Header
 
 #include "Managers.h"
-#include "MG_State/GLState/TextureState/TextureEnum.h"
-#include "MG_State/GLState/TextureState/TextureObject.h"
-#include "MG_State/GLState/TextureState/TextureState.h"
-#include "MG_Util/Converters/GLToMG/TextureEnumConverter.h"
 #include "Utils.h"
 #include "DirectGLES.h"
 
@@ -18,6 +14,7 @@
 #include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
 #include <MG_Util/Converters/MGToGL/DataTypeConverter.h>
 #include <MG_Util/Converters/MGToGL/BufferEnumConverter.h>
+#include <MG_Util/Converters/GLToMG/TextureEnumConverter.h>
 #include <MG_Util/Converters/MGToGL/ProgramEnumConverter.h>
 #include <MG_Util/Converters/MGToGL/TextureEnumConverter.h>
 #include <MG_Util/Converters/MGToStr/TextureEnumConverter.h>
@@ -44,7 +41,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        void BackendBufferObject::SyncToBackend(SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject) {
+        void BackendBufferObject::SyncToBackend(const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -105,7 +102,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         void BackendBufferObject::SyncToBackend_glBufferData(
-            SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject) {
+            const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -117,11 +114,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
             GLenum usage = MG_Util::ConvertBufferUsageToGLEnum(stateBufferObject->GetUsage());
 
             Bind();
-            g_GLESFuncs.glBufferData(TempBufferTarget, size, data, usage);
+            g_GLESFuncs.glBufferData(TempBufferTarget, (GLsizeiptr)size, data, usage);
         }
 
         void BackendBufferObject::SyncToBackend_glBufferSubData(
-            SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject) {
+            const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -130,7 +127,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
             const void* data = stateBufferObject->GetDataReadOnly()->data();
             // dirty range: [range.start, range.end)
-            auto ranges = stateBufferObject->GetDirtyRanges();
+            auto& ranges = stateBufferObject->GetDirtyRanges();
             if (ranges.empty()) {
                 MGLOG_D("No dirty range to sync for buffer with ID: %u", m_backendBufferId);
                 return;
@@ -138,20 +135,21 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
             for (const auto& range : ranges) {
                 Bind();
-                g_GLESFuncs.glBufferSubData(TempBufferTarget, range.start, range.end - range.start,
+                g_GLESFuncs.glBufferSubData(TempBufferTarget, (GLintptr)range.start,
+                                            (GLintptr)(range.end - range.start),
                                             reinterpret_cast<const char*>(data) + range.start);
             }
         }
 
         void BackendBufferObject::SyncToBackend_glMapBufferRange(
-            SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject, Bool invalidate, Bool unsynchronized) {
+            const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject, Bool invalidate, Bool unsynchronized) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
 
             MGLOG_D("Syncing buffer map (glMapBuffer) for object with ID : %u", m_backendBufferId);
             MGLOG_D("Mapping buffer with ID: %u", m_backendBufferId);
-            auto ranges = stateBufferObject->GetDirtyRanges();
+            auto& ranges = stateBufferObject->GetDirtyRanges();
             if (ranges.empty()) {
                 MGLOG_D("No dirty range to sync for buffer with ID: %u", m_backendBufferId);
                 return;
@@ -159,18 +157,18 @@ namespace MobileGL::MG_Backend::DirectGLES {
             SizeT minStart = ranges.GetOverallMinStart();
             SizeT maxEnd = ranges.GetOverallMaxEnd();
             Bind();
-            void* mappedData = g_GLESFuncs.glMapBufferRange(TempBufferTarget, minStart, maxEnd - minStart,
-                                                            (invalidate ? GL_MAP_INVALIDATE_RANGE_BIT : 0) |
-                                                                (unsynchronized ? GL_MAP_UNSYNCHRONIZED_BIT : 0) |
-                                                                GL_MAP_WRITE_BIT | GL_MAP_FLUSH_EXPLICIT_BIT);
+            void* mappedData = g_GLESFuncs.glMapBufferRange(
+                TempBufferTarget, (GLintptr)minStart, (GLintptr)(maxEnd - minStart),
+                (invalidate ? GL_MAP_INVALIDATE_RANGE_BIT : 0) | (unsynchronized ? GL_MAP_UNSYNCHRONIZED_BIT : 0) |
+                    GL_MAP_WRITE_BIT | GL_MAP_FLUSH_EXPLICIT_BIT);
             const void* data = stateBufferObject->GetDataReadOnly()->data();
             if (mappedData) {
                 MGLOG_D("Mapped buffer data successfully for object with ID: %u", m_backendBufferId);
                 Memcpy(mappedData, reinterpret_cast<const char*>(data) + minStart, maxEnd - minStart);
                 // Explicitly flush the dirty ranges
                 for (const auto& range : ranges) {
-                    g_GLESFuncs.glFlushMappedBufferRange(TempBufferTarget, range.start - minStart,
-                                                         range.end - range.start);
+                    g_GLESFuncs.glFlushMappedBufferRange(TempBufferTarget, (GLintptr)(range.start - minStart),
+                                                         (GLintptr)(range.end - range.start));
                 }
                 g_GLESFuncs.glUnmapBuffer(TempBufferTarget);
             } else {
@@ -191,7 +189,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             g_GLESFuncs.glBindBuffer(target, m_backendBufferId);
         }
 
-        UnorderedMap<SharedPtr<MG_State::GLState::BufferObject>, SharedPtr<BackendBufferObject>> g_backendBufferObjects;
+        StateBackendObjectRegistry<MG_State::GLState::BufferObject, BackendBufferObject> g_backendBufferObjects;
         BackendBufferObject* g_boundVertexBufferObject = nullptr;
     } // namespace BufferImpl
 
@@ -209,22 +207,21 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        void BackendVertexArrayObject::Bind() {
+        void BackendVertexArrayObject::Bind() const {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
             g_GLESFuncs.glBindVertexArray(m_backendVAOId);
         }
 
-        void BackendVertexArrayObject::BindAttributeBuffer(Uint index,
-                                                           const MG_State::GLState::VertexAttribute& attrib) {
+        inline void BindAttributeBuffer(const MG_State::GLState::VertexAttribute& attrib) {
             const auto& bufferObject = attrib.Buffer;
             if (!bufferObject) {
                 MGLOG_W("Attribute has no bound buffer, skipping.");
                 return;
             }
 
-            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(bufferObject);
+            const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(bufferObject.get());
             if (backendBufferIt == BufferImpl::g_backendBufferObjects.end()) {
                 MGLOG_E("No backend buffer found for attribute's buffer, cannot bind attribute.");
                 return;
@@ -234,7 +231,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             backendBufferObject->Bind(GL_ARRAY_BUFFER);
         }
 
-        void BackendVertexArrayObject::SyncToBackend(SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject) {
+        void BackendVertexArrayObject::SyncToBackend(
+            const SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -268,7 +266,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                        m_syncedAttributeVersions[attribIndex].BufferVersion;
                 if (!needsSyncFormat && !needsSyncBuffer) continue;
 
-                BindAttributeBuffer(attribIndex, attrib);
+                BindAttributeBuffer(attrib);
 
                 if (!attrib.IsInteger) {
                     g_GLESFuncs.glVertexAttribPointer(
@@ -289,7 +287,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             if (currentIndexBufferVersion != m_syncedIndexBufferVersion) {
                 const auto& indexBufferBinding = stateVAOObject->GetIndexBufferBindingSlot().GetBoundObject();
                 if (indexBufferBinding) {
-                    const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(indexBufferBinding);
+                    const auto& backendBufferIt = BufferImpl::g_backendBufferObjects.find(indexBufferBinding.get());
                     if (backendBufferIt != BufferImpl::g_backendBufferObjects.end()) {
                         const auto& backendBufferObject = backendBufferIt->second;
                         backendBufferObject->Bind(GL_ELEMENT_ARRAY_BUFFER);
@@ -303,7 +301,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             m_syncedAttributeVersions = allAttributeVersions;
         }
 
-        UnorderedMap<SharedPtr<MG_State::GLState::VertexArrayObject>, SharedPtr<BackendVertexArrayObject>>
+        StateBackendObjectRegistry<MG_State::GLState::VertexArrayObject, BackendVertexArrayObject>
             g_backendVertexArrayObjects;
     } // namespace VertexArrayImpl
 
@@ -336,7 +334,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             g_boundTexturesCache[unit][targetN] = this;
         }
 
-        Uint BackendTextureObject::GetBackendTextureId() {
+        Uint BackendTextureObject::GetBackendTextureId() const {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -344,7 +342,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         void BackendTextureObject::SyncMipmapsToBackend(
-            SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject) {
+            const SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject) {
             if (!stateTextureObject) {
                 MGLOG_E("State texture object is null, cannot sync to backend.");
                 return;
@@ -353,7 +351,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            DebugImpl::ErrorLopper errorLopper;
 
             MGLOG_D("Syncing texture mipmaps with backend ID %u to backend for state ID %u", m_backendTextureId,
                     stateTextureObject->GetExternalIndex());
@@ -381,7 +378,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
 
             Bind(target);
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error: %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
             const auto baseSize = stateTextureObject->GetBaseSize();
@@ -414,7 +411,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                                            &glFormat, &glType);
 
                     const auto& uploadTargets = textureMipmapObject->GetUploadTargets();
-                    for (auto uploadTarget : uploadTargets) {
+                    for (auto& uploadTarget : uploadTargets) {
                         for (SizeT level = 0; level < mipmapCount; ++level) {
                             auto levelTexelSize = textureMipmapObject->GetMipmapTexelSize(uploadTarget, level);
                             auto levelByteSize = textureMipmapObject->GetMipmapByteSize(uploadTarget, level);
@@ -429,22 +426,22 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                 levelTexelSize.x(), levelTexelSize.y(), levelTexelSize.z(), levelByteSize, pData,
                                 levelDirty ? "true" : "false");
 
-                            errorLopper.Clear();
+                            DebugImpl::ErrorLopper::Clear();
                             g_GLESFuncs.glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
                             auto textureTarget = stateTextureObject->GetTarget();
                             // TODO: handle more texture types
                             switch (textureTarget) {
                             case TextureTarget::Texture2D:
                             case TextureTarget::TextureCubeMap: {
-                                g_GLESFuncs.glTexImage2D(glUploadTarget, static_cast<GLint>(level), glInternalFormat,
-                                                         static_cast<GLsizei>(levelTexelSize.x()),
-                                                         static_cast<GLsizei>(levelTexelSize.y()), 0, glFormat, glType,
-                                                         pData);
+                                g_GLESFuncs.glTexImage2D(
+                                    glUploadTarget, static_cast<GLint>(level), (GLint)glInternalFormat,
+                                    static_cast<GLsizei>(levelTexelSize.x()), static_cast<GLsizei>(levelTexelSize.y()),
+                                    0, glFormat, glType, pData);
                                 break;
                             }
                             case TextureTarget::Texture3D: {
                                 g_GLESFuncs.glTexImage3D(
-                                    glUploadTarget, static_cast<GLint>(level), glInternalFormat,
+                                    glUploadTarget, static_cast<GLint>(level), (GLint)glInternalFormat,
                                     static_cast<GLsizei>(levelTexelSize.x()), static_cast<GLsizei>(levelTexelSize.y()),
                                     static_cast<GLsizei>(levelTexelSize.z()), 0, glFormat, glType, pData);
                                 break;
@@ -454,8 +451,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                         MG_Util::ConvertTextureTargetToString(textureTarget).c_str());
                             }
                             }
-                            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__, glUploadTarget,
-                                              glInternalFormat, glFormat, glType, pData](GLenum err) {
+                            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__,
+                                                          glUploadTarget, glInternalFormat, glFormat, glType,
+                                                          pData](GLenum err) {
                                 MGLOG_D("%s(%s:%d) ES error: %s. glTexImage*: target=%s, internalformat=%s, format=%s, "
                                         "type=%s, pixels=%p",
                                         func, file, line, MG_Util::ConvertGLEnumToString(err).c_str(),
@@ -478,7 +476,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     TextureImpl::GenerateTextureFormatInfo(textureMipmapObject->GetFormat(), &glInternalFormat,
                                                            &glFormat, &glType);
                     const auto& uploadTargets = textureMipmapObject->GetUploadTargets();
-                    for (auto uploadTarget : uploadTargets) {
+                    for (auto& uploadTarget : uploadTargets) {
                         for (SizeT level = 0; level < mipmapCount; ++level) {
                             if (!textureMipmapObject->IsStorageDirty(uploadTarget, level)) {
                                 continue;
@@ -499,10 +497,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
                             auto glUploadTarget = MG_Util::ConvertTextureUploadTargetToGLEnum(uploadTarget);
                             g_GLESFuncs.glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
-                            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
-                                MGLOG_D("%s(%s:%d) ES error: %s", func, file, line,
-                                        MG_Util::ConvertGLEnumToString(err).c_str());
-                            });
+                            DebugImpl::ErrorLopper::Loop(
+                                [file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+                                    MGLOG_D("%s(%s:%d) ES error: %s", func, file, line,
+                                            MG_Util::ConvertGLEnumToString(err).c_str());
+                                });
                             auto texelSize = textureMipmapObject->GetMipmapTexelSize(uploadTarget, level);
                             g_GLESFuncs.glTexSubImage2D(glUploadTarget, static_cast<GLint>(level), 0, 0,
                                                         static_cast<GLsizei>(texelSize.x()),
@@ -518,7 +517,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 auto* textureBufferObject =
                     static_cast<MG_State::GLState::TextureObjectBuffer*>(stateTextureObject.get());
                 auto& slot = textureBufferObject->GetBufferBindingSlot();
-                auto buffer = slot.GetBoundObject();
+                auto& buffer = slot.GetBoundObject();
                 auto bufferIndex = buffer->GetExternalIndex();
                 currentTextureInfo.bufferExternalIndex = bufferIndex;
 
@@ -530,10 +529,13 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 // Need to sync texture buffer if not synced yet
                 auto& backendBuffers = BufferImpl::g_backendBufferObjects;
                 SharedPtr<BufferImpl::BackendBufferObject> backendBufferObject;
-                const auto& backendBufferIt = backendBuffers.find(buffer);
+                const auto& backendBufferIt = backendBuffers.find(buffer.get());
                 if (backendBufferIt == backendBuffers.end()) {
-                    backendBufferObject = MakeShared<BufferImpl::BackendBufferObject>();
-                    backendBuffers[buffer] = backendBufferObject;
+                    auto& backendBufferSlot = backendBuffers.GetOrCreate(buffer);
+                    if (!backendBufferSlot) {
+                        backendBufferSlot = MakeShared<BufferImpl::BackendBufferObject>();
+                    }
+                    backendBufferObject = backendBufferSlot;
                 } else {
                     backendBufferObject = backendBufferIt->second;
                 }
@@ -553,7 +555,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 THROW_UNIMPL_EXCEPTION;
             }
 
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error: %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
@@ -561,11 +563,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         void BackendTextureObject::SyncBuiltinSamplerToBackend(
-            SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject) {
+            const SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            DebugImpl::ErrorLopper errorLopper;
+
             if (!stateTextureObject) {
                 MGLOG_E("State texture object is null, cannot sync to backend.");
                 return;
@@ -594,7 +596,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
 
             Bind(target);
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error: %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
@@ -607,28 +609,29 @@ namespace MobileGL::MG_Backend::DirectGLES {
         g_GLESFuncs.glTexParameteri(target, glName,                                                                    \
                                     MG_Util::ConvertSampler##type##ToGLEnum(samplerParams.internalName));              \
         m_cacheSamplerParameters.internalName = samplerParams.internalName;                                            \
-        errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__,                                           \
-                          t = MG_Util::ConvertSampler##type##ToGLEnum(samplerParams.internalName)](GLenum err) {       \
-            MGLOG_D("%s(%s:%d) ES error %s, GL_TEXTURE_MIN_FILTER = %s", func, file, line,                             \
-                    MG_Util::ConvertGLEnumToString(err).c_str(), MG_Util::ConvertGLEnumToString(t).c_str());           \
-        });                                                                                                            \
+        DebugImpl::ErrorLopper::Loop(                                                                                  \
+            [file = __FILE__, line = __LINE__, func = __func__,                                                        \
+             t = MG_Util::ConvertSampler##type##ToGLEnum(samplerParams.internalName)](GLenum err) {                    \
+                MGLOG_D("%s(%s:%d) ES error %s, GL_TEXTURE_MIN_FILTER = %s", func, file, line,                         \
+                        MG_Util::ConvertGLEnumToString(err).c_str(), MG_Util::ConvertGLEnumToString(t).c_str());       \
+            });                                                                                                        \
     }
 
             if (m_cacheSamplerParameters.minFilter != samplerParams.minFilter ||
                 m_cacheSamplerParameters.mipmapMode != samplerParams.mipmapMode) {
-                g_GLESFuncs.glTexParameteri(
-                    target, GL_TEXTURE_MIN_FILTER,
-                    MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.minFilter, samplerParams.mipmapMode));
+                g_GLESFuncs.glTexParameteri(target, GL_TEXTURE_MIN_FILTER,
+                                            (GLint)MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.minFilter,
+                                                                                             samplerParams.mipmapMode));
                 m_cacheSamplerParameters.minFilter = samplerParams.minFilter;
                 m_cacheSamplerParameters.mipmapMode = samplerParams.mipmapMode;
             }
             if (m_cacheSamplerParameters.magFilter != samplerParams.magFilter) {
                 g_GLESFuncs.glTexParameteri(
                     target, GL_TEXTURE_MAG_FILTER,
-                    MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.magFilter, SamplerMipmapMode::None));
+                    (GLint)MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.magFilter, SamplerMipmapMode::None));
                 m_cacheSamplerParameters.magFilter = samplerParams.magFilter;
             }
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
@@ -645,18 +648,18 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 g_GLESFuncs.glTexParameterf(target, GL_TEXTURE_MAX_LOD, samplerParams.maxLod);
                 m_cacheSamplerParameters.maxLod = samplerParams.maxLod;
             }
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 #undef SYNC_TEX_SAMPLER_PARAM_IF_CHANGED
         }
 
         void BackendTextureObject::SyncTextureParamsToBackend(
-            SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject) {
+            const SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
-            DebugImpl::ErrorLopper errorLopper;
+
             if (!stateTextureObject) {
                 MGLOG_E("State texture object is null, cannot sync to backend.");
                 return;
@@ -683,7 +686,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
 
             Bind(target);
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error: %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
@@ -696,14 +699,14 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 g_GLESFuncs.glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, static_cast<GLint>(levelRange.x()));
                 m_cacheLodRange.x() = levelRange.x();
             }
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
             if (m_cacheLodRange.y() != levelRange.y()) {
                 g_GLESFuncs.glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, static_cast<GLint>(levelRange.y()));
                 m_cacheLodRange.y() = levelRange.y();
             }
-            errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+            DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                 MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
             });
 
@@ -720,7 +723,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 SYNC_TEX_SWIZZLE_PARAM_IF_CHANGED(a(), GL_TEXTURE_SWIZZLE_A);
 #undef SYNC_TEX_SWIZZLE_PARAM_IF_CHANGED
                 m_cacheSwizzleParams = swizzleParams;
-                errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+                DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                     MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
                 });
             }
@@ -730,7 +733,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 GLfloat borderColorArray[4] = {borderColor.x(), borderColor.y(), borderColor.z(), borderColor.w()};
                 g_GLESFuncs.glTexParameterfv(target, GL_TEXTURE_BORDER_COLOR, borderColorArray);
                 m_cacheBorderColor = borderColor;
-                errorLopper.Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
+                DebugImpl::ErrorLopper::Loop([file = __FILE__, line = __LINE__, func = __func__](GLenum err) {
                     MGLOG_D("%s(%s:%d) ES error %s", func, file, line, MG_Util::ConvertGLEnumToString(err).c_str());
                 });
             }
@@ -760,8 +763,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         Array<Array<BackendTextureObject*, (SizeT)TextureTarget::TextureTargetCount>,
               MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS>
             g_boundTexturesCache;
-        UnorderedMap<SharedPtr<MG_State::GLState::ITextureObject>, SharedPtr<BackendTextureObject>>
-            g_backendTextureObjects;
+        StateBackendObjectRegistry<MG_State::GLState::ITextureObject, BackendTextureObject> g_backendTextureObjects;
     } // namespace TextureImpl
 
     namespace FramebufferImpl {
@@ -778,7 +780,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        void BackendFramebufferObject::Bind(FramebufferTarget target) {
+        void BackendFramebufferObject::Bind(FramebufferTarget target) const {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -788,12 +790,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 g_GLESFuncs.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_backendFBOId);
         }
 
-        Bool BackendFramebufferObject::SyncAttachmentObject(
-            GLenum glFBOTarget, const MG_State::GLState::FramebufferAttachmentObject& attachmentObject,
-            GLenum glBackendAttachment) {
+        static Bool SyncAttachmentObject(GLenum glFBOTarget,
+                                         const MG_State::GLState::FramebufferAttachmentObject& attachmentObject,
+                                         GLenum glBackendAttachment) {
             if (attachmentObject.IsTexture()) {
                 const auto& textureObject = attachmentObject.GetTexture();
-                const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
+                const auto& backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
                 if (backendTextureIt == TextureImpl::g_backendTextureObjects.end()) {
                     MGLOG_E("%s: No backend texture found for FBO attachment, cannot bind texture.", __func__);
                     return false;
@@ -807,11 +809,15 @@ namespace MobileGL::MG_Backend::DirectGLES {
             } else if (attachmentObject.IsRenderbuffer()) {
                 const auto& renderbufferObject = attachmentObject.GetRenderbuffer();
                 const auto& backendRenderbufferIt =
-                    RenderbufferImpl::g_backendRenderbufferObjects.find(renderbufferObject);
+                    RenderbufferImpl::g_backendRenderbufferObjects.find(renderbufferObject.get());
                 SharedPtr<RenderbufferImpl::BackendRenderbufferObject> backendRenderbufferObject;
                 if (backendRenderbufferIt == RenderbufferImpl::g_backendRenderbufferObjects.end()) {
-                    backendRenderbufferObject = MakeShared<RenderbufferImpl::BackendRenderbufferObject>();
-                    RenderbufferImpl::g_backendRenderbufferObjects[renderbufferObject] = backendRenderbufferObject;
+                    auto& backendRenderbufferSlot =
+                        RenderbufferImpl::g_backendRenderbufferObjects.GetOrCreate(renderbufferObject);
+                    if (!backendRenderbufferSlot) {
+                        backendRenderbufferSlot = MakeShared<RenderbufferImpl::BackendRenderbufferObject>();
+                    }
+                    backendRenderbufferObject = backendRenderbufferSlot;
                 } else {
                     backendRenderbufferObject = backendRenderbufferIt->second;
                 }
@@ -824,8 +830,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return true;
         }
 
-        void BackendFramebufferObject::SyncToBackend(SharedPtr<MG_State::GLState::FramebufferObject>& stateFBOObject,
-                                                     FramebufferTarget asTarget) {
+        void BackendFramebufferObject::SyncToBackend(
+            const SharedPtr<MG_State::GLState::FramebufferObject>& stateFBOObject, FramebufferTarget asTarget) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -853,7 +859,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 std::fill(m_backendDrawBuffers, m_backendDrawBuffers + FramebufferObject::MAX_DRAW_BUFFERS, GL_NONE);
                 int nEffectiveBuffers = 0;
                 for (GLint i = 0; i < FramebufferObject::MAX_DRAW_BUFFERS; ++i) {
-                    auto frontendBuf = stateDrawBuffers[i];
+                    auto& frontendBuf = stateDrawBuffers[i];
                     if (frontendBuf == FramebufferAttachmentType::None) {
                         m_backendDrawBuffers[i] = GL_NONE;
                         continue;
@@ -892,7 +898,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             const auto& attachmentVersions = stateFBOObject->GetAllFramebufferAttachmentVersions();
             for (SizeT i = 0; i < attachments.size(); ++i) {
                 const auto& attachmentObject = attachments[i];
-                FramebufferAttachmentType frontendType = static_cast<FramebufferAttachmentType>(i);
+                auto frontendType = static_cast<FramebufferAttachmentType>(i);
                 GLenum glBackendAttachment = GL_NONE;
                 if (frontendType >= FramebufferAttachmentType::Color0 &&
                     frontendType <= FramebufferAttachmentType::Color31)
@@ -928,7 +934,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     // Verify that the backend object's name and parameters match the frontend attachment state
                     if (attachmentObject.IsTexture()) {
                         const auto& textureObject = attachmentObject.GetTexture();
-                        auto backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject);
+                        auto backendTextureIt = TextureImpl::g_backendTextureObjects.find(textureObject.get());
                         MOBILEGL_ASSERT(backendTextureIt != TextureImpl::g_backendTextureObjects.end(),
                                         "No backend texture found while framebuffer reports texture attachment.");
                         GLuint backendTexId = backendTextureIt->second->GetBackendTextureId();
@@ -944,7 +950,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                         "Attachment texture level mismatch between GLES and state object.");
                     } else if (attachmentObject.IsRenderbuffer()) {
                         const auto& renderbufferObject = attachmentObject.GetRenderbuffer();
-                        auto backendRboIt = RenderbufferImpl::g_backendRenderbufferObjects.find(renderbufferObject);
+                        auto backendRboIt =
+                            RenderbufferImpl::g_backendRenderbufferObjects.find(renderbufferObject.get());
                         MOBILEGL_ASSERT(
                             backendRboIt != RenderbufferImpl::g_backendRenderbufferObjects.end(),
                             "No backend renderbuffer found while framebuffer reports renderbuffer attachment.");
@@ -975,14 +982,13 @@ namespace MobileGL::MG_Backend::DirectGLES {
             return glBackendReadBuffer;
         }
 
-        UnorderedMap<SharedPtr<MG_State::GLState::FramebufferObject>, SharedPtr<BackendFramebufferObject>>
+        StateBackendObjectRegistry<MG_State::GLState::FramebufferObject, BackendFramebufferObject>
             g_backendFramebufferObjects;
         Array<Uint16, SizeT(FramebufferTarget::FramebufferTargetCount)> g_fboBindVersions = {0};
     } // namespace FramebufferImpl
 
     namespace PrgramImpl {
-        UnorderedMap<SharedPtr<MG_State::GLState::ProgramObject>, SharedPtr<BackendProgramObjectImpl>>
-            g_backendProgramObjects;
+        StateBackendObjectRegistry<MG_State::GLState::ProgramObject, BackendProgramObjectImpl> g_backendProgramObjects;
 
         BackendProgramObjectImpl::BackendProgramObjectImpl() {
 #ifdef TRACY_ENABLE
@@ -1008,7 +1014,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        void BackendProgramObjectImpl::SyncToBackend(SharedPtr<MG_State::GLState::ProgramObject>& stateProgramObject) {
+        void BackendProgramObjectImpl::SyncToBackend(
+            const SharedPtr<MG_State::GLState::ProgramObject>& stateProgramObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -1161,7 +1168,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             MGLOG_D("Program sync completed. backend ID %u", m_backendProgramId);
         }
 
-        void BackendProgramObjectImpl::Use() {
+        void BackendProgramObjectImpl::Use() const {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -1184,7 +1191,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        void BackendSamplerObject::SyncToBackend(SharedPtr<MG_State::GLState::SamplerObject>& stateSamplerObject) {
+        void BackendSamplerObject::SyncToBackend(
+            const SharedPtr<MG_State::GLState::SamplerObject>& stateSamplerObject) {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -1210,22 +1218,22 @@ namespace MobileGL::MG_Backend::DirectGLES {
 #define SYNC_SAMPLER_PARAM_IF_CHANGED(internalName, glName, type)                                                      \
     if (m_cacheSamplerParameters.internalName != samplerParams.internalName) {                                         \
         g_GLESFuncs.glSamplerParameteri(m_backendSamplerId, glName,                                                    \
-                                        MG_Util::ConvertSampler##type##ToGLEnum(samplerParams.internalName));          \
+                                        (GLint)MG_Util::ConvertSampler##type##ToGLEnum(samplerParams.internalName));   \
         m_cacheSamplerParameters.internalName = samplerParams.internalName;                                            \
     }
 
             if (m_cacheSamplerParameters.minFilter != samplerParams.minFilter ||
                 m_cacheSamplerParameters.mipmapMode != samplerParams.mipmapMode) {
-                g_GLESFuncs.glSamplerParameteri(
-                    m_backendSamplerId, GL_TEXTURE_MIN_FILTER,
-                    MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.minFilter, samplerParams.mipmapMode));
+                g_GLESFuncs.glSamplerParameteri(m_backendSamplerId, GL_TEXTURE_MIN_FILTER,
+                                                (GLint)MG_Util::ConvertSamplerFilterModeToGLEnum(
+                                                    samplerParams.minFilter, samplerParams.mipmapMode));
                 m_cacheSamplerParameters.minFilter = samplerParams.minFilter;
                 m_cacheSamplerParameters.mipmapMode = samplerParams.mipmapMode;
             }
             if (m_cacheSamplerParameters.magFilter != samplerParams.magFilter) {
                 g_GLESFuncs.glSamplerParameteri(
                     m_backendSamplerId, GL_TEXTURE_MAG_FILTER,
-                    MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.magFilter, SamplerMipmapMode::None));
+                    (GLint)MG_Util::ConvertSamplerFilterModeToGLEnum(samplerParams.magFilter, SamplerMipmapMode::None));
                 m_cacheSamplerParameters.magFilter = samplerParams.magFilter;
             }
 
@@ -1256,7 +1264,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             g_boundSamplersCache[unit] = this;
         }
 
-        Uint BackendSamplerObject::GetBackendSamplerId() {
+        Uint BackendSamplerObject::GetBackendSamplerId() const {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -1271,8 +1279,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         }
 
         Array<BackendSamplerObject*, MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS> g_boundSamplersCache;
-        UnorderedMap<SharedPtr<MG_State::GLState::SamplerObject>, SharedPtr<BackendSamplerObject>>
-            g_backendSamplerObjects;
+        StateBackendObjectRegistry<MG_State::GLState::SamplerObject, BackendSamplerObject> g_backendSamplerObjects;
     } // namespace SamplerImpl
 
     namespace RenderbufferImpl {
@@ -1287,7 +1294,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             }
         }
 
-        void BackendRenderbufferObject::Bind() {
+        void BackendRenderbufferObject::Bind() const {
 #ifdef TRACY_ENABLE
             ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
 #endif
@@ -1334,9 +1341,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             MGLOG_D("RBO %u sync completed. backend ID %u", stateRBOObject->GetExternalIndex(), m_backendRBOId);
         }
 
-        UnorderedMap<SharedPtr<MG_State::GLState::RenderbufferObject>, SharedPtr<BackendRenderbufferObject>>
+        StateBackendObjectRegistry<MG_State::GLState::RenderbufferObject, BackendRenderbufferObject>
             g_backendRenderbufferObjects;
     } // namespace RenderbufferImpl
-
-    namespace Utils {} // namespace Utils
 } // namespace MobileGL::MG_Backend::DirectGLES

MobileGL/MG_Backend/DirectGLES/Managers.h

@@ -15,19 +15,113 @@
 #include <MG_State/GLState/Core.h>
 
 namespace MobileGL::MG_Backend::DirectGLES {
+    template <typename StateObject, typename BackendObject>
+    class StateBackendObjectRegistry {
+    public:
+        using StatePtr = SharedPtr<StateObject>;
+        using StateWeakPtr = std::weak_ptr<StateObject>;
+        using BackendPtr = SharedPtr<BackendObject>;
+        using BackendMap = UnorderedMap<StateObject*, BackendPtr>;
+        using StateRefMap = UnorderedMap<StateObject*, StateWeakPtr>;
+        using iterator = typename BackendMap::iterator;
+        using const_iterator = typename BackendMap::const_iterator;
+
+        BackendPtr& GetOrCreate(const StatePtr& stateObj) {
+            MOBILEGL_ASSERT(stateObj != nullptr, "State object must not be null");
+
+            auto* key = stateObj.get();
+            auto trackedStateIt = m_stateRefs.find(key);
+            if (trackedStateIt != m_stateRefs.end() && trackedStateIt->second.expired()) {
+                EraseByKey(key);
+            }
+            m_stateRefs[key] = stateObj;
+            return m_backendObjects[key];
+        }
+
+        iterator find(StateObject* stateObj) {
+            if (!IsAlive(stateObj)) {
+                EraseByKey(stateObj);
+                return m_backendObjects.end();
+            }
+            return m_backendObjects.find(stateObj);
+        }
+
+        const_iterator find(StateObject* stateObj) const {
+            return const_cast<StateBackendObjectRegistry*>(this)->find(stateObj);
+        }
+
+        iterator end() { return m_backendObjects.end(); }
+        const_iterator end() const { return m_backendObjects.end(); }
+
+        void CollectGarbageIfNeeded() {
+            ++m_gcTick;
+            if (m_gcTick < kGCInterval) {
+                return;
+            }
+            CollectGarbage();
+            m_gcTick = 0;
+        }
+
+        void CollectGarbageNow() { CollectGarbage(); }
+
+    private:
+        bool IsAlive(StateObject* stateObj) const {
+            const auto trackedStateIt = m_stateRefs.find(stateObj);
+            if (trackedStateIt == m_stateRefs.end()) {
+                return false;
+            }
+            return !trackedStateIt->second.expired();
+        }
+
+        void EraseByKey(StateObject* stateObj) {
+            m_stateRefs.erase(stateObj);
+            m_backendObjects.erase(stateObj);
+        }
+
+        void CollectGarbage() {
+            if (m_isCollecting) {
+                return;
+            }
+
+            m_isCollecting = true;
+
+            Vector<StateObject*> staleKeys;
+            staleKeys.reserve(m_stateRefs.size());
+            for (const auto& [stateKey, stateWeakRef] : m_stateRefs) {
+                if (stateWeakRef.expired()) {
+                    staleKeys.push_back(stateKey);
+                }
+            }
+
+            for (auto* stateKey : staleKeys) {
+                m_stateRefs.erase(stateKey);
+                m_backendObjects.erase(stateKey);
+            }
+
+            m_isCollecting = false;
+        }
+
+    private:
+        static constexpr Uint32 kGCInterval = 1024;
+        StateRefMap m_stateRefs;
+        BackendMap m_backendObjects;
+        Uint32 m_gcTick = 0;
+        Bool m_isCollecting = false;
+    };
+
     namespace BufferImpl {
         const GLenum TempBufferTarget = GL_ARRAY_BUFFER;
         class BackendBufferObject {
         public:
             BackendBufferObject();
-            void SyncToBackend(SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject);
-            Uint GetBackendBufferId() { return m_backendBufferId; }
+            void SyncToBackend(const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject);
+            Uint GetBackendBufferId() const { return m_backendBufferId; }
             void Bind(GLenum target = TempBufferTarget);
 
         private:
-            void SyncToBackend_glBufferData(SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject);
-            void SyncToBackend_glBufferSubData(SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject);
-            void SyncToBackend_glMapBufferRange(SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject,
+            void SyncToBackend_glBufferData(const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject);
+            void SyncToBackend_glBufferSubData(const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject);
+            void SyncToBackend_glMapBufferRange(const SharedPtr<MG_State::GLState::BufferObject>& stateBufferObject,
                                                 Bool invalidate = true, Bool unsynchronized = true);
 
             Uint m_backendBufferId = 0;
@@ -36,21 +130,18 @@ namespace MobileGL::MG_Backend::DirectGLES {
         };
 
         extern BackendBufferObject* g_boundVertexBufferObject;
-        extern UnorderedMap<SharedPtr<MG_State::GLState::BufferObject>, SharedPtr<BackendBufferObject>>
-            g_backendBufferObjects;
+        extern StateBackendObjectRegistry<MG_State::GLState::BufferObject, BackendBufferObject> g_backendBufferObjects;
     } // namespace BufferImpl
 
     namespace VertexArrayImpl {
         class BackendVertexArrayObject {
         public:
             BackendVertexArrayObject();
-            void SyncToBackend(SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject);
-            Uint GetBackendVertexArrayId() { return m_backendVAOId; }
-            void Bind();
+            void SyncToBackend(const SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject);
+            Uint GetBackendVertexArrayId() const { return m_backendVAOId; }
+            void Bind() const;
 
         private:
-            void BindAttributeBuffer(Uint index, const MG_State::GLState::VertexAttribute& attrib);
-
             Uint m_backendVAOId = 0;
             Bool m_isInitialized = false;
             Uint16 m_syncedIndexBufferVersion = 0;
@@ -58,7 +149,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 m_syncedAttributeVersions;
         };
 
-        extern UnorderedMap<SharedPtr<MG_State::GLState::VertexArrayObject>, SharedPtr<BackendVertexArrayObject>>
+        extern StateBackendObjectRegistry<MG_State::GLState::VertexArrayObject, BackendVertexArrayObject>
             g_backendVertexArrayObjects;
     } // namespace VertexArrayImpl
 
@@ -92,11 +183,11 @@ namespace MobileGL::MG_Backend::DirectGLES {
         class BackendTextureObject {
         public:
             BackendTextureObject();
-            void SyncMipmapsToBackend(SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject);
-            void SyncBuiltinSamplerToBackend(SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject);
-            void SyncTextureParamsToBackend(SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject);
+            void SyncMipmapsToBackend(const SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject);
+            void SyncBuiltinSamplerToBackend(const SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject);
+            void SyncTextureParamsToBackend(const SharedPtr<MG_State::GLState::ITextureObject>& stateTextureObject);
             void Bind(GLenum target, Uint unit = TempTextureUnit);
-            Uint GetBackendTextureId();
+            Uint GetBackendTextureId() const;
 
         private:
             Uint m_backendTextureId = 0;
@@ -113,7 +204,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         void ActivateTextureUnit(Uint unit);
         void UnbindTexture(Uint unit, GLenum target);
-        extern UnorderedMap<SharedPtr<MG_State::GLState::ITextureObject>, SharedPtr<BackendTextureObject>>
+        extern StateBackendObjectRegistry<MG_State::GLState::ITextureObject, BackendTextureObject>
             g_backendTextureObjects;
         extern Array<Array<BackendTextureObject*, (SizeT)TextureTarget::TextureTargetCount>,
                      MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS>
@@ -125,13 +216,10 @@ namespace MobileGL::MG_Backend::DirectGLES {
         class BackendFramebufferObject {
         public:
             BackendFramebufferObject();
-            void SyncToBackend(SharedPtr<MG_State::GLState::FramebufferObject>& stateFBOObject,
+            void SyncToBackend(const SharedPtr<MG_State::GLState::FramebufferObject>& stateFBOObject,
                                FramebufferTarget asTarget);
-            Uint GetBackendFramebufferId() { return m_backendFBOId; }
-            void Bind(FramebufferTarget target);
-            bool SyncAttachmentObject(GLenum glFBOTarget,
-                                      const MG_State::GLState::FramebufferAttachmentObject& attachmentObject,
-                                      GLenum glBackendAttachment);
+            Uint GetBackendFramebufferId() const { return m_backendFBOId; }
+            void Bind(FramebufferTarget target) const;
             //            FramebufferAttachmentType GetCompactedAttachmentTypeAtDrawBufferIndex(Int index);
             GLenum GetBackendAttachmentType(FramebufferAttachmentType frontendAtt) const;
 
@@ -159,7 +247,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             FramebufferObject::FramebufferAttachmentVersionArray m_syncedFrontendAttachmentVersions = {0};
         };
 
-        extern UnorderedMap<SharedPtr<MG_State::GLState::FramebufferObject>, SharedPtr<BackendFramebufferObject>>
+        extern StateBackendObjectRegistry<MG_State::GLState::FramebufferObject, BackendFramebufferObject>
             g_backendFramebufferObjects;
         extern Array<Uint16, SizeT(FramebufferTarget::FramebufferTargetCount)> g_fboBindVersions;
     } // namespace FramebufferImpl
@@ -169,8 +257,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         public:
             BackendProgramObjectImpl();
             ~BackendProgramObjectImpl();
-            void SyncToBackend(SharedPtr<MG_State::GLState::ProgramObject>& stateProgramObject);
-            void Use();
+            void SyncToBackend(const SharedPtr<MG_State::GLState::ProgramObject>& stateProgramObject);
+            void Use() const;
             Uint GetBackendProgramId() const { return m_backendProgramId; }
             Uint GetBackendGlobalUBOId() const { return m_backendGlobalUBOId; }
 
@@ -180,7 +268,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             Bool m_isInitialized = false;
         };
 
-        extern UnorderedMap<SharedPtr<MG_State::GLState::ProgramObject>, SharedPtr<BackendProgramObjectImpl>>
+        extern StateBackendObjectRegistry<MG_State::GLState::ProgramObject, BackendProgramObjectImpl>
             g_backendProgramObjects;
     } // namespace PrgramImpl
 
@@ -188,9 +276,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
         class BackendSamplerObject {
         public:
             BackendSamplerObject();
-            void SyncToBackend(SharedPtr<MG_State::GLState::SamplerObject>& stateSamplerObject);
+            void SyncToBackend(const SharedPtr<MG_State::GLState::SamplerObject>& stateSamplerObject);
             void Bind(Uint unit);
-            Uint GetBackendSamplerId();
+            Uint GetBackendSamplerId() const;
 
         private:
             Uint m_backendSamplerId = 0;
@@ -203,7 +291,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
         extern Array<BackendSamplerObject*, MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS>
             g_boundSamplersCache;
-        extern UnorderedMap<SharedPtr<MG_State::GLState::SamplerObject>, SharedPtr<BackendSamplerObject>>
+        extern StateBackendObjectRegistry<MG_State::GLState::SamplerObject, BackendSamplerObject>
             g_backendSamplerObjects;
     } // namespace SamplerImpl
 
@@ -212,8 +300,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
         public:
             BackendRenderbufferObject();
             void SyncToBackend(const SharedPtr<MG_State::GLState::RenderbufferObject>& stateRBOObject);
-            Uint GetBackendRenderbufferId() { return m_backendRBOId; }
-            void Bind();
+            Uint GetBackendRenderbufferId() const { return m_backendRBOId; }
+            void Bind() const;
 
         private:
             Uint m_backendRBOId = 0;
@@ -223,7 +311,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             Int m_cacheHeight = 0;
         };
 
-        extern UnorderedMap<SharedPtr<MG_State::GLState::RenderbufferObject>, SharedPtr<BackendRenderbufferObject>>
+        extern StateBackendObjectRegistry<MG_State::GLState::RenderbufferObject, BackendRenderbufferObject>
             g_backendRenderbufferObjects;
     } // namespace RenderbufferImpl
 } // namespace MobileGL::MG_Backend::DirectGLES

MobileGL/MG_Backend/DirectGLES/Utils.cpp

@@ -19,10 +19,6 @@
 #include <MG_Util/Converters/MGToGL/FramebufferEnumConverter.h>
 
 namespace MobileGL::MG_Backend::DirectGLES {
-    namespace BufferImpl {} // namespace BufferImpl
-
-    namespace VertexArrayImpl {} // namespace VertexArrayImpl
-
     namespace TextureImpl {
         void GenerateTextureFormatInfo(TextureInternalFormat internalFormat, GLenum* outInternalFormat,
                                        GLenum* outFormat, GLenum* outType) {
@@ -36,9 +32,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                  outInternalFormat, outFormat, outType);
         }
     } // namespace TextureImpl
-
-    namespace FramebufferImpl {} // namespace FramebufferImpl
-
     namespace PrgramImpl {
         String ProcessOutColorLocations(const String& glslCode) {
 #ifdef TRACY_ENABLE
@@ -166,7 +159,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 return GL_UNIFORM_BUFFER_BINDING;
 
             case GL_FRAMEBUFFER:
-                return GL_FRAMEBUFFER_BINDING;
             case GL_DRAW_FRAMEBUFFER:
                 return GL_DRAW_FRAMEBUFFER_BINDING;
             case GL_READ_FRAMEBUFFER:
@@ -176,7 +168,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 return GL_RENDERBUFFER_BINDING;
 
             case GL_VERTEX_ARRAY:
-                return GL_VERTEX_ARRAY_BINDING;
             case GL_VERTEX_ARRAY_BINDING:
                 return GL_VERTEX_ARRAY_BINDING;
 

MobileGL/MG_Backend/DirectGLES/Utils.h

@@ -14,15 +14,15 @@ namespace MobileGL::MG_Backend::DirectGLES {
     namespace DebugImpl {
         class ErrorLopper {
         public:
-            void Loop(std::function<void(GLenum)>);
-            void Clear();
+            static void Loop(const std::function<void(GLenum)>&);
+            static void Clear();
             ErrorLopper();
             ~ErrorLopper();
         };
 
         class OpenGLScopeMarker {
         public:
-            explicit OpenGLScopeMarker(String scopeName);
+            explicit OpenGLScopeMarker(const String& scopeName);
             ~OpenGLScopeMarker();
         };
     } // namespace DebugImpl

MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp

@@ -28,6 +28,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         auto nativeWindow = reinterpret_cast<NativeWindowType>(m_windowHandle.Handle);
 
         pVulkanRenderer = MakeUnique<MG_Backend::DirectVulkan::VulkanRenderer>(nativeWindow);
+        MOBILEGL_ASSERT(pVulkanRenderer != nullptr, "InitWindowSurface: VulkanRenderer creation failed");
         pVulkanRenderer->Initialize();
         return true;
     }

MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp

@@ -17,165 +17,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     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 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 (count < 0) {
-            MGLOG_W("DrawElementsBaseVertex skipped: count (%d) must be non-negative", count);
-            return;
-        }
-        if (count == 0) {
-            return;
-        }
-        if (mode != GL_TRIANGLES) {
-            MGLOG_W("DrawElementsBaseVertex skipped: primitive mode %u is not supported yet", mode);
-            return;
-        }
-
-        SizeT indexSize = 0;
-        switch (type) {
-        case GL_UNSIGNED_SHORT:
-            indexSize = sizeof(Uint16);
-            break;
-        case GL_UNSIGNED_INT:
-            indexSize = sizeof(Uint32);
-            break;
-        default:
-            MGLOG_W("DrawElementsBaseVertex skipped: index type %u is not supported yet", type);
-            return;
-        }
-
-        const auto vao = MG_State::pGLContext->GetBoundVertexArray();
-        if (!vao) {
-            MGLOG_W("DrawElementsBaseVertex skipped: no bound VAO");
-            return;
-        }
-
-        const auto indexBuffer = vao->GetIndexBufferBindingSlot().GetBoundObject();
-        if (!indexBuffer) {
-            MGLOG_W("DrawElementsBaseVertex skipped: no bound ELEMENT_ARRAY_BUFFER");
-            return;
-        }
-
-        const auto indexData = indexBuffer->GetDataReadOnly();
-        if (!indexData || indexData->empty()) {
-            MGLOG_W("DrawElementsBaseVertex skipped: ELEMENT_ARRAY_BUFFER has no data");
-            return;
-        }
-
-        const SizeT byteOffset = reinterpret_cast<SizeT>(indices);
-        const SizeT requiredBytes = static_cast<SizeT>(count) * indexSize;
-        if (byteOffset + requiredBytes > indexBuffer->GetSize()) {
-            MGLOG_W("DrawElementsBaseVertex skipped: index range out of bounds (offset=%zu, size=%zu, buffer=%zu)",
-                    byteOffset, requiredBytes, indexBuffer->GetSize());
-            return;
-        }
-
-        DrawElementPayload payload{};
-        payload.drawArray.mode = mode;
-        payload.drawArray.first = 0;
-        payload.drawArray.count = count;
-        const auto currentProgram = MG_State::pGLContext->GetCurrentProgram();
-        payload.drawArray.program = currentProgram ? currentProgram.get() : nullptr;
-        payload.drawArray.vertexArray = vao.get();
-        payload.indexType = type;
-        payload.indexByteOffset = byteOffset;
-        payload.baseVertex = basevertex;
-
-        pVulkanRenderer->DrawElements(payload);
-    }
+    void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices, GLint basevertex) {}
 
     void MultiDrawElementsBaseVertex(GLenum mode, const GLsizei* count, GLenum type, const GLvoid* const* indices,
-                                     GLsizei drawcount, const GLint* basevertex) {
-        MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawElementsBaseVertex called with null VulkanRenderer");
-        MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawElementsBaseVertex called with null GL context");
+                                     GLsizei drawcount, const GLint* basevertex) {}
 
-        if (drawcount < 0) {
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: drawcount (%d) must be non-negative", drawcount);
-            return;
-        }
-        if (drawcount == 0) {
-            return;
-        }
-        if (!count || !indices || !basevertex) {
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: count/indices/basevertex pointer is null");
-            return;
-        }
-        if (mode != GL_TRIANGLES) {
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: primitive mode %u is not supported yet", mode);
-            return;
-        }
-
-        SizeT indexSize = 0;
-        switch (type) {
-        case GL_UNSIGNED_SHORT:
-            indexSize = sizeof(Uint16);
-            break;
-        case GL_UNSIGNED_INT:
-            indexSize = sizeof(Uint32);
-            break;
-        default:
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: index type %u is not supported yet", type);
-            return;
-        }
-
-        const auto vao = MG_State::pGLContext->GetBoundVertexArray();
-        if (!vao) {
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: no bound VAO");
-            return;
-        }
-
-        const auto indexBuffer = vao->GetIndexBufferBindingSlot().GetBoundObject();
-        if (!indexBuffer) {
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: no bound ELEMENT_ARRAY_BUFFER");
-            return;
-        }
-
-        const auto indexData = indexBuffer->GetDataReadOnly();
-        if (!indexData || indexData->empty()) {
-            MGLOG_W("MultiDrawElementsBaseVertex skipped: ELEMENT_ARRAY_BUFFER has no data");
-            return;
-        }
-
-        const auto currentProgram = MG_State::pGLContext->GetCurrentProgram();
-        Vector<DrawElementPayload> payloads;
-        payloads.reserve(static_cast<SizeT>(drawcount));
-        for (GLsizei i = 0; i < drawcount; ++i) {
-            if (count[i] < 0) {
-                MGLOG_W("MultiDrawElementsBaseVertex skipped: count[%d] (%d) must be non-negative", i, count[i]);
-                return;
-            }
-            if (count[i] == 0) {
-                continue;
-            }
-
-            const SizeT byteOffset = reinterpret_cast<SizeT>(indices[i]);
-            const SizeT requiredBytes = static_cast<SizeT>(count[i]) * indexSize;
-            if (byteOffset + requiredBytes > indexBuffer->GetSize()) {
-                MGLOG_W("MultiDrawElementsBaseVertex skipped: draw[%d] index range out of bounds (offset=%zu, "
-                        "size=%zu, buffer=%zu)",
-                        i, byteOffset, requiredBytes, indexBuffer->GetSize());
-                return;
-            }
-
-            DrawElementPayload payload{};
-            payload.drawArray.mode = mode;
-            payload.drawArray.first = 0;
-            payload.drawArray.count = count[i];
-            payload.drawArray.program = currentProgram ? currentProgram.get() : nullptr;
-            payload.drawArray.vertexArray = vao.get();
-            payload.indexType = type;
-            payload.indexByteOffset = byteOffset;
-            payload.baseVertex = basevertex[i];
-            payloads.push_back(payload);
-        }
-
-        if (payloads.empty()) {
-            return;
-        }
-        pVulkanRenderer->MultiDrawElements(payloads);
-    }
     void MultiDrawElementsIndirect(GLenum mode, GLenum type, const void* indirect, GLsizei drawcount, GLsizei stride) {}
     void MultiDrawArraysIndirect(GLenum mode, const void* indirect, GLsizei drawcount, GLsizei stride) {}
     void DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type,
@@ -206,180 +52,44 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawElements called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawElements called with null GL context");
 
-        if (drawcount < 0) {
-            MGLOG_W("MultiDrawElements skipped: drawcount (%d) must be non-negative", drawcount);
-            return;
-        }
-        if (drawcount == 0) {
-            return;
-        }
-        if (!count || !indices) {
-            MGLOG_W("MultiDrawElements skipped: count/indices pointer is null");
-            return;
-        }
-        if (mode != GL_TRIANGLES) {
-            MGLOG_W("MultiDrawElements skipped: primitive mode %u is not supported yet", mode);
-            return;
-        }
-
-        SizeT indexSize = 0;
-        switch (type) {
-        case GL_UNSIGNED_SHORT:
-            indexSize = sizeof(Uint16);
-            break;
-        case GL_UNSIGNED_INT:
-            indexSize = sizeof(Uint32);
-            break;
-        default:
-            MGLOG_W("MultiDrawElements skipped: index type %u is not supported yet", type);
-            return;
-        }
-
-        const auto vao = MG_State::pGLContext->GetBoundVertexArray();
-        if (!vao) {
-            MGLOG_W("MultiDrawElements skipped: no bound VAO");
-            return;
-        }
-
-        const auto indexBuffer = vao->GetIndexBufferBindingSlot().GetBoundObject();
-        if (!indexBuffer) {
-            MGLOG_W("MultiDrawElements skipped: no bound ELEMENT_ARRAY_BUFFER");
-            return;
-        }
-
-        const auto indexData = indexBuffer->GetDataReadOnly();
-        if (!indexData || indexData->empty()) {
-            MGLOG_W("MultiDrawElements skipped: ELEMENT_ARRAY_BUFFER has no data");
-            return;
-        }
-
-        const auto currentProgram = MG_State::pGLContext->GetCurrentProgram();
-        Vector<DrawElementPayload> payloads;
-        payloads.reserve(static_cast<SizeT>(drawcount));
+        Vector<DrawElementCmd> cmds;
+        cmds.reserve(static_cast<SizeT>(drawcount));
         for (GLsizei i = 0; i < drawcount; ++i) {
-            if (count[i] < 0) {
-                MGLOG_W("MultiDrawElements skipped: count[%d] (%d) must be non-negative", i, count[i]);
-                return;
-            }
             if (count[i] == 0) {
                 continue;
             }
 
-            const auto byteOffset = reinterpret_cast<SizeT>(indices[i]);
-            const SizeT requiredBytes = static_cast<SizeT>(count[i]) * indexSize;
-            if (byteOffset + requiredBytes > indexBuffer->GetSize()) {
-                MGLOG_W("MultiDrawElements skipped: draw[%d] index range out of bounds (offset=%zu, size=%zu, "
-                        "buffer=%zu)",
-                        i, byteOffset, requiredBytes, indexBuffer->GetSize());
-                return;
-            }
-
-            DrawElementPayload payload{};
-            payload.drawArray.mode = mode;
-            payload.drawArray.first = 0;
-            payload.drawArray.count = count[i];
-            payload.drawArray.program = currentProgram ? currentProgram.get() : nullptr;
-            payload.drawArray.vertexArray = vao.get();
+            DrawElementCmd payload{};
+            payload.mode = mode;
+            payload.first = 0;
+            payload.count = count[i];
             payload.indexType = type;
-            payload.indexByteOffset = byteOffset;
-            payloads.push_back(payload);
+            payload.indexByteOffset = reinterpret_cast<SizeT>(indices[i]);
+            cmds.push_back(payload);
         }
 
-        if (payloads.empty()) {
+        if (cmds.empty()) {
             return;
         }
-        pVulkanRenderer->MultiDrawElements(payloads);
+        pVulkanRenderer->MultiDrawElements(cmds);
     }
 
     void Clear(GLbitfield mask) {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::Clear called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::Clear called with null GL context");
-
-        const auto& drawFboSlot = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw);
-        const auto drawFbo = drawFboSlot.GetBoundObject();
-        const auto defaultFboInfo = MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo;
-        const auto defaultFbo = defaultFboInfo ? defaultFboInfo->defaultFBO : nullptr;
-        const Bool isDefaultFboTarget = (drawFbo == defaultFbo) || (drawFbo == nullptr && defaultFbo != nullptr);
-        Uint drawFboExternalIndex = 0;
-        if (drawFbo) {
-            drawFboExternalIndex = drawFbo->GetExternalIndex();
-        } else if (defaultFbo) {
-            drawFboExternalIndex = defaultFbo->GetExternalIndex();
-        }
-
-        const auto& clearColor = MG_State::pGLContext->GetClearColor();
-        const auto clearDepth = MG_State::pGLContext->GetClearDepth();
-        const auto clearStencil = static_cast<Uint32>(MG_State::pGLContext->GetClearStencil());
-        pVulkanRenderer->RequestClear(mask, clearColor, clearDepth, clearStencil, drawFboExternalIndex,
-                                      isDefaultFboTarget);
+        pVulkanRenderer->Clear(mask);
     }
 
     void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices) {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElements called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElements called with null GL context");
 
-        if (count < 0) {
-            MGLOG_W("DrawElements skipped: count (%d) must be non-negative", count);
-            return;
-        }
-
-        if (count == 0) {
-            return;
-        }
-
-        if (mode != GL_TRIANGLES) {
-            MGLOG_W("DrawElements skipped: primitive mode %u is not supported yet", mode);
-            return;
-        }
-
-        SizeT indexSize = 0;
-        switch (type) {
-        case GL_UNSIGNED_SHORT:
-            indexSize = sizeof(Uint16);
-            break;
-        case GL_UNSIGNED_INT:
-            indexSize = sizeof(Uint32);
-            break;
-        default:
-            MGLOG_W("DrawElements skipped: index type %u is not supported yet", type);
-            return;
-        }
-
-        const auto vao = MG_State::pGLContext->GetBoundVertexArray();
-        if (!vao) {
-            MGLOG_W("DrawElements skipped: no bound VAO");
-            return;
-        }
-
-        const auto indexBuffer = vao->GetIndexBufferBindingSlot().GetBoundObject();
-        if (!indexBuffer) {
-            MGLOG_W("DrawElements skipped: no bound ELEMENT_ARRAY_BUFFER");
-            return;
-        }
-
-        const auto indexData = indexBuffer->GetDataReadOnly();
-        if (!indexData || indexData->empty()) {
-            MGLOG_W("DrawElements skipped: ELEMENT_ARRAY_BUFFER has no data");
-            return;
-        }
-
-        const auto byteOffset = reinterpret_cast<SizeT>(indices);
-        const SizeT requiredBytes = static_cast<SizeT>(count) * indexSize;
-        if (byteOffset + requiredBytes > indexBuffer->GetSize()) {
-            MGLOG_W("DrawElements skipped: index range out of bounds (offset=%zu, size=%zu, buffer=%zu)", byteOffset,
-                    requiredBytes, indexBuffer->GetSize());
-            return;
-        }
-
-        DrawElementPayload payload{};
-        payload.drawArray.mode = mode;
-        payload.drawArray.first = 0;
-        payload.drawArray.count = count;
-        const auto currentProgram = MG_State::pGLContext->GetCurrentProgram();
-        payload.drawArray.program = currentProgram ? currentProgram.get() : nullptr;
-        payload.drawArray.vertexArray = vao.get();
+        DrawElementCmd payload{};
+        payload.mode = mode;
+        payload.first = 0;
+        payload.count = count;
         payload.indexType = type;
-        payload.indexByteOffset = byteOffset;
+        payload.indexByteOffset = reinterpret_cast<SizeT>(indices);
 
         pVulkanRenderer->DrawElements(payload);
     }
@@ -388,34 +98,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawArrays called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawArrays called with null GL context");
 
-        if (first < 0) {
-            MGLOG_W("DrawArrays skipped: first (%d) must be non-negative", first);
-            return;
-        }
-
-        if (count < 0) {
-            MGLOG_W("DrawArrays skipped: count (%d) must be non-negative", count);
-            return;
-        }
-
-        if (count == 0) {
-            return;
-        }
-
-        if (mode != GL_TRIANGLES) {
-            MGLOG_W("DrawArrays skipped: primitive mode %u is not supported yet", mode);
-            return;
-        }
-
-        DrawArrayPayload payload{};
+        DrawArrayCmd payload{};
         payload.mode = mode;
         payload.first = first;
         payload.count = count;
-        const auto currentProgram = MG_State::pGLContext->GetCurrentProgram();
-        payload.program = currentProgram ? currentProgram.get() : nullptr;
-
-        const auto vao = MG_State::pGLContext->GetBoundVertexArray();
-        payload.vertexArray = vao ? vao.get() : nullptr;
 
         pVulkanRenderer->DrawArrays(payload);
     }
@@ -424,33 +110,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                          GLint dstY1, GLbitfield mask, GLenum filter) {
         MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::BlitFramebuffer called with null VulkanRenderer");
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::BlitFramebuffer called with null GL context");
-
-        const auto& readFboSlot = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read);
-        const auto& drawFboSlot = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw);
-        const auto readFbo = readFboSlot.GetBoundObject();
-        const auto drawFbo = drawFboSlot.GetBoundObject();
-        const auto defaultFboInfo = MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo;
-        const auto defaultFbo = defaultFboInfo ? defaultFboInfo->defaultFBO : nullptr;
-
-        const Bool readIsDefault = (readFbo == defaultFbo) || (readFbo == nullptr && defaultFbo != nullptr);
-        const Bool drawIsDefault = (drawFbo == defaultFbo) || (drawFbo == nullptr && defaultFbo != nullptr);
-
-        Uint readFboExternalIndex = 0;
-        if (readFbo) {
-            readFboExternalIndex = readFbo->GetExternalIndex();
-        } else if (defaultFbo) {
-            readFboExternalIndex = defaultFbo->GetExternalIndex();
-        }
-
-        Uint drawFboExternalIndex = 0;
-        if (drawFbo) {
-            drawFboExternalIndex = drawFbo->GetExternalIndex();
-        } else if (defaultFbo) {
-            drawFboExternalIndex = defaultFbo->GetExternalIndex();
-        }
-
-        pVulkanRenderer->BlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter,
-                                         readFboExternalIndex, drawFboExternalIndex, readIsDefault, drawIsDefault);
+        pVulkanRenderer->BlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
     }
 
     void Present() {

MobileGL/MG_Backend/DirectVulkan/Renderer/PipelineFactory.cpp

@@ -21,6 +21,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.renderPass, sizeof(payload.renderPass)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.subpass, sizeof(payload.subpass)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.topology, sizeof(payload.topology)));
+        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.depthTestEnable, sizeof(payload.depthTestEnable)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.depthWriteEnable, sizeof(payload.depthWriteEnable)));
         XXHASH_VERIFY(XXH64_update(m_hashState, &payload.depthCompareOp, sizeof(payload.depthCompareOp)));
@@ -79,8 +81,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         VkPipelineRasterizationStateCreateInfo raster{VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO};
         raster.polygonMode = VK_POLYGON_MODE_FILL;
-        raster.cullMode = VK_CULL_MODE_NONE;
-        raster.frontFace = VK_FRONT_FACE_CLOCKWISE;
+        raster.cullMode = payload.cullMode;
+        raster.frontFace = payload.frontFace;
         raster.lineWidth = 1.0f;
 
         VkPipelineMultisampleStateCreateInfo ms{VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO};

MobileGL/MG_Backend/DirectVulkan/Renderer/PipelineFactory.h

@@ -24,6 +24,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             VkRenderPass renderPass = VK_NULL_HANDLE;
             Uint32 subpass = 0;
             VkPrimitiveTopology topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
+            VkCullModeFlags cullMode = VK_CULL_MODE_BACK_BIT;
+            VkFrontFace frontFace = VK_FRONT_FACE_CLOCKWISE;
             Bool depthTestEnable = false;
             Bool depthWriteEnable = false;
             VkCompareOp depthCompareOp = VK_COMPARE_OP_ALWAYS;

MobileGL/MG_Backend/DirectVulkan/Renderer/ProgramFactory.cpp

@@ -364,7 +364,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
 
         auto& entry = m_cache[hash];
-        entry.device = m_device;
         entry.hash = hash;
         auto& shaders = program.GetAttachedShaders();
         auto& spirv = program.GetGeneratedSpirv();

MobileGL/MG_Backend/DirectVulkan/Renderer/ProgramFactory.h

@@ -26,39 +26,35 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         };
         using CompileOptionFlags = Flags<CompileOptionBit>;
         using HashType = Uint64;
-        struct BackendProgramObject {
+        struct VkProgramObject {
             HashType hash = 0;
-            VkDevice device = VK_NULL_HANDLE;
             Vector<VkPipelineShaderStageCreateInfo> stages;
             Vector<VkShaderModule> modules;
+            static inline VkDevice s_device = VK_NULL_HANDLE;
 
-            BackendProgramObject() = default;
-            BackendProgramObject(const BackendProgramObject&) = delete;
-            BackendProgramObject& operator=(const BackendProgramObject&) = delete;
-            BackendProgramObject(BackendProgramObject&& other) noexcept {
+            VkProgramObject() = default;
+            VkProgramObject(const VkProgramObject&) = delete;
+            VkProgramObject& operator=(const VkProgramObject&) = delete;
+            VkProgramObject(VkProgramObject&& other) noexcept {
                 hash = other.hash;
-                device = other.device;
                 stages = std::move(other.stages);
                 modules = std::move(other.modules);
                 other.hash = 0;
-                other.device = VK_NULL_HANDLE;
             }
-            BackendProgramObject& operator=(BackendProgramObject&& other) noexcept {
+            VkProgramObject& operator=(VkProgramObject&& other) noexcept {
                 if (this == &other) {
                     return *this;
                 }
                 DestroyModules();
                 stages.clear();
                 hash = other.hash;
-                device = other.device;
                 stages = std::move(other.stages);
                 modules = std::move(other.modules);
                 other.hash = 0;
-                other.device = VK_NULL_HANDLE;
                 return *this;
             }
 
-            ~BackendProgramObject() {
+            ~VkProgramObject() {
                 DestroyModules();
                 stages.clear();
             }
@@ -66,8 +62,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         private:
             void DestroyModules() {
                 for (auto module : modules) {
-                    if (module != VK_NULL_HANDLE && device != VK_NULL_HANDLE) {
-                        vkDestroyShaderModule(device, module, nullptr);
+                    if (module != VK_NULL_HANDLE && s_device != VK_NULL_HANDLE) {
+                        vkDestroyShaderModule(s_device, module, nullptr);
                     }
                 }
                 modules.clear();
@@ -75,7 +71,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         };
 
         explicit ProgramFactory(VkDevice device, const VulkanRendererConfig& config)
-            : m_device(device), m_config(config) {}
+            : m_device(device), m_config(config) {
+            VkProgramObject::s_device = device;
+        }
         ~ProgramFactory();
         ProgramFactory(const ProgramFactory&) = delete;
 
@@ -87,7 +85,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     private:
         VkDevice m_device = VK_NULL_HANDLE;
-        UnorderedMap<HashType, BackendProgramObject> m_cache;
+        UnorderedMap<HashType, VkProgramObject> m_cache;
         const VulkanRendererConfig& m_config;
         static inline XXH64_state_t* m_hashState = XXH64_createState();
     };

MobileGL/MG_Backend/DirectVulkan/Renderer/SwapchainObject.cpp

@@ -8,6 +8,9 @@
 
 #include "SwapchainObject.h"
 
+#include "MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.h"
+#include "MG_State/GLState/TextureState/TextureObject2D.h"
+
 #if defined(__has_include)
 #if __has_include(<vulkan/vk_enum_string_helper.h>)
 #include <vulkan/vk_enum_string_helper.h>
@@ -38,6 +41,40 @@ static const char* string_VkSurfaceTransformFlagBitsKHR(VkSurfaceTransformFlagBi
 #endif
 
 namespace MobileGL::MG_Backend::DirectVulkan {
+    namespace {
+        Bool HasStencilComponent(VkFormat format) {
+            return format == VK_FORMAT_D24_UNORM_S8_UINT || format == VK_FORMAT_D32_SFLOAT_S8_UINT;
+        }
+
+        VkFormat FindSupportedDepthStencilFormat(VkPhysicalDevice physicalDevice) {
+            const VkFormat candidates[] = {VK_FORMAT_D24_UNORM_S8_UINT, VK_FORMAT_D32_SFLOAT_S8_UINT,
+                                           VK_FORMAT_D32_SFLOAT};
+            for (VkFormat format : candidates) {
+                VkFormatProperties props{};
+                vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &props);
+                if ((props.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) != 0) {
+                    return format;
+                }
+            }
+            return VK_FORMAT_UNDEFINED;
+        }
+
+        Uint32 FindMemoryType(VkPhysicalDevice physicalDevice, Uint32 typeFilter, VkMemoryPropertyFlags properties) {
+            VkPhysicalDeviceMemoryProperties memProperties{};
+            vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);
+
+            for (Uint32 i = 0; i < memProperties.memoryTypeCount; i++) {
+                if ((typeFilter & (1 << i)) &&
+                    (memProperties.memoryTypes[i].propertyFlags & properties) == properties) {
+                    return i;
+                }
+            }
+
+            MOBILEGL_ASSERT(false, "Failed to find suitable memory type.");
+            return 0;
+        }
+    } // namespace
+
     SwapchainObject::SwapchainCapabilities SwapchainObject::GetSwapchainCapabilities(VkPhysicalDevice physicalDevice,
                                                                                       VkSurfaceKHR surface) {
         SwapchainCapabilities swapchainCapabilities{};
@@ -127,6 +164,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         createInfo.imageFormat = pickedSurfaceFormat.format;
         createInfo.imageColorSpace = pickedSurfaceFormat.colorSpace;
         createInfo.imageExtent = swapchainCaps.currentExtent;
+        if (swapchainCaps.currentTransform == VK_SURFACE_TRANSFORM_ROTATE_90_BIT_KHR ||
+            swapchainCaps.currentTransform == VK_SURFACE_TRANSFORM_ROTATE_270_BIT_KHR) {
+            std::swap(createInfo.imageExtent.width, createInfo.imageExtent.height);
+        }
+
         createInfo.imageArrayLayers = 1;
         const VkImageUsageFlags requiredImageUsage =
             VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
@@ -185,12 +227,133 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_imageLayouts.assign(imageCount, VK_IMAGE_LAYOUT_UNDEFINED);
 
         CreateImageViews(device);
+        CreateDepthStencilResources(device, physicalDevice);
 
         MGLOG_I("Swapchain created, extent = %dx%d, swapchain imageCount = %d", m_extent.width, m_extent.height,
                 imageCount);
+
+        // Properly initialize Default FBO here
+        auto& defaultFBOInfo = MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo;
+        auto* colorTex = static_cast<MG_State::GLState::TextureObject2D*>(defaultFBOInfo->colorAttachment.get());
+        colorTex->AllocateStorage(
+            TextureUploadTarget::Texture2D, 0, {
+                {(Int)createInfo.imageExtent.width, (Int)createInfo.imageExtent.height, 1},
+                createInfo.imageExtent.width * (Int)createInfo.imageExtent.height * 4}); // TODO: 4 is format size
+        TextureInternalFormat depthFormat = TextureInternalFormat::Depth24Stencil8;
+        switch (m_depthStencilFormat) {
+            case VK_FORMAT_D24_UNORM_S8_UINT:
+                depthFormat = TextureInternalFormat::Depth24Stencil8;
+                break;
+            case VK_FORMAT_D32_SFLOAT_S8_UINT:
+                depthFormat = TextureInternalFormat::Depth32FStencil8;
+                break;
+            case VK_FORMAT_D32_SFLOAT:
+                depthFormat = TextureInternalFormat::DepthComponent32F;
+                break;
+            default:
+                depthFormat = TextureInternalFormat::Depth24Stencil8;
+                break;
+        }
+        auto* depthTex = static_cast<MG_State::GLState::TextureObject2D*>(defaultFBOInfo->depthAttachment.get());
+        depthTex->SetInternalFormat(depthFormat);
+        depthTex->AllocateStorage(TextureUploadTarget::Texture2D, 0, {
+            {(Int)createInfo.imageExtent.width, (Int)createInfo.imageExtent.height, 1},
+                        createInfo.imageExtent.width * createInfo.imageExtent.width * 4}); // TODO: 4 is format size
+
+    }
+
+    void SwapchainObject::CreateDepthStencilResources(VkDevice device, VkPhysicalDevice physicalDevice) {
+        DestroyDepthStencilResources(device);
+
+        const auto imageCount = static_cast<Uint32>(m_images.size());
+        if (imageCount == 0) {
+            return;
+        }
+
+        m_depthStencilFormat = FindSupportedDepthStencilFormat(physicalDevice);
+        MOBILEGL_ASSERT(m_depthStencilFormat != VK_FORMAT_UNDEFINED, "No supported depth/stencil format found.");
+
+        m_depthStencilImages.assign(imageCount, VK_NULL_HANDLE);
+        m_depthStencilImageMemories.assign(imageCount, VK_NULL_HANDLE);
+        m_depthStencilImageViews.assign(imageCount, VK_NULL_HANDLE);
+        m_depthStencilImageLayouts.assign(imageCount, VK_IMAGE_LAYOUT_UNDEFINED);
+
+        for (Uint32 i = 0; i < imageCount; ++i) {
+            VkImageCreateInfo imageInfo{};
+            imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
+            imageInfo.imageType = VK_IMAGE_TYPE_2D;
+            imageInfo.extent.width = m_extent.width;
+            imageInfo.extent.height = m_extent.height;
+            imageInfo.extent.depth = 1;
+            imageInfo.mipLevels = 1;
+            imageInfo.arrayLayers = 1;
+            imageInfo.format = m_depthStencilFormat;
+            imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
+            imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+            imageInfo.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
+            imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
+            imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+            VK_VERIFY(vkCreateImage(device, &imageInfo, nullptr, &m_depthStencilImages[i]), "vkCreateImage(depth)");
+
+            VkMemoryRequirements memRequirements{};
+            vkGetImageMemoryRequirements(device, m_depthStencilImages[i], &memRequirements);
+
+            VkMemoryAllocateInfo allocInfo{};
+            allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+            allocInfo.allocationSize = memRequirements.size;
+            allocInfo.memoryTypeIndex =
+                FindMemoryType(physicalDevice, memRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
+            VK_VERIFY(vkAllocateMemory(device, &allocInfo, nullptr, &m_depthStencilImageMemories[i]),
+                      "vkAllocateMemory(depth)");
+            VK_VERIFY(vkBindImageMemory(device, m_depthStencilImages[i], m_depthStencilImageMemories[i], 0),
+                      "vkBindImageMemory(depth)");
+
+            VkImageViewCreateInfo viewInfo{};
+            viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+            viewInfo.image = m_depthStencilImages[i];
+            viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
+            viewInfo.format = m_depthStencilFormat;
+            viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
+            if (HasStencilComponent(m_depthStencilFormat)) {
+                viewInfo.subresourceRange.aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
+            }
+            viewInfo.subresourceRange.baseMipLevel = 0;
+            viewInfo.subresourceRange.levelCount = 1;
+            viewInfo.subresourceRange.baseArrayLayer = 0;
+            viewInfo.subresourceRange.layerCount = 1;
+            VK_VERIFY(vkCreateImageView(device, &viewInfo, nullptr, &m_depthStencilImageViews[i]),
+                      "vkCreateImageView(depth)");
+        }
+    }
+
+    void SwapchainObject::DestroyDepthStencilResources(VkDevice device) {
+        for (auto view : m_depthStencilImageViews) {
+            if (view != VK_NULL_HANDLE) {
+                vkDestroyImageView(device, view, nullptr);
+            }
+        }
+        m_depthStencilImageViews.clear();
+
+        for (auto image : m_depthStencilImages) {
+            if (image != VK_NULL_HANDLE) {
+                vkDestroyImage(device, image, nullptr);
+            }
+        }
+        m_depthStencilImages.clear();
+
+        for (auto memory : m_depthStencilImageMemories) {
+            if (memory != VK_NULL_HANDLE) {
+                vkFreeMemory(device, memory, nullptr);
+            }
+        }
+        m_depthStencilImageMemories.clear();
+        m_depthStencilImageLayouts.clear();
+        m_depthStencilFormat = VK_FORMAT_UNDEFINED;
     }
 
     void SwapchainObject::Shutdown(VkDevice device) {
+        DestroyDepthStencilResources(device);
+
         for (auto imageView : m_imageViews) {
             vkDestroyImageView(device, imageView, nullptr);
         }
@@ -221,6 +384,29 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_imageLayouts[index] = layout;
     }
 
+    VkImage SwapchainObject::GetDepthStencilImage(Uint32 index) const {
+        MOBILEGL_ASSERT(index < m_depthStencilImages.size(), "Swapchain depth/stencil image index out of range");
+        return m_depthStencilImages[index];
+    }
+
+    VkImageView SwapchainObject::GetDepthStencilImageView(Uint32 index) const {
+        MOBILEGL_ASSERT(index < m_depthStencilImageViews.size(),
+                        "Swapchain depth/stencil image view index out of range");
+        return m_depthStencilImageViews[index];
+    }
+
+    VkImageLayout SwapchainObject::GetDepthStencilImageLayout(Uint32 index) const {
+        MOBILEGL_ASSERT(index < m_depthStencilImageLayouts.size(),
+                        "Swapchain depth/stencil image layout index out of range");
+        return m_depthStencilImageLayouts[index];
+    }
+
+    void SwapchainObject::SetDepthStencilImageLayout(Uint32 index, VkImageLayout layout) {
+        MOBILEGL_ASSERT(index < m_depthStencilImageLayouts.size(),
+                        "Swapchain depth/stencil image layout index out of range");
+        m_depthStencilImageLayouts[index] = layout;
+    }
+
     void SwapchainObject::CreateImageViews(VkDevice device) {
         m_imageViews.resize(m_images.size(), VK_NULL_HANDLE);
         for (SizeT i = 0; i < m_imageViews.size(); i++) {

MobileGL/MG_Backend/DirectVulkan/Renderer/SwapchainObject.h

@@ -38,6 +38,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkSurfaceTransformFlagBitsKHR GetPreTransform() const { return m_preTransform; }
         const Vector<VkImage>& GetImages() const { return m_images; }
         const Vector<VkImageView>& GetImageViews() const { return m_imageViews; }
+        VkFormat GetDepthStencilFormat() const { return m_depthStencilFormat; }
+        const Vector<VkImageView>& GetDepthStencilImageViews() const { return m_depthStencilImageViews; }
+        VkImage GetDepthStencilImage(Uint32 index) const;
+        VkImageView GetDepthStencilImageView(Uint32 index) const;
+        VkImageLayout GetDepthStencilImageLayout(Uint32 index) const;
+        void SetDepthStencilImageLayout(Uint32 index, VkImageLayout layout);
         VkImage GetImage(Uint32 index) const;
         VkImageLayout GetImageLayout(Uint32 index) const;
         void SetImageLayout(Uint32 index, VkImageLayout layout);
@@ -45,6 +51,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
     private:
         void CreateImageViews(VkDevice device);
+        void CreateDepthStencilResources(VkDevice device, VkPhysicalDevice physicalDevice);
+        void DestroyDepthStencilResources(VkDevice device);
         static constexpr VkPresentModeKHR s_desiredPresentModes[] {
             VK_PRESENT_MODE_MAILBOX_KHR,
             VK_PRESENT_MODE_IMMEDIATE_KHR,
@@ -59,5 +67,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Vector<VkImage> m_images;
         Vector<VkImageView> m_imageViews;
         Vector<VkImageLayout> m_imageLayouts;
+
+        VkFormat m_depthStencilFormat = VK_FORMAT_UNDEFINED;
+        Vector<VkImage> m_depthStencilImages;
+        Vector<VkDeviceMemory> m_depthStencilImageMemories;
+        Vector<VkImageView> m_depthStencilImageViews;
+        Vector<VkImageLayout> m_depthStencilImageLayouts;
     };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/UniformDescriptorBinder.cpp

@@ -8,13 +8,52 @@
 
 #include "UniformDescriptorBinder.h"
 
-#include "VkFramebufferManager.h"
 #include "MG_State/GLState/Core.h"
 #include "MG_State/GLState/ProgramState/ProgramObject.h"
+#include "MG_Util/Converters/MGToStr/FramebufferEnumConverter.h"
 #include "MG_Util/ShaderTranspiler/Types.h"
 #include <limits>
 
 namespace MobileGL::MG_Backend::DirectVulkan {
+    static Bool FindFramebufferAttachmentForTexture(const MG_State::GLState::FramebufferObject& framebuffer,
+                                                    const MG_State::GLState::ITextureObject& texture,
+                                                    FramebufferAttachmentType& outAttachment, Int& outLevel) {
+        const auto& attachments = framebuffer.GetAllAttachmentObjects();
+        for (SizeT i = 0; i < attachments.size(); ++i) {
+            const auto attachmentType = static_cast<FramebufferAttachmentType>(i);
+            if (attachmentType == FramebufferAttachmentType::None) {
+                continue;
+            }
+
+            const auto& attachment = attachments[i];
+            if (!attachment.IsTexture()) {
+                continue;
+            }
+
+            auto attachedTexture = attachment.GetTexture();
+            if (attachedTexture && attachedTexture.get() == &texture) {
+                outAttachment = attachmentType;
+                outLevel = attachment.GetTextureLevel();
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    static Bool IsValidSampledImageLayout(VkImageLayout layout) {
+        switch (layout) {
+        case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
+        case VK_IMAGE_LAYOUT_GENERAL:
+        case VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL:
+        case VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL:
+        case VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL:
+            return true;
+        default:
+            return false;
+        }
+    }
+
     VkDeviceSize UniformDescriptorBinder::AlignUp(VkDeviceSize value, VkDeviceSize alignment) {
         if (alignment == 0) {
             return value;
@@ -138,8 +177,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     Bool UniformDescriptorBinder::Initialize(VkDevice device, VmaAllocator allocator,
                                              VkDeviceSize minUniformBufferOffsetAlignment, Uint32 frameCount,
                                              Uint32 maxBindings, Uint32 setsPerFrame, VkDeviceSize perFrameUploadBytes,
-                                             VkTextureSamplerManager* textureSamplerManager,
-                                             VkFramebufferManager* framebufferManager) {
+                                             VkTextureManager* textureManager, VkSamplerManager* samplerManager) {
         Shutdown();
 
         MOBILEGL_ASSERT(device != VK_NULL_HANDLE, "UniformDescriptorBinder::Initialize requires valid VkDevice");
@@ -147,6 +185,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MOBILEGL_ASSERT(frameCount > 0, "UniformDescriptorBinder::Initialize requires frameCount > 0");
         MOBILEGL_ASSERT(maxBindings > 0, "UniformDescriptorBinder::Initialize requires maxBindings > 0");
         MOBILEGL_ASSERT(setsPerFrame > 0, "UniformDescriptorBinder::Initialize requires setsPerFrame > 0");
+        MOBILEGL_ASSERT(textureManager != nullptr,
+                        "UniformDescriptorBinder::Initialize requires valid texture manager");
+        MOBILEGL_ASSERT(samplerManager != nullptr,
+                        "UniformDescriptorBinder::Initialize requires valid sampler manager");
 
         m_device = device;
         m_allocator = allocator;
@@ -156,8 +198,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_maxBindings = maxBindings;
         m_setsPerFrame = setsPerFrame;
         m_peakDescriptorSetsObserved = 0;
-        m_textureSamplerManager = textureSamplerManager;
-        m_framebufferManager = framebufferManager;
+        m_textureManager = textureManager;
+        m_samplerManager = samplerManager;
 
         m_frames.resize(m_frameCount);
         for (Uint32 frameIndex = 0; frameIndex < m_frameCount; ++frameIndex) {
@@ -219,8 +261,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_maxBindings = 0;
         m_setsPerFrame = 0;
         m_peakDescriptorSetsObserved = 0;
-        m_textureSamplerManager = nullptr;
-        m_framebufferManager = nullptr;
+        m_textureManager = nullptr;
+        m_samplerManager = nullptr;
     }
 
     void UniformDescriptorBinder::BeginFrame(Uint32 frameIndex) {
@@ -443,7 +485,86 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                                                            const MG_State::GLState::ProgramObject& program,
                                                            const ProgramLayout& layout, Uint32 binding,
                                                            VkDescriptorImageInfo& outImageInfo) const {
-        if (!m_textureSamplerManager || !MG_State::pGLContext || binding >= layout.samplerUniformLocationByBinding.size()) {
+        (void)commandBuffer;
+        MOBILEGL_ASSERT(m_textureManager != nullptr, "ResolveSamplerDescriptor: texture manager is null");
+        MOBILEGL_ASSERT(m_samplerManager != nullptr, "ResolveSamplerDescriptor: sampler manager is null");
+        SharedPtr<MG_State::GLState::ITextureObject> texture;
+        if (!ResolveSamplerTexture(program, layout, binding, texture)) {
+            return false;
+        }
+
+        const Int location = layout.samplerUniformLocationByBinding[binding];
+        const Int unit = program.GetUniformSamplerOrImageUnitIndex(static_cast<Uint>(location));
+        auto& textureUnit = MG_State::pGLContext->GetTextureUnitObject(unit);
+        const auto samplerOverride = textureUnit.GetSamplerObject();
+        if (!texture) {
+            return false;
+        }
+
+        const MG_State::GLState::SamplerObject* samplerToUse = samplerOverride ? samplerOverride.get() : texture->GetSamplerObject().get();
+        if (!samplerToUse) {
+            return false;
+        }
+        VkTextureManager::TextureResource* resource =
+            m_textureManager->SyncTextureAndGetDescriptor(*texture);
+        if (resource == nullptr) {
+            return false;
+        }
+        if (!IsValidSampledImageLayout(resource->layout)) {
+            auto drawFbo = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw).GetBoundObject();
+            FramebufferAttachmentType attachmentType = FramebufferAttachmentType::None;
+            Int attachmentLevel = 0;
+            if (drawFbo &&
+                FindFramebufferAttachmentForTexture(*drawFbo, *texture, attachmentType, attachmentLevel)) {
+                MOBILEGL_ASSERT(false,
+                                "ResolveSamplerDescriptor: framebuffer feedback loop detected: textureId=%d is bound "
+                                "for sampling at binding=%u, but is also attached to drawFbo=%u as %s (level=%d, "
+                                "trackedLayout=%d)",
+                                texture->GetExternalIndex(), binding, drawFbo->GetExternalIndex(),
+                                MG_Util::ConvertFramebufferAttachmentTypeToString(attachmentType).c_str(),
+                                attachmentLevel, static_cast<Int>(resource->layout));
+            }
+
+            MOBILEGL_ASSERT(false,
+                            "ResolveSamplerDescriptor: invalid sampled image layout=%d for textureId=%d, binding=%u",
+                            static_cast<Int>(resource->layout), texture->GetExternalIndex(), binding);
+            return false;
+        }
+        outImageInfo = {
+            .sampler = m_samplerManager->GetOrCreateSampler(*samplerToUse),
+            .imageView = resource->view,
+            .imageLayout = resource->layout,
+        };
+        return outImageInfo.sampler != VK_NULL_HANDLE;
+    }
+
+    Bool UniformDescriptorBinder::ResolveSamplerDescriptorOverride(
+        const SamplerBindingOverride& samplerBindingOverride,
+        VkDescriptorImageInfo& outImageInfo) const {
+        MOBILEGL_ASSERT(m_textureManager != nullptr, "ResolveSamplerDescriptorOverride: texture manager is null");
+        MOBILEGL_ASSERT(m_samplerManager != nullptr, "ResolveSamplerDescriptorOverride: sampler manager is null");
+        if (samplerBindingOverride.texture == nullptr || samplerBindingOverride.sampler == nullptr) {
+            return false;
+        }
+
+        auto* resource = m_textureManager->SyncTextureAndGetDescriptor(*samplerBindingOverride.texture);
+        if (resource == nullptr || !IsValidSampledImageLayout(resource->layout)) {
+            return false;
+        }
+
+        outImageInfo = {
+            .sampler = m_samplerManager->GetOrCreateSampler(*samplerBindingOverride.sampler),
+            .imageView = resource->view,
+            .imageLayout = resource->layout,
+        };
+        return outImageInfo.sampler != VK_NULL_HANDLE;
+    }
+
+    Bool UniformDescriptorBinder::ResolveSamplerTexture(const MG_State::GLState::ProgramObject& program,
+                                                        const ProgramLayout& layout, Uint32 binding,
+                                                        SharedPtr<MG_State::GLState::ITextureObject>& outTexture) const {
+        outTexture.reset();
+        if (!MG_State::pGLContext || binding >= layout.samplerUniformLocationByBinding.size()) {
             return false;
         }
 
@@ -458,40 +579,35 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
 
         auto& textureUnit = MG_State::pGLContext->GetTextureUnitObject(unit);
-        const auto samplerOverride = textureUnit.GetSamplerObject();
-
         const TextureTarget preferredTarget = layout.samplerTextureTargetByBinding[binding];
-        auto texture = textureUnit.GetBindingSlot(preferredTarget).GetBoundObject();
-        if (!texture) {
-            auto& slots = textureUnit.GetAllBindingSlots();
-            for (auto& slot : slots) {
-                texture = slot.GetBoundObject();
-                if (texture) {
-                    break;
-                }
-            }
-        }
-        if (!texture) {
+        outTexture = textureUnit.GetBindingSlot(preferredTarget).GetBoundObject();
+        return outTexture != nullptr;
+    }
+
+    Bool UniformDescriptorBinder::CollectSampledTextures(const MG_State::GLState::ProgramObject& program,
+                                                         Vector<MG_State::GLState::ITextureObject*>& outTextures) {
+        outTextures.clear();
+        ProgramLayout* layout = GetOrCreateProgramLayout(program);
+        if (layout == nullptr) {
             return false;
         }
 
-        if (m_framebufferManager &&
-            m_framebufferManager->TransitionOffscreenColorTextureToShaderRead(commandBuffer, texture->GetExternalIndex())) {
-            VkImageView offscreenView = VK_NULL_HANDLE;
-            if (m_framebufferManager->GetOffscreenColorViewByTexture(texture->GetExternalIndex(), offscreenView) &&
-                offscreenView != VK_NULL_HANDLE) {
-                VkDescriptorImageInfo sampledInfo{};
-                if (!m_textureSamplerManager->SyncTextureAndGetDescriptor(*texture, samplerOverride.get(), sampledInfo)) {
-                    return false;
-                }
-                sampledInfo.imageView = offscreenView;
-                sampledInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-                outImageInfo = sampledInfo;
-                return true;
+        for (Uint32 binding = 0; binding < m_maxBindings; ++binding) {
+            if (layout->bindingKinds[binding] != BindingKind::CombinedImageSampler) {
+                continue;
+            }
+
+            SharedPtr<MG_State::GLState::ITextureObject> texture;
+            if (!ResolveSamplerTexture(program, *layout, binding, texture) || !texture) {
+                continue;
+            }
+
+            auto found = std::find(outTextures.begin(), outTextures.end(), texture.get());
+            if (found == outTextures.end()) {
+                outTextures.push_back(texture.get());
             }
         }
-
-        return m_textureSamplerManager->SyncTextureAndGetDescriptor(*texture, samplerOverride.get(), outImageInfo);
+        return true;
     }
 
     UniformDescriptorBinder::ProgramLayout* UniformDescriptorBinder::GetOrCreateProgramLayout(
@@ -578,10 +694,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         outData.assign(m_maxBindings, nullptr);
         outSizes.assign(m_maxBindings, 0);
 
-        if (MG_State::pGLContext == nullptr) {
-            return false;
-        }
-
         const Uint32 activeUniformBlockCount = static_cast<Uint32>(program.GetActiveUniformBlocksCount());
         const Uint32 uniformBindingPointCount =
             static_cast<Uint32>(MG_State::pGLContext->GetBufferBindingPointCount(BufferTarget::Uniform));
@@ -693,27 +805,19 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         return true;
     }
 
-    Bool UniformDescriptorBinder::BindProgramUniformBuffers(VkCommandBuffer commandBuffer, VkPipelineLayout pipelineLayout,
+    Bool UniformDescriptorBinder::BindProgramUniformBuffers(VkCommandBuffer commandBuffer,
                                                             const MG_State::GLState::ProgramObject& program,
                                                             Uint32 frameIndex) {
-        if (m_frames.empty()) {
-            MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: binder is not initialized");
-            return false;
-        }
-        if (frameIndex >= m_frames.size()) {
-            MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: invalid frame index %u", frameIndex);
-            return false;
-        }
+        return BindProgramUniformBuffers(commandBuffer, program, frameIndex, nullptr);
+    }
 
+    Bool UniformDescriptorBinder::BindProgramUniformBuffers(VkCommandBuffer commandBuffer,
+                                                            const MG_State::GLState::ProgramObject& program,
+                                                            Uint32 frameIndex,
+                                                            const SamplerBindingOverride* samplerBindingOverride) {
         ProgramLayout* layout = GetOrCreateProgramLayout(program);
-        if (!layout || layout->pipelineLayout == VK_NULL_HANDLE || layout->descriptorSetLayout == VK_NULL_HANDLE) {
-            MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: cannot get program layout");
-            return false;
-        }
-        if (layout->pipelineLayout != pipelineLayout) {
-            MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: pipelineLayout mismatch");
-            return false;
-        }
+        MOBILEGL_ASSERT(layout != nullptr,
+                        "UniformDescriptorBinder::BindProgramUniformBuffers: program layout is null");
 
         auto& frame = m_frames[frameIndex];
         if (frame.descriptorPools.empty()) {
@@ -764,8 +868,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
 
         static const Uint8 kFallbackData[16] = {};
-        VkDescriptorImageInfo fallbackImageInfo{};
-        const Bool hasFallbackImage = m_textureSamplerManager && m_textureSamplerManager->GetFallbackDescriptor(fallbackImageInfo);
+        MOBILEGL_ASSERT(m_textureManager != nullptr, "BindProgramUniformBuffers: texture manager is null");
+        MOBILEGL_ASSERT(m_samplerManager != nullptr, "BindProgramUniformBuffers: sampler manager is null");
 
         Vector<VkWriteDescriptorSet> writes;
         writes.reserve(m_maxBindings);
@@ -830,16 +934,23 @@ namespace MobileGL::MG_Backend::DirectVulkan {
                 dynamicOffsets.push_back(static_cast<Uint32>(payloadOffset));
             } else {
                 VkDescriptorImageInfo imageInfo{};
-                Bool hasImage = ResolveSamplerDescriptor(commandBuffer, program, *layout, binding, imageInfo);
+                Bool hasImage = false;
+                if (samplerBindingOverride != nullptr &&
+                    samplerBindingOverride->binding == binding &&
+                    samplerBindingOverride->texture != nullptr &&
+                    samplerBindingOverride->sampler != nullptr) {
+                    hasImage = ResolveSamplerDescriptorOverride(*samplerBindingOverride, imageInfo);
+                } else {
+                    hasImage = ResolveSamplerDescriptor(commandBuffer, program, *layout, binding, imageInfo);
+                }
                 if (!hasImage) {
-                    if (!hasFallbackImage) {
-                        MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: fallback sampler/texture is unavailable");
-                        return false;
-                    }
-                    imageInfo = fallbackImageInfo;
+                    MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: sampler binding %u has no valid texture descriptor",
+                            binding);
+                    return false;
                 }
                 if (imageInfo.sampler == VK_NULL_HANDLE || imageInfo.imageView == VK_NULL_HANDLE) {
-                    MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: fallback sampler/texture is unavailable");
+                    MGLOG_E("UniformDescriptorBinder::BindProgramUniformBuffers failed: sampler binding %u has null sampler or imageView",
+                            binding);
                     return false;
                 }
                 imageInfos.push_back(imageInfo);
@@ -853,7 +964,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             vkUpdateDescriptorSets(m_device, static_cast<Uint32>(writes.size()), writes.data(), 0, nullptr);
         }
 
-        vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet,
+        vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, layout->pipelineLayout, 0, 1, &descriptorSet,
                                 static_cast<Uint32>(dynamicOffsets.size()), dynamicOffsets.data());
         return true;
     }
@@ -872,4 +983,3 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         m_programLayouts.clear();
     }
 } // namespace MobileGL::MG_Backend::DirectVulkan
-

MobileGL/MG_Backend/DirectVulkan/Renderer/UniformDescriptorBinder.h

@@ -9,18 +9,19 @@
 #pragma once
 
 #include "VkBufferObject.h"
-#include "VkTextureSamplerManager.h"
+#include "VkSamplerManager.h"
+#include "VkTextureManager.h"
 #include "../VkIncludes.h"
 #include <Includes.h>
 #include <vk_mem_alloc.h>
 
 namespace MobileGL::MG_State::GLState {
+    class ITextureObject;
     class ProgramObject;
+    class SamplerObject;
 }
 
 namespace MobileGL::MG_Backend::DirectVulkan {
-    class VkFramebufferManager;
-
     class UniformDescriptorBinder {
     public:
         enum class BindingKind : Uint8 {
@@ -29,17 +30,27 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             CombinedImageSampler
         };
 
+        struct SamplerBindingOverride {
+            Uint32 binding = 0;
+            MG_State::GLState::ITextureObject* texture = nullptr;
+            const MG_State::GLState::SamplerObject* sampler = nullptr;
+        };
+
         Bool Initialize(VkDevice device, VmaAllocator allocator, VkDeviceSize minUniformBufferOffsetAlignment,
                         Uint32 frameCount, Uint32 maxBindings = 16, Uint32 setsPerFrame = 64,
                         VkDeviceSize perFrameUploadBytes = 4 * 1024 * 1024,
-                        VkTextureSamplerManager* textureSamplerManager = nullptr,
-                        VkFramebufferManager* framebufferManager = nullptr);
+                        VkTextureManager* textureManager = nullptr, VkSamplerManager* samplerManager = nullptr);
         void Shutdown();
 
         void BeginFrame(Uint32 frameIndex);
         VkPipelineLayout GetOrCreatePipelineLayout(const MG_State::GLState::ProgramObject& program);
-        Bool BindProgramUniformBuffers(VkCommandBuffer commandBuffer, VkPipelineLayout pipelineLayout,
+        Bool CollectSampledTextures(const MG_State::GLState::ProgramObject& program,
+                                    Vector<MG_State::GLState::ITextureObject*>& outTextures);
+        Bool BindProgramUniformBuffers(VkCommandBuffer commandBuffer,
                                        const MG_State::GLState::ProgramObject& program, Uint32 frameIndex);
+        Bool BindProgramUniformBuffers(VkCommandBuffer commandBuffer,
+                                       const MG_State::GLState::ProgramObject& program, Uint32 frameIndex,
+                                       const SamplerBindingOverride* samplerBindingOverride);
 
     private:
         struct DescriptorPoolBucket {
@@ -74,9 +85,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         static TextureTarget UniformTypeToTextureTarget(GLenum glType);
         Bool ReflectSamplerBindings(const MG_State::GLState::ProgramObject& program, ProgramLayout& layout) const;
         Bool ReflectGlobalUboBinding(const MG_State::GLState::ProgramObject& program, ProgramLayout& layout) const;
+        Bool ResolveSamplerTexture(const MG_State::GLState::ProgramObject& program, const ProgramLayout& layout,
+                                   Uint32 binding, SharedPtr<MG_State::GLState::ITextureObject>& outTexture) const;
         Bool ResolveSamplerDescriptor(VkCommandBuffer commandBuffer, const MG_State::GLState::ProgramObject& program,
                                       const ProgramLayout& layout, Uint32 binding,
                                       VkDescriptorImageInfo& outImageInfo) const;
+        Bool ResolveSamplerDescriptorOverride(const SamplerBindingOverride& samplerBindingOverride,
+                                              VkDescriptorImageInfo& outImageInfo) const;
         Bool ReflectBindingKinds(const MG_State::GLState::ProgramObject& program, Vector<BindingKind>& outKinds) const;
         ProgramLayout* GetOrCreateProgramLayout(const MG_State::GLState::ProgramObject& program);
         Bool AllocateUploadRegion(FrameResources& frame, VkDeviceSize size, VkDeviceSize& outOffset);
@@ -97,8 +112,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Uint32 m_maxBindings = 0;
         Uint32 m_setsPerFrame = 0;
         Uint32 m_peakDescriptorSetsObserved = 0;
-        VkTextureSamplerManager* m_textureSamplerManager = nullptr;
-        VkFramebufferManager* m_framebufferManager = nullptr;
+        VkTextureManager* m_textureManager = nullptr;
+        VkSamplerManager* m_samplerManager = nullptr;
     };
 } // namespace MobileGL::MG_Backend::DirectVulkan
 

MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.cpp

@@ -0,0 +1,99 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.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 "VkClearManager.h"
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    Bool VkClearManager::Initialize() {
+        return true;
+    }
+
+    void VkClearManager::Shutdown() {
+
+    }
+
+    void VkClearManager::QueueClear(GLbitfield mask, const ClearFramebufferPayload& clearPayload,
+                                    const MG_State::GLState::FramebufferObject& drawFbo) {
+        if (mask & GL_COLOR_BUFFER_BIT) {
+            auto& drawbufs = drawFbo.GetDrawBuffers();
+            // This should automatically work on default & offscreen FBO
+            for (auto drawbuf: drawbufs) {
+                if (drawbuf == FramebufferAttachmentType::None ||
+                    drawFbo.GetAttachment(drawbuf).IsRenderbuffer())
+                    continue;
+
+                QueueClear({
+                    .color = clearPayload.color,
+                    .attachmentType = drawbuf
+                }, drawFbo.GetAttachment(drawbuf).GetTexture());
+            }
+        }
+
+        if (mask & GL_DEPTH_BUFFER_BIT &&
+            !drawFbo.GetAttachment(FramebufferAttachmentType::Depth).IsRenderbuffer()) {
+            QueueClear({
+                .depth = clearPayload.depth,
+                .attachmentType = FramebufferAttachmentType::Depth,
+            }, drawFbo.GetAttachment(FramebufferAttachmentType::Depth).GetTexture());
+        }
+
+        if (mask & GL_STENCIL_BUFFER_BIT &&
+            !drawFbo.GetAttachment(FramebufferAttachmentType::Stencil).IsRenderbuffer()) {
+            QueueClear({
+                .stencil = clearPayload.stencil,
+                .attachmentType = FramebufferAttachmentType::Stencil,
+            }, drawFbo.GetAttachment(FramebufferAttachmentType::Stencil).GetTexture());
+        }
+    }
+
+    void VkClearManager::QueueClear(const ClearAttachmentPayload& clearPayload,
+                                    const SharedPtr<MG_State::GLState::ITextureObject>& texture) {
+        WeakPtr<MG_State::GLState::ITextureObject> weakTexturePtr = texture;
+        if (weakTexturePtr.expired())
+            return;
+        auto* pTexture = weakTexturePtr.lock().get();
+        m_aliveObjects[pTexture] = weakTexturePtr;
+        m_pendingClears[pTexture] = clearPayload;
+    }
+
+    Bool VkClearManager::HasPendingClear(MG_State::GLState::ITextureObject* texture) {
+        return m_pendingClears.find(texture) != m_pendingClears.end();
+    }
+
+    Bool VkClearManager::GetPendingClear(MG_State::GLState::ITextureObject* texture, ClearAttachmentPayload& outPayload) {
+        if (m_aliveObjects.find(texture) == m_aliveObjects.end() ||
+            m_pendingClears.find(texture) == m_pendingClears.end()) {
+            return false;
+        }
+
+        outPayload = m_pendingClears[texture];
+        return true;
+    }
+
+    void VkClearManager::PopPendingClear(MG_State::GLState::ITextureObject* texture) {
+        m_aliveObjects.erase(texture);
+        m_pendingClears.erase(texture);
+    }
+
+    SizeT VkClearManager::CollectGarbage() {
+        m_gcCounter++;
+        if (m_gcCounter != 0) {
+            return 0;
+        }
+
+        SizeT count = 0;
+        for (const auto& [raw, weak]: m_aliveObjects) {
+            if (weak.expired()) {
+                count++;
+                m_pendingClears.erase(raw);
+                m_aliveObjects.erase(raw);
+            }
+        }
+        return count;
+    }
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.h

@@ -0,0 +1,52 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.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 "../VkIncludes.h"
+#include "../VulkanRendererConfig.h"
+#include "MG_State/GLState/FramebufferState/FramebufferObject.h"
+#include "MG_Util/Math/VectorTypes.h"
+
+#include <Includes.h>
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    struct ClearFramebufferPayload {
+        FloatVec4 color;
+        Float depth{};
+        Uint32 stencil{};
+    };
+
+    struct ClearAttachmentPayload {
+        union {
+            FloatVec4 color;
+            Float depth{};
+            Uint32 stencil;
+        };
+        FramebufferAttachmentType attachmentType = FramebufferAttachmentType::Color0;
+    };
+
+    class VkClearManager {
+    public:
+        Bool Initialize();
+        void Shutdown();
+
+        void QueueClear(GLbitfield mask, const ClearFramebufferPayload& clearPayload, const MG_State::GLState::FramebufferObject& drawFbo);
+        void QueueClear(
+            const ClearAttachmentPayload& clearPayload,
+            const SharedPtr<MG_State::GLState::ITextureObject>& texture);
+        Bool HasPendingClear(MG_State::GLState::ITextureObject* texture);
+        Bool GetPendingClear(MG_State::GLState::ITextureObject* texture, ClearAttachmentPayload& outPayload);
+        void PopPendingClear(MG_State::GLState::ITextureObject* texture);
+        SizeT CollectGarbage();
+    private:
+        Uint8 m_gcCounter = 0;
+        UnorderedMap<MG_State::GLState::ITextureObject*, ClearAttachmentPayload> m_pendingClears;
+        UnorderedMap<MG_State::GLState::ITextureObject*, WeakPtr<MG_State::GLState::ITextureObject>> m_aliveObjects;
+    };
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.cpp

@@ -1,547 +0,0 @@
-// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.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 "VkFramebufferManager.h"
-
-#include <MG_State/GLState/RenderbufferState/RenderbufferObject.h>
-#include <MG_State/GLState/TextureState/TextureEnum.h>
-
-namespace MobileGL::MG_Backend::DirectVulkan {
-    Bool VkFramebufferManager::Initialize(const InitInfo& initInfo) {
-        m_device = initInfo.device;
-        m_physicalDevice = initInfo.physicalDevice;
-        return m_device != VK_NULL_HANDLE && m_physicalDevice != VK_NULL_HANDLE;
-    }
-
-    void VkFramebufferManager::Shutdown() {
-        for (auto& [_, target] : m_offscreenColorTargets) {
-            DestroyOffscreenColorTarget(target);
-        }
-        m_offscreenColorTargets.clear();
-        m_device = VK_NULL_HANDLE;
-        m_physicalDevice = VK_NULL_HANDLE;
-    }
-
-    Bool VkFramebufferManager::EnsureOffscreenColorTarget(Uint glFboExternalIndex,
-                                                          const MG_State::GLState::FramebufferObject& glFbo) {
-        const auto& colorAttachment = glFbo.GetAttachment(FramebufferAttachmentType::Color0);
-        if (!colorAttachment.IsValid() || colorAttachment.IsEmpty()) {
-            MGLOG_W("VkFramebufferManager: FBO %u has no valid COLOR0 attachment", glFboExternalIndex);
-            return false;
-        }
-
-        const auto objectVersion = glFbo.GetObjectVersion();
-        auto& target = m_offscreenColorTargets[glFboExternalIndex];
-        if (target.image != VK_NULL_HANDLE && target.glObjectVersion == objectVersion) {
-            return true;
-        }
-
-        return RecreateOffscreenColorTarget(target, glFbo, colorAttachment, objectVersion);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenColorToAttachment(VkCommandBuffer commandBuffer,
-                                                                    Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenColorToAttachment skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        if (!TransitionImageLayout(commandBuffer, target.image, target.layout, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
-                                   VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, 0,
-                                   VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT,
-                                   VK_IMAGE_ASPECT_COLOR_BIT)) {
-            return false;
-        }
-
-        if (target.depthStencilImage == VK_NULL_HANDLE) {
-            return true;
-        }
-
-        VkImageAspectFlags aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
-        if (target.depthStencilFormat == VK_FORMAT_D24_UNORM_S8_UINT ||
-            target.depthStencilFormat == VK_FORMAT_D32_SFLOAT_S8_UINT) {
-            aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-        }
-
-        return TransitionImageLayout(
-            commandBuffer, target.depthStencilImage, target.depthStencilLayout,
-            VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
-            VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT, 0,
-            VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT, aspectMask);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenColorToTransferSrc(VkCommandBuffer commandBuffer,
-                                                                     Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenColorToTransferSrc skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        return TransitionImageLayout(commandBuffer, target.image, target.layout, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
-                                     VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0,
-                                     VK_ACCESS_TRANSFER_READ_BIT, VK_IMAGE_ASPECT_COLOR_BIT);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenColorToTransferDst(VkCommandBuffer commandBuffer,
-                                                                     Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenColorToTransferDst skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        return TransitionImageLayout(commandBuffer, target.image, target.layout, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
-                                     VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0,
-                                     VK_ACCESS_TRANSFER_WRITE_BIT, VK_IMAGE_ASPECT_COLOR_BIT);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenColorToGeneral(VkCommandBuffer commandBuffer,
-                                                                 Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenColorToGeneral skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        return TransitionImageLayout(commandBuffer, target.image, target.layout, VK_IMAGE_LAYOUT_GENERAL,
-                                     VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0,
-                                     VK_ACCESS_TRANSFER_READ_BIT | VK_ACCESS_TRANSFER_WRITE_BIT,
-                                     VK_IMAGE_ASPECT_COLOR_BIT);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenDepthStencilToTransferSrc(VkCommandBuffer commandBuffer,
-                                                                            Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenDepthStencilToTransferSrc skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        if (target.depthStencilImage == VK_NULL_HANDLE) {
-            return false;
-        }
-        VkImageAspectFlags aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
-        if (target.depthStencilFormat == VK_FORMAT_D24_UNORM_S8_UINT ||
-            target.depthStencilFormat == VK_FORMAT_D32_SFLOAT_S8_UINT) {
-            aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-        }
-        return TransitionImageLayout(commandBuffer, target.depthStencilImage, target.depthStencilLayout,
-                                     VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
-                                     VK_PIPELINE_STAGE_TRANSFER_BIT, 0, VK_ACCESS_TRANSFER_READ_BIT, aspectMask);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenDepthStencilToTransferDst(VkCommandBuffer commandBuffer,
-                                                                            Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenDepthStencilToTransferDst skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        if (target.depthStencilImage == VK_NULL_HANDLE) {
-            return false;
-        }
-        VkImageAspectFlags aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
-        if (target.depthStencilFormat == VK_FORMAT_D24_UNORM_S8_UINT ||
-            target.depthStencilFormat == VK_FORMAT_D32_SFLOAT_S8_UINT) {
-            aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-        }
-        return TransitionImageLayout(commandBuffer, target.depthStencilImage, target.depthStencilLayout,
-                                     VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
-                                     VK_PIPELINE_STAGE_TRANSFER_BIT, 0, VK_ACCESS_TRANSFER_WRITE_BIT, aspectMask);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenDepthStencilToGeneral(VkCommandBuffer commandBuffer,
-                                                                        Uint glFboExternalIndex) {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end()) {
-            MGLOG_W("VkFramebufferManager::TransitionOffscreenDepthStencilToGeneral skipped: FBO %u not found",
-                    glFboExternalIndex);
-            return false;
-        }
-        auto& target = it->second;
-        if (target.depthStencilImage == VK_NULL_HANDLE) {
-            return false;
-        }
-        VkImageAspectFlags aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
-        if (target.depthStencilFormat == VK_FORMAT_D24_UNORM_S8_UINT ||
-            target.depthStencilFormat == VK_FORMAT_D32_SFLOAT_S8_UINT) {
-            aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-        }
-        return TransitionImageLayout(commandBuffer, target.depthStencilImage, target.depthStencilLayout,
-                                     VK_IMAGE_LAYOUT_GENERAL, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
-                                     VK_PIPELINE_STAGE_TRANSFER_BIT, 0,
-                                     VK_ACCESS_TRANSFER_READ_BIT | VK_ACCESS_TRANSFER_WRITE_BIT, aspectMask);
-    }
-
-    Bool VkFramebufferManager::TransitionOffscreenColorTextureToShaderRead(VkCommandBuffer commandBuffer,
-                                                                           Uint textureExternalIndex) {
-        for (auto& [_, target] : m_offscreenColorTargets) {
-            if (target.colorTextureExternalIndex != textureExternalIndex || target.image == VK_NULL_HANDLE) {
-                continue;
-            }
-            const Bool fromUndefined = (target.layout == VK_IMAGE_LAYOUT_UNDEFINED);
-            return TransitionImageLayout(
-                commandBuffer, target.image, target.layout, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
-                fromUndefined ? VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT
-                              : (VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_TRANSFER_BIT),
-                VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
-                fromUndefined ? 0 : (VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_TRANSFER_WRITE_BIT),
-                VK_ACCESS_SHADER_READ_BIT, VK_IMAGE_ASPECT_COLOR_BIT);
-        }
-        return false;
-    }
-
-    Bool VkFramebufferManager::GetOffscreenColorImage(Uint glFboExternalIndex, VkImage& outImage,
-                                                      VkExtent2D& outExtent) const {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end() || it->second.image == VK_NULL_HANDLE) {
-            return false;
-        }
-        outImage = it->second.image;
-        outExtent = it->second.extent;
-        return true;
-    }
-
-    Bool VkFramebufferManager::GetOffscreenDepthStencilImage(Uint glFboExternalIndex, VkImage& outImage,
-                                                             VkExtent2D& outExtent, VkFormat& outFormat) const {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end() || it->second.depthStencilImage == VK_NULL_HANDLE) {
-            return false;
-        }
-        outImage = it->second.depthStencilImage;
-        outExtent = it->second.extent;
-        outFormat = it->second.depthStencilFormat;
-        return true;
-    }
-
-    Bool VkFramebufferManager::GetOffscreenColorViewByTexture(Uint textureExternalIndex,
-                                                              VkImageView& outImageView) const {
-        for (const auto& [_, target] : m_offscreenColorTargets) {
-            if (target.colorTextureExternalIndex != textureExternalIndex || target.imageView == VK_NULL_HANDLE) {
-                continue;
-            }
-            outImageView = target.imageView;
-            return true;
-        }
-        return false;
-    }
-
-    Bool VkFramebufferManager::GetOffscreenRenderSurface(Uint glFboExternalIndex, VkImageView& outColorView,
-                                                         VkFormat& outColorFormat, VkImageView& outDepthStencilView,
-                                                         VkFormat& outDepthStencilFormat, VkExtent2D& outExtent) const {
-        auto it = m_offscreenColorTargets.find(glFboExternalIndex);
-        if (it == m_offscreenColorTargets.end() || it->second.imageView == VK_NULL_HANDLE) {
-            return false;
-        }
-        outColorView = it->second.imageView;
-        outColorFormat = it->second.format;
-        outDepthStencilView = it->second.depthStencilImageView;
-        outExtent = it->second.extent;
-        outDepthStencilFormat = it->second.depthStencilFormat;
-        return true;
-    }
-
-    Bool VkFramebufferManager::RecreateOffscreenColorTarget(
-        OffscreenColorTarget& target, const MG_State::GLState::FramebufferObject& glFbo,
-        const MG_State::GLState::FramebufferAttachmentObject& colorAttachment, Uint16 glObjectVersion) {
-        DestroyOffscreenColorTarget(target);
-
-        const auto size = colorAttachment.GetSize();
-        if (size.x() <= 0 || size.y() <= 0) {
-            MGLOG_W("VkFramebufferManager: COLOR0 attachment size is invalid (%d, %d)", size.x(), size.y());
-            return false;
-        }
-
-        const VkFormat format = ResolveColorFormat(colorAttachment);
-        if (format == VK_FORMAT_UNDEFINED) {
-            MGLOG_W("VkFramebufferManager: COLOR0 attachment format is unsupported for Vulkan clear");
-            return false;
-        }
-
-        VkImageCreateInfo imageInfo{};
-        imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
-        imageInfo.imageType = VK_IMAGE_TYPE_2D;
-        imageInfo.extent.width = static_cast<Uint32>(size.x());
-        imageInfo.extent.height = static_cast<Uint32>(size.y());
-        imageInfo.extent.depth = 1;
-        imageInfo.mipLevels = 1;
-        imageInfo.arrayLayers = 1;
-        imageInfo.format = format;
-        imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
-        imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        imageInfo.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT |
-                          VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
-        imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
-        imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-        VK_VERIFY(vkCreateImage(m_device, &imageInfo, nullptr, &target.image), "vkCreateImage(offscreen color)");
-
-        VkMemoryRequirements memoryRequirements{};
-        vkGetImageMemoryRequirements(m_device, target.image, &memoryRequirements);
-
-        VkMemoryAllocateInfo allocInfo{};
-        allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-        allocInfo.allocationSize = memoryRequirements.size;
-        allocInfo.memoryTypeIndex =
-            FindMemoryType(memoryRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
-        VK_VERIFY(vkAllocateMemory(m_device, &allocInfo, nullptr, &target.memory), "vkAllocateMemory(offscreen color)");
-        VK_VERIFY(vkBindImageMemory(m_device, target.image, target.memory, 0), "vkBindImageMemory(offscreen color)");
-
-        VkImageViewCreateInfo viewInfo{};
-        viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-        viewInfo.image = target.image;
-        viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-        viewInfo.format = format;
-        viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-        viewInfo.subresourceRange.baseMipLevel = 0;
-        viewInfo.subresourceRange.levelCount = 1;
-        viewInfo.subresourceRange.baseArrayLayer = 0;
-        viewInfo.subresourceRange.layerCount = 1;
-        VK_VERIFY(vkCreateImageView(m_device, &viewInfo, nullptr, &target.imageView),
-                  "vkCreateImageView(offscreen color)");
-
-        const auto& depthAttachment = glFbo.GetAttachment(FramebufferAttachmentType::Depth);
-        const auto& stencilAttachment = glFbo.GetAttachment(FramebufferAttachmentType::Stencil);
-        const Bool requestedDepthStencil = (depthAttachment.IsValid() && !depthAttachment.IsEmpty()) ||
-                                           (stencilAttachment.IsValid() && !stencilAttachment.IsEmpty());
-        VkFormat depthStencilFormat = ResolveDepthStencilFormat(depthAttachment, stencilAttachment);
-        if (depthStencilFormat == VK_FORMAT_D24_UNORM_S8_UINT) {
-            depthStencilFormat =
-                FindSupportedDepthStencilFormat({VK_FORMAT_D24_UNORM_S8_UINT, VK_FORMAT_D32_SFLOAT_S8_UINT});
-        } else if (depthStencilFormat == VK_FORMAT_D32_SFLOAT) {
-            depthStencilFormat = FindSupportedDepthStencilFormat({VK_FORMAT_D32_SFLOAT, VK_FORMAT_D16_UNORM});
-        }
-        const Bool hasDepthStencil = (depthStencilFormat != VK_FORMAT_UNDEFINED);
-        if (requestedDepthStencil && !hasDepthStencil) {
-            MGLOG_W("VkFramebufferManager: FBO %u depth/stencil attachment exists but format is unsupported",
-                    glFbo.GetExternalIndex());
-        }
-        if (hasDepthStencil) {
-            VkImageCreateInfo depthImageInfo{};
-            depthImageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
-            depthImageInfo.imageType = VK_IMAGE_TYPE_2D;
-            depthImageInfo.extent.width = static_cast<Uint32>(size.x());
-            depthImageInfo.extent.height = static_cast<Uint32>(size.y());
-            depthImageInfo.extent.depth = 1;
-            depthImageInfo.mipLevels = 1;
-            depthImageInfo.arrayLayers = 1;
-            depthImageInfo.format = depthStencilFormat;
-            depthImageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
-            depthImageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-            depthImageInfo.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
-            depthImageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
-            depthImageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-            VK_VERIFY(vkCreateImage(m_device, &depthImageInfo, nullptr, &target.depthStencilImage),
-                      "vkCreateImage(offscreen depth/stencil)");
-
-            VkMemoryRequirements depthMemoryRequirements{};
-            vkGetImageMemoryRequirements(m_device, target.depthStencilImage, &depthMemoryRequirements);
-            VkMemoryAllocateInfo depthAllocInfo{};
-            depthAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-            depthAllocInfo.allocationSize = depthMemoryRequirements.size;
-            depthAllocInfo.memoryTypeIndex =
-                FindMemoryType(depthMemoryRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
-            VK_VERIFY(vkAllocateMemory(m_device, &depthAllocInfo, nullptr, &target.depthStencilMemory),
-                      "vkAllocateMemory(offscreen depth/stencil)");
-            VK_VERIFY(vkBindImageMemory(m_device, target.depthStencilImage, target.depthStencilMemory, 0),
-                      "vkBindImageMemory(offscreen depth/stencil)");
-
-            VkImageAspectFlags depthAspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
-            if (depthStencilFormat == VK_FORMAT_D24_UNORM_S8_UINT ||
-                depthStencilFormat == VK_FORMAT_D32_SFLOAT_S8_UINT) {
-                depthAspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-            }
-            VkImageViewCreateInfo depthViewInfo{};
-            depthViewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-            depthViewInfo.image = target.depthStencilImage;
-            depthViewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-            depthViewInfo.format = depthStencilFormat;
-            depthViewInfo.subresourceRange.aspectMask = depthAspectMask;
-            depthViewInfo.subresourceRange.baseMipLevel = 0;
-            depthViewInfo.subresourceRange.levelCount = 1;
-            depthViewInfo.subresourceRange.baseArrayLayer = 0;
-            depthViewInfo.subresourceRange.layerCount = 1;
-            VK_VERIFY(vkCreateImageView(m_device, &depthViewInfo, nullptr, &target.depthStencilImageView),
-                      "vkCreateImageView(offscreen depth/stencil)");
-        }
-
-        target.layout = VK_IMAGE_LAYOUT_UNDEFINED;
-        target.extent = {static_cast<Uint32>(size.x()), static_cast<Uint32>(size.y())};
-        target.format = format;
-        target.depthStencilLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        target.depthStencilFormat = depthStencilFormat;
-        target.glObjectVersion = glObjectVersion;
-        target.colorTextureExternalIndex = (colorAttachment.IsTexture() && colorAttachment.GetTexture())
-                                               ? colorAttachment.GetTexture()->GetExternalIndex()
-                                               : 0;
-        return true;
-    }
-
-    void VkFramebufferManager::DestroyOffscreenColorTarget(OffscreenColorTarget& target) {
-        if (target.imageView != VK_NULL_HANDLE) {
-            vkDestroyImageView(m_device, target.imageView, nullptr);
-            target.imageView = VK_NULL_HANDLE;
-        }
-        if (target.depthStencilImageView != VK_NULL_HANDLE) {
-            vkDestroyImageView(m_device, target.depthStencilImageView, nullptr);
-            target.depthStencilImageView = VK_NULL_HANDLE;
-        }
-        if (target.image != VK_NULL_HANDLE) {
-            vkDestroyImage(m_device, target.image, nullptr);
-            target.image = VK_NULL_HANDLE;
-        }
-        if (target.depthStencilImage != VK_NULL_HANDLE) {
-            vkDestroyImage(m_device, target.depthStencilImage, nullptr);
-            target.depthStencilImage = VK_NULL_HANDLE;
-        }
-        if (target.memory != VK_NULL_HANDLE) {
-            vkFreeMemory(m_device, target.memory, nullptr);
-            target.memory = VK_NULL_HANDLE;
-        }
-        if (target.depthStencilMemory != VK_NULL_HANDLE) {
-            vkFreeMemory(m_device, target.depthStencilMemory, nullptr);
-            target.depthStencilMemory = VK_NULL_HANDLE;
-        }
-        target.layout = VK_IMAGE_LAYOUT_UNDEFINED;
-        target.depthStencilLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        target.extent = {0, 0};
-        target.format = VK_FORMAT_UNDEFINED;
-        target.depthStencilFormat = VK_FORMAT_UNDEFINED;
-        target.glObjectVersion = 0;
-        target.colorTextureExternalIndex = 0;
-    }
-
-    Bool VkFramebufferManager::TransitionImageLayout(VkCommandBuffer commandBuffer, VkImage image,
-                                                     VkImageLayout& trackedLayout, VkImageLayout newLayout,
-                                                     VkPipelineStageFlags srcStageMask,
-                                                     VkPipelineStageFlags dstStageMask, VkAccessFlags srcAccessMask,
-                                                     VkAccessFlags dstAccessMask, VkImageAspectFlags aspectMask) {
-        if (image == VK_NULL_HANDLE) {
-            return false;
-        }
-        if (trackedLayout == newLayout) {
-            return true;
-        }
-
-        VkImageMemoryBarrier barrier{};
-        barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
-        barrier.srcAccessMask = srcAccessMask;
-        barrier.dstAccessMask = dstAccessMask;
-        barrier.oldLayout = trackedLayout;
-        barrier.newLayout = newLayout;
-        barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-        barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-        barrier.image = image;
-        barrier.subresourceRange.aspectMask = aspectMask;
-        barrier.subresourceRange.baseMipLevel = 0;
-        barrier.subresourceRange.levelCount = 1;
-        barrier.subresourceRange.baseArrayLayer = 0;
-        barrier.subresourceRange.layerCount = 1;
-        vkCmdPipelineBarrier(commandBuffer, srcStageMask, dstStageMask, 0, 0, nullptr, 0, nullptr, 1, &barrier);
-
-        trackedLayout = newLayout;
-        return true;
-    }
-
-    Uint32 VkFramebufferManager::FindMemoryType(Uint32 typeFilter, VkMemoryPropertyFlags properties) const {
-        VkPhysicalDeviceMemoryProperties memoryProperties{};
-        vkGetPhysicalDeviceMemoryProperties(m_physicalDevice, &memoryProperties);
-        for (Uint32 i = 0; i < memoryProperties.memoryTypeCount; ++i) {
-            if ((typeFilter & (1U << i)) &&
-                (memoryProperties.memoryTypes[i].propertyFlags & properties) == properties) {
-                return i;
-            }
-        }
-        MOBILEGL_ASSERT(false, "VkFramebufferManager::FindMemoryType failed");
-        return 0;
-    }
-
-    VkFormat VkFramebufferManager::ResolveColorFormat(
-        const MG_State::GLState::FramebufferAttachmentObject& colorAttachment) {
-        TextureInternalFormat internalFormat = TextureInternalFormat::Unknown;
-        if (colorAttachment.IsTexture()) {
-            const auto texture = colorAttachment.GetTexture();
-            internalFormat = texture ? texture->GetFormat() : TextureInternalFormat::Unknown;
-        } else if (colorAttachment.IsRenderbuffer()) {
-            const auto renderbuffer = colorAttachment.GetRenderbuffer();
-            internalFormat = renderbuffer ? renderbuffer->GetInternalFormat() : TextureInternalFormat::Unknown;
-        }
-
-        switch (internalFormat) {
-        case TextureInternalFormat::RGBA:
-        case TextureInternalFormat::RGBA8:
-        case TextureInternalFormat::SRGB8Alpha8:
-            return VK_FORMAT_R8G8B8A8_UNORM;
-        default:
-            return VK_FORMAT_UNDEFINED;
-        }
-    }
-
-    VkFormat VkFramebufferManager::ResolveDepthStencilFormat(
-        const MG_State::GLState::FramebufferAttachmentObject& depthAttachment,
-        const MG_State::GLState::FramebufferAttachmentObject& stencilAttachment) {
-        const auto resolveAttachmentFormat = [](const MG_State::GLState::FramebufferAttachmentObject& attachment) {
-            TextureInternalFormat internalFormat = TextureInternalFormat::Unknown;
-            if (attachment.IsTexture()) {
-                const auto texture = attachment.GetTexture();
-                internalFormat = texture ? texture->GetFormat() : TextureInternalFormat::Unknown;
-            } else if (attachment.IsRenderbuffer()) {
-                const auto renderbuffer = attachment.GetRenderbuffer();
-                internalFormat = renderbuffer ? renderbuffer->GetInternalFormat() : TextureInternalFormat::Unknown;
-            }
-            return internalFormat;
-        };
-
-        const auto depthFormat = resolveAttachmentFormat(depthAttachment);
-        const auto stencilFormat = resolveAttachmentFormat(stencilAttachment);
-
-        switch (depthFormat) {
-        case TextureInternalFormat::Depth24Stencil8:
-        case TextureInternalFormat::Depth32FStencil8:
-        case TextureInternalFormat::DepthStencil:
-            return VK_FORMAT_D24_UNORM_S8_UINT;
-        case TextureInternalFormat::DepthComponent16:
-            return VK_FORMAT_D16_UNORM;
-        case TextureInternalFormat::DepthComponent24:
-        case TextureInternalFormat::DepthComponent32:
-        case TextureInternalFormat::DepthComponent32F:
-        case TextureInternalFormat::DepthComponent:
-            return VK_FORMAT_D32_SFLOAT;
-        default:
-            break;
-        }
-
-        switch (stencilFormat) {
-        case TextureInternalFormat::Depth24Stencil8:
-        case TextureInternalFormat::Depth32FStencil8:
-        case TextureInternalFormat::DepthStencil:
-            return VK_FORMAT_D24_UNORM_S8_UINT;
-        default:
-            return VK_FORMAT_UNDEFINED;
-        }
-    }
-
-    VkFormat VkFramebufferManager::FindSupportedDepthStencilFormat(const Vector<VkFormat>& candidates) const {
-        for (auto format : candidates) {
-            VkFormatProperties properties{};
-            vkGetPhysicalDeviceFormatProperties(m_physicalDevice, format, &properties);
-            if ((properties.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) != 0) {
-                return format;
-            }
-        }
-        return VK_FORMAT_UNDEFINED;
-    }
-} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.h

@@ -1,83 +0,0 @@
-// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.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 "../VkIncludes.h"
-#include <Includes.h>
-#include <MG_State/GLState/FramebufferState/FramebufferObject.h>
-
-namespace MobileGL::MG_Backend::DirectVulkan {
-    class VkFramebufferManager {
-    public:
-        struct InitInfo {
-            VkDevice device = VK_NULL_HANDLE;
-            VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
-        };
-
-        VkFramebufferManager() = default;
-        ~VkFramebufferManager() = default;
-
-        Bool Initialize(const InitInfo& initInfo);
-        void Shutdown();
-
-        Bool EnsureOffscreenColorTarget(Uint glFboExternalIndex, const MG_State::GLState::FramebufferObject& glFbo);
-        Bool TransitionOffscreenColorToAttachment(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenColorToTransferSrc(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenColorToTransferDst(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenColorToGeneral(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenDepthStencilToTransferSrc(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenDepthStencilToTransferDst(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenDepthStencilToGeneral(VkCommandBuffer commandBuffer, Uint glFboExternalIndex);
-        Bool TransitionOffscreenColorTextureToShaderRead(VkCommandBuffer commandBuffer, Uint textureExternalIndex);
-        Bool GetOffscreenColorImage(Uint glFboExternalIndex, VkImage& outImage, VkExtent2D& outExtent) const;
-        Bool GetOffscreenDepthStencilImage(Uint glFboExternalIndex, VkImage& outImage, VkExtent2D& outExtent,
-                                           VkFormat& outFormat) const;
-        Bool GetOffscreenColorViewByTexture(Uint textureExternalIndex, VkImageView& outImageView) const;
-        Bool GetOffscreenRenderSurface(Uint glFboExternalIndex, VkImageView& outColorView, VkFormat& outColorFormat,
-                                       VkImageView& outDepthStencilView, VkFormat& outDepthStencilFormat,
-                                       VkExtent2D& outExtent) const;
-
-    private:
-        struct OffscreenColorTarget {
-            VkImage image = VK_NULL_HANDLE;
-            VkDeviceMemory memory = VK_NULL_HANDLE;
-            VkImageView imageView = VK_NULL_HANDLE;
-            VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED;
-            VkExtent2D extent = {0, 0};
-            VkFormat format = VK_FORMAT_UNDEFINED;
-            VkImage depthStencilImage = VK_NULL_HANDLE;
-            VkDeviceMemory depthStencilMemory = VK_NULL_HANDLE;
-            VkImageView depthStencilImageView = VK_NULL_HANDLE;
-            VkImageLayout depthStencilLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-            VkFormat depthStencilFormat = VK_FORMAT_UNDEFINED;
-            Uint16 glObjectVersion = 0;
-            Uint colorTextureExternalIndex = 0;
-        };
-
-        Bool RecreateOffscreenColorTarget(OffscreenColorTarget& target,
-                                          const MG_State::GLState::FramebufferObject& glFbo,
-                                          const MG_State::GLState::FramebufferAttachmentObject& colorAttachment,
-                                          Uint16 glObjectVersion);
-        void DestroyOffscreenColorTarget(OffscreenColorTarget& target);
-        Bool TransitionImageLayout(VkCommandBuffer commandBuffer, VkImage image, VkImageLayout& trackedLayout,
-                                   VkImageLayout newLayout, VkPipelineStageFlags srcStageMask,
-                                   VkPipelineStageFlags dstStageMask, VkAccessFlags srcAccessMask,
-                                   VkAccessFlags dstAccessMask, VkImageAspectFlags aspectMask);
-        Uint32 FindMemoryType(Uint32 typeFilter, VkMemoryPropertyFlags properties) const;
-        static VkFormat ResolveColorFormat(const MG_State::GLState::FramebufferAttachmentObject& colorAttachment);
-        static VkFormat ResolveDepthStencilFormat(
-            const MG_State::GLState::FramebufferAttachmentObject& depthAttachment,
-            const MG_State::GLState::FramebufferAttachmentObject& stencilAttachment);
-        VkFormat FindSupportedDepthStencilFormat(const Vector<VkFormat>& candidates) const;
-
-        VkDevice m_device = VK_NULL_HANDLE;
-        VkPhysicalDevice m_physicalDevice = VK_NULL_HANDLE;
-        UnorderedMap<Uint, OffscreenColorTarget> m_offscreenColorTargets;
-    };
-} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.cpp

@@ -8,340 +8,463 @@
 
 #include "VkRenderPassManager.h"
 
+#include "MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.h"
+#include "MG_State/GLState/TextureState/TextureObject2D.h"
+#include "MG_Util/Converters/MGToVk/TextureEnumConverter.h"
+
 namespace MobileGL::MG_Backend::DirectVulkan {
-    Bool VkRenderPassManager::Initialize(const InitInfo& initInfo) {
-        Shutdown();
+    VkRenderPassManager::VkRenderPassManager(VkDevice device,
+        const VulkanRendererConfig& config, VkClearManager& clearManager, VkTextureManager& textureManager,
+        SwapchainObject& swapchainObject):
+        m_device(device), m_config(config), m_clearManager(clearManager), m_textureManager(textureManager),
+        m_swapchainObject(swapchainObject) {
+        RenderPassEntry::s_device = m_device;
+        s_clearManager = &m_clearManager;
+        s_textureManager = &m_textureManager;
+        s_swapchainObject = &m_swapchainObject;
+    }
 
-        if (initInfo.device == VK_NULL_HANDLE || initInfo.colorFormat == VK_FORMAT_UNDEFINED ||
-            initInfo.depthStencilFormat == VK_FORMAT_UNDEFINED) {
-            return false;
-        }
+    VkRenderPassManager::~VkRenderPassManager() {}
 
-        m_device = initInfo.device;
-        m_colorFormat = initInfo.colorFormat;
-        m_depthStencilFormat = initInfo.depthStencilFormat;
-        m_renderPassLoad = CreateDefaultRenderPass(VK_ATTACHMENT_LOAD_OP_LOAD);
-        m_renderPassClear = CreateDefaultRenderPass(VK_ATTACHMENT_LOAD_OP_CLEAR);
-        MGLOG_D("VkRenderPassManager: RenderPasses created (LOAD/CLEAR).");
-        return m_renderPassLoad != VK_NULL_HANDLE && m_renderPassClear != VK_NULL_HANDLE;
+    Bool VkRenderPassManager::Initialize() {
+        return true;
     }
 
     void VkRenderPassManager::Shutdown() {
-        DestroyDefaultFramebuffers();
-        for (auto& [_, target] : m_offscreenRenderTargets) {
-            DestroyOffscreenRenderTarget(target);
-        }
-        m_offscreenRenderTargets.clear();
+    }
 
-        if (m_device != VK_NULL_HANDLE) {
-            if (m_renderPassClear != VK_NULL_HANDLE) {
-                vkDestroyRenderPass(m_device, m_renderPassClear, nullptr);
+    VkRenderPassManager::HashType VkRenderPassManager::ComputeHash(
+        const MG_State::GLState::FramebufferObject& fbo, Uint32 swapchainImageIndex, Bool includePendingClear) const {
+        XXHASH_VERIFY(XXH64_reset(m_hashState, m_config.CacheVersion));
+        const Bool isDefaultFbo = (&fbo == MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo->defaultFBO.get());
+        if (isDefaultFbo) {
+            XXHASH_VERIFY(XXH64_update(m_hashState, &swapchainImageIndex, sizeof(swapchainImageIndex)));
+        }
+        auto& drawBuffers = fbo.GetDrawBuffers();
+        XXHASH_VERIFY(XXH64_update(m_hashState, drawBuffers.data(), drawBuffers.size() * sizeof(drawBuffers[0])));
+        auto readBuffer = fbo.GetReadBuffer();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &readBuffer, sizeof(FramebufferAttachmentType)));
+        Int validDrawBufCount = 0;
+        for (Int i = 0; i < drawBuffers.size(); ++i) {
+            auto drawbuf = drawBuffers[i];
+            if (drawbuf != FramebufferAttachmentType::None)
+                validDrawBufCount = std::max(validDrawBufCount, i + 1);
+        }
+        XXHASH_VERIFY(XXH64_update(m_hashState, &validDrawBufCount, sizeof(validDrawBufCount)));
+
+        auto combineFramebufferAttachmentObjHash = [&](FramebufferAttachmentType attachment) {
+            auto& att = fbo.GetAttachment(attachment);
+
+            Int type = 0;
+            if (att.IsEmpty()) type = 0;
+            else if (att.IsTexture()) type = 1;
+            else if (att.IsRenderbuffer()) type = 2;
+            XXHASH_VERIFY(XXH64_update(m_hashState, &type, sizeof(type)));
+            void* contentPtr = nullptr;
+            if (att.IsTexture())
+                contentPtr = att.GetTexture().get();
+            else if (att.IsRenderbuffer())
+                contentPtr = att.GetRenderbuffer().get();
+            XXHASH_VERIFY(XXH64_update(m_hashState, &contentPtr, sizeof(contentPtr)));
+
+            if (includePendingClear && att.IsTexture()) {
+                auto* texture = att.GetTexture().get();
+                auto hasClear = m_clearManager.HasPendingClear(texture);
+                XXHASH_VERIFY(XXH64_update(m_hashState, &hasClear, sizeof(hasClear)));
+                if (hasClear) {
+                    ClearAttachmentPayload clearPayload{};
+                    Bool hasPayload = m_clearManager.GetPendingClear(texture, clearPayload);
+                    XXHASH_VERIFY(XXH64_update(m_hashState, &hasPayload, sizeof(hasPayload)));
+                    if (hasPayload) {
+                        XXHASH_VERIFY(XXH64_update(
+                            m_hashState, &clearPayload.attachmentType, sizeof(clearPayload.attachmentType)));
+                    }
+                }
+
+                VkImageLayout currentLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+                if (isDefaultFbo) {
+                    if (attachment >= FramebufferAttachmentType::Color0 &&
+                        attachment <= FramebufferAttachmentType::Color31) {
+                        currentLayout = m_swapchainObject.GetImageLayout(swapchainImageIndex);
+                    } else if (attachment == FramebufferAttachmentType::Depth ||
+                               attachment == FramebufferAttachmentType::Stencil) {
+                        currentLayout = m_swapchainObject.GetDepthStencilImageLayout(swapchainImageIndex);
+                    }
+                } else {
+                    auto* resource = m_textureManager.SyncTextureAndGetDescriptor(*texture);
+                    if (resource != nullptr) {
+                        currentLayout = resource->layout;
+                    }
+                }
+                XXHASH_VERIFY(XXH64_update(m_hashState, &currentLayout, sizeof(currentLayout)));
             }
-            if (m_renderPassLoad != VK_NULL_HANDLE) {
-                vkDestroyRenderPass(m_device, m_renderPassLoad, nullptr);
+        };
+
+        for (Int i = 0; i < validDrawBufCount; ++i) {
+            auto drawbuf = drawBuffers[i];
+            combineFramebufferAttachmentObjHash(drawbuf);
+        }
+
+        combineFramebufferAttachmentObjHash(FramebufferAttachmentType::Depth);
+        combineFramebufferAttachmentObjHash(FramebufferAttachmentType::Stencil);
+
+        return XXH64_digest(m_hashState);
+    }
+
+    RenderPassEntry& VkRenderPassManager::GetOrCreateRenderPass(const MG_State::GLState::FramebufferObject& fbo,
+                                                                Uint32 swapchainImageIndex) {
+        // retrieve from cache first
+        auto* activeRenderPass = GetActiveRenderPass();
+        auto compatibilityHash = ComputeHash(fbo, swapchainImageIndex, false);
+        if (activeRenderPass != nullptr && activeRenderPass->CompatibleWith(compatibilityHash)) {
+            auto activeIt = m_renderPasses.find(activeRenderPass->hash);
+            MOBILEGL_ASSERT(activeIt != m_renderPasses.end(),
+                            "GetOrCreateRenderPass: active render pass hash=0x%llx is missing from cache",
+                            static_cast<unsigned long long>(activeRenderPass->hash));
+            return activeIt->second;
+        }
+        auto hash = ComputeHash(fbo, swapchainImageIndex, true);
+        auto it = m_renderPasses.find(hash);
+        if (it != m_renderPasses.end())
+            return it->second;
+
+        Bool isDefaultFbo = (&fbo == MG_Impl::GLImpl::FramebufferImpl::pDefaultFramebufferInfo->defaultFBO.get());
+        // Color attachment
+        auto& drawbufs = fbo.GetDrawBuffers();
+        Int validDrawBufCount = 0;
+        for (Int i = 0; i < drawbufs.size(); ++i) {
+            auto drawbuf = drawbufs[i];
+            if (drawbuf != FramebufferAttachmentType::None)
+                validDrawBufCount = std::max(validDrawBufCount, i + 1);
+        }
+
+        Int width = 0;
+        Int height = 0;
+        Vector<VkAttachmentDescription> attachmentDescriptions(validDrawBufCount);
+        Vector<VkAttachmentReference> colorAttachmentRefs(validDrawBufCount);
+        Vector<PendingClearAttachmentInfo> pendingClearAttachments;
+        Vector<TrackedAttachmentLayoutInfo> trackedAttachmentLayouts;
+        auto& textureResources = RenderPassEntry::s_textureResourcesScratch;
+        textureResources.clear();
+        textureResources.resize(validDrawBufCount, nullptr);
+        Vector<VkImageView> attachmentViews(validDrawBufCount, VK_NULL_HANDLE);
+        // This should automatically work on default & offscreen FBO
+        // assuming default FBO has the right param
+        for (Int i = 0; i < validDrawBufCount; ++i) {
+            auto drawbuf = drawbufs[i];
+            if (drawbuf == FramebufferAttachmentType::None ||
+                fbo.GetAttachment(drawbuf).IsRenderbuffer())
+                continue;
+
+            auto& att = fbo.GetAttachment(drawbuf);
+            auto* texture = att.GetTexture().get();
+            const auto textureTarget = texture->GetTarget();
+
+            // Color attachment description
+            VkAttachmentDescription& desc = attachmentDescriptions[i];
+            switch (textureTarget) {
+                case TextureTarget::Texture2D: {
+                    auto* texture2d =
+                        static_cast<MG_State::GLState::TextureObject2D*>(texture);
+                    desc.flags = 0;
+                    desc.format =
+                        MG_Util::ConvertTextureInternalFormatToVkEnum(
+                            texture2d->GetFormat());
+                    desc.samples = VK_SAMPLE_COUNT_1_BIT;
+                    ClearAttachmentPayload clearPayload{};
+                    Bool hasClear = m_clearManager.GetPendingClear(texture, clearPayload);
+                    VkImageLayout trackedColorLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+                    desc.loadOp = hasClear ?
+                        VK_ATTACHMENT_LOAD_OP_CLEAR :
+                        VK_ATTACHMENT_LOAD_OP_LOAD;
+                    desc.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+                    desc.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+                    desc.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+                    desc.finalLayout = isDefaultFbo ?
+                        VK_IMAGE_LAYOUT_PRESENT_SRC_KHR :
+                        VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+                    if (hasClear) {
+                        pendingClearAttachments.emplace_back(PendingClearAttachmentInfo {
+                            .attachmentIndex = static_cast<Uint32>(i),
+                            .texture = texture
+                        });
+                    }
+                    if (width == 0)
+                        width = texture2d->GetBaseSize().x();
+                    if (height == 0)
+                        height = texture2d->GetBaseSize().y();
+
+                    if (isDefaultFbo) {
+                        const auto& swapchainViews = m_swapchainObject.GetImageViews();
+                        MOBILEGL_ASSERT(swapchainImageIndex < swapchainViews.size(),
+                                        "GetOrCreateRenderPass: swapchain image index out of range");
+                        trackedColorLayout = m_swapchainObject.GetImageLayout(swapchainImageIndex);
+                        trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
+                            .target = TrackedAttachmentTarget::SwapchainColor,
+                            .swapchainImageIndex = swapchainImageIndex,
+                            .finalLayout = desc.finalLayout,
+                        });
+                        attachmentViews[i] = swapchainViews[swapchainImageIndex];
+                    } else {
+                        textureResources[i] = m_textureManager.SyncTextureAndGetDescriptor(*texture);
+                        MOBILEGL_ASSERT(textureResources[i],
+                                        "GetOrCreateRenderPass: SyncTextureAndGetDescriptor failed at color attachment %d", i);
+                        trackedColorLayout = textureResources[i]->layout;
+                        trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
+                            .target = TrackedAttachmentTarget::Texture,
+                            .texture = texture,
+                            .finalLayout = desc.finalLayout,
+                        });
+                        attachmentViews[i] = textureResources[i]->view;
+                    }
+
+                    if (!hasClear && trackedColorLayout == VK_IMAGE_LAYOUT_UNDEFINED) {
+                        MGLOG_W("GetOrCreateRenderPass: color attachment textureId=%d starts with undefined layout and no clear; "
+                                "using LOAD_OP_DONT_CARE",
+                                texture->GetExternalIndex());
+                        desc.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+                    }
+                    desc.initialLayout = (hasClear || trackedColorLayout == VK_IMAGE_LAYOUT_UNDEFINED) ?
+                        VK_IMAGE_LAYOUT_UNDEFINED :
+                        trackedColorLayout;
+
+                    break;
+                }
+                default:
+                    MOBILEGL_ASSERT(false, "Unsupported texture target");
             }
+
+            // Attachment reference
+            VkAttachmentReference& attachmentRef = colorAttachmentRefs[i];
+            attachmentRef.attachment = i;
+            attachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
         }
 
-        m_renderPassClear = VK_NULL_HANDLE;
-        m_renderPassLoad = VK_NULL_HANDLE;
-        m_colorFormat = VK_FORMAT_UNDEFINED;
-        m_depthStencilFormat = VK_FORMAT_UNDEFINED;
-        m_defaultExtent = {0, 0};
-        m_device = VK_NULL_HANDLE;
-    }
-
-    Bool VkRenderPassManager::RecreateDefaultFramebuffers(const Vector<VkImageView>& colorViews,
-                                                          const Vector<VkImageView>& depthStencilViews,
-                                                          VkExtent2D extent) {
-        DestroyDefaultFramebuffers();
-
-        if (m_device == VK_NULL_HANDLE || m_renderPassLoad == VK_NULL_HANDLE || extent.width == 0 ||
-            extent.height == 0 || colorViews.empty() || colorViews.size() != depthStencilViews.size()) {
-            return false;
-        }
-
-        m_defaultFramebuffers.reserve(colorViews.size());
-        for (SizeT i = 0; i < colorViews.size(); ++i) {
-            if (colorViews[i] == VK_NULL_HANDLE || depthStencilViews[i] == VK_NULL_HANDLE) {
-                DestroyDefaultFramebuffers();
-                return false;
+        // Depth attachment description
+        auto& depthAtt = fbo.GetAttachment(FramebufferAttachmentType::Depth);
+        VkAttachmentDescription depthAttachmentDescription;
+        VkAttachmentReference depthAttachmentRef;
+        depthAttachmentRef.attachment = VK_ATTACHMENT_UNUSED;
+        depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+        VkTextureManager::TextureResource* depthTextureResource = nullptr;
+        if (depthAtt.IsComplete() && depthAtt.IsTexture()) {
+            auto& texture = *depthAtt.GetTexture();
+            const Uint32 depthAttachmentIndex = static_cast<Uint32>(attachmentDescriptions.size());
+            ClearAttachmentPayload clearPayload{};
+            Bool hasClear = m_clearManager.GetPendingClear(&texture, clearPayload);
+            Bool clearDepth = hasClear && clearPayload.attachmentType == FramebufferAttachmentType::Depth;
+            Bool clearStencil = hasClear && clearPayload.attachmentType == FramebufferAttachmentType::Stencil;
+            VkImageLayout trackedDepthLayout = isDefaultFbo ?
+                m_swapchainObject.GetDepthStencilImageLayout(swapchainImageIndex) :
+                VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+            if (!isDefaultFbo) {
+                depthTextureResource = m_textureManager.SyncTextureAndGetDescriptor(texture);
+                MOBILEGL_ASSERT(depthTextureResource,
+                                "GetOrCreateRenderPass: SyncTextureAndGetDescriptor failed at depth attachment");
+                trackedDepthLayout = depthTextureResource->layout;
             }
-            VkImageView attachments[] = {colorViews[i], depthStencilViews[i]};
-            VkFramebufferCreateInfo createInfo{VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO};
-            createInfo.renderPass = m_renderPassLoad;
-            createInfo.attachmentCount = static_cast<Uint32>(std::size(attachments));
-            createInfo.pAttachments = attachments;
-            createInfo.width = extent.width;
-            createInfo.height = extent.height;
-            createInfo.layers = 1;
-            VkFramebuffer framebuffer = VK_NULL_HANDLE;
-            if (vkCreateFramebuffer(m_device, &createInfo, nullptr, &framebuffer) != VK_SUCCESS) {
-                DestroyDefaultFramebuffers();
-                return false;
+            depthAttachmentDescription.flags = 0;
+            depthAttachmentDescription.format =
+                MG_Util::ConvertTextureInternalFormatToVkEnum(texture.GetFormat());
+            depthAttachmentDescription.samples = VK_SAMPLE_COUNT_1_BIT;
+            depthAttachmentDescription.loadOp = clearDepth ?
+                VK_ATTACHMENT_LOAD_OP_CLEAR :
+                VK_ATTACHMENT_LOAD_OP_LOAD;
+            depthAttachmentDescription.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+            depthAttachmentDescription.stencilLoadOp = clearStencil ?
+                VK_ATTACHMENT_LOAD_OP_CLEAR :
+                VK_ATTACHMENT_LOAD_OP_LOAD;
+            depthAttachmentDescription.stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
+            depthAttachmentDescription.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+            if (trackedDepthLayout == VK_IMAGE_LAYOUT_UNDEFINED) {
+                if (!clearDepth) {
+                    depthAttachmentDescription.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+                }
+                if (!clearStencil) {
+                    depthAttachmentDescription.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+                }
             }
-            m_defaultFramebuffers.push_back(framebuffer);
-        }
-        m_defaultExtent = extent;
-        return true;
-    }
-
-    Bool VkRenderPassManager::GetDefaultRenderTarget(Uint32 imageIndex, VkRenderPass& outRenderPass,
-                                                     VkFramebuffer& outFramebuffer, VkExtent2D& outExtent,
-                                                     VkFormat& outDepthStencilFormat) const {
-        if (imageIndex >= m_defaultFramebuffers.size() || m_renderPassLoad == VK_NULL_HANDLE) {
-            return false;
-        }
-        outRenderPass = m_renderPassLoad;
-        outFramebuffer = m_defaultFramebuffers[imageIndex];
-        outExtent = m_defaultExtent;
-        outDepthStencilFormat = m_depthStencilFormat;
-        return outFramebuffer != VK_NULL_HANDLE;
-    }
-
-    Bool VkRenderPassManager::EnsureOffscreenRenderTarget(const OffscreenRenderTargetInfo& targetInfo) {
-        if (m_device == VK_NULL_HANDLE || targetInfo.colorView == VK_NULL_HANDLE ||
-            targetInfo.colorFormat == VK_FORMAT_UNDEFINED || targetInfo.extent.width == 0 ||
-            targetInfo.extent.height == 0) {
-            return false;
+            depthAttachmentDescription.initialLayout =
+                (clearDepth && clearStencil) || trackedDepthLayout == VK_IMAGE_LAYOUT_UNDEFINED ?
+                    VK_IMAGE_LAYOUT_UNDEFINED :
+                    trackedDepthLayout;
+            if (hasClear) {
+                pendingClearAttachments.emplace_back(PendingClearAttachmentInfo {
+                    .attachmentIndex = depthAttachmentIndex,
+                    .texture = &texture
+                });
+            }
+            if (isDefaultFbo) {
+                trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
+                    .target = TrackedAttachmentTarget::SwapchainDepthStencil,
+                    .swapchainImageIndex = swapchainImageIndex,
+                    .finalLayout = depthAttachmentDescription.finalLayout,
+                });
+                attachmentViews.emplace_back(m_swapchainObject.GetDepthStencilImageView(swapchainImageIndex));
+            } else {
+                MOBILEGL_ASSERT(clearDepth || clearStencil || depthTextureResource->layout != VK_IMAGE_LAYOUT_UNDEFINED,
+                                "GetOrCreateRenderPass: depth attachment textureId=%d has undefined tracked layout with LOAD_OP_LOAD",
+                                texture.GetExternalIndex());
+                trackedAttachmentLayouts.emplace_back(TrackedAttachmentLayoutInfo {
+                    .target = TrackedAttachmentTarget::Texture,
+                    .texture = &texture,
+                    .finalLayout = depthAttachmentDescription.finalLayout,
+                });
+                textureResources.emplace_back(depthTextureResource);
+                attachmentViews.emplace_back(depthTextureResource->view);
+                if (width == 0 || height == 0) {
+                    auto texture2d = static_cast<MG_State::GLState::TextureObject2D*>(&texture);
+                    width = texture2d->GetBaseSize().x();
+                    height = texture2d->GetBaseSize().y();
+                }
+            }
+            attachmentDescriptions.emplace_back(depthAttachmentDescription);
+            depthAttachmentRef.attachment = depthAttachmentIndex;
         }
 
-        const Bool hasDepthStencil =
-            targetInfo.depthStencilView != VK_NULL_HANDLE && targetInfo.depthStencilFormat != VK_FORMAT_UNDEFINED;
+        // Subpass
+        VkSubpassDescription subpassDesc;
+        subpassDesc.flags = 0;
+        subpassDesc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+        subpassDesc.inputAttachmentCount = 0;
+        subpassDesc.pInputAttachments = nullptr;
+        subpassDesc.colorAttachmentCount = colorAttachmentRefs.size();
+        subpassDesc.pColorAttachments = colorAttachmentRefs.data();
+        subpassDesc.pResolveAttachments = nullptr;
+        subpassDesc.pDepthStencilAttachment = depthAtt.IsComplete() ? &depthAttachmentRef : VK_NULL_HANDLE;
+        subpassDesc.preserveAttachmentCount = 0;
+        subpassDesc.pPreserveAttachments = nullptr;
 
-        auto& target = m_offscreenRenderTargets[targetInfo.targetExternalIndex];
-        if (target.framebuffer != VK_NULL_HANDLE && target.renderPassLoad != VK_NULL_HANDLE &&
-            target.targetVersion == targetInfo.targetVersion && target.colorView == targetInfo.colorView &&
-            target.colorFormat == targetInfo.colorFormat && target.depthStencilView == targetInfo.depthStencilView &&
-            target.depthStencilFormat == targetInfo.depthStencilFormat &&
-            target.extent.width == targetInfo.extent.width && target.extent.height == targetInfo.extent.height) {
-            return true;
-        }
-
-        DestroyOffscreenRenderTarget(target);
-
-        const VkFormat depthStencilFormat = hasDepthStencil ? targetInfo.depthStencilFormat : VK_FORMAT_UNDEFINED;
-        target.renderPassLoad = CreateRenderPass(targetInfo.colorFormat, depthStencilFormat, VK_ATTACHMENT_LOAD_OP_LOAD,
-                                                 VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
-        if (target.renderPassLoad == VK_NULL_HANDLE) {
-            return false;
-        }
-
-        Array<VkImageView, 2> attachments{};
-        attachments[0] = targetInfo.colorView;
-        Uint32 attachmentCount = 1;
-        if (hasDepthStencil) {
-            attachments[1] = targetInfo.depthStencilView;
-            attachmentCount = 2;
-        }
-
-        VkFramebufferCreateInfo framebufferInfo{VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO};
-        framebufferInfo.renderPass = target.renderPassLoad;
-        framebufferInfo.attachmentCount = attachmentCount;
-        framebufferInfo.pAttachments = attachments.data();
-        framebufferInfo.width = targetInfo.extent.width;
-        framebufferInfo.height = targetInfo.extent.height;
-        framebufferInfo.layers = 1;
-        VK_VERIFY(vkCreateFramebuffer(m_device, &framebufferInfo, nullptr, &target.framebuffer),
-                  "vkCreateFramebuffer(offscreen)");
-
-        target.targetVersion = targetInfo.targetVersion;
-        target.colorView = targetInfo.colorView;
-        target.colorFormat = targetInfo.colorFormat;
-        target.depthStencilView = targetInfo.depthStencilView;
-        target.depthStencilFormat = targetInfo.depthStencilFormat;
-        target.extent = targetInfo.extent;
-        return true;
-    }
-
-    Bool VkRenderPassManager::GetOffscreenRenderTarget(Uint targetExternalIndex, VkRenderPass& outRenderPass,
-                                                       VkFramebuffer& outFramebuffer, VkExtent2D& outExtent,
-                                                       VkFormat& outDepthStencilFormat) const {
-        auto it = m_offscreenRenderTargets.find(targetExternalIndex);
-        if (it == m_offscreenRenderTargets.end() || it->second.renderPassLoad == VK_NULL_HANDLE ||
-            it->second.framebuffer == VK_NULL_HANDLE) {
-            return false;
-        }
-
-        outRenderPass = it->second.renderPassLoad;
-        outFramebuffer = it->second.framebuffer;
-        outExtent = it->second.extent;
-        outDepthStencilFormat = it->second.depthStencilFormat;
-        return true;
-    }
-
-    void VkRenderPassManager::RemoveOffscreenRenderTarget(Uint targetExternalIndex) {
-        auto it = m_offscreenRenderTargets.find(targetExternalIndex);
-        if (it == m_offscreenRenderTargets.end()) {
-            return;
-        }
-        DestroyOffscreenRenderTarget(it->second);
-        m_offscreenRenderTargets.erase(it);
-    }
-
-    void VkRenderPassManager::BeginRenderPass(VkCommandBuffer commandBuffer, VkRenderPass renderPass,
-                                              VkFramebuffer framebuffer, VkExtent2D extent) const {
-        VkRenderPassBeginInfo beginInfo{};
-        beginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
-        beginInfo.renderPass = renderPass;
-        beginInfo.framebuffer = framebuffer;
-        beginInfo.renderArea.offset = {0, 0};
-        beginInfo.renderArea.extent = extent;
-        beginInfo.clearValueCount = 0;
-        beginInfo.pClearValues = nullptr;
-        vkCmdBeginRenderPass(commandBuffer, &beginInfo, VK_SUBPASS_CONTENTS_INLINE);
-    }
-
-    void VkRenderPassManager::EndRenderPass(VkCommandBuffer commandBuffer) const {
-        vkCmdEndRenderPass(commandBuffer);
-    }
-
-    void VkRenderPassManager::RecordColorClear(VkCommandBuffer commandBuffer, VkExtent2D extent,
-                                               const VkClearColorValue& clearColor) const {
-        VkClearAttachment clearAttachment{};
-        clearAttachment.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-        clearAttachment.colorAttachment = 0;
-        clearAttachment.clearValue.color = clearColor;
-
-        VkClearRect clearRect{};
-        clearRect.rect.offset = {0, 0};
-        clearRect.rect.extent = extent;
-        clearRect.baseArrayLayer = 0;
-        clearRect.layerCount = 1;
-
-        vkCmdClearAttachments(commandBuffer, 1, &clearAttachment, 1, &clearRect);
-    }
-
-    void VkRenderPassManager::RecordDepthStencilClear(VkCommandBuffer commandBuffer, VkExtent2D extent, GLbitfield mask,
-                                                      Float depth, Uint32 stencil, VkFormat depthStencilFormat) const {
-        if (depthStencilFormat == VK_FORMAT_UNDEFINED) {
-            return;
-        }
-
-        VkImageAspectFlags aspectMask = 0;
-        if ((mask & GL_DEPTH_BUFFER_BIT) != 0) {
-            aspectMask |= VK_IMAGE_ASPECT_DEPTH_BIT;
-        }
-        if ((mask & GL_STENCIL_BUFFER_BIT) != 0 && HasStencilComponent(depthStencilFormat)) {
-            aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-        }
-        if (aspectMask == 0) {
-            return;
-        }
-
-        VkClearAttachment clearAttachment{};
-        clearAttachment.aspectMask = aspectMask;
-        clearAttachment.clearValue.depthStencil.depth = depth;
-        clearAttachment.clearValue.depthStencil.stencil = stencil;
-
-        VkClearRect clearRect{};
-        clearRect.rect.offset = {0, 0};
-        clearRect.rect.extent = extent;
-        clearRect.baseArrayLayer = 0;
-        clearRect.layerCount = 1;
-
-        vkCmdClearAttachments(commandBuffer, 1, &clearAttachment, 1, &clearRect);
-    }
-
-    VkRenderPass VkRenderPassManager::GetLoadRenderPass() const {
-        return m_renderPassLoad;
-    }
-
-    VkRenderPass VkRenderPassManager::GetClearRenderPass() const {
-        return m_renderPassClear;
-    }
-
-    VkRenderPass VkRenderPassManager::CreateDefaultRenderPass(VkAttachmentLoadOp colorLoadOp) const {
-        MOBILEGL_ASSERT(m_device != VK_NULL_HANDLE, "VkRenderPassManager: device is null");
-        MOBILEGL_ASSERT(m_colorFormat != VK_FORMAT_UNDEFINED, "VkRenderPassManager: color format is undefined");
-        MOBILEGL_ASSERT(m_depthStencilFormat != VK_FORMAT_UNDEFINED,
-                        "VkRenderPassManager: depth/stencil format is undefined");
-        return CreateRenderPass(m_colorFormat, m_depthStencilFormat, colorLoadOp, VK_IMAGE_LAYOUT_PRESENT_SRC_KHR);
-    }
-
-    VkRenderPass VkRenderPassManager::CreateRenderPass(VkFormat colorFormat, VkFormat depthStencilFormat,
-                                                       VkAttachmentLoadOp colorLoadOp,
-                                                       VkImageLayout colorFinalLayout) const {
-        VkAttachmentDescription color{};
-        color.format = colorFormat;
-        color.samples = VK_SAMPLE_COUNT_1_BIT;
-        color.loadOp = colorLoadOp;
-        color.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
-        color.initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
-        color.finalLayout = colorFinalLayout;
-        color.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
-        color.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
-
-        const Bool hasDepthStencil = depthStencilFormat != VK_FORMAT_UNDEFINED;
-        VkAttachmentDescription depthStencil{};
-        if (hasDepthStencil) {
-            depthStencil.format = depthStencilFormat;
-            depthStencil.samples = VK_SAMPLE_COUNT_1_BIT;
-            depthStencil.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
-            depthStencil.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
-            depthStencil.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
-            depthStencil.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
-            depthStencil.initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
-            depthStencil.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
-        }
-
-        VkAttachmentReference colorRef{0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL};
-        VkAttachmentReference depthStencilRef{1, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL};
-
-        VkSubpassDescription subpass{};
-        subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
-        subpass.colorAttachmentCount = 1;
-        subpass.pColorAttachments = &colorRef;
-        if (hasDepthStencil) {
-            subpass.pDepthStencilAttachment = &depthStencilRef;
-        }
-
-        Array<VkAttachmentDescription, 2> attachments{};
-        attachments[0] = color;
-        Uint32 attachmentCount = 1;
-        if (hasDepthStencil) {
-            attachments[1] = depthStencil;
-            attachmentCount = 2;
-        }
-
-        VkRenderPassCreateInfo createInfo{VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO};
-        createInfo.attachmentCount = attachmentCount;
-        createInfo.pAttachments = attachments.data();
-        createInfo.subpassCount = 1;
-        createInfo.pSubpasses = &subpass;
+        // Render Pass
+        VkRenderPassCreateInfo renderPassCreateInfo;
+        renderPassCreateInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+        renderPassCreateInfo.pNext = VK_NULL_HANDLE;
+        renderPassCreateInfo.flags = 0;
+        renderPassCreateInfo.attachmentCount = attachmentDescriptions.size();
+        renderPassCreateInfo.pAttachments = attachmentDescriptions.data();
+        renderPassCreateInfo.subpassCount = 1;
+        renderPassCreateInfo.pSubpasses = &subpassDesc;
+        renderPassCreateInfo.dependencyCount = 0;
+        renderPassCreateInfo.pDependencies = nullptr;
 
         VkRenderPass renderPass = VK_NULL_HANDLE;
-        VK_VERIFY(vkCreateRenderPass(m_device, &createInfo, nullptr, &renderPass), "vkCreateRenderPass");
-        return renderPass;
+        VK_VERIFY(vkCreateRenderPass(m_device, &renderPassCreateInfo, nullptr, &renderPass));
+
+        // Framebuffer
+        VkFramebufferCreateInfo framebufferCreateInfo;
+        framebufferCreateInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+        framebufferCreateInfo.pNext = nullptr;
+        framebufferCreateInfo.flags = 0;
+        framebufferCreateInfo.renderPass = renderPass;
+        framebufferCreateInfo.attachmentCount = attachmentViews.size();
+        framebufferCreateInfo.pAttachments = attachmentViews.data();
+        framebufferCreateInfo.width = width;
+        framebufferCreateInfo.height = height;
+        framebufferCreateInfo.layers = 1;
+        VkFramebuffer framebuffer = VK_NULL_HANDLE;
+        VK_VERIFY(vkCreateFramebuffer(m_device, &framebufferCreateInfo, nullptr, &framebuffer));
+        IntVec2 extent = {width, height};
+        RenderPassEntry renderPassEntry {
+            hash,
+            renderPass,
+            framebuffer,
+            compatibilityHash,
+            Move(pendingClearAttachments),
+            Move(trackedAttachmentLayouts),
+            static_cast<Uint32>(attachmentViews.size()),
+            extent,
+            1 };
+        auto [insertedIt, _] = m_renderPasses.emplace(hash, Move(renderPassEntry));
+        return insertedIt->second;
     }
 
-    void VkRenderPassManager::DestroyDefaultFramebuffers() {
-        for (auto framebuffer : m_defaultFramebuffers) {
-            if (framebuffer != VK_NULL_HANDLE) {
-                vkDestroyFramebuffer(m_device, framebuffer, nullptr);
+    Bool VkRenderPassManager::BeginRenderPass(VkCommandBuffer commandBuffer, RenderPassEntry& renderPassEntry) {
+        // TODO: Transition all the attachments into proper layout before starting the render pass
+        VkRenderPassBeginInfo renderPassBeginInfo;
+        renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        renderPassBeginInfo.pNext = nullptr;
+        renderPassBeginInfo.renderPass = renderPassEntry.renderPass;
+        renderPassBeginInfo.framebuffer = renderPassEntry.framebuffer;
+        renderPassBeginInfo.renderArea.offset = { 0, 0 };
+        renderPassBeginInfo.renderArea.extent = {
+            (Uint32)renderPassEntry.extent.x(), (Uint32)renderPassEntry.extent.y() };
+
+        Vector<VkClearValue> clearValues(renderPassEntry.attachmentCount);
+        for (auto& clearValue: clearValues) {
+            clearValue.color = {0.0f, 0.0f, 0.0f, 1.0f};
+            clearValue.depthStencil = {1.0f, 0};
+        }
+        for (const auto& pending: renderPassEntry.pendingClearAttachments) {
+            if (!pending.texture || pending.attachmentIndex >= clearValues.size()) {
+                continue;
+            }
+            ClearAttachmentPayload clearPayload{};
+            if (!s_clearManager->GetPendingClear(pending.texture, clearPayload)) {
+                continue;
+            }
+            if (clearPayload.attachmentType >= FramebufferAttachmentType::Color0 &&
+                clearPayload.attachmentType <= FramebufferAttachmentType::Color31) {
+                clearValues[pending.attachmentIndex].color = {
+                    clearPayload.color.x(),
+                    clearPayload.color.y(),
+                    clearPayload.color.z(),
+                    clearPayload.color.w()
+                };
+            } else if (clearPayload.attachmentType == FramebufferAttachmentType::Depth) {
+                clearValues[pending.attachmentIndex].depthStencil.depth = clearPayload.depth;
+            } else if (clearPayload.attachmentType == FramebufferAttachmentType::Stencil) {
+                clearValues[pending.attachmentIndex].depthStencil.stencil = clearPayload.stencil;
             }
         }
-        m_defaultFramebuffers.clear();
-        m_defaultExtent = {0, 0};
+
+        renderPassBeginInfo.clearValueCount = static_cast<Uint32>(clearValues.size());
+        renderPassBeginInfo.pClearValues = clearValues.data();
+
+        vkCmdBeginRenderPass(commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
+        for (const auto& pending: renderPassEntry.pendingClearAttachments) {
+            s_clearManager->PopPendingClear(pending.texture);
+        }
+        s_activeRenderPass.hash = renderPassEntry.hash;
+        s_activeRenderPass.compatibilityHash = renderPassEntry.compatibilityHash;
+        s_activeRenderPass.trackedAttachmentLayouts = renderPassEntry.trackedAttachmentLayouts;
+        s_activeRenderPass.extent = renderPassEntry.extent;
+        s_hasActiveRenderPass = true;
+
+        return true;
     }
 
-    void VkRenderPassManager::DestroyOffscreenRenderTarget(OffscreenRenderTarget& target) {
-        if (target.framebuffer != VK_NULL_HANDLE) {
-            vkDestroyFramebuffer(m_device, target.framebuffer, nullptr);
-            target.framebuffer = VK_NULL_HANDLE;
+    Bool VkRenderPassManager::EndRenderPass(VkCommandBuffer commandBuffer) {
+        auto* activeRenderPass = GetActiveRenderPass();
+        vkCmdEndRenderPass(commandBuffer);
+        if (activeRenderPass != nullptr && !activeRenderPass->trackedAttachmentLayouts.empty()) {
+            for (const auto& trackedAttachment : activeRenderPass->trackedAttachmentLayouts) {
+                switch (trackedAttachment.target) {
+                    case TrackedAttachmentTarget::Texture:
+                        MOBILEGL_ASSERT(s_textureManager != nullptr, "EndRenderPass: texture manager is null");
+                        s_textureManager->UpdateTrackedImageLayout(trackedAttachment.texture, trackedAttachment.finalLayout);
+                        break;
+                    case TrackedAttachmentTarget::SwapchainColor:
+                        MOBILEGL_ASSERT(s_swapchainObject != nullptr, "EndRenderPass: swapchain object is null");
+                        s_swapchainObject->SetImageLayout(trackedAttachment.swapchainImageIndex, trackedAttachment.finalLayout);
+                        break;
+                    case TrackedAttachmentTarget::SwapchainDepthStencil:
+                        MOBILEGL_ASSERT(s_swapchainObject != nullptr, "EndRenderPass: swapchain object is null");
+                        s_swapchainObject->SetDepthStencilImageLayout(trackedAttachment.swapchainImageIndex,
+                                                                      trackedAttachment.finalLayout);
+                        break;
+                    default:
+                        MOBILEGL_ASSERT(false, "EndRenderPass: unsupported tracked attachment target=%d",
+                                        static_cast<Int>(trackedAttachment.target));
+                        break;
+                }
+            }
         }
-        if (target.renderPassLoad != VK_NULL_HANDLE) {
-            vkDestroyRenderPass(m_device, target.renderPassLoad, nullptr);
-            target.renderPassLoad = VK_NULL_HANDLE;
-        }
-        target.targetVersion = 0;
-        target.colorView = VK_NULL_HANDLE;
-        target.colorFormat = VK_FORMAT_UNDEFINED;
-        target.depthStencilView = VK_NULL_HANDLE;
-        target.depthStencilFormat = VK_FORMAT_UNDEFINED;
-        target.extent = {0, 0};
+        s_activeRenderPass = {};
+        s_hasActiveRenderPass = false;
+        return true;
     }
 
-    Bool VkRenderPassManager::HasStencilComponent(VkFormat format) {
-        return format == VK_FORMAT_D24_UNORM_S8_UINT || format == VK_FORMAT_D32_SFLOAT_S8_UINT;
+    ActiveRenderPassInfo* VkRenderPassManager::GetActiveRenderPass() {
+        return s_hasActiveRenderPass ? &s_activeRenderPass : nullptr;
     }
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.h

@@ -8,79 +8,144 @@
 
 #pragma once
 
+#include "SwapchainObject.h"
+#include "VkClearManager.h"
+#include "VkTextureManager.h"
 #include "../VkIncludes.h"
+#include "../VulkanRendererConfig.h"
+#include "MG_State/GLState/FramebufferState/FramebufferObject.h"
+
 #include <Includes.h>
 
 namespace MobileGL::MG_Backend::DirectVulkan {
+    enum class TrackedAttachmentTarget : Uint8 {
+        Texture,
+        SwapchainColor,
+        SwapchainDepthStencil
+    };
+
+    struct PendingClearAttachmentInfo {
+        Uint32 attachmentIndex = 0;
+        MG_State::GLState::ITextureObject* texture = nullptr;
+    };
+
+    struct TrackedAttachmentLayoutInfo {
+        TrackedAttachmentTarget target = TrackedAttachmentTarget::Texture;
+        MG_State::GLState::ITextureObject* texture = nullptr;
+        Uint32 swapchainImageIndex = 0;
+        VkImageLayout finalLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+    };
+
+    struct RenderPassEntry {
+        static inline VkDevice s_device;
+        static inline Vector<VkTextureManager::TextureResource*> s_textureResourcesScratch;
+        Uint64 hash = 0;
+        VkRenderPass renderPass = VK_NULL_HANDLE;
+        VkFramebuffer framebuffer = VK_NULL_HANDLE;
+        Uint64 compatibilityHash = 0;
+        Vector<PendingClearAttachmentInfo> pendingClearAttachments;
+        Vector<TrackedAttachmentLayoutInfo> trackedAttachmentLayouts;
+        Uint32 attachmentCount = 0;
+        IntVec2 extent = {0, 0};
+        Uint32 subpass = 0;
+
+        RenderPassEntry() = default;
+        RenderPassEntry(const RenderPassEntry&) = delete;
+        RenderPassEntry(RenderPassEntry&& that) noexcept {
+            std::swap(hash, that.hash);
+            std::swap(renderPass, that.renderPass);
+            std::swap(framebuffer, that.framebuffer);
+            std::swap(compatibilityHash, that.compatibilityHash);
+            std::swap(pendingClearAttachments, that.pendingClearAttachments);
+            std::swap(trackedAttachmentLayouts, that.trackedAttachmentLayouts);
+            std::swap(attachmentCount, that.attachmentCount);
+            std::swap(extent, that.extent);
+            std::swap(subpass, that.subpass);
+        }
+        RenderPassEntry(
+            Uint64 hash,
+            VkRenderPass renderpass,
+            VkFramebuffer framebuffer,
+            Uint64 compatibilityHash,
+            const Vector<PendingClearAttachmentInfo>& pendingClearAttachments,
+            const Vector<TrackedAttachmentLayoutInfo>& trackedAttachmentLayouts,
+            Uint32 attachmentCount,
+            IntVec2 extent, int subpass):
+            hash(hash),
+            renderPass(renderpass),
+            framebuffer(framebuffer),
+            compatibilityHash(compatibilityHash),
+            pendingClearAttachments(Move(pendingClearAttachments)),
+            trackedAttachmentLayouts(Move(trackedAttachmentLayouts)),
+            attachmentCount(attachmentCount),
+            extent(extent),
+            subpass(subpass)
+        {}
+
+        ~RenderPassEntry() {
+            if (renderPass != VK_NULL_HANDLE) {
+                vkDestroyRenderPass(s_device, renderPass, nullptr);
+            }
+            if (framebuffer != VK_NULL_HANDLE) {
+                vkDestroyFramebuffer(s_device, framebuffer, nullptr);
+            }
+        }
+
+        Bool CompatibleWith(const RenderPassEntry& that) const {
+            return this->compatibilityHash == that.compatibilityHash;
+        }
+
+        Bool CompatibleWith(Uint64 compatibilityHash) const {
+            return this->compatibilityHash == compatibilityHash;
+        }
+    };
+
+    struct ActiveRenderPassInfo {
+        Uint64 hash = 0;
+        Uint64 compatibilityHash = 0;
+        Vector<TrackedAttachmentLayoutInfo> trackedAttachmentLayouts;
+        IntVec2 extent = {0, 0};
+
+        Bool CompatibleWith(const RenderPassEntry& that) const {
+            return compatibilityHash == that.compatibilityHash;
+        }
+
+        Bool CompatibleWith(Uint64 thatCompatibilityHash) const {
+            return compatibilityHash == thatCompatibilityHash;
+        }
+    };
+
     class VkRenderPassManager {
     public:
-        struct InitInfo {
-            VkDevice device = VK_NULL_HANDLE;
-            VkFormat colorFormat = VK_FORMAT_UNDEFINED;
-            VkFormat depthStencilFormat = VK_FORMAT_UNDEFINED;
-        };
+        using HashType = Uint64;
+        VkRenderPassManager(VkDevice device,
+            const VulkanRendererConfig& config, VkClearManager& clearManager, VkTextureManager& textureManager,
+            SwapchainObject& swapchainObject);
+        ~VkRenderPassManager();
 
-        struct OffscreenRenderTargetInfo {
-            Uint targetExternalIndex = 0;
-            Uint16 targetVersion = 0;
-            VkImageView colorView = VK_NULL_HANDLE;
-            VkFormat colorFormat = VK_FORMAT_UNDEFINED;
-            VkImageView depthStencilView = VK_NULL_HANDLE;
-            VkFormat depthStencilFormat = VK_FORMAT_UNDEFINED;
-            VkExtent2D extent = {0, 0};
-        };
-
-        Bool Initialize(const InitInfo& initInfo);
+        Bool Initialize();
         void Shutdown();
 
-        Bool RecreateDefaultFramebuffers(const Vector<VkImageView>& colorViews,
-                                         const Vector<VkImageView>& depthStencilViews, VkExtent2D extent);
-        Bool GetDefaultRenderTarget(Uint32 imageIndex, VkRenderPass& outRenderPass, VkFramebuffer& outFramebuffer,
-                                    VkExtent2D& outExtent, VkFormat& outDepthStencilFormat) const;
-
-        Bool EnsureOffscreenRenderTarget(const OffscreenRenderTargetInfo& targetInfo);
-        Bool GetOffscreenRenderTarget(Uint targetExternalIndex, VkRenderPass& outRenderPass,
-                                      VkFramebuffer& outFramebuffer, VkExtent2D& outExtent,
-                                      VkFormat& outDepthStencilFormat) const;
-        void RemoveOffscreenRenderTarget(Uint targetExternalIndex);
-
-        void BeginRenderPass(VkCommandBuffer commandBuffer, VkRenderPass renderPass, VkFramebuffer framebuffer,
-                             VkExtent2D extent) const;
-        void EndRenderPass(VkCommandBuffer commandBuffer) const;
-        void RecordColorClear(VkCommandBuffer commandBuffer, VkExtent2D extent,
-                              const VkClearColorValue& clearColor) const;
-        void RecordDepthStencilClear(VkCommandBuffer commandBuffer, VkExtent2D extent, GLbitfield mask, Float depth,
-                                     Uint32 stencil, VkFormat depthStencilFormat) const;
-
-        VkRenderPass GetLoadRenderPass() const;
-        VkRenderPass GetClearRenderPass() const;
-
+        HashType ComputeHash(
+            const MG_State::GLState::FramebufferObject& fbo,
+            Uint32 swapchainImageIndex,
+            Bool includePendingClear = true) const;
+        RenderPassEntry& GetOrCreateRenderPass(const MG_State::GLState::FramebufferObject& fbo, Uint32 swapchainImageIndex);
+        static Bool BeginRenderPass(VkCommandBuffer commandBuffer, RenderPassEntry& renderPassEntry);
+        static Bool EndRenderPass(VkCommandBuffer commandBuffer);
+        static ActiveRenderPassInfo* GetActiveRenderPass();
     private:
-        struct OffscreenRenderTarget {
-            Uint16 targetVersion = 0;
-            VkImageView colorView = VK_NULL_HANDLE;
-            VkFormat colorFormat = VK_FORMAT_UNDEFINED;
-            VkImageView depthStencilView = VK_NULL_HANDLE;
-            VkFormat depthStencilFormat = VK_FORMAT_UNDEFINED;
-            VkExtent2D extent = {0, 0};
-            VkRenderPass renderPassLoad = VK_NULL_HANDLE;
-            VkFramebuffer framebuffer = VK_NULL_HANDLE;
-        };
-
-        VkRenderPass CreateDefaultRenderPass(VkAttachmentLoadOp colorLoadOp) const;
-        VkRenderPass CreateRenderPass(VkFormat colorFormat, VkFormat depthStencilFormat, VkAttachmentLoadOp colorLoadOp,
-                                      VkImageLayout colorFinalLayout) const;
-        void DestroyDefaultFramebuffers();
-        void DestroyOffscreenRenderTarget(OffscreenRenderTarget& target);
-        static Bool HasStencilComponent(VkFormat format);
-
         VkDevice m_device = VK_NULL_HANDLE;
-        VkFormat m_colorFormat = VK_FORMAT_UNDEFINED;
-        VkFormat m_depthStencilFormat = VK_FORMAT_UNDEFINED;
-        VkRenderPass m_renderPassLoad = VK_NULL_HANDLE;
-        VkRenderPass m_renderPassClear = VK_NULL_HANDLE;
-        Vector<VkFramebuffer> m_defaultFramebuffers;
-        VkExtent2D m_defaultExtent = {0, 0};
-        UnorderedMap<Uint, OffscreenRenderTarget> m_offscreenRenderTargets;
+        const VulkanRendererConfig& m_config;
+        VkClearManager& m_clearManager;
+        VkTextureManager& m_textureManager;
+        SwapchainObject& m_swapchainObject;
+        UnorderedMap<Uint64, RenderPassEntry> m_renderPasses;
+        static inline XXH64_state_t* m_hashState = XXH64_createState();
+        static inline ActiveRenderPassInfo s_activeRenderPass{};
+        static inline Bool s_hasActiveRenderPass = false;
+        static inline VkClearManager* s_clearManager = nullptr;
+        static inline VkTextureManager* s_textureManager = nullptr;
+        static inline SwapchainObject* s_swapchainObject = nullptr;
     };
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.cpp

@@ -0,0 +1,156 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.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 "VkSamplerManager.h"
+
+#include "MG_State/GLState/Core.h"
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    Bool VkSamplerManager::Initialize(const InitInfo& initInfo) {
+        Shutdown();
+
+        m_device = initInfo.device;
+        m_config = initInfo.config;
+        MOBILEGL_ASSERT(m_device != VK_NULL_HANDLE && m_config != nullptr,
+                        "VkSamplerManager::Initialize failed: invalid initialization info");
+        return true;
+    }
+
+    void VkSamplerManager::Shutdown() {
+        for (auto& [_, sampler] : m_samplers) {
+            if (m_device != VK_NULL_HANDLE && sampler.handle != VK_NULL_HANDLE) {
+                vkDestroySampler(m_device, sampler.handle, nullptr);
+            }
+            sampler.handle = VK_NULL_HANDLE;
+        }
+        m_samplers.clear();
+
+        m_device = VK_NULL_HANDLE;
+        m_config = nullptr;
+    }
+
+    Uint64 VkSamplerManager::BuildSamplerKey(const MG_State::GLState::SamplerObject& sampler) const {
+        MOBILEGL_ASSERT(m_config != nullptr, "VkSamplerManager::BuildSamplerKey: m_config is null");
+        XXHASH_VERIFY(XXH64_reset(m_hashState, m_config->CacheVersion));
+
+        const auto minFilter = sampler.GetMinFilter();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &minFilter, sizeof(minFilter)));
+        const auto magFilter = sampler.GetMagFilter();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &magFilter, sizeof(magFilter)));
+        const auto mipmapMode = sampler.GetMipmapMode();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &mipmapMode, sizeof(mipmapMode)));
+        const auto wrapS = sampler.GetWrapS();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &wrapS, sizeof(wrapS)));
+        const auto wrapT = sampler.GetWrapT();
+        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 minLod = sampler.GetMinLod();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &minLod, sizeof(minLod)));
+        const auto maxLod = sampler.GetMaxLod();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &maxLod, sizeof(maxLod)));
+        const auto lodBias = sampler.GetLodBias();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &lodBias, sizeof(lodBias)));
+        const auto compareMode = sampler.GetCompareMode();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &compareMode, sizeof(compareMode)));
+        const auto compareFunc = sampler.GetSamplerCompareFunc();
+        XXHASH_VERIFY(XXH64_update(m_hashState, &compareFunc, sizeof(compareFunc)));
+        return XXH64_digest(m_hashState);
+    }
+
+    VkSampler VkSamplerManager::GetOrCreateSampler(const MG_State::GLState::SamplerObject& sampler) {
+        const Uint64 key = BuildSamplerKey(sampler);
+        auto it = m_samplers.find(key);
+        if (it != m_samplers.end()) {
+            return it->second.handle;
+        }
+
+        VkSamplerCreateInfo samplerInfo{};
+        samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
+        samplerInfo.magFilter = ToVkFilter(sampler.GetMagFilter());
+        samplerInfo.minFilter = ToVkFilter(sampler.GetMinFilter());
+        samplerInfo.mipmapMode = ToVkMipmapMode(sampler.GetMipmapMode());
+        samplerInfo.addressModeU = ToVkAddressMode(sampler.GetWrapS());
+        samplerInfo.addressModeV = ToVkAddressMode(sampler.GetWrapT());
+        samplerInfo.addressModeW = ToVkAddressMode(sampler.GetWrapR());
+        samplerInfo.mipLodBias = sampler.GetLodBias();
+        samplerInfo.anisotropyEnable = VK_FALSE;
+        samplerInfo.maxAnisotropy = 1.0f;
+        samplerInfo.compareEnable = sampler.GetCompareMode() == SamplerCompareMode::CompareToTexture ? VK_TRUE : VK_FALSE;
+        samplerInfo.compareOp = ToVkCompareOp(sampler.GetSamplerCompareFunc());
+        samplerInfo.minLod = sampler.GetMinLod();
+        samplerInfo.maxLod = sampler.GetMaxLod();
+        samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK;
+        samplerInfo.unnormalizedCoordinates = VK_FALSE;
+
+        VkSampler vkSampler = VK_NULL_HANDLE;
+        VK_VERIFY(vkCreateSampler(m_device, &samplerInfo, nullptr, &vkSampler), "vkCreateSampler(texture)");
+
+        SamplerCacheEntry entry{};
+        entry.handle = vkSampler;
+        entry.externalIndex = sampler.GetExternalIndex();
+        entry.version = sampler.GetVersion();
+        m_samplers[key] = entry;
+        return vkSampler;
+    }
+
+    VkFilter VkSamplerManager::ToVkFilter(SamplerFilterMode mode) {
+        return mode == SamplerFilterMode::Nearest ? VK_FILTER_NEAREST : VK_FILTER_LINEAR;
+    }
+
+    VkSamplerMipmapMode VkSamplerManager::ToVkMipmapMode(SamplerMipmapMode mode) {
+        switch (mode) {
+        case SamplerMipmapMode::Nearest:
+            return VK_SAMPLER_MIPMAP_MODE_NEAREST;
+        case SamplerMipmapMode::Linear:
+            return VK_SAMPLER_MIPMAP_MODE_LINEAR;
+        case SamplerMipmapMode::None:
+        default:
+            return VK_SAMPLER_MIPMAP_MODE_NEAREST;
+        }
+    }
+
+    VkSamplerAddressMode VkSamplerManager::ToVkAddressMode(SamplerWrapMode mode) {
+        switch (mode) {
+        case SamplerWrapMode::ClampToEdge:
+            return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+        case SamplerWrapMode::MirroredRepeat:
+            return VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
+        case SamplerWrapMode::Repeat:
+            return VK_SAMPLER_ADDRESS_MODE_REPEAT;
+        case SamplerWrapMode::ClampToBorder:
+            return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER;
+        case SamplerWrapMode::MirrorClampToEdge:
+            return VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE;
+        default:
+            return VK_SAMPLER_ADDRESS_MODE_REPEAT;
+        }
+    }
+
+    VkCompareOp VkSamplerManager::ToVkCompareOp(SamplerCompareFunc func) {
+        switch (func) {
+        case SamplerCompareFunc::Never:
+            return VK_COMPARE_OP_NEVER;
+        case SamplerCompareFunc::Less:
+            return VK_COMPARE_OP_LESS;
+        case SamplerCompareFunc::Equal:
+            return VK_COMPARE_OP_EQUAL;
+        case SamplerCompareFunc::LessEqual:
+            return VK_COMPARE_OP_LESS_OR_EQUAL;
+        case SamplerCompareFunc::Greater:
+            return VK_COMPARE_OP_GREATER;
+        case SamplerCompareFunc::NotEqual:
+            return VK_COMPARE_OP_NOT_EQUAL;
+        case SamplerCompareFunc::GreaterEqual:
+            return VK_COMPARE_OP_GREATER_OR_EQUAL;
+        case SamplerCompareFunc::Always:
+        default:
+            return VK_COMPARE_OP_ALWAYS;
+        }
+    }
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.h

@@ -0,0 +1,51 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.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 "../VkIncludes.h"
+#include "../VulkanRendererConfig.h"
+#include <Includes.h>
+#include <MG_State/GLState/SamplerState/SamplerObject.h>
+
+namespace MobileGL::MG_State::GLState {
+class SamplerObject;
+}
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+class VkSamplerManager {
+public:
+    struct InitInfo {
+        VkDevice device = VK_NULL_HANDLE;
+        const VulkanRendererConfig* config = nullptr;
+    };
+
+    Bool Initialize(const InitInfo& initInfo);
+    void Shutdown();
+
+    VkSampler GetOrCreateSampler(const MG_State::GLState::SamplerObject& sampler);
+
+private:
+    struct SamplerCacheEntry {
+        VkSampler handle = VK_NULL_HANDLE;
+        Uint externalIndex = 0;
+        Uint16 version = 0;
+    };
+
+    Uint64 BuildSamplerKey(const MG_State::GLState::SamplerObject& sampler) const;
+    static VkFilter ToVkFilter(SamplerFilterMode mode);
+    static VkSamplerMipmapMode ToVkMipmapMode(SamplerMipmapMode mode);
+    static VkSamplerAddressMode ToVkAddressMode(SamplerWrapMode mode);
+    static VkCompareOp ToVkCompareOp(SamplerCompareFunc func);
+
+    VkDevice m_device = VK_NULL_HANDLE;
+    const VulkanRendererConfig* m_config = nullptr;
+    UnorderedMap<Uint64, SamplerCacheEntry> m_samplers;
+    static inline XXH64_state_t* m_hashState = XXH64_createState();
+};
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.cpp

@@ -0,0 +1,526 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.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 "VkTextureManager.h"
+
+#include "MG_State/GLState/Core.h"
+#include "MG_Util/Converters/MGToVk/TextureEnumConverter.h"
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    static constexpr VkPipelineStageFlags kGraphicsSampledReadStages = VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT;
+
+    static Bool IsValidSampledImageLayout(VkImageLayout layout) {
+        switch (layout) {
+        case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
+        case VK_IMAGE_LAYOUT_GENERAL:
+        case VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL:
+        case VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL:
+        case VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL:
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    Bool VkTextureManager::Initialize(const InitInfo& initInfo) {
+        Shutdown();
+
+        m_device = initInfo.device;
+        m_physicalDevice = initInfo.physicalDevice;
+        m_allocator = initInfo.allocator;
+        m_commandPool = initInfo.commandPool;
+        m_graphicsQueue = initInfo.graphicsQueue;
+
+        MOBILEGL_ASSERT(m_device != VK_NULL_HANDLE && m_physicalDevice != VK_NULL_HANDLE && m_allocator != nullptr &&
+                            m_commandPool != VK_NULL_HANDLE && m_graphicsQueue != VK_NULL_HANDLE,
+                        "VkTextureManager::Initialize failed: invalid initialization info");
+
+        TextureResource::s_device = m_device;
+        TextureResource::s_allocator = m_allocator;
+
+        return true;
+    }
+
+    void VkTextureManager::Shutdown() {
+        m_textureResources.clear();
+
+        m_device = VK_NULL_HANDLE;
+        m_physicalDevice = VK_NULL_HANDLE;
+        m_allocator = nullptr;
+        m_commandPool = VK_NULL_HANDLE;
+        m_graphicsQueue = VK_NULL_HANDLE;
+    }
+
+    VkTextureManager::TextureResource* VkTextureManager::SyncTextureAndGetDescriptor(MG_State::GLState::ITextureObject& texture) {
+        MOBILEGL_ASSERT(m_device != VK_NULL_HANDLE, "SyncTextureAndGetDescriptor: m_device == VK_NULL_HANDLE");
+
+        auto it = m_textureResources.find(&texture);
+        if (it == m_textureResources.end()) {
+            TextureResource initial{};
+            auto [insertIt, _] = m_textureResources.emplace(&texture, Move(initial));
+            it = insertIt;
+        }
+
+        if (!SyncTexture(texture, it->second)) {
+            MGLOG_D("%s: Syncing texture %d failed", __func__, texture.GetExternalIndex());
+            return nullptr;
+        }
+
+        return &(it->second);
+    }
+
+    void VkTextureManager::UpdateTrackedImageLayout(MG_State::GLState::ITextureObject* texture, VkImageLayout newLayout) {
+        MOBILEGL_ASSERT(texture != nullptr, "UpdateTrackedImageLayout: texture is null");
+        auto it = m_textureResources.find(texture);
+        MOBILEGL_ASSERT(it != m_textureResources.end(),
+                        "UpdateTrackedImageLayout: textureId=%d has no tracked resource", texture->GetExternalIndex());
+        MOBILEGL_ASSERT(it->second.image != VK_NULL_HANDLE,
+                        "UpdateTrackedImageLayout: textureId=%d has null image", texture->GetExternalIndex());
+        it->second.layout = newLayout;
+    }
+
+    Bool VkTextureManager::TransitionTextureForSampling(VkCommandBuffer commandBuffer, MG_State::GLState::ITextureObject& texture) {
+        TextureResource* resource = SyncTextureAndGetDescriptor(texture);
+        if (resource == nullptr) {
+            return false;
+        }
+        if (IsValidSampledImageLayout(resource->layout)) {
+            return true;
+        }
+        if (resource->layout == VK_IMAGE_LAYOUT_UNDEFINED) {
+            MGLOG_W("TransitionTextureForSampling: textureId=%d is still in VK_IMAGE_LAYOUT_UNDEFINED before sampling",
+                    texture.GetExternalIndex());
+        }
+
+        VkImageLayout targetLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        VkPipelineStageFlags srcStageMask = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
+        VkAccessFlags srcAccessMask = 0;
+        if ((resource->aspect & VK_IMAGE_ASPECT_COLOR_BIT) != 0) {
+            MOBILEGL_ASSERT(resource->layout == VK_IMAGE_LAYOUT_UNDEFINED ||
+                            resource->layout == VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
+                            "TransitionTextureForSampling: unsupported color layout=%d for textureId=%d",
+                            static_cast<Int>(resource->layout), texture.GetExternalIndex());
+            if (resource->layout == VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL) {
+                srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+                srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+            }
+            targetLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        } else if ((resource->aspect & (VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT)) != 0) {
+            MOBILEGL_ASSERT(resource->layout == VK_IMAGE_LAYOUT_UNDEFINED ||
+                            resource->layout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
+                            "TransitionTextureForSampling: unsupported depth/stencil layout=%d for textureId=%d",
+                            static_cast<Int>(resource->layout), texture.GetExternalIndex());
+            if (resource->layout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
+                srcStageMask = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
+                srcAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
+            }
+            targetLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL;
+        } else {
+            MOBILEGL_ASSERT(false, "TransitionTextureForSampling: unsupported aspect mask=0x%x for textureId=%d",
+                            static_cast<Uint32>(resource->aspect), texture.GetExternalIndex());
+        }
+
+        const Bool ok = TransitionImageLayout(commandBuffer, resource->image, resource->layout, targetLayout, srcStageMask,
+                                              kGraphicsSampledReadStages, srcAccessMask,
+                                              VK_ACCESS_SHADER_READ_BIT, resource->aspect);
+        MOBILEGL_ASSERT(ok, "TransitionTextureForSampling: transition failed for textureId=%d", texture.GetExternalIndex());
+        return ok;
+    }
+
+    Bool VkTextureManager::TransitionImageLayout(VkCommandBuffer commandBuffer, VkImage image,
+                                                 VkImageLayout& trackedLayout, VkImageLayout newLayout,
+                                                 VkPipelineStageFlags srcStageMask, VkPipelineStageFlags dstStageMask,
+                                                 VkAccessFlags srcAccessMask, VkAccessFlags dstAccessMask,
+                                                 VkImageAspectFlags aspectMask) {
+        MOBILEGL_ASSERT(image != VK_NULL_HANDLE, "TransitionImageLayout: m_image == VK_NULL_HANDLE");
+        MOBILEGL_ASSERT(!((dstAccessMask & VK_ACCESS_TRANSFER_READ_BIT) != 0 &&
+                          (dstStageMask & VK_PIPELINE_STAGE_TRANSFER_BIT) == 0),
+                        "TransitionImageLayout: invalid dstAccess/dstStage pair (dstAccess=0x%x, dstStage=0x%x, oldLayout=%d, newLayout=%d)",
+                        static_cast<Uint32>(dstAccessMask), static_cast<Uint32>(dstStageMask), static_cast<Int>(trackedLayout),
+                        static_cast<Int>(newLayout));
+
+        if (trackedLayout == newLayout) {
+            return true;
+        }
+
+        VkImageMemoryBarrier barrier{};
+        barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
+        barrier.srcAccessMask = srcAccessMask;
+        barrier.dstAccessMask = dstAccessMask;
+        barrier.oldLayout = trackedLayout;
+        barrier.newLayout = newLayout;
+        barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        barrier.image = image;
+        barrier.subresourceRange.aspectMask = aspectMask;
+        barrier.subresourceRange.baseMipLevel = 0;
+        barrier.subresourceRange.levelCount = 1;
+        barrier.subresourceRange.baseArrayLayer = 0;
+        barrier.subresourceRange.layerCount = 1;
+        vkCmdPipelineBarrier(commandBuffer, srcStageMask, dstStageMask, 0, 0, nullptr, 0, nullptr, 1, &barrier);
+
+        trackedLayout = newLayout;
+        return true;
+    }
+
+    SizeT VkTextureManager::CollectGarbage() {
+        m_gcCounter++;
+        if (m_gcCounter != 0) {
+            return 0;
+        }
+        SizeT count = 0;
+        for (const auto& [raw, weak]: m_aliveObjects) {
+            if (weak.expired()) {
+                count++;
+                m_textureResources.erase(raw);
+                m_aliveObjects.erase(raw);
+            }
+        }
+        return count;
+    }
+
+    Bool VkTextureManager::SyncTexture(MG_State::GLState::ITextureObject &texture,
+                                       TextureResource &outResource) {
+        TextureUploadTarget uploadTarget = TextureUploadTarget::Unknown;
+        IntVec3 texelSize{0, 0, 0};
+        SizeT byteSize = 0;
+        Uint32 mipLevelCount = 0;
+        if (!CheckMipmapCompleteness(texture, uploadTarget, texelSize, byteSize, mipLevelCount)) {
+            MGLOG_D("%s: mipmap not complete", __func__);
+            return false;
+        }
+
+        auto* mipTexture = dynamic_cast<MG_State::GLState::TextureObjectMipmap*>(&texture);
+        if (!mipTexture) {
+            MGLOG_D("%s: not TextureObjectMipmap", __func__);
+            return false;
+        }
+
+        if (!SyncTextureResource(texture, uploadTarget, texelSize, byteSize, mipLevelCount, outResource)) {
+            MGLOG_D("%s: SyncTextureResource failed", __func__);
+            return false;
+        }
+
+        Bool hasDirtyMipLevel = false;
+        for (Uint32 level = 0; level < mipLevelCount; ++level) {
+            if (mipTexture->IsStorageDirty(uploadTarget, level)) {
+                hasDirtyMipLevel = true;
+                break;
+            }
+        }
+        if (!hasDirtyMipLevel) {
+            return true;
+        }
+
+        if (!UploadDirtyMipLevels(*mipTexture, uploadTarget, outResource)) {
+            MGLOG_D("%s: UploadDirtyMipLevels failed", __func__);
+            return false;
+        }
+        return true;
+    }
+
+    Bool VkTextureManager::SyncTextureResource(const MG_State::GLState::ITextureObject &texture,
+                                               TextureUploadTarget uploadTarget,
+                                               const IntVec3 &texelSize, SizeT byteSize, Uint32 mipLevels,
+                                               TextureResource &resource) {
+        const VkFormat format = MG_Util::ConvertTextureInternalFormatToVkEnum(texture.GetFormat());
+        if (format == VK_FORMAT_UNDEFINED) {
+            MGLOG_D("%s: format == VK_FORMAT_UNDEFINED", __func__);
+            return false;
+        }
+        if (texelSize.x() <= 0 || texelSize.y() <= 0 /*|| byteSize == 0*/) {
+            MGLOG_D("%s: texelSize or byteSize is zero", __func__);
+            return false;
+        }
+        if (mipLevels == 0) {
+            MGLOG_D("%s: no mip levels", __func__);
+            return false;
+        }
+        if (uploadTarget != TextureUploadTarget::Texture2D) {
+            MGLOG_D("%s: not Texture2D, unsupported", __func__);
+            return false;
+        }
+
+        const Bool compatible = resource.image != VK_NULL_HANDLE && resource.format == format &&
+                                resource.extent.width == static_cast<Uint32>(texelSize.x()) &&
+                                resource.extent.height == static_cast<Uint32>(texelSize.y()) &&
+                                resource.mipLevels == mipLevels;
+        if (compatible) {
+            return true;
+        }
+
+         resource.Reset();
+
+        auto aspect = GetAspectMaskForFormat(format);
+
+        VkImageCreateInfo imageInfo{};
+        imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
+        imageInfo.imageType = VK_IMAGE_TYPE_2D;
+        imageInfo.extent.width = static_cast<Uint32>(texelSize.x());
+        imageInfo.extent.height = static_cast<Uint32>(texelSize.y());
+        imageInfo.extent.depth = 1;
+        imageInfo.mipLevels = mipLevels;
+        imageInfo.arrayLayers = 1;
+        imageInfo.format = format;
+        imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
+        imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+        imageInfo.usage =
+            VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
+            ((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);
+        imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
+        imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        VmaAllocationCreateInfo allocationInfo{};
+        allocationInfo.usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE;
+        allocationInfo.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
+        VK_VERIFY(vmaCreateImage(m_allocator, &imageInfo, &allocationInfo, &resource.image, &resource.allocation, nullptr),
+                  "vmaCreateImage(texture)");
+
+        VkImageViewCreateInfo viewInfo{};
+        viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+        viewInfo.image = resource.image;
+        viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
+        viewInfo.format = format;
+        viewInfo.subresourceRange.aspectMask = aspect;
+        viewInfo.subresourceRange.baseMipLevel = 0;
+        viewInfo.subresourceRange.levelCount = mipLevels;
+        viewInfo.subresourceRange.baseArrayLayer = 0;
+        viewInfo.subresourceRange.layerCount = 1;
+        VK_VERIFY(vkCreateImageView(m_device, &viewInfo, nullptr, &resource.view), "vkCreateImageView(texture)");
+
+        resource.layout = VK_IMAGE_LAYOUT_UNDEFINED;
+        resource.extent = {static_cast<Uint32>(texelSize.x()), static_cast<Uint32>(texelSize.y())};
+        resource.mipLevels = mipLevels;
+        resource.format = format;
+        resource.aspect = viewInfo.subresourceRange.aspectMask;
+        return true;
+    }
+
+    Bool VkTextureManager::UploadDirtyMipLevels(MG_State::GLState::TextureObjectMipmap &mipmapTexture,
+                                        TextureUploadTarget uploadTarget,
+                                        TextureResource &outResource) {
+        struct UploadItem {
+            Uint32 level = 0;
+            SizeT byteSize = 0;
+            IntVec3 texelSize = {0, 0, 0};
+            const void* source = nullptr;
+            VkDeviceSize offset = 0;
+        };
+
+        Vector<UploadItem> uploadItems;
+        uploadItems.reserve(outResource.mipLevels);
+
+        VkDeviceSize stagingSize = 0;
+        for (Uint32 level = 0; level < outResource.mipLevels; ++level) {
+            if (!mipmapTexture.IsStorageDirty(uploadTarget, level)) {
+                continue;
+            }
+
+            const auto texelSize = mipmapTexture.GetMipmapTexelSize(uploadTarget, level);
+            const auto byteSize = mipmapTexture.GetMipmapByteSize(uploadTarget, level);
+            if (texelSize.x() <= 0 || texelSize.y() <= 0 || byteSize == 0) {
+                mipmapTexture.MarkStorageDirty(uploadTarget, level, false);
+                continue;
+            }
+
+            const void* source = mipmapTexture.MapMipmapData(uploadTarget, level);
+            if (source == nullptr) {
+                MGLOG_D("%s: MapmipmapData failed at level %d", __func__, level);
+                return false;
+            }
+
+            uploadItems.push_back({level, byteSize, texelSize, source, stagingSize});
+            stagingSize += static_cast<VkDeviceSize>(byteSize);
+        }
+
+        if (uploadItems.empty()) {
+            return true;
+        }
+
+        VkBuffer stagingBuffer = VK_NULL_HANDLE;
+        VmaAllocation stagingAllocation = nullptr;
+
+        VkBufferCreateInfo bufferInfo{};
+        bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+        bufferInfo.size = stagingSize;
+        bufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
+        bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        VmaAllocationCreateInfo stagingAllocationInfo{};
+        stagingAllocationInfo.usage = VMA_MEMORY_USAGE_AUTO_PREFER_HOST;
+        stagingAllocationInfo.flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT;
+        stagingAllocationInfo.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
+        VK_VERIFY(vmaCreateBuffer(m_allocator, &bufferInfo, &stagingAllocationInfo, &stagingBuffer, &stagingAllocation, nullptr),
+                  "vmaCreateBuffer(staging texture)");
+
+        void* mapped = nullptr;
+        VK_VERIFY(vmaMapMemory(m_allocator, stagingAllocation, &mapped), "vmaMapMemory(staging texture)");
+        for (const auto& item : uploadItems) {
+            std::memcpy(static_cast<Uint8*>(mapped) + item.offset, item.source, item.byteSize);
+        }
+        vmaUnmapMemory(m_allocator, stagingAllocation);
+
+        VkCommandBufferAllocateInfo allocInfo{};
+        allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+        allocInfo.commandPool = m_commandPool;
+        allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+        allocInfo.commandBufferCount = 1;
+
+        VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
+        VK_VERIFY(vkAllocateCommandBuffers(m_device, &allocInfo, &commandBuffer), "vkAllocateCommandBuffers(texture)");
+
+        VkCommandBufferBeginInfo beginInfo{};
+        beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        VK_VERIFY(vkBeginCommandBuffer(commandBuffer, &beginInfo), "vkBeginCommandBuffer(texture)");
+
+        const VkImageAspectFlags aspectMask = GetAspectMaskForFormat(outResource.format);
+        Bool ok = TransitionImageLayout(commandBuffer, outResource.image,
+                              outResource.layout,
+                              VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
+                              outResource.layout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL ?
+                                  kGraphicsSampledReadStages :
+                                  VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+                              VK_PIPELINE_STAGE_TRANSFER_BIT,
+                              outResource.layout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL ? VK_ACCESS_SHADER_READ_BIT : 0,
+                              VK_ACCESS_TRANSFER_WRITE_BIT,
+                              aspectMask);
+        MOBILEGL_ASSERT(ok, "TransitionImageLayout to VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL failed");
+
+        for (const auto& item : uploadItems) {
+            VkBufferImageCopy copy{};
+            copy.bufferOffset = item.offset;
+            copy.bufferRowLength = 0;
+            copy.bufferImageHeight = 0;
+            copy.imageSubresource.aspectMask = aspectMask;
+            copy.imageSubresource.mipLevel = item.level;
+            copy.imageSubresource.baseArrayLayer = 0;
+            copy.imageSubresource.layerCount = 1;
+            copy.imageOffset = {0, 0, 0};
+            copy.imageExtent = {static_cast<Uint32>(item.texelSize.x()), static_cast<Uint32>(item.texelSize.y()), 1};
+            vkCmdCopyBufferToImage(commandBuffer, stagingBuffer, outResource.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
+                                   1, &copy);
+        }
+
+        ok = TransitionImageLayout(commandBuffer, outResource.image,
+                                        outResource.layout,
+                                        VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
+                                        VK_PIPELINE_STAGE_TRANSFER_BIT,
+                                        kGraphicsSampledReadStages,
+                                        VK_ACCESS_TRANSFER_WRITE_BIT,
+                                        VK_ACCESS_SHADER_READ_BIT,
+                                        aspectMask);
+        MOBILEGL_ASSERT(ok, "TransitionImageLayout to VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL failed");
+        outResource.layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+
+        VK_VERIFY(vkEndCommandBuffer(commandBuffer), "vkEndCommandBuffer(texture)");
+
+        VkSubmitInfo submitInfo{};
+        submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        submitInfo.commandBufferCount = 1;
+        submitInfo.pCommandBuffers = &commandBuffer;
+
+        VkFenceCreateInfo fenceInfo{};
+        fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
+        VkFence uploadFence = VK_NULL_HANDLE;
+        VK_VERIFY(vkCreateFence(m_device, &fenceInfo, nullptr, &uploadFence), "vkCreateFence(texture upload)");
+
+        VK_VERIFY(vkQueueSubmit(m_graphicsQueue, 1, &submitInfo, uploadFence), "vkQueueSubmit(texture)");
+        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__);
+            return false;
+        }
+        for (const auto& item : uploadItems) {
+            mipmapTexture.MarkStorageDirty(uploadTarget, item.level, false);
+        }
+        outResource.layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        return true;
+    }
+
+    Bool VkTextureManager::CheckMipmapCompleteness(const MG_State::GLState::ITextureObject& texture,
+                                                   TextureUploadTarget& outTarget,
+                                                   IntVec3& outTexelSize,
+                                                   SizeT& outByteSize,
+                                                   Uint32& outMipLevelCount) {
+        const auto* mipTexture = dynamic_cast<const MG_State::GLState::TextureObjectMipmap*>(&texture);
+        if (!mipTexture) {
+            MGLOG_D("%s: not TextureObjectMipmap", __func__);
+            return false;
+        }
+        const auto& targets = texture.GetUploadTargets();
+        if (targets.empty()) {
+            MGLOG_D("%s: upload target empty", __func__);
+            return false;
+        }
+
+        for (const auto target : targets) {
+            const Uint32 mipLevelCount = GetUploadMipLevelCount(*mipTexture, target);
+            if (mipLevelCount == 0) {
+                MGLOG_D("%s: mipLevelCount == 0", __func__);
+                continue;
+            }
+
+            const auto level0TexelSize = mipTexture->GetMipmapTexelSize(target, 0);
+            const auto level0ByteSize = mipTexture->GetMipmapByteSize(target, 0);
+            if (level0TexelSize.x() <= 0 || level0TexelSize.y() <= 0 /*|| level0ByteSize == 0*/) {
+                continue;
+            }
+
+            outTarget = target;
+            outTexelSize = level0TexelSize;
+            outByteSize = level0ByteSize;
+            outMipLevelCount = mipLevelCount;
+            return true;
+        }
+        MGLOG_D("%s: no valid target or mipmap", __func__);
+        return false;
+    }
+
+    Uint32 VkTextureManager::GetUploadMipLevelCount(const MG_State::GLState::TextureObjectMipmap& texture,
+                                                    TextureUploadTarget target) {
+        const Uint totalLevelCount = texture.GetMipmapLevelCount();
+        if (totalLevelCount == 0) {
+            return 0;
+        }
+
+        Uint32 validLevelCount = 0;
+        for (Uint level = 0; level < totalLevelCount; ++level) {
+            const auto size = texture.GetMipmapTexelSize(target, level);
+            const auto byteSize = texture.GetMipmapByteSize(target, level);
+            if (size.x() <= 0 || size.y() <= 0 /*|| byteSize == 0*/) {
+                break;
+            }
+            ++validLevelCount;
+        }
+        return validLevelCount;
+    }
+
+    VkImageAspectFlags VkTextureManager::GetAspectMaskForFormat(VkFormat format) {
+        switch (format) {
+        case VK_FORMAT_D16_UNORM:
+        case VK_FORMAT_X8_D24_UNORM_PACK32:
+        case VK_FORMAT_D32_SFLOAT:
+            return VK_IMAGE_ASPECT_DEPTH_BIT;
+        case VK_FORMAT_S8_UINT:
+            return VK_IMAGE_ASPECT_STENCIL_BIT;
+        case VK_FORMAT_D16_UNORM_S8_UINT:
+        case VK_FORMAT_D24_UNORM_S8_UINT:
+        case VK_FORMAT_D32_SFLOAT_S8_UINT:
+            return VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT;
+        default:
+            return VK_IMAGE_ASPECT_COLOR_BIT;
+        }
+    }
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.h

@@ -0,0 +1,122 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.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 "../VkIncludes.h"
+#include <Includes.h>
+#include <MG_State/GLState/TextureState/TextureObject.h>
+#include <vk_mem_alloc.h>
+
+namespace MobileGL::MG_State::GLState {
+class ITextureObject;
+}
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+class VkTextureManager {
+public:
+    struct InitInfo {
+        VkDevice device = VK_NULL_HANDLE;
+        VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
+        VmaAllocator allocator = nullptr;
+        VkCommandPool commandPool = VK_NULL_HANDLE;
+        VkQueue graphicsQueue = VK_NULL_HANDLE;
+    };
+
+    struct TextureResource {
+        VkImage image = VK_NULL_HANDLE;
+        VmaAllocation allocation = nullptr;
+        VkImageView view = VK_NULL_HANDLE;
+        VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED;
+        VkExtent2D extent = {0, 0};
+        Uint32 mipLevels = 1;
+        VkFormat format = VK_FORMAT_UNDEFINED;
+        VkImageAspectFlags aspect = VK_IMAGE_ASPECT_NONE;
+
+        TextureResource() = default;
+        TextureResource(const TextureResource&) = delete;
+        TextureResource(TextureResource&& that) noexcept {
+            std::swap(this->image, that.image);
+            std::swap(this->allocation, that.allocation);
+            std::swap(this->view, that.view);
+            std::swap(this->layout, that.layout);
+            std::swap(this->extent, that.extent);
+            std::swap(this->mipLevels, that.mipLevels);
+            std::swap(this->format, that.format);
+            std::swap(this->aspect, that.aspect);
+        }
+
+        void Reset() {
+            if (view != VK_NULL_HANDLE) {
+                vkDestroyImageView(s_device, view, nullptr);
+            }
+            if (image != VK_NULL_HANDLE && allocation != nullptr) {
+                vmaDestroyImage(s_allocator, image, allocation);
+            }
+            view = VK_NULL_HANDLE;
+            image = VK_NULL_HANDLE;
+            allocation = nullptr;
+            layout = VK_IMAGE_LAYOUT_UNDEFINED;
+            extent = {0, 0};
+            mipLevels = 1;
+            format = VK_FORMAT_UNDEFINED;
+            aspect = VK_IMAGE_ASPECT_NONE;
+        }
+
+        ~TextureResource() {
+            Reset();
+        }
+
+        static inline VkDevice s_device = VK_NULL_HANDLE;
+        static inline VmaAllocator s_allocator = VK_NULL_HANDLE;
+    };
+
+    Bool Initialize(const InitInfo& initInfo);
+    void Shutdown();
+
+    TextureResource* SyncTextureAndGetDescriptor(
+        MG_State::GLState::ITextureObject& texture);
+    void UpdateTrackedImageLayout(MG_State::GLState::ITextureObject* texture, VkImageLayout newLayout);
+    Bool TransitionTextureForSampling(VkCommandBuffer commandBuffer, MG_State::GLState::ITextureObject& texture);
+
+    static Bool TransitionImageLayout(VkCommandBuffer commandBuffer, VkImage image, VkImageLayout& trackedLayout,
+                               VkImageLayout newLayout, VkPipelineStageFlags srcStageMask,
+                               VkPipelineStageFlags dstStageMask, VkAccessFlags srcAccessMask,
+                               VkAccessFlags dstAccessMask, VkImageAspectFlags aspectMask);
+
+    SizeT CollectGarbage();
+private:
+
+    Bool SyncTexture(MG_State::GLState::ITextureObject &texture,
+                     TextureResource &outResource);
+    Bool SyncTextureResource(const MG_State::GLState::ITextureObject &texture,
+                             TextureUploadTarget uploadTarget,
+                             const IntVec3 &texelSize, SizeT byteSize, Uint32 mipLevels,
+                             TextureResource &resource);
+    Bool UploadDirtyMipLevels(MG_State::GLState::TextureObjectMipmap &mipmapTexture,
+                      TextureUploadTarget uploadTarget,
+                      TextureResource &outResource);
+    static Bool CheckMipmapCompleteness(const MG_State::GLState::ITextureObject& texture,
+                                        TextureUploadTarget& outTarget,
+                                        IntVec3& outTexelSize,
+                                        SizeT& outByteSize,
+                                        Uint32& outMipLevelCount);
+    static Uint32 GetUploadMipLevelCount(const MG_State::GLState::TextureObjectMipmap& texture, TextureUploadTarget target);
+    static VkImageAspectFlags GetAspectMaskForFormat(VkFormat format);
+
+    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;
+
+    Uint8 m_gcCounter = 0;
+    UnorderedMap<MG_State::GLState::ITextureObject*, WeakPtr<MG_State::GLState::ITextureObject>> m_aliveObjects;
+    UnorderedMap<MG_State::GLState::ITextureObject*, TextureResource> m_textureResources;
+};
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureSamplerManager.cpp

@@ -1,644 +0,0 @@
-// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureSamplerManager.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 "VkTextureSamplerManager.h"
-
-#include "MG_State/GLState/Core.h"
-
-namespace MobileGL::MG_Backend::DirectVulkan {
-    namespace {
-        constexpr Uint64 BuildSamplerKey(Uint externalIndex, Uint16 version) {
-            return (static_cast<Uint64>(externalIndex) << 16) | static_cast<Uint64>(version);
-        }
-    } // namespace
-
-    Bool VkTextureSamplerManager::Initialize(const InitInfo& initInfo) {
-        Shutdown();
-
-        m_device = initInfo.device;
-        m_physicalDevice = initInfo.physicalDevice;
-        m_commandPool = initInfo.commandPool;
-        m_graphicsQueue = initInfo.graphicsQueue;
-
-        if (m_device == VK_NULL_HANDLE || m_physicalDevice == VK_NULL_HANDLE || m_commandPool == VK_NULL_HANDLE ||
-            m_graphicsQueue == VK_NULL_HANDLE) {
-            MGLOG_E("VkTextureSamplerManager::Initialize failed: invalid Vulkan handles");
-            Shutdown();
-            return false;
-        }
-
-        if (!UploadFallbackTexture()) {
-            MGLOG_E("VkTextureSamplerManager::Initialize failed: fallback texture creation failed");
-            Shutdown();
-            return false;
-        }
-        return true;
-    }
-
-    void VkTextureSamplerManager::Shutdown() {
-        for (auto& [_, resource] : m_textureResources) {
-            DestroyTextureResource(resource);
-        }
-        m_textureResources.clear();
-
-        for (auto& [_, sampler] : m_samplers) {
-            if (m_device != VK_NULL_HANDLE && sampler.handle != VK_NULL_HANDLE) {
-                vkDestroySampler(m_device, sampler.handle, nullptr);
-            }
-            sampler.handle = VK_NULL_HANDLE;
-        }
-        m_samplers.clear();
-
-        if (m_device != VK_NULL_HANDLE && m_fallbackSampler != VK_NULL_HANDLE) {
-            vkDestroySampler(m_device, m_fallbackSampler, nullptr);
-        }
-        if (m_device != VK_NULL_HANDLE && m_fallbackImageView != VK_NULL_HANDLE) {
-            vkDestroyImageView(m_device, m_fallbackImageView, nullptr);
-        }
-        if (m_device != VK_NULL_HANDLE && m_fallbackImage != VK_NULL_HANDLE) {
-            vkDestroyImage(m_device, m_fallbackImage, nullptr);
-        }
-        if (m_device != VK_NULL_HANDLE && m_fallbackImageMemory != VK_NULL_HANDLE) {
-            vkFreeMemory(m_device, m_fallbackImageMemory, nullptr);
-        }
-        m_fallbackSampler = VK_NULL_HANDLE;
-        m_fallbackImageView = VK_NULL_HANDLE;
-        m_fallbackImage = VK_NULL_HANDLE;
-        m_fallbackImageMemory = VK_NULL_HANDLE;
-
-        m_device = VK_NULL_HANDLE;
-        m_physicalDevice = VK_NULL_HANDLE;
-        m_commandPool = VK_NULL_HANDLE;
-        m_graphicsQueue = VK_NULL_HANDLE;
-    }
-
-    Bool VkTextureSamplerManager::GetFallbackDescriptor(VkDescriptorImageInfo& outImageInfo) const {
-        if (m_fallbackSampler == VK_NULL_HANDLE || m_fallbackImageView == VK_NULL_HANDLE) {
-            return false;
-        }
-        outImageInfo.sampler = m_fallbackSampler;
-        outImageInfo.imageView = m_fallbackImageView;
-        outImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-        return true;
-    }
-
-    Bool VkTextureSamplerManager::SyncTextureAndGetDescriptor(const MG_State::GLState::ITextureObject& texture,
-                                                              const MG_State::GLState::SamplerObject* samplerOverride,
-                                                              VkDescriptorImageInfo& outImageInfo) {
-        if (m_device == VK_NULL_HANDLE) {
-            return GetFallbackDescriptor(outImageInfo);
-        }
-
-        auto it = m_textureResources.find(texture.GetExternalIndex());
-        if (it == m_textureResources.end()) {
-            TextureResource initial{};
-            initial.textureExternalIndex = texture.GetExternalIndex();
-            auto [insertIt, _] = m_textureResources.emplace(texture.GetExternalIndex(), initial);
-            it = insertIt;
-        }
-
-        if (!EnsureTextureSynced(it->second, texture)) {
-            return GetFallbackDescriptor(outImageInfo);
-        }
-
-        const MG_State::GLState::SamplerObject* samplerToUse = samplerOverride;
-        if (!samplerToUse) {
-            auto textureSampler = texture.GetSamplerObject();
-            if (textureSampler) {
-                samplerToUse = textureSampler.get();
-            }
-        }
-
-        VkSampler sampler = m_fallbackSampler;
-        if (samplerToUse) {
-            sampler = GetOrCreateSampler(*samplerToUse);
-        }
-        if (sampler == VK_NULL_HANDLE) {
-            sampler = m_fallbackSampler;
-        }
-
-        if (it->second.view == VK_NULL_HANDLE || sampler == VK_NULL_HANDLE) {
-            return GetFallbackDescriptor(outImageInfo);
-        }
-
-        outImageInfo.sampler = sampler;
-        outImageInfo.imageView = it->second.view;
-        outImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-        return true;
-    }
-
-    Bool VkTextureSamplerManager::EnsureTextureSynced(TextureResource& resource,
-                                                      const MG_State::GLState::ITextureObject& texture) {
-        TextureUploadTarget level0Target = TextureUploadTarget::Unknown;
-        IntVec3 texelSize{0, 0, 0};
-        SizeT byteSize = 0;
-        if (!ResolveLevel0(texture, level0Target, texelSize, byteSize)) {
-            return false;
-        }
-
-        if (!EnsureTextureResource(resource, texture, level0Target, texelSize, byteSize)) {
-            return false;
-        }
-
-        const auto* mipTexture = dynamic_cast<const MG_State::GLState::TextureObjectMipmap*>(&texture);
-        if (!mipTexture) {
-            return false;
-        }
-
-        if (!mipTexture->IsStorageDirty(level0Target, 0)) {
-            return true;
-        }
-
-        if (!UploadLevel0(resource, *mipTexture, level0Target, byteSize)) {
-            return false;
-        }
-
-        auto& mutableTexture = const_cast<MG_State::GLState::TextureObjectMipmap&>(*mipTexture);
-        mutableTexture.MarkStorageDirty(level0Target, 0, false);
-        return true;
-    }
-
-    Bool VkTextureSamplerManager::EnsureTextureResource(TextureResource& resource,
-                                                        const MG_State::GLState::ITextureObject& texture,
-                                                        TextureUploadTarget level0Target, const IntVec3& texelSize,
-                                                        SizeT byteSize) {
-        const VkFormat format = ResolveTextureFormat(texture.GetFormat());
-        if (format == VK_FORMAT_UNDEFINED) {
-            return false;
-        }
-        if (texelSize.x() <= 0 || texelSize.y() <= 0 || byteSize == 0) {
-            return false;
-        }
-        if (level0Target != TextureUploadTarget::Texture2D) {
-            return false;
-        }
-
-        const Bool compatible = resource.image != VK_NULL_HANDLE && resource.format == format &&
-                                resource.extent.width == static_cast<Uint32>(texelSize.x()) &&
-                                resource.extent.height == static_cast<Uint32>(texelSize.y());
-        if (compatible) {
-            return true;
-        }
-
-        DestroyTextureResource(resource);
-
-        VkImageCreateInfo imageInfo{};
-        imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
-        imageInfo.imageType = VK_IMAGE_TYPE_2D;
-        imageInfo.extent.width = static_cast<Uint32>(texelSize.x());
-        imageInfo.extent.height = static_cast<Uint32>(texelSize.y());
-        imageInfo.extent.depth = 1;
-        imageInfo.mipLevels = 1;
-        imageInfo.arrayLayers = 1;
-        imageInfo.format = format;
-        imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
-        imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        imageInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
-        imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
-        imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-        VK_VERIFY(vkCreateImage(m_device, &imageInfo, nullptr, &resource.image), "vkCreateImage(texture)");
-
-        VkMemoryRequirements requirements{};
-        vkGetImageMemoryRequirements(m_device, resource.image, &requirements);
-
-        VkMemoryAllocateInfo allocInfo{};
-        allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-        allocInfo.allocationSize = requirements.size;
-        allocInfo.memoryTypeIndex = FindMemoryType(requirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
-        VK_VERIFY(vkAllocateMemory(m_device, &allocInfo, nullptr, &resource.memory), "vkAllocateMemory(texture)");
-        VK_VERIFY(vkBindImageMemory(m_device, resource.image, resource.memory, 0), "vkBindImageMemory(texture)");
-
-        VkImageViewCreateInfo viewInfo{};
-        viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-        viewInfo.image = resource.image;
-        viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-        viewInfo.format = format;
-        viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-        viewInfo.subresourceRange.baseMipLevel = 0;
-        viewInfo.subresourceRange.levelCount = 1;
-        viewInfo.subresourceRange.baseArrayLayer = 0;
-        viewInfo.subresourceRange.layerCount = 1;
-        VK_VERIFY(vkCreateImageView(m_device, &viewInfo, nullptr, &resource.view), "vkCreateImageView(texture)");
-
-        resource.layout = VK_IMAGE_LAYOUT_UNDEFINED;
-        resource.extent = {static_cast<Uint32>(texelSize.x()), static_cast<Uint32>(texelSize.y())};
-        resource.format = format;
-        resource.textureExternalIndex = texture.GetExternalIndex();
-        return true;
-    }
-
-    Bool VkTextureSamplerManager::UploadLevel0(TextureResource& resource,
-                                               const MG_State::GLState::TextureObjectMipmap& mipmapTexture,
-                                               TextureUploadTarget level0Target, SizeT byteSize) {
-        auto& mutableTexture = const_cast<MG_State::GLState::TextureObjectMipmap&>(mipmapTexture);
-        const void* source = mutableTexture.MapMipmapData(level0Target, 0);
-        if (source == nullptr || byteSize == 0) {
-            return false;
-        }
-
-        VkBuffer stagingBuffer = VK_NULL_HANDLE;
-        VkDeviceMemory stagingMemory = VK_NULL_HANDLE;
-
-        VkBufferCreateInfo bufferInfo{};
-        bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
-        bufferInfo.size = byteSize;
-        bufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
-        bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-        VK_VERIFY(vkCreateBuffer(m_device, &bufferInfo, nullptr, &stagingBuffer), "vkCreateBuffer(staging texture)");
-
-        VkMemoryRequirements requirements{};
-        vkGetBufferMemoryRequirements(m_device, stagingBuffer, &requirements);
-
-        VkMemoryAllocateInfo allocInfo{};
-        allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-        allocInfo.allocationSize = requirements.size;
-        allocInfo.memoryTypeIndex =
-            FindMemoryType(requirements.memoryTypeBits,
-                           VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
-        VK_VERIFY(vkAllocateMemory(m_device, &allocInfo, nullptr, &stagingMemory), "vkAllocateMemory(staging texture)");
-        VK_VERIFY(vkBindBufferMemory(m_device, stagingBuffer, stagingMemory, 0), "vkBindBufferMemory(staging texture)");
-
-        void* mapped = nullptr;
-        VK_VERIFY(vkMapMemory(m_device, stagingMemory, 0, byteSize, 0, &mapped), "vkMapMemory(staging texture)");
-        std::memcpy(mapped, source, byteSize);
-        vkUnmapMemory(m_device, stagingMemory);
-
-        const Bool ok = ExecuteImmediate([&](VkCommandBuffer commandBuffer) {
-            VkImageMemoryBarrier toTransferDst{};
-            toTransferDst.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
-            toTransferDst.srcAccessMask = 0;
-            toTransferDst.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
-            toTransferDst.oldLayout = resource.layout;
-            toTransferDst.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
-            toTransferDst.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toTransferDst.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toTransferDst.image = resource.image;
-            toTransferDst.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-            toTransferDst.subresourceRange.baseMipLevel = 0;
-            toTransferDst.subresourceRange.levelCount = 1;
-            toTransferDst.subresourceRange.baseArrayLayer = 0;
-            toTransferDst.subresourceRange.layerCount = 1;
-            vkCmdPipelineBarrier(commandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0,
-                                 nullptr, 0, nullptr, 1, &toTransferDst);
-
-            VkBufferImageCopy copy{};
-            copy.bufferOffset = 0;
-            copy.bufferRowLength = 0;
-            copy.bufferImageHeight = 0;
-            copy.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-            copy.imageSubresource.mipLevel = 0;
-            copy.imageSubresource.baseArrayLayer = 0;
-            copy.imageSubresource.layerCount = 1;
-            copy.imageOffset = {0, 0, 0};
-            copy.imageExtent = {resource.extent.width, resource.extent.height, 1};
-            vkCmdCopyBufferToImage(commandBuffer, stagingBuffer, resource.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1,
-                                   &copy);
-
-            VkImageMemoryBarrier toSampled{};
-            toSampled.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
-            toSampled.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
-            toSampled.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
-            toSampled.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
-            toSampled.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-            toSampled.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toSampled.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toSampled.image = resource.image;
-            toSampled.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-            toSampled.subresourceRange.baseMipLevel = 0;
-            toSampled.subresourceRange.levelCount = 1;
-            toSampled.subresourceRange.baseArrayLayer = 0;
-            toSampled.subresourceRange.layerCount = 1;
-            vkCmdPipelineBarrier(commandBuffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0,
-                                 0, nullptr, 0, nullptr, 1, &toSampled);
-        });
-
-        vkDestroyBuffer(m_device, stagingBuffer, nullptr);
-        vkFreeMemory(m_device, stagingMemory, nullptr);
-
-        if (!ok) {
-            return false;
-        }
-        resource.layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-        return true;
-    }
-
-    Bool VkTextureSamplerManager::ExecuteImmediate(const std::function<void(VkCommandBuffer)>& recorder) const {
-        VkCommandBufferAllocateInfo allocInfo{};
-        allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
-        allocInfo.commandPool = m_commandPool;
-        allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
-        allocInfo.commandBufferCount = 1;
-
-        VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
-        VK_VERIFY(vkAllocateCommandBuffers(m_device, &allocInfo, &commandBuffer), "vkAllocateCommandBuffers(texture)");
-
-        VkCommandBufferBeginInfo beginInfo{};
-        beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
-        beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
-        VK_VERIFY(vkBeginCommandBuffer(commandBuffer, &beginInfo), "vkBeginCommandBuffer(texture)");
-
-        recorder(commandBuffer);
-
-        VK_VERIFY(vkEndCommandBuffer(commandBuffer), "vkEndCommandBuffer(texture)");
-
-        VkSubmitInfo submitInfo{};
-        submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
-        submitInfo.commandBufferCount = 1;
-        submitInfo.pCommandBuffers = &commandBuffer;
-        VK_VERIFY(vkQueueSubmit(m_graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE), "vkQueueSubmit(texture)");
-        VK_VERIFY(vkQueueWaitIdle(m_graphicsQueue), "vkQueueWaitIdle(texture)");
-
-        vkFreeCommandBuffers(m_device, m_commandPool, 1, &commandBuffer);
-        return true;
-    }
-
-    void VkTextureSamplerManager::DestroyTextureResource(TextureResource& resource) const {
-        if (m_device != VK_NULL_HANDLE && resource.view != VK_NULL_HANDLE) {
-            vkDestroyImageView(m_device, resource.view, nullptr);
-        }
-        if (m_device != VK_NULL_HANDLE && resource.image != VK_NULL_HANDLE) {
-            vkDestroyImage(m_device, resource.image, nullptr);
-        }
-        if (m_device != VK_NULL_HANDLE && resource.memory != VK_NULL_HANDLE) {
-            vkFreeMemory(m_device, resource.memory, nullptr);
-        }
-        resource.view = VK_NULL_HANDLE;
-        resource.image = VK_NULL_HANDLE;
-        resource.memory = VK_NULL_HANDLE;
-        resource.layout = VK_IMAGE_LAYOUT_UNDEFINED;
-        resource.extent = {0, 0};
-        resource.format = VK_FORMAT_UNDEFINED;
-    }
-
-    Bool VkTextureSamplerManager::ResolveLevel0(const MG_State::GLState::ITextureObject& texture,
-                                                TextureUploadTarget& outTarget, IntVec3& outTexelSize,
-                                                SizeT& outByteSize) {
-        const auto* mipTexture = dynamic_cast<const MG_State::GLState::TextureObjectMipmap*>(&texture);
-        if (!mipTexture) {
-            return false;
-        }
-        const auto& targets = texture.GetUploadTargets();
-        if (targets.empty()) {
-            return false;
-        }
-        outTarget = targets.front();
-        outTexelSize = mipTexture->GetMipmapTexelSize(outTarget, 0);
-        outByteSize = mipTexture->GetMipmapByteSize(outTarget, 0);
-        return outTexelSize.x() > 0 && outTexelSize.y() > 0 && outByteSize > 0;
-    }
-
-    VkFormat VkTextureSamplerManager::ResolveTextureFormat(TextureInternalFormat format) {
-        switch (format) {
-        case TextureInternalFormat::RGBA:
-        case TextureInternalFormat::RGBA8:
-            return VK_FORMAT_R8G8B8A8_UNORM;
-        case TextureInternalFormat::SRGB8Alpha8:
-            return VK_FORMAT_R8G8B8A8_SRGB;
-        default:
-            return VK_FORMAT_UNDEFINED;
-        }
-    }
-
-    Uint32 VkTextureSamplerManager::FindMemoryType(Uint32 typeFilter, VkMemoryPropertyFlags properties) const {
-        VkPhysicalDeviceMemoryProperties memProperties{};
-        vkGetPhysicalDeviceMemoryProperties(m_physicalDevice, &memProperties);
-        for (Uint32 i = 0; i < memProperties.memoryTypeCount; ++i) {
-            if ((typeFilter & (1u << i)) != 0 &&
-                (memProperties.memoryTypes[i].propertyFlags & properties) == properties) {
-                return i;
-            }
-        }
-        MOBILEGL_ASSERT(false, "VkTextureSamplerManager::FindMemoryType failed");
-        return 0;
-    }
-
-    VkSampler VkTextureSamplerManager::GetOrCreateSampler(const MG_State::GLState::SamplerObject& sampler) {
-        const Uint64 key = BuildSamplerKey(sampler.GetExternalIndex(), sampler.GetVersion());
-        auto it = m_samplers.find(key);
-        if (it != m_samplers.end()) {
-            return it->second.handle;
-        }
-
-        VkSamplerCreateInfo samplerInfo{};
-        samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
-        samplerInfo.magFilter = ToVkFilter(sampler.GetMagFilter());
-        samplerInfo.minFilter = ToVkFilter(sampler.GetMinFilter());
-        samplerInfo.mipmapMode = ToVkMipmapMode(sampler.GetMipmapMode());
-        samplerInfo.addressModeU = ToVkAddressMode(sampler.GetWrapS());
-        samplerInfo.addressModeV = ToVkAddressMode(sampler.GetWrapT());
-        samplerInfo.addressModeW = ToVkAddressMode(sampler.GetWrapR());
-        samplerInfo.mipLodBias = sampler.GetLodBias();
-        samplerInfo.anisotropyEnable = VK_FALSE;
-        samplerInfo.maxAnisotropy = 1.0f;
-        samplerInfo.compareEnable = sampler.GetCompareMode() == SamplerCompareMode::CompareToTexture ? VK_TRUE : VK_FALSE;
-        samplerInfo.compareOp = ToVkCompareOp(sampler.GetSamplerCompareFunc());
-        samplerInfo.minLod = sampler.GetMinLod();
-        samplerInfo.maxLod = sampler.GetMaxLod();
-        samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK;
-        samplerInfo.unnormalizedCoordinates = VK_FALSE;
-
-        VkSampler vkSampler = VK_NULL_HANDLE;
-        VK_VERIFY(vkCreateSampler(m_device, &samplerInfo, nullptr, &vkSampler), "vkCreateSampler(texture)");
-
-        SamplerCacheEntry entry{};
-        entry.handle = vkSampler;
-        entry.externalIndex = sampler.GetExternalIndex();
-        entry.version = sampler.GetVersion();
-        m_samplers[key] = entry;
-        return vkSampler;
-    }
-
-    VkFilter VkTextureSamplerManager::ToVkFilter(SamplerFilterMode mode) {
-        return mode == SamplerFilterMode::Nearest ? VK_FILTER_NEAREST : VK_FILTER_LINEAR;
-    }
-
-    VkSamplerMipmapMode VkTextureSamplerManager::ToVkMipmapMode(SamplerMipmapMode mode) {
-        switch (mode) {
-        case SamplerMipmapMode::Nearest:
-            return VK_SAMPLER_MIPMAP_MODE_NEAREST;
-        case SamplerMipmapMode::Linear:
-            return VK_SAMPLER_MIPMAP_MODE_LINEAR;
-        case SamplerMipmapMode::None:
-        default:
-            return VK_SAMPLER_MIPMAP_MODE_NEAREST;
-        }
-    }
-
-    VkSamplerAddressMode VkTextureSamplerManager::ToVkAddressMode(SamplerWrapMode mode) {
-        switch (mode) {
-        case SamplerWrapMode::ClampToEdge:
-            return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-        case SamplerWrapMode::MirroredRepeat:
-            return VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
-        case SamplerWrapMode::Repeat:
-            return VK_SAMPLER_ADDRESS_MODE_REPEAT;
-        case SamplerWrapMode::ClampToBorder:
-            return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER;
-        case SamplerWrapMode::MirrorClampToEdge:
-            return VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE;
-        default:
-            return VK_SAMPLER_ADDRESS_MODE_REPEAT;
-        }
-    }
-
-    VkCompareOp VkTextureSamplerManager::ToVkCompareOp(SamplerCompareFunc func) {
-        switch (func) {
-        case SamplerCompareFunc::Never:
-            return VK_COMPARE_OP_NEVER;
-        case SamplerCompareFunc::Less:
-            return VK_COMPARE_OP_LESS;
-        case SamplerCompareFunc::Equal:
-            return VK_COMPARE_OP_EQUAL;
-        case SamplerCompareFunc::LessEqual:
-            return VK_COMPARE_OP_LESS_OR_EQUAL;
-        case SamplerCompareFunc::Greater:
-            return VK_COMPARE_OP_GREATER;
-        case SamplerCompareFunc::NotEqual:
-            return VK_COMPARE_OP_NOT_EQUAL;
-        case SamplerCompareFunc::GreaterEqual:
-            return VK_COMPARE_OP_GREATER_OR_EQUAL;
-        case SamplerCompareFunc::Always:
-        default:
-            return VK_COMPARE_OP_ALWAYS;
-        }
-    }
-
-    Bool VkTextureSamplerManager::UploadFallbackTexture() {
-        const Uint32 rgba = 0xFFFFFFFFu;
-
-        VkImageCreateInfo imageInfo{};
-        imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
-        imageInfo.imageType = VK_IMAGE_TYPE_2D;
-        imageInfo.extent = {1, 1, 1};
-        imageInfo.mipLevels = 1;
-        imageInfo.arrayLayers = 1;
-        imageInfo.format = VK_FORMAT_R8G8B8A8_UNORM;
-        imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
-        imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        imageInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
-        imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
-        imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-        VK_VERIFY(vkCreateImage(m_device, &imageInfo, nullptr, &m_fallbackImage), "vkCreateImage(fallback)");
-
-        VkMemoryRequirements imageMemReq{};
-        vkGetImageMemoryRequirements(m_device, m_fallbackImage, &imageMemReq);
-
-        VkMemoryAllocateInfo imageAllocInfo{};
-        imageAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-        imageAllocInfo.allocationSize = imageMemReq.size;
-        imageAllocInfo.memoryTypeIndex = FindMemoryType(imageMemReq.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
-        VK_VERIFY(vkAllocateMemory(m_device, &imageAllocInfo, nullptr, &m_fallbackImageMemory),
-                  "vkAllocateMemory(fallback)");
-        VK_VERIFY(vkBindImageMemory(m_device, m_fallbackImage, m_fallbackImageMemory, 0), "vkBindImageMemory(fallback)");
-
-        VkBuffer stagingBuffer = VK_NULL_HANDLE;
-        VkDeviceMemory stagingMemory = VK_NULL_HANDLE;
-
-        VkBufferCreateInfo bufferInfo{};
-        bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
-        bufferInfo.size = sizeof(rgba);
-        bufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
-        bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
-        VK_VERIFY(vkCreateBuffer(m_device, &bufferInfo, nullptr, &stagingBuffer), "vkCreateBuffer(fallback)");
-
-        VkMemoryRequirements stagingMemReq{};
-        vkGetBufferMemoryRequirements(m_device, stagingBuffer, &stagingMemReq);
-
-        VkMemoryAllocateInfo stagingAllocInfo{};
-        stagingAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
-        stagingAllocInfo.allocationSize = stagingMemReq.size;
-        stagingAllocInfo.memoryTypeIndex =
-            FindMemoryType(stagingMemReq.memoryTypeBits,
-                           VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
-        VK_VERIFY(vkAllocateMemory(m_device, &stagingAllocInfo, nullptr, &stagingMemory), "vkAllocateMemory(fallback)");
-        VK_VERIFY(vkBindBufferMemory(m_device, stagingBuffer, stagingMemory, 0), "vkBindBufferMemory(fallback)");
-
-        void* mapped = nullptr;
-        VK_VERIFY(vkMapMemory(m_device, stagingMemory, 0, sizeof(rgba), 0, &mapped), "vkMapMemory(fallback)");
-        std::memcpy(mapped, &rgba, sizeof(rgba));
-        vkUnmapMemory(m_device, stagingMemory);
-
-        const Bool uploadOk = ExecuteImmediate([&](VkCommandBuffer commandBuffer) {
-            VkImageMemoryBarrier toTransferDst{};
-            toTransferDst.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
-            toTransferDst.srcAccessMask = 0;
-            toTransferDst.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
-            toTransferDst.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-            toTransferDst.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
-            toTransferDst.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toTransferDst.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toTransferDst.image = m_fallbackImage;
-            toTransferDst.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-            toTransferDst.subresourceRange.baseMipLevel = 0;
-            toTransferDst.subresourceRange.levelCount = 1;
-            toTransferDst.subresourceRange.baseArrayLayer = 0;
-            toTransferDst.subresourceRange.layerCount = 1;
-            vkCmdPipelineBarrier(commandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0,
-                                 nullptr, 0, nullptr, 1, &toTransferDst);
-
-            VkBufferImageCopy copy{};
-            copy.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-            copy.imageSubresource.mipLevel = 0;
-            copy.imageSubresource.baseArrayLayer = 0;
-            copy.imageSubresource.layerCount = 1;
-            copy.imageExtent = {1, 1, 1};
-            vkCmdCopyBufferToImage(commandBuffer, stagingBuffer, m_fallbackImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1,
-                                   &copy);
-
-            VkImageMemoryBarrier toSampled{};
-            toSampled.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
-            toSampled.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
-            toSampled.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
-            toSampled.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
-            toSampled.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-            toSampled.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toSampled.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-            toSampled.image = m_fallbackImage;
-            toSampled.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-            toSampled.subresourceRange.baseMipLevel = 0;
-            toSampled.subresourceRange.levelCount = 1;
-            toSampled.subresourceRange.baseArrayLayer = 0;
-            toSampled.subresourceRange.layerCount = 1;
-            vkCmdPipelineBarrier(commandBuffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0,
-                                 0, nullptr, 0, nullptr, 1, &toSampled);
-        });
-
-        vkDestroyBuffer(m_device, stagingBuffer, nullptr);
-        vkFreeMemory(m_device, stagingMemory, nullptr);
-        if (!uploadOk) {
-            return false;
-        }
-
-        VkImageViewCreateInfo viewInfo{};
-        viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-        viewInfo.image = m_fallbackImage;
-        viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-        viewInfo.format = VK_FORMAT_R8G8B8A8_UNORM;
-        viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-        viewInfo.subresourceRange.baseMipLevel = 0;
-        viewInfo.subresourceRange.levelCount = 1;
-        viewInfo.subresourceRange.baseArrayLayer = 0;
-        viewInfo.subresourceRange.layerCount = 1;
-        VK_VERIFY(vkCreateImageView(m_device, &viewInfo, nullptr, &m_fallbackImageView), "vkCreateImageView(fallback)");
-
-        VkSamplerCreateInfo samplerInfo{};
-        samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
-        samplerInfo.magFilter = VK_FILTER_NEAREST;
-        samplerInfo.minFilter = VK_FILTER_NEAREST;
-        samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
-        samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-        samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-        samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-        samplerInfo.compareEnable = VK_FALSE;
-        samplerInfo.minLod = 0.0f;
-        samplerInfo.maxLod = 0.0f;
-        samplerInfo.maxAnisotropy = 1.0f;
-        VK_VERIFY(vkCreateSampler(m_device, &samplerInfo, nullptr, &m_fallbackSampler), "vkCreateSampler(fallback)");
-        return true;
-    }
-} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureSamplerManager.h

@@ -1,88 +0,0 @@
-// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureSamplerManager.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 "../VkIncludes.h"
-#include <Includes.h>
-#include <MG_State/GLState/SamplerState/SamplerObject.h>
-#include <MG_State/GLState/TextureState/TextureObject.h>
-
-namespace MobileGL::MG_State::GLState {
-class ITextureObject;
-class SamplerObject;
-}
-
-namespace MobileGL::MG_Backend::DirectVulkan {
-class VkTextureSamplerManager {
-public:
-    struct InitInfo {
-        VkDevice device = VK_NULL_HANDLE;
-        VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
-        VkCommandPool commandPool = VK_NULL_HANDLE;
-        VkQueue graphicsQueue = VK_NULL_HANDLE;
-    };
-
-    Bool Initialize(const InitInfo& initInfo);
-    void Shutdown();
-
-    Bool GetFallbackDescriptor(VkDescriptorImageInfo& outImageInfo) const;
-    Bool SyncTextureAndGetDescriptor(const MG_State::GLState::ITextureObject& texture,
-                                     const MG_State::GLState::SamplerObject* samplerOverride,
-                                     VkDescriptorImageInfo& outImageInfo);
-
-private:
-    struct TextureResource {
-        VkImage image = VK_NULL_HANDLE;
-        VkDeviceMemory memory = VK_NULL_HANDLE;
-        VkImageView view = VK_NULL_HANDLE;
-        VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED;
-        VkExtent2D extent = {0, 0};
-        VkFormat format = VK_FORMAT_UNDEFINED;
-        Uint textureExternalIndex = 0;
-    };
-
-    struct SamplerCacheEntry {
-        VkSampler handle = VK_NULL_HANDLE;
-        Uint externalIndex = 0;
-        Uint16 version = 0;
-    };
-
-    Bool EnsureTextureSynced(TextureResource& resource, const MG_State::GLState::ITextureObject& texture);
-    Bool EnsureTextureResource(TextureResource& resource, const MG_State::GLState::ITextureObject& texture,
-                               TextureUploadTarget level0Target, const IntVec3& texelSize, SizeT byteSize);
-    Bool UploadLevel0(TextureResource& resource, const MG_State::GLState::TextureObjectMipmap& mipmapTexture,
-                      TextureUploadTarget level0Target, SizeT byteSize);
-    Bool ExecuteImmediate(const std::function<void(VkCommandBuffer)>& recorder) const;
-    void DestroyTextureResource(TextureResource& resource) const;
-    static Bool ResolveLevel0(const MG_State::GLState::ITextureObject& texture, TextureUploadTarget& outTarget,
-                              IntVec3& outTexelSize, SizeT& outByteSize);
-    static VkFormat ResolveTextureFormat(TextureInternalFormat format);
-    Uint32 FindMemoryType(Uint32 typeFilter, VkMemoryPropertyFlags properties) const;
-
-    VkSampler GetOrCreateSampler(const MG_State::GLState::SamplerObject& sampler);
-    static VkFilter ToVkFilter(SamplerFilterMode mode);
-    static VkSamplerMipmapMode ToVkMipmapMode(SamplerMipmapMode mode);
-    static VkSamplerAddressMode ToVkAddressMode(SamplerWrapMode mode);
-    static VkCompareOp ToVkCompareOp(SamplerCompareFunc func);
-    Bool UploadFallbackTexture();
-
-    VkDevice m_device = VK_NULL_HANDLE;
-    VkPhysicalDevice m_physicalDevice = VK_NULL_HANDLE;
-    VkCommandPool m_commandPool = VK_NULL_HANDLE;
-    VkQueue m_graphicsQueue = VK_NULL_HANDLE;
-
-    UnorderedMap<Uint, TextureResource> m_textureResources;
-    UnorderedMap<Uint64, SamplerCacheEntry> m_samplers;
-
-    VkImage m_fallbackImage = VK_NULL_HANDLE;
-    VkDeviceMemory m_fallbackImageMemory = VK_NULL_HANDLE;
-    VkImageView m_fallbackImageView = VK_NULL_HANDLE;
-    VkSampler m_fallbackSampler = VK_NULL_HANDLE;
-};
-} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h

@@ -15,9 +15,10 @@
 #include "UniformDescriptorBinder.h"
 #include "VertexInputStateFactory.h"
 #include "VkBufferObject.h"
-#include "VkFramebufferManager.h"
+#include "VkClearManager.h"
 #include "VkRenderPassManager.h"
-#include "VkTextureSamplerManager.h"
+#include "VkSamplerManager.h"
+#include "VkTextureManager.h"
 #include "MG_Util/Math/VectorTypes.h"
 #include <Includes.h>
 #include <vk_mem_alloc.h>
@@ -27,20 +28,28 @@
 namespace MobileGL::MG_State::GLState {
     class FramebufferObject;
     class ProgramObject;
+    class SamplerObject;
     class VertexArrayObject;
 } // namespace MobileGL::MG_State::GLState
 
 namespace MobileGL::MG_Backend::DirectVulkan {
-    struct DrawArrayPayload {
+    enum class DrawSetupAspect: Uint8 {
+        FramebufferObject = 1 << 0,
+        VertexArrayObject = 1 << 1,
+        UniformBuffer     = 1 << 2,
+        VertexBuffer      = 1 << 3,
+        IndexBuffer       = 1 << 4,
+        Viewport          = 1 << 5,
+        Scissor           = 1 << 6,
+    };
+
+    struct DrawArrayCmd {
         GLenum mode = GL_TRIANGLES;
         GLint first = 0;
         GLsizei count = 0;
-        const MG_State::GLState::ProgramObject* program = nullptr;
-        const MG_State::GLState::VertexArrayObject* vertexArray = nullptr;
     };
 
-    struct DrawElementPayload {
-        DrawArrayPayload drawArray;
+    struct DrawElementCmd: public DrawArrayCmd {
         GLenum indexType = GL_UNSIGNED_SHORT;
         SizeT indexByteOffset = 0;
         GLint baseVertex = 0;
@@ -69,17 +78,17 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void Initialize();
         void Shutdown();
 
-        void RequestClear(GLbitfield mask, const FloatVec4& color, Float depth, Uint32 stencil,
-                          Uint drawFboExternalIndex, Bool isDefaultFramebufferTarget);
-        Bool ConsumePendingColorClear(VkClearColorValue& outClearColor);
-        void EnsureFrameRecordingStarted();
-        void DrawArrays(const DrawArrayPayload& payload);
-        void DrawElements(const DrawElementPayload& payload);
-        void MultiDrawElements(const Vector<DrawElementPayload>& payloads);
-        Bool BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
-                             GLint dstY1, GLbitfield mask, GLenum filter, Uint readFboExternalIndex,
-                             Uint drawFboExternalIndex, Bool readIsDefaultFramebuffer, Bool drawIsDefaultFramebuffer);
-        void Render();
+        void SetupDraw(FrameContext::FrameData& frame, GLenum mode, Flags<DrawSetupAspect> aspects);
+        void ClearAttachmentsOnActiveRenderPass(VkCommandBuffer commandBuffer,
+                                                const RenderPassEntry& compatibleRenderPassEntry);
+
+        void Clear(GLbitfield mask);
+        void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                             GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                             GLbitfield mask, GLenum filter);
+        void DrawArrays(const DrawArrayCmd& payload);
+        void DrawElements(const DrawElementCmd& payload);
+        void MultiDrawElements(const Vector<DrawElementCmd>& payloads);
         void Present();
 
         const PhysicalDevice& GetPhysicalDevice() const;
@@ -88,13 +97,21 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void RecreateSwapchain();
 
     private:
-        struct PendingClearState {
-            GLbitfield mask = 0;
-            VkClearColorValue color = {{0.0f, 0.0f, 0.0f, 1.0f}};
-            Float depth = 1.0f;
-            Uint32 stencil = 0;
-            Uint drawFboExternalIndex = 0;
-            Bool targetsDefaultFramebuffer = true;
+        struct BlitUniformData {
+            float srcRect[4] = {0.f, 0.f, 1.f, 1.f};
+            float dstRect[4] = {0.f, 0.f, 1.f, 1.f};
+            Int surfaceTransform = 0;
+            Int padding[3] = {0, 0, 0};
+        };
+
+        struct BlitResources {
+            SharedPtr<MG_State::GLState::ProgramObject> program;
+            SharedPtr<MG_State::GLState::SamplerObject> nearestSampler;
+            SharedPtr<MG_State::GLState::SamplerObject> linearSampler;
+            Int srcRectLocation = -1;
+            Int dstRectLocation = -1;
+            Int surfaceTransformLocation = -1;
+            Uint32 samplerBinding = 0;
         };
 
         NativeWindowType m_window = 0;
@@ -106,15 +123,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkInstance m_instance = VK_NULL_HANDLE;
         VkDebugUtilsMessengerEXT m_debugMessenger = VK_NULL_HANDLE;
         PhysicalDevice m_physicalDevice;
-        // VkPhysicalDevice m_physicalDevice = VK_NULL_HANDLE;
         VkDevice m_device = VK_NULL_HANDLE;
         VmaAllocator m_allocator = nullptr;
         VkSurfaceKHR m_surface = VK_NULL_HANDLE;
         SwapchainObject m_swapchainObject;
 
-        // Vector<VkQueueFamilyProperties> m_queueFamilies;
-        // QueueFamilyIndices m_queueFamilyIndices;
-
         VkQueue m_graphicsQueue = VK_NULL_HANDLE;
         VkQueue m_presentQueue = VK_NULL_HANDLE;
         Bool m_drawIndirectCountExtensionEnabled = false;
@@ -126,13 +139,6 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         VkCommandPool m_commandPool = VK_NULL_HANDLE;
 
-        VkFormat m_depthStencilFormat = VK_FORMAT_UNDEFINED;
-        Vector<VkImage> m_depthStencilImages;
-        Vector<VkDeviceMemory> m_depthStencilImageMemories;
-        Vector<VkImageView> m_depthStencilImageViews;
-        Vector<VkImageLayout> m_depthStencilImageLayouts;
-
-        VkPipelineLayout m_pipelineLayout = VK_NULL_HANDLE;
         Vector<VkBufferObject> m_frameVertexUploadBuffers;
         Vector<VkDeviceSize> m_frameVertexUploadHeads;
         Vector<VkBufferObject> m_frameIndexUploadBuffers;
@@ -141,21 +147,16 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         Uint m_imageIndexAcquired = 0;
         FrameContext m_frameContext;
-        UnorderedMap<Uint64, PendingClearState> m_pendingClears;
-        Bool m_isMainRenderPassActive = false;
-        VkRenderPass m_activeRenderPass = VK_NULL_HANDLE;
-        VkExtent2D m_activeRenderExtent = {0, 0};
-        VkFormat m_activeDepthStencilFormat = VK_FORMAT_UNDEFINED;
-        Bool m_activeRenderTargetIsDefault = true;
-        Uint m_activeDrawFboExternalIndex = 0;
 
         UniquePtr<PipelineFactory> m_pipelineFactory;
         UniquePtr<ProgramFactory> m_programFactory;
         UniquePtr<UniformDescriptorBinder> m_uniformDescriptorBinder;
         UniquePtr<VertexInputStateFactory> m_vertexInputStateFactory;
-        UniquePtr<VkFramebufferManager> m_framebufferManager;
+        UniquePtr<VkClearManager> m_clearManager;
         UniquePtr<VkRenderPassManager> m_renderPassManager;
-        UniquePtr<VkTextureSamplerManager> m_textureSamplerManager;
+        UniquePtr<VkTextureManager> m_textureManager;
+        UniquePtr<VkSamplerManager> m_samplerManager;
+        BlitResources m_blitResources;
 
         void CreateInstance();
         VkResult SetupDebugMessenger();
@@ -169,30 +170,33 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void CreateSwapchain();
         void CreateCommandPool();
         void CreateFrameContexts();
-        void CreateDepthStencilResources();
-        void DestroyDepthStencilResources();
-        VkRenderPass GetDefaultLoadRenderPass() const;
-        Bool GetDefaultRenderTargetForCurrentImage(VkRenderPass& outRenderPass, VkFramebuffer& outFramebuffer,
-                                                   VkExtent2D& outExtent, VkFormat& outDepthStencilFormat) const;
-        Bool EnsureOffscreenRenderTarget(Uint glFboExternalIndex, const MG_State::GLState::FramebufferObject& glFbo,
-                                         VkRenderPass& outRenderPass, VkFramebuffer& outFramebuffer,
-                                         VkExtent2D& outExtent, VkFormat& outDepthStencilFormat);
-        void PrepareDemoPipeline();
-        VkPipeline GetOrCreatePipeline(const MG_State::GLState::ProgramObject& program, VkPipelineLayout pipelineLayout,
-                                       Uint64 vertexInputHash,
-                                       const VkPipelineVertexInputStateCreateInfo& vertexInputState);
-        void TransitionSwapchainImageToColorAttachment(VkCommandBuffer commandBuffer, Uint32 imageIndex);
-        void TransitionDepthStencilImageToAttachment(VkCommandBuffer commandBuffer, Uint32 imageIndex);
-        void EndFrameRecordingIfNeeded();
+
+        VkPipeline GetOrCreatePipeline(
+            GLenum mode,
+            const MG_State::GLState::ProgramObject& program,
+            const MG_State::GLState::VertexArrayObject& vao,
+            const RenderPassEntry& renderPassEntry);
+
         void DeferDestroyBuffer(VkBufferObject& buffer);
         void CollectDeferredBufferReleases(Uint32 frameIndex);
         Bool EnsureFrameUploadBufferCapacity(Uint32 frameIndex, Bool isIndexBuffer, VkDeviceSize requiredEndOffset,
                                              VkDeviceSize minCapacity, VkBufferUsageFlags usage);
-        Bool UploadAndBindVertexStreams(const VertexInputStateFactory::BackendVertexInputState& vertexInputState,
-                                        const DrawArrayPayload& payload, VkCommandBuffer commandBuffer);
+        Bool UploadAndBindVertexStreams(VkCommandBuffer commandBuffer, const MG_State::GLState::VertexArrayObject& vao);
+        Bool InitializeBlitResources();
+        void ShutdownBlitResources();
+        Bool TryBlitToDefaultFramebufferWithShader(FrameContext::FrameData& frame,
+                                                   MG_State::GLState::FramebufferObject& readFbo,
+                                                   MG_State::GLState::FramebufferObject& drawFbo,
+                                                   GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                                                   GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                                                   GLenum filter);
+        Bool MaterializePendingClearForTexture(VkCommandBuffer commandBuffer,
+                                               MG_State::GLState::ITextureObject& texture);
+        VkPipeline GetOrCreateBlitPipeline(const RenderPassEntry& renderPassEntry);
 
         void ShutdownSwapchain();
 
+        // Static functions
         static Int GetPresentQueueFamilyIndex(const PhysicalDevice& physicalDevice, VkSurfaceKHR surface,
                                               const Vector<VkQueueFamilyProperties>& queueFamilies,
                                               Int preferredFamilyIndex = -1);
@@ -212,10 +216,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         static Bool GetMoreCapablePhysicalDevice(VkPhysicalDevice newVkDevice, VkSurfaceKHR surface,
                                                  const PhysicalDevice& compareWithDevice,
                                                  PhysicalDevice& outBetterDevice);
-        Uint32 FindMemoryType(Uint32 typeFilter, VkMemoryPropertyFlags properties) const;
         static Uint64 BuildPendingClearKey(Uint drawFboExternalIndex, Bool targetsDefaultFramebuffer);
-        static Bool HasStencilComponent(VkFormat format);
-        static VkFormat FindSupportedDepthStencilFormat(VkPhysicalDevice physicalDevice);
         static constexpr VkDynamicState s_dynamicStates[] = {VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR};
         static constexpr const char* s_validationLayerNames[] = {"VK_LAYER_KHRONOS_validation"};
         static constexpr const char* s_deviceExtensionNames[] = {VK_KHR_SWAPCHAIN_EXTENSION_NAME};

MobileGL/MG_Impl/EGLImpl/EGLImpl.cpp

@@ -20,7 +20,7 @@ namespace MobileGL::MG_Impl::EGLImpl {
             if (!MG_State::pEGLContext) {
                 MGLOG_E("pEGLContext is null. MG_State may not be initialized.");
             }
-            return MG_State::pEGLContext;
+            return MG_State::pEGLContext.get();
         }
 
         MG_Backend::BackendObject* GetBackendObject(EGLStateContext* state) {

MobileGL/MG_Impl/GLImpl/Buffer/GL_Buffer.h

@@ -9,24 +9,22 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-        void GetBufferParameteriv(GLenum target, GLenum pname, GLint* params);
-        GLboolean IsBuffer(GLuint buffer);
-        void DeleteBuffers(GLsizei n, const GLuint* buffers);
-        void FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length);
-        GLboolean UnmapBuffer(GLenum target);
-        void* MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
-        void* MapBuffer(GLenum target, GLenum access);
-        void CopyBufferSubData(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset,
-                               GLsizeiptr size);
-        void BufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const 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);
-        void BindBufferBase(GLenum target, GLuint index, GLuint buffer);
-        void BindBufferRange(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
+namespace MobileGL::MG_Impl::GLImpl {
+    /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
+    void GetBufferParameteriv(GLenum target, GLenum pname, GLint* params);
+    GLboolean IsBuffer(GLuint buffer);
+    void DeleteBuffers(GLsizei n, const GLuint* buffers);
+    void FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length);
+    GLboolean UnmapBuffer(GLenum target);
+    void* MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
+    void* MapBuffer(GLenum target, GLenum access);
+    void CopyBufferSubData(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset,
+                           GLsizeiptr size);
+    void BufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const 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);
+    void BindBufferBase(GLenum target, GLuint index, GLuint buffer);
+    void BindBufferRange(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
 
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Buffer/Validators.cpp

@@ -13,105 +13,100 @@
 #include <MG_Util/Converters/MGToGL/BufferEnumConverter.h>
 #include <MG_Util/Converters/MGToStr/BufferEnumConverter.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace BufferImpl {
-        Bool ValidateBufferTarget(BufferTarget target) {
-            if (target == BufferTarget::Unknown) {
-                using namespace MG_Util;
-                String bufferTargetStr = ConvertBufferTargetToString(target);
-                String glTargetStr = ConvertGLEnumToString(ConvertBufferTargetToGLEnum(target));
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl/BufferImpl", "ValidateBufferTarget",
-                        std::format("Target {} ({}) is not valid.", bufferTargetStr, glTargetStr)));
-                return false;
-            }
-
-            if (target == BufferTarget::Index && MG_State::pGLContext->GetBoundVertexArray() == nullptr) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl",
-                                                                               "ValidateBufferTarget",
-                                                                               "No vertex array object is bound."));
-                return false;
-            }
-
-            return true;
-        }
-
-        Bool ValidateBufferBindingPointTarget(BufferTarget target) {
-            if (target != BufferTarget::Uniform && target != BufferTarget::AtomicCounter &&
-                target != BufferTarget::TransformFeedback && target != BufferTarget::ShaderStorage) {
-                using namespace MG_Util;
-                String bufferTargetStr = ConvertBufferTargetToString(target);
-                String glTargetStr = ConvertGLEnumToString(ConvertBufferTargetToGLEnum(target));
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl/BufferImpl", "ValidateBufferTarget",
-                        std::format("Target {} ({}) is not valid.", bufferTargetStr, glTargetStr)));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateBufferName(Uint index, Bool allowZero) {
-            if (index == 0) {
-                if (allowZero) return true;
-
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl",
-                                                                               "ValidateBufferName",
-                                                                               "Buffer name 0 is not valid."));
-                return false;
-            }
-            Bool isValid = MG_State::pGLContext->ValidateBufferName(index);
-            if (isValid) return true;
+namespace MobileGL::MG_Impl::GLImpl::BufferImpl {
+    Bool ValidateBufferTarget(BufferTarget target) {
+        if (target == BufferTarget::Unknown) {
+            using namespace MG_Util;
+            String bufferTargetStr = ConvertBufferTargetToString(target);
+            String glTargetStr = ConvertGLEnumToString(ConvertBufferTargetToGLEnum(target));
             MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl", "ValidateBufferName",
-                                             std::format("Buffer name {} is not valid.", index)));
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>(
+                                            "MG_Impl/GLImpl/BufferImpl", "ValidateBufferTarget",
+                                            std::format("Target {} ({}) is not valid.", bufferTargetStr, glTargetStr)));
             return false;
         }
 
-        Bool ValidateBufferUsage(BufferUsage usage) {
-            if (usage != BufferUsage::Unknown) {
-                return true;
-            }
+        if (target == BufferTarget::Index && MG_State::pGLContext->GetBoundVertexArray() == nullptr) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl",
+                                                                           "ValidateBufferTarget",
+                                                                           "No vertex array object is bound."));
+            return false;
+        }
+
+        return true;
+    }
+
+    Bool ValidateBufferBindingPointTarget(BufferTarget target) {
+        if (target != BufferTarget::Uniform && target != BufferTarget::AtomicCounter &&
+            target != BufferTarget::TransformFeedback && target != BufferTarget::ShaderStorage) {
             using namespace MG_Util;
-            String bufferUsageStr = ConvertBufferUsageToString(usage);
-            String glUsageStr = ConvertGLEnumToString(ConvertBufferUsageToGLEnum(usage));
+            String bufferTargetStr = ConvertBufferTargetToString(target);
+            String glTargetStr = ConvertGLEnumToString(ConvertBufferTargetToGLEnum(target));
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>(
+                                            "MG_Impl/GLImpl/BufferImpl", "ValidateBufferTarget",
+                                            std::format("Target {} ({}) is not valid.", bufferTargetStr, glTargetStr)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateBufferName(Uint index, Bool allowZero) {
+        if (index == 0) {
+            if (allowZero) return true;
+
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl", "ValidateBufferName",
+                                                                      "Buffer name 0 is not valid."));
+            return false;
+        }
+        Bool isValid = MG_State::pGLContext->ValidateBufferName(index);
+        if (isValid) return true;
+        MG_State::pGLContext->RecordError(
+            ErrorCode::InvalidOperation,
+            MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl", "ValidateBufferName",
+                                         std::format("Buffer name {} is not valid.", index)));
+        return false;
+    }
+
+    Bool ValidateBufferUsage(BufferUsage usage) {
+        if (usage != BufferUsage::Unknown) {
+            return true;
+        }
+        using namespace MG_Util;
+        String bufferUsageStr = ConvertBufferUsageToString(usage);
+        String glUsageStr = ConvertGLEnumToString(ConvertBufferUsageToGLEnum(usage));
+        MG_State::pGLContext->RecordError(
+            ErrorCode::InvalidEnum,
+            MakeUnique<GenericErrorInfo>(
+                "MG_Impl/GLImpl/BufferImpl", "ValidateBufferUsage",
+                std::format("Usage {} ({}) is not one of the allowable values.", bufferUsageStr, glUsageStr)));
+        return false;
+    }
+
+    Bool ValidateBufferMappingAccess(Flags<BufferMappingAccessBit> accessBits) {
+        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 |
+                               BufferMappingAccessBit::Persistent | BufferMappingAccessBit::Coherent;
+
+        if ((accessBits & validBits) != accessBits) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidEnum,
-                MakeShared<GenericErrorInfo>(
-                    "MG_Impl/GLImpl/BufferImpl", "ValidateBufferUsage",
-                    std::format("Usage {} ({}) is not one of the allowable values.", bufferUsageStr, glUsageStr)));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl", "ValidateBufferMappingAccess",
+                                             "Access bits cannot contain invalid flags."));
             return false;
         }
 
-        Bool ValidateBufferMappingAccess(Flags<BufferMappingAccessBit> accessBits) {
-            if (accessBits == BufferMappingAccessBit::Null) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
-                                                  MakeShared<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 |
-                                   BufferMappingAccessBit::Persistent | BufferMappingAccessBit::Coherent;
-
-            if ((accessBits & validBits) != accessBits) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/BufferImpl", "ValidateBufferMappingAccess",
-                                                 "Access bits cannot contain invalid flags."));
-                return false;
-            }
-
-            return true;
-        }
-    } // namespace BufferImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+        return true;
+    }
+} // namespace MobileGL::MG_Impl::GLImpl::BufferImpl

MobileGL/MG_Impl/GLImpl/Buffer/Validators.h

@@ -10,12 +10,10 @@
 #include <Includes.h>
 #include <MG_State/GLState/BufferState/BufferObject.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace BufferImpl {
-        Bool ValidateBufferTarget(BufferTarget target);
-        Bool ValidateBufferName(Uint index, Bool allowZero = false);
-        Bool ValidateBufferUsage(BufferUsage usage);
-        Bool ValidateBufferMappingAccess(Flags<BufferMappingAccessBit> accessBits);
-        Bool ValidateBufferBindingPointTarget(BufferTarget target);
-    } // namespace BufferImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+namespace MobileGL::MG_Impl::GLImpl::BufferImpl {
+    Bool ValidateBufferTarget(BufferTarget target);
+    Bool ValidateBufferName(Uint index, Bool allowZero = false);
+    Bool ValidateBufferUsage(BufferUsage usage);
+    Bool ValidateBufferMappingAccess(Flags<BufferMappingAccessBit> accessBits);
+    Bool ValidateBufferBindingPointTarget(BufferTarget target);
+} // namespace MobileGL::MG_Impl::GLImpl::BufferImpl

MobileGL/MG_Impl/GLImpl/Drawing/GL_Drawing.h

@@ -9,34 +9,31 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-        void MultiDrawElementsIndirect(GLenum mode, GLenum type, const void* indirect, GLsizei drawcount,
-                                       GLsizei stride);
-        void MultiDrawArraysIndirect(GLenum mode, const void* indirect, GLsizei drawcount, GLsizei stride);
-        void DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type,
-                                         const void* indices, GLint basevertex);
-        void DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void* indices);
-        void DrawElementsInstancedBaseVertexBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
-                                                         GLsizei instancecount, GLint basevertex, GLuint baseinstance);
-        void DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices,
-                                             GLsizei instancecount, GLint basevertex);
-        void DrawElementsInstancedBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
-                                               GLsizei instancecount, GLuint baseinstance);
-        void DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type, const void* indices, GLsizei instancecount);
-        void DrawElementsIndirect(GLenum mode, GLenum type, const void* indirect);
-        void DrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count, GLsizei instancecount,
-                                             GLuint baseinstance);
-        void DrawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instancecount);
-        void DrawArraysIndirect(GLenum mode, const void* indirect);
-        void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices, GLint basevertex);
-        void DrawArrays(GLenum mode, GLint first, GLsizei count);
-        void MultiDrawElements(GLenum mode, const GLsizei* count, GLenum type, const void* const* indices,
-                               GLsizei drawcount);
-        void MultiDrawElementsBaseVertex(GLenum mode, const GLsizei* count, GLenum type, const void* const* indices,
-                                         GLsizei drawcount, const GLint* basevertex);
-        void Clear(GLbitfield mask);
-        void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices);
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl::GLImpl {
+    /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
+    void MultiDrawElementsIndirect(GLenum mode, GLenum type, const void* indirect, GLsizei drawcount, GLsizei stride);
+    void MultiDrawArraysIndirect(GLenum mode, const void* indirect, GLsizei drawcount, GLsizei stride);
+    void DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type,
+                                     const void* indices, GLint basevertex);
+    void DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void* indices);
+    void DrawElementsInstancedBaseVertexBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
+                                                     GLsizei instancecount, GLint basevertex, GLuint baseinstance);
+    void DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices,
+                                         GLsizei instancecount, GLint basevertex);
+    void DrawElementsInstancedBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
+                                           GLsizei instancecount, GLuint baseinstance);
+    void DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type, const void* indices, GLsizei instancecount);
+    void DrawElementsIndirect(GLenum mode, GLenum type, const void* indirect);
+    void DrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count, GLsizei instancecount,
+                                         GLuint baseinstance);
+    void DrawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instancecount);
+    void DrawArraysIndirect(GLenum mode, const void* indirect);
+    void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices, GLint basevertex);
+    void DrawArrays(GLenum mode, GLint first, GLsizei count);
+    void MultiDrawElements(GLenum mode, const GLsizei* count, GLenum type, const void* const* indices,
+                           GLsizei drawcount);
+    void MultiDrawElementsBaseVertex(GLenum mode, const GLsizei* count, GLenum type, const void* const* indices,
+                                     GLsizei drawcount, const GLint* basevertex);
+    void Clear(GLbitfield mask);
+    void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices);
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.cpp

@@ -38,11 +38,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         RenderbufferTarget rbTarget = MG_Util::ConvertGLEnumToRenderbufferTarget(target);
         if (!FramebufferImpl::ValidateRenderbufferTarget(rbTarget)) return;
         auto& bindingSlot = MG_State::pGLContext->GetRenderbufferBindingSlot(rbTarget);
-        auto renderbufferObject = bindingSlot.GetBoundObject();
+        auto& renderbufferObject = bindingSlot.GetBoundObject();
         if (!renderbufferObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "RenderbufferStorage_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "RenderbufferStorage_State",
                                              "Renderbuffer target is bound to no renderbuffer object."));
             return;
         }
@@ -50,7 +50,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!TextureImpl::ValidateTextureInternalFormat(format)) return;
         if (width < 0 || height < 0) {
             MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "RenderbufferStorage_State",
+                ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "RenderbufferStorage_State",
                                                                       "Width and height must be non-negative."));
             return;
         }
@@ -74,10 +74,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (n < 0) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GenRenderbuffers_State", "n must be non-negative"));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GenRenderbuffers_State", "n must be non-negative"));
             return;
         }
-        auto renderbufferNames = MG_State::pGLContext->GenRenderbufferNames(n);
+        static thread_local Vector<GLuint> renderbufferNames;
+        MG_State::pGLContext->GenRenderbufferNames(n, renderbufferNames);
         Memcpy(renderbuffers, renderbufferNames.data(), sizeof(GLuint) * static_cast<SizeT>(n));
     }
 
@@ -85,10 +86,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (n < 0) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GenFramebuffers_State", "n must be non-negative"));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GenFramebuffers_State", "n must be non-negative"));
             return;
         }
-        auto framebuffersNames = MG_State::pGLContext->GenFramebufferNames(n);
+        static thread_local Vector<GLuint> framebuffersNames;
+        MG_State::pGLContext->GenFramebufferNames(n, framebuffersNames);
         Memcpy(framebuffers, framebuffersNames.data(), sizeof(GLuint) * static_cast<SizeT>(n));
     }
 
@@ -119,11 +121,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!TextureImpl::ValidateTextureName(texture, true)) return;
 
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(framebufferTarget);
-        auto framebufferObject = bindingSlot.GetBoundObject();
+        auto& framebufferObject = bindingSlot.GetBoundObject();
         if (!framebufferObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferTexture2D_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferTexture2D_State",
                                              "Framebuffer target is bound to no framebuffer object."));
             return;
         }
@@ -133,11 +135,11 @@ namespace MobileGL::MG_Impl::GLImpl {
             return;
         }
 
-        auto textureObject = MG_State::pGLContext->GetTextureObject(texture);
+        auto& textureObject = MG_State::pGLContext->GetTextureObject(texture);
         if (!textureObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferTexture2D_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferTexture2D_State",
                                              std::format("Texture object {} is not valid.", texture)));
             return;
         }
@@ -166,11 +168,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!FramebufferImpl::ValidateFramebufferTarget(framebufferTarget)) return;
         if (!FramebufferImpl::ValidateRenderbufferName(renderbuffer)) return;
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(framebufferTarget);
-        auto framebufferObject = bindingSlot.GetBoundObject();
+        auto& framebufferObject = bindingSlot.GetBoundObject();
         if (!framebufferObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferRenderbuffer_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferRenderbuffer_State",
                                              "Framebuffer target is bound to no framebuffer object."));
             return;
         }
@@ -180,11 +182,11 @@ namespace MobileGL::MG_Impl::GLImpl {
             return;
         }
 
-        auto renderbufferObject = MG_State::pGLContext->GetRenderbufferObject(renderbuffer);
+        auto& renderbufferObject = MG_State::pGLContext->GetRenderbufferObject(renderbuffer);
         if (!renderbufferObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferRenderbuffer_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "FramebufferRenderbuffer_State",
                                              std::format("Renderbuffer object {} is not valid.", renderbuffer)));
             return;
         }
@@ -196,18 +198,18 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (n < 0) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "`n` is less than 0."));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "`n` is less than 0."));
             return;
         } else if (n > MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "`n` is greater than `GL_MAX_DRAW_BUFFERS`."));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "`n` is greater than `GL_MAX_DRAW_BUFFERS`."));
             return;
         }
 
         // Get bound framebuffer
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw);
-        auto fbo = bindingSlot.GetBoundObject();
+        auto& fbo = bindingSlot.GetBoundObject();
         bool isDefaultFBO = (fbo == FramebufferImpl::pDefaultFramebufferInfo->defaultFBO);
 
         static int existenceMap[(SizeT)FramebufferAttachmentType::FramebufferAttachmentTypeCount] = {-1};
@@ -220,7 +222,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             if (attType == FramebufferAttachmentType::Unknown) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
                                                  std::format("bufs[{}] = {} is not an accepted value.", i,
                                                              MG_Util::ConvertGLEnumToString(bufs[i]))));
                 return;
@@ -230,7 +232,7 @@ namespace MobileGL::MG_Impl::GLImpl {
                 attType <= FramebufferAttachmentType::Color31) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
+                    MakeUnique<GenericErrorInfo>(
                         "MG_Impl/GLImpl", __func__,
                         std::format(
                             "FBO is default FBO, but bufs[{}] = {} is one of the `GL_COLOR_ATTACHMENTn` tokens.", i,
@@ -242,7 +244,7 @@ namespace MobileGL::MG_Impl::GLImpl {
                 attType <= FramebufferAttachmentType::BackRight) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
+                    MakeUnique<GenericErrorInfo>(
                         "MG_Impl/GLImpl", __func__,
                         std::format("FBO is not default FBO, but bufs[{}] = {} is anything other than `GL_NONE` or "
                                     "one of the `GL_COLOR_ATTACHMENTn` tokens.",
@@ -253,7 +255,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             if (attType != FramebufferAttachmentType::None && existenceMap[(SizeT)attType] >= 0) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
                                                  std::format("a symbolic constant other than `GL_NONE` appears "
                                                              "more than once in bufs. bufs[{}] == bufs[{}] == {}.",
                                                              i, existenceMap[(SizeT)attType],
@@ -267,7 +269,7 @@ namespace MobileGL::MG_Impl::GLImpl {
                 (SizeT)FramebufferAttachmentType::Color0 + MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
                                                  std::format("bufs[{}] == {} indicates a color buffer that does "
                                                              "not exist in the current GL context.",
                                                              i, MG_Util::ConvertGLEnumToString(bufs[i]))));
@@ -297,7 +299,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (attType == FramebufferAttachmentType::Unknown) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidEnum,
-                MakeShared<GenericErrorInfo>(
+                MakeUnique<GenericErrorInfo>(
                     "MG_Impl/GLImpl", __func__,
                     std::format("`mode` = {} is not an accepted value.", MG_Util::ConvertGLEnumToString(mode))));
             return;
@@ -305,7 +307,7 @@ namespace MobileGL::MG_Impl::GLImpl {
 
         // Get bound framebuffer
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read);
-        auto fbo = bindingSlot.GetBoundObject();
+        auto& fbo = bindingSlot.GetBoundObject();
         fbo->SetReadBuffer(attType);
     }
 
@@ -313,13 +315,13 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (n < 0) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteRenderbuffers_State", "n must be non-negative."));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteRenderbuffers_State", "n must be non-negative."));
             return;
         }
 
         if (!renderbuffers) {
             MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteRenderbuffers_State",
+                ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteRenderbuffers_State",
                                                                       "Renderbuffer names array cannot be null."));
             return;
         }
@@ -336,13 +338,13 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (n < 0) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteFramebuffers_State", "n must be non-negative."));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteFramebuffers_State", "n must be non-negative."));
             return;
         }
 
         if (!framebuffers) {
             MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
-                                              MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteFramebuffers_State",
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteFramebuffers_State",
                                                                            "Framebuffer names array cannot be null."));
             return;
         }
@@ -360,11 +362,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!FramebufferImpl::ValidateFramebufferTarget(framebufferTarget)) return GL_FRAMEBUFFER_UNDEFINED;
 
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(framebufferTarget);
-        auto framebufferObject = bindingSlot.GetBoundObject();
+        auto& framebufferObject = bindingSlot.GetBoundObject();
         if (!framebufferObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "CheckFramebufferStatus_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "CheckFramebufferStatus_State",
                                              "Framebuffer target is bound to no framebuffer object."));
             return GL_FRAMEBUFFER_UNDEFINED;
         }
@@ -382,11 +384,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         RenderbufferTarget renderbufferTarget = MG_Util::ConvertGLEnumToRenderbufferTarget(target);
         if (!FramebufferImpl::ValidateRenderbufferTarget(renderbufferTarget)) return;
 
-        auto renderbufferObject = MG_State::pGLContext->GetRenderbufferObject(renderbuffer);
-        if (!renderbufferObject) {
+        Bool doesRenderbufferCreated = MG_State::pGLContext->ValidateRenderbufferObject(renderbuffer);
+        if (!doesRenderbufferCreated) {
             MG_State::pGLContext->CreateRenderbufferObject(renderbuffer);
-            renderbufferObject = MG_State::pGLContext->GetRenderbufferObject(renderbuffer);
         }
+        auto& renderbufferObject = MG_State::pGLContext->GetRenderbufferObject(renderbuffer);
 
         auto& bindingSlot = MG_State::pGLContext->GetRenderbufferBindingSlot(renderbufferTarget);
         bindingSlot.Bind(renderbufferObject);
@@ -403,11 +405,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         FramebufferTarget framebufferTarget = MG_Util::ConvertGLEnumToFramebufferTarget(target);
         if (!FramebufferImpl::ValidateFramebufferTarget(framebufferTarget)) return;
 
-        auto framebufferObject = MG_State::pGLContext->GetFramebufferObject(framebuffer);
-        if (!framebufferObject) {
+        Bool doesFramebufferCreated = MG_State::pGLContext->ValidateFramebufferObject(framebuffer);
+        if (!doesFramebufferCreated) {
             MG_State::pGLContext->CreateFramebufferObject(framebuffer);
-            framebufferObject = MG_State::pGLContext->GetFramebufferObject(framebuffer);
         }
+        auto& framebufferObject = MG_State::pGLContext->GetFramebufferObject(framebuffer);
 
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(framebufferTarget);
         bindingSlot.Bind(framebufferObject);
@@ -419,11 +421,11 @@ namespace MobileGL::MG_Impl::GLImpl {
         RenderbufferTarget renderbufferTarget = MG_Util::ConvertGLEnumToRenderbufferTarget(target);
         if (!FramebufferImpl::ValidateRenderbufferTarget(renderbufferTarget)) return;
         auto& bindingSlot = MG_State::pGLContext->GetRenderbufferBindingSlot(renderbufferTarget);
-        auto renderbufferObject = bindingSlot.GetBoundObject();
+        auto& renderbufferObject = bindingSlot.GetBoundObject();
         if (!renderbufferObject) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GetRenderbufferParameteriv_State",
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetRenderbufferParameteriv_State",
                                              "Renderbuffer target is bound to no renderbuffer object."));
             return;
         }
@@ -462,7 +464,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         default:
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidEnum,
-                MakeShared<GenericErrorInfo>(
+                MakeUnique<GenericErrorInfo>(
                     "MG_Impl/GLImpl", "GetRenderbufferParameteriv_State",
                     std::format("pname {} is not an accepted value.", MG_Util::ConvertGLEnumToString(pname))));
             return;
@@ -492,7 +494,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         // Check width/height
         if (width < 0 || height < 0) {
             MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
-                                              MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                                            "Width and height must be non-negative"));
             return;
         }
@@ -501,7 +503,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!TextureImpl::ValidateTextureInputFormat(textureInputFormat)) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidEnum,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State", "Invalid format"));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State", "Invalid format"));
             return;
         }
 
@@ -509,17 +511,17 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!TextureImpl::ValidateTexturePixelDataType(texturePixelDataType)) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidEnum,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State", "Invalid pixel data type"));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State", "Invalid pixel data type"));
             return;
         }
 
         // Get bound framebuffer
         auto& bindingSlot = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read);
-        auto framebufferObject = bindingSlot.GetBoundObject();
+        auto& framebufferObject = bindingSlot.GetBoundObject();
 
         if (!framebufferObject) {
             MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                              MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                                            "No framebuffer bound to read target"));
             return;
         }
@@ -528,7 +530,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!framebufferObject->CheckCompleteness()) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidFramebufferOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State", "Framebuffer is incomplete"));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State", "Framebuffer is incomplete"));
             return;
         }
 
@@ -537,7 +539,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             if (!framebufferObject->GetAttachment(FramebufferAttachmentType::Stencil).IsValid()) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                  "No stencil buffer for stencil index format"));
                 return;
             }
@@ -545,7 +547,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             if (!framebufferObject->GetAttachment(FramebufferAttachmentType::Depth).IsValid()) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                  "No depth buffer for depth component format"));
                 return;
             }
@@ -554,7 +556,7 @@ namespace MobileGL::MG_Impl::GLImpl {
                 !framebufferObject->GetAttachment(FramebufferAttachmentType::Stencil).IsValid()) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                  "No depth/stencil buffer for depth-stencil format"));
                 return;
             }
@@ -563,7 +565,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             if (texturePixelDataType != TexturePixelDataType::UnsignedInt248 &&
                 texturePixelDataType != TexturePixelDataType::Float32UnsignedInt248Rev) {
                 MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                                          "Invalid type for depth-stencil format"));
                 return;
             }
@@ -577,7 +579,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             // Check if PBO is mapped
             if (pixelPackBufferObject->IsMapped()) {
                 MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    ErrorCode::InvalidOperation, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                                               "Pixel pack buffer is currently mapped"));
                 return;
             }
@@ -587,7 +589,7 @@ namespace MobileGL::MG_Impl::GLImpl {
             if (reinterpret_cast<uintptr_t>(pixels) % typeSize != 0) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                  "Pixel data not aligned for pixel pack buffer"));
                 return;
             }
@@ -595,11 +597,11 @@ namespace MobileGL::MG_Impl::GLImpl {
 
         // Check multisampling
         if (framebufferObject->GetAttachment(FramebufferAttachmentType::Color0).IsRenderbuffer()) {
-            auto rbo = framebufferObject->GetAttachment(FramebufferAttachmentType::Color0).GetRenderbuffer();
+            auto& rbo = framebufferObject->GetAttachment(FramebufferAttachmentType::Color0).GetRenderbuffer();
             if (rbo && rbo->GetSamples() > 1) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ReadPixels_State",
                                                  "ReadPixels not supported for multisampled framebuffers"));
                 return;
             }
@@ -732,6 +734,6 @@ namespace MobileGL::MG_Impl::GLImpl {
     }
 
     namespace FramebufferImpl {
-        DefaultFramebufferInfo* pDefaultFramebufferInfo;
+        UniquePtr<DefaultFramebufferInfo> pDefaultFramebufferInfo;
     } // namespace FramebufferImpl
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.h

@@ -11,51 +11,49 @@
 #include <Includes.h>
 #include <MG_State/GLState/Core.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-        void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
-        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 RenderbufferStorageMultisample(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
-                                            GLsizei height);
-        void RenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
-        GLboolean IsRenderbuffer(GLuint renderbuffer);
-        void GetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params);
-        void GenRenderbuffers(GLsizei n, GLuint* renderbuffers);
-        void FramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
-        void DeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers);
-        void BindRenderbuffer(GLenum target, GLuint renderbuffer);
-        void SampleMaski(GLuint maskNumber, GLbitfield mask);
-        GLboolean IsFramebuffer(GLuint framebuffer);
-        void GetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params);
-        void GenFramebuffers(GLsizei n, GLuint* framebuffers);
-        void FramebufferTextureLayer(GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer);
-        void FramebufferTexture3D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level,
-                                  GLint zoffset);
-        void FramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
-        void FramebufferTexture1D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
-        void FramebufferTexture(GLenum target, GLenum attachment, GLuint texture, GLint level);
-        void DrawBuffer(GLenum buf);
-        void DrawBuffers(GLsizei n, const GLenum* bufs);
-        void ReadBuffer(GLenum src);
-        void DeleteFramebuffers(GLsizei n, const GLuint* framebuffers);
-        GLenum CheckFramebufferStatus(GLenum target);
-        void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
-                             GLint dstY1, GLbitfield mask, GLenum filter);
-        void BindFramebuffer(GLenum target, GLuint framebuffer);
+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 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 RenderbufferStorageMultisample(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
+                                        GLsizei height);
+    void RenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+    GLboolean IsRenderbuffer(GLuint renderbuffer);
+    void GetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params);
+    void GenRenderbuffers(GLsizei n, GLuint* renderbuffers);
+    void FramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+    void DeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers);
+    void BindRenderbuffer(GLenum target, GLuint renderbuffer);
+    void SampleMaski(GLuint maskNumber, GLbitfield mask);
+    GLboolean IsFramebuffer(GLuint framebuffer);
+    void GetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params);
+    void GenFramebuffers(GLsizei n, GLuint* framebuffers);
+    void FramebufferTextureLayer(GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer);
+    void FramebufferTexture3D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level,
+                              GLint zoffset);
+    void FramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+    void FramebufferTexture1D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+    void FramebufferTexture(GLenum target, GLenum attachment, GLuint texture, GLint level);
+    void DrawBuffer(GLenum buf);
+    void DrawBuffers(GLsizei n, const GLenum* bufs);
+    void ReadBuffer(GLenum src);
+    void DeleteFramebuffers(GLsizei n, const GLuint* framebuffers);
+    GLenum CheckFramebufferStatus(GLenum target);
+    void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
+                         GLint dstY1, GLbitfield mask, GLenum filter);
+    void BindFramebuffer(GLenum target, GLuint framebuffer);
 
-        namespace FramebufferImpl {
-            struct DefaultFramebufferInfo {
-                SharedPtr<MG_State::GLState::FramebufferObject> defaultFBO;
-                SharedPtr<MG_State::GLState::ITextureObject> colorAttachment;
-                SharedPtr<MG_State::GLState::ITextureObject> depthAttachment;
-                SharedPtr<MG_State::GLState::ITextureObject> stencilAttachment;
-            };
+    namespace FramebufferImpl {
+        struct DefaultFramebufferInfo {
+            SharedPtr<MG_State::GLState::FramebufferObject> defaultFBO;
+            SharedPtr<MG_State::GLState::ITextureObject> colorAttachment;
+            SharedPtr<MG_State::GLState::ITextureObject> depthAttachment;
+            SharedPtr<MG_State::GLState::ITextureObject> stencilAttachment;
+        };
 
-            extern DefaultFramebufferInfo* pDefaultFramebufferInfo;
-        } // namespace FramebufferImpl
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+        extern UniquePtr<DefaultFramebufferInfo> pDefaultFramebufferInfo;
+    } // namespace FramebufferImpl
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Framebuffer/Validators.cpp

@@ -13,85 +13,82 @@
 #include <MG_Util/Converters/MGToGL/FramebufferEnumConverter.h>
 #include <MG_Util/Converters/MGToStr/FramebufferEnumConverter.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace FramebufferImpl {
-        Bool ValidateFramebufferTarget(FramebufferTarget target) {
-            if (target == FramebufferTarget::Unknown) {
-                using namespace MG_Util;
-                String bufferTargetStr = ConvertFramebufferTargetToString(target);
-                String glTargetStr = ConvertGLEnumToString(ConvertFramebufferTargetToGLEnum(target));
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferTarget",
-                        std::format("Target {} ({}) is not valid.", bufferTargetStr, glTargetStr)));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateFramebufferName(Uint index, Bool allowZero) {
-            if (index == 0 && !allowZero) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferName",
-                                                 "Framebuffer name 0 is not valid in this situation."));
-                return false;
-            }
-            Bool isValid = MG_State::pGLContext->ValidateFramebufferName(index);
-            if (isValid) return true;
+namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl {
+    Bool ValidateFramebufferTarget(FramebufferTarget target) {
+        if (target == FramebufferTarget::Unknown) {
+            using namespace MG_Util;
+            String bufferTargetStr = ConvertFramebufferTargetToString(target);
+            String glTargetStr = ConvertGLEnumToString(ConvertFramebufferTargetToGLEnum(target));
             MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferName",
-                                             std::format("Framebuffer name {} is not valid.", index)));
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>(
+                                            "MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferTarget",
+                                            std::format("Target {} ({}) is not valid.", bufferTargetStr, glTargetStr)));
             return false;
         }
+        return true;
+    }
 
-        Bool ValidateFramebufferAttachmentType(FramebufferAttachmentType attachment) {
-            if (attachment == FramebufferAttachmentType::Unknown) {
-                using namespace MG_Util;
-                String attachmentStr = ConvertFramebufferAttachmentTypeToString(attachment);
-                String glAttachmentStr = ConvertGLEnumToString(ConvertFramebufferAttachmentTypeToGLEnum(attachment));
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferAttachmentType",
-                        std::format("Attachment type {} ({}) is not valid.", attachmentStr, glAttachmentStr)));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateRenderbufferTarget(RenderbufferTarget target) {
-            if (target == RenderbufferTarget::Unknown) {
-                using namespace MG_Util;
-                String renderbufferTargetStr = ConvertRenderbufferTargetToString(target);
-                String glTargetStr = ConvertGLEnumToString(ConvertRenderbufferTargetToGLEnum(target));
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl/FramebufferImpl", "ValidateRenderbufferTarget",
-                        std::format("Target {} ({}) is not valid.", renderbufferTargetStr, glTargetStr)));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateRenderbufferName(Uint index, Bool allowZero) {
-            if (index == 0 && !allowZero) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateRenderbufferName",
-                                                 "Renderbuffer name 0 is not valid in this situation."));
-                return false;
-            }
-            Bool isValid = MG_State::pGLContext->ValidateRenderbufferName(index);
-            if (isValid) return true;
+    Bool ValidateFramebufferName(Uint index, Bool allowZero) {
+        if (index == 0 && !allowZero) {
             MG_State::pGLContext->RecordError(
-                ErrorCode::InvalidOperation,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateRenderbufferName",
-                                             std::format("Renderbuffer name {} is not valid.", index)));
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferName",
+                                             "Framebuffer name 0 is not valid in this situation."));
             return false;
         }
-    } // namespace FramebufferImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+        Bool isValid = MG_State::pGLContext->ValidateFramebufferName(index);
+        if (isValid) return true;
+        MG_State::pGLContext->RecordError(
+            ErrorCode::InvalidOperation,
+            MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferName",
+                                         std::format("Framebuffer name {} is not valid.", index)));
+        return false;
+    }
+
+    Bool ValidateFramebufferAttachmentType(FramebufferAttachmentType attachment) {
+        if (attachment == FramebufferAttachmentType::Unknown) {
+            using namespace MG_Util;
+            String attachmentStr = ConvertFramebufferAttachmentTypeToString(attachment);
+            String glAttachmentStr = ConvertGLEnumToString(ConvertFramebufferAttachmentTypeToGLEnum(attachment));
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl/FramebufferImpl", "ValidateFramebufferAttachmentType",
+                    std::format("Attachment type {} ({}) is not valid.", attachmentStr, glAttachmentStr)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateRenderbufferTarget(RenderbufferTarget target) {
+        if (target == RenderbufferTarget::Unknown) {
+            using namespace MG_Util;
+            String renderbufferTargetStr = ConvertRenderbufferTargetToString(target);
+            String glTargetStr = ConvertGLEnumToString(ConvertRenderbufferTargetToGLEnum(target));
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl/FramebufferImpl", "ValidateRenderbufferTarget",
+                    std::format("Target {} ({}) is not valid.", renderbufferTargetStr, glTargetStr)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateRenderbufferName(Uint index, Bool allowZero) {
+        if (index == 0 && !allowZero) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateRenderbufferName",
+                                             "Renderbuffer name 0 is not valid in this situation."));
+            return false;
+        }
+        Bool isValid = MG_State::pGLContext->ValidateRenderbufferName(index);
+        if (isValid) return true;
+        MG_State::pGLContext->RecordError(
+            ErrorCode::InvalidOperation,
+            MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl/FramebufferImpl", "ValidateRenderbufferName",
+                                         std::format("Renderbuffer name {} is not valid.", index)));
+        return false;
+    }
+} // namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl

MobileGL/MG_Impl/GLImpl/Framebuffer/Validators.h

@@ -10,12 +10,10 @@
 #include <Includes.h>
 #include <MG_State/GLState/FramebufferState/FramebufferObject.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace FramebufferImpl {
-        Bool ValidateFramebufferTarget(FramebufferTarget target);
-        Bool ValidateFramebufferName(Uint index, Bool allowZero = true);
-        Bool ValidateFramebufferAttachmentType(FramebufferAttachmentType attachment);
-        Bool ValidateRenderbufferTarget(RenderbufferTarget target);
-        Bool ValidateRenderbufferName(Uint index, Bool allowZero = true);
-    } // namespace FramebufferImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl {
+    Bool ValidateFramebufferTarget(FramebufferTarget target);
+    Bool ValidateFramebufferName(Uint index, Bool allowZero = true);
+    Bool ValidateFramebufferAttachmentType(FramebufferAttachmentType attachment);
+    Bool ValidateRenderbufferTarget(RenderbufferTarget target);
+    Bool ValidateRenderbufferName(Uint index, Bool allowZero = true);
+} // namespace MobileGL::MG_Impl::GLImpl::FramebufferImpl

MobileGL/MG_Impl/GLImpl/Getter/GL_Getter.cpp

@@ -7,8 +7,6 @@
 // End of Source File Header
 
 #include "GL_Getter.h"
-#include "GL/gl.h"
-#include "MG_Util/Debug/Log.h"
 #include <Config.h>
 #include <MGGitHash.h>
 #include <MG_State/GLState/Core.h>
@@ -127,7 +125,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         if (!params) {
             MG_State::pGLContext->RecordError(
                 ErrorCode::InvalidValue,
-                MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GetIntegerv", "params pointer cannot be null"));
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetIntegerv", "params pointer cannot be null"));
             return;
         }
 
@@ -146,9 +144,9 @@ namespace MobileGL::MG_Impl::GLImpl {
             *params = 0; // TODO
             break;
         case GL_ARRAY_BUFFER_BINDING: {
-            auto obj = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Vertex).GetBoundObject();
+            auto& obj = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Vertex).GetBoundObject();
             if (obj)
-                *params = obj->GetExternalIndex();
+                *params = (GLint)obj->GetExternalIndex();
             else
                 *params = 0;
             break;
@@ -256,14 +254,14 @@ namespace MobileGL::MG_Impl::GLImpl {
             break;
         case GL_CURRENT_PROGRAM: {
             const auto& currentProgram = MG_State::pGLContext->GetCurrentProgram();
-            *params = currentProgram ? currentProgram->GetExternalIndex() : 0;
+            *params = currentProgram ? (GLint)currentProgram->GetExternalIndex() : 0;
             break;
         }
         case GL_DEPTH_CLEAR_VALUE:
-            *params = MG_State::pGLContext->GetClearDepth();
+            *params = (GLint)MG_State::pGLContext->GetClearDepth();
             break;
         case GL_DEPTH_FUNC:
-            *params = MG_Util::ConvertDepthTestFuncToGLEnum(MG_State::pGLContext->GetDepthFunc());
+            *params = (GLint)MG_Util::ConvertDepthTestFuncToGLEnum(MG_State::pGLContext->GetDepthFunc());
             break;
         case GL_DEPTH_RANGE:
             *params = 0; // TODO
@@ -288,12 +286,12 @@ namespace MobileGL::MG_Impl::GLImpl {
             break;
         case GL_DRAW_FRAMEBUFFER_BINDING: {
             const auto& FBO = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw).GetBoundObject();
-            *params = FBO ? FBO->GetExternalIndex() : 0;
+            *params = FBO ? (GLint)FBO->GetExternalIndex() : 0;
             break;
         }
         case GL_READ_FRAMEBUFFER_BINDING: {
             const auto& FBO = MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read).GetBoundObject();
-            *params = FBO ? FBO->GetExternalIndex() : 0;
+            *params = FBO ? (GLint)FBO->GetExternalIndex() : 0;
             break;
         }
         case GL_ELEMENT_ARRAY_BUFFER_BINDING: {
@@ -302,7 +300,7 @@ namespace MobileGL::MG_Impl::GLImpl {
                 break;
             }
             const auto& bufferObject = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Index).GetBoundObject();
-            *params = bufferObject ? bufferObject->GetExternalIndex() : 0;
+            *params = bufferObject ? (GLint)bufferObject->GetExternalIndex() : 0;
             break;
         }
         case GL_FRAGMENT_SHADER_DERIVATIVE_HINT:
@@ -886,7 +884,7 @@ namespace MobileGL::MG_Impl::GLImpl {
         default:
             MGLOG_E("glGetIntegerv: Invalid enum %s (0x%X)", MG_Util::ConvertGLEnumToString(pname).c_str(), pname);
             MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
-                                              MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GetIntegerv",
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetIntegerv",
                                                                            std::format("Invalid enum: 0x{:X}", pname)));
 
             break;
@@ -894,7 +892,10 @@ namespace MobileGL::MG_Impl::GLImpl {
     }
 
     GLenum GetError() {
-        ErrorCode errorCode = MG_State::pGLContext->PopGLError().value_or(Error{ErrorCode::NoError, nullptr}).code;
-        return MG_Util::ConvertErrorCodeToGLEnum(errorCode);
+        auto error = MG_State::pGLContext->PopGLError();
+        if (!error || !error->get()) {
+            return GL_NO_ERROR;
+        }
+        return MG_Util::ConvertErrorCodeToGLEnum(error->get()->code);
     }
 } // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Program/GL_Program.h

@@ -9,61 +9,59 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        void AttachShader(GLuint program, GLuint shader);
-        void BindAttribLocation(GLuint program, GLuint index, const GLchar* name);
-        void CompileShader(GLuint shader);
-        GLuint CreateProgram(void);
-        GLuint CreateShader(GLenum type);
-        void DeleteProgram(GLuint program);
-        void DeleteShader(GLuint shader);
-        void DetachShader(GLuint program, GLuint shader);
-        void GetActiveAttrib(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLint* size, GLenum* type,
-                             GLchar* name);
-        void GetActiveUniform(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLint* size, GLenum* type,
-                              GLchar* name);
-        void GetAttachedShaders(GLuint program, GLsizei maxCount, GLsizei* count, GLuint* shaders);
-        GLint GetAttribLocation(GLuint program, const GLchar* name);
-        void GetProgramiv(GLuint program, GLenum pname, GLint* params);
-        void GetProgramInfoLog(GLuint program, GLsizei bufSize, GLsizei* length, GLchar* infoLog);
-        void GetShaderiv(GLuint shader, GLenum pname, GLint* params);
-        void GetShaderInfoLog(GLuint shader, GLsizei bufSize, GLsizei* length, GLchar* infoLog);
-        void GetShaderSource(GLuint shader, GLsizei bufSize, GLsizei* length, GLchar* source);
-        GLint GetUniformLocation(GLuint program, const GLchar* name);
-        void GetUniformfv(GLuint program, GLint location, GLfloat* params);
-        void GetUniformiv(GLuint program, GLint location, GLint* params);
-        GLboolean IsProgram(GLuint program);
-        GLboolean IsShader(GLuint shader);
-        void LinkProgram(GLuint program);
-        void ShaderSource(GLuint shader, GLsizei count, const GLchar* const* string, const GLint* length);
-        void UseProgram(GLuint program);
-        void Uniform1f(GLint location, GLfloat v0);
-        void Uniform2f(GLint location, GLfloat v0, GLfloat v1);
-        void Uniform3f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
-        void Uniform4f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
-        void Uniform1i(GLint location, GLint v0);
-        void Uniform2i(GLint location, GLint v0, GLint v1);
-        void Uniform3i(GLint location, GLint v0, GLint v1, GLint v2);
-        void Uniform4i(GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
-        void Uniform1fv(GLint location, GLsizei count, const GLfloat* value);
-        void Uniform2fv(GLint location, GLsizei count, const GLfloat* value);
-        void Uniform3fv(GLint location, GLsizei count, const GLfloat* value);
-        void Uniform4fv(GLint location, GLsizei count, const GLfloat* value);
-        void Uniform1iv(GLint location, GLsizei count, const GLint* value);
-        void Uniform2iv(GLint location, GLsizei count, const GLint* value);
-        void Uniform3iv(GLint location, GLsizei count, const GLint* value);
-        void Uniform4iv(GLint location, GLsizei count, const GLint* value);
-        void UniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
-        void UniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
-        void UniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
-        GLuint GetUniformBlockIndex(GLuint program, const GLchar* uniformBlockName);
-        void UniformBlockBinding(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
-        void GetActiveUniformBlockiv(GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint* params);
-        void GetActiveUniformBlockName(GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei* length,
-                                       GLchar* uniformBlockName);
-        void BindFragDataLocation(GLuint program, GLuint colorNumber, const char* name);
-        GLint GetFragDataLocation(GLuint program, const char* name);
-        void ValidateProgram(GLuint program);
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl::GLImpl {
+    void AttachShader(GLuint program, GLuint shader);
+    void BindAttribLocation(GLuint program, GLuint index, const GLchar* name);
+    void CompileShader(GLuint shader);
+    GLuint CreateProgram(void);
+    GLuint CreateShader(GLenum type);
+    void DeleteProgram(GLuint program);
+    void DeleteShader(GLuint shader);
+    void DetachShader(GLuint program, GLuint shader);
+    void GetActiveAttrib(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLint* size, GLenum* type,
+                         GLchar* name);
+    void GetActiveUniform(GLuint program, GLuint index, GLsizei bufSize, GLsizei* length, GLint* size, GLenum* type,
+                          GLchar* name);
+    void GetAttachedShaders(GLuint program, GLsizei maxCount, GLsizei* count, GLuint* shaders);
+    GLint GetAttribLocation(GLuint program, const GLchar* name);
+    void GetProgramiv(GLuint program, GLenum pname, GLint* params);
+    void GetProgramInfoLog(GLuint program, GLsizei bufSize, GLsizei* length, GLchar* infoLog);
+    void GetShaderiv(GLuint shader, GLenum pname, GLint* params);
+    void GetShaderInfoLog(GLuint shader, GLsizei bufSize, GLsizei* length, GLchar* infoLog);
+    void GetShaderSource(GLuint shader, GLsizei bufSize, GLsizei* length, GLchar* source);
+    GLint GetUniformLocation(GLuint program, const GLchar* name);
+    void GetUniformfv(GLuint program, GLint location, GLfloat* params);
+    void GetUniformiv(GLuint program, GLint location, GLint* params);
+    GLboolean IsProgram(GLuint program);
+    GLboolean IsShader(GLuint shader);
+    void LinkProgram(GLuint program);
+    void ShaderSource(GLuint shader, GLsizei count, const GLchar* const* string, const GLint* length);
+    void UseProgram(GLuint program);
+    void Uniform1f(GLint location, GLfloat v0);
+    void Uniform2f(GLint location, GLfloat v0, GLfloat v1);
+    void Uniform3f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
+    void Uniform4f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
+    void Uniform1i(GLint location, GLint v0);
+    void Uniform2i(GLint location, GLint v0, GLint v1);
+    void Uniform3i(GLint location, GLint v0, GLint v1, GLint v2);
+    void Uniform4i(GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
+    void Uniform1fv(GLint location, GLsizei count, const GLfloat* value);
+    void Uniform2fv(GLint location, GLsizei count, const GLfloat* value);
+    void Uniform3fv(GLint location, GLsizei count, const GLfloat* value);
+    void Uniform4fv(GLint location, GLsizei count, const GLfloat* value);
+    void Uniform1iv(GLint location, GLsizei count, const GLint* value);
+    void Uniform2iv(GLint location, GLsizei count, const GLint* value);
+    void Uniform3iv(GLint location, GLsizei count, const GLint* value);
+    void Uniform4iv(GLint location, GLsizei count, const GLint* value);
+    void UniformMatrix2fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void UniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    void UniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+    GLuint GetUniformBlockIndex(GLuint program, const GLchar* uniformBlockName);
+    void UniformBlockBinding(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
+    void GetActiveUniformBlockiv(GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint* params);
+    void GetActiveUniformBlockName(GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei* length,
+                                   GLchar* uniformBlockName);
+    void BindFragDataLocation(GLuint program, GLuint colorNumber, const char* name);
+    GLint GetFragDataLocation(GLuint program, const char* name);
+    void ValidateProgram(GLuint program);
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/RenderState/GL_RenderState.cpp

@@ -7,474 +7,467 @@
 // End of Source File Header
 
 #include "GL_RenderState.h"
-#include "MG_State/GLState/RenderState/RenderState.h"
-#include "MG_Util/Converters/GLToStr/GLEnumConverter.h"
 #include <MG_State/GLState/Core.h>
+#include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
 #include <MG_Util/Converters/GLToMG/RenderStateEnumConverter.h>
 #include <MG_Util/Converters/MGToGL/RenderStateEnumConverter.h>
 #include <MG_Util/Converters/MGToStr/RenderStateEnumConverter.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        void Viewport_State(GLint x, GLint y, GLsizei width, GLsizei height) {
-            if (width < 0 || height < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "Viewport_State",
-                                                                          "Width abd height must be non-negative."));
-                return;
-            }
-
-            MG_State::pGLContext->SetViewport(IntVec4(x, y, width, height));
-        }
-
-        void StencilOpSeparate_State(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass) {
-            // TODO: implement
-        }
-
-        void StencilOp_State(GLenum fail, GLenum zfail, GLenum zpass) {
-            // TODO: implement
-        }
-
-        void StencilMaskSeparate_State(GLenum face, GLuint mask) {
-            // TODO: implement
-        }
-
-        void StencilMask_State(GLuint mask) {
-            // TODO: implement
-        }
-
-        void StencilFuncSeparate_State(GLenum face, GLenum func, GLint ref, GLuint mask) {
-            // TODO: implement
-        }
-
-        void StencilFunc_State(GLenum func, GLint ref, GLuint mask) {
-            // TODO: implement
-        }
-
-        void Scissor_State(GLint x, GLint y, GLsizei width, GLsizei height) {
-            if (width < 0 || height < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "Scissor_State",
-                                                                          "Width abd height must be non-negative."));
-                return;
-            }
-
-            MG_State::pGLContext->SetScissorBox(IntVec4(x, y, width, height));
-        }
-
-        void SampleCoverage_State(GLfloat value, GLboolean invert) {
-            // TODO: implement
-        }
-
-        void PolygonOffset_State(GLfloat factor, GLfloat units) {
-            // TODO: implement
-        }
-
-        void PolygonMode_State(GLenum face, GLenum mode) {
-            // TODO: implement
-        }
-
-        void PointSize_State(GLfloat size) {
-            // TODO: implement
-        }
-
-        void PointParameterf_State(GLenum pname, GLfloat param) {
-            // TODO: implement
-        }
-
-        void PointParameteri_State(GLenum pname, GLint param) {
-            // TODO: implement
-        }
-
-        void PixelStorei_State(GLenum pname, GLint param) {
-            MGLOG_D("%s: %s = %d", __func__, MG_Util::ConvertGLEnumToString(pname).c_str(), param);
-            PixelStoreParam pixelStoreParam = MG_Util::ConvertGLEnumToPixelStoreParam(pname);
-            if (pixelStoreParam == PixelStoreParam::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "PixelStorei_State",
-                                                 "Pixel store param enum " +
-                                                     MG_Util::ConvertPixelStoreParamToString(pixelStoreParam) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(pname) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetPixelStoreParam(pixelStoreParam, param);
-        }
-
-        void LogicOp_State(GLenum opcode) {
-            // TODO: implement
-        }
-
-        void LineWidth_State(GLfloat width) {
-            // TODO: implement
-        }
-
-        GLboolean IsEnabledi_State(GLenum target, GLuint index) {
-            CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(target);
-            if (capInput == CapabilityInput::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "IsEnabledi_State",
-                                                 "Capability enum " +
-                                                     MG_Util::ConvertCapabilityInputToString(capInput) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(target) + ") is not supported."));
-                return GL_FALSE;
-            }
-
-            return MG_State::pGLContext->IsCapabilityEnabledIndexed(capInput, index) ? GL_TRUE : GL_FALSE;
-        }
-
-        GLboolean IsEnabled_State(GLenum cap) {
-            CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(cap);
-            if (capInput == CapabilityInput::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>(
-                                                "MG_Impl/GLImpl", "IsEnabled_State",
-                                                "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
-                                                    "(" + MG_Util::ConvertGLEnumToString(cap) + ") is not supported."));
-                return GL_FALSE;
-            }
-
-            return MG_State::pGLContext->IsCapabilityEnabled(capInput) ? GL_TRUE : GL_FALSE;
-        }
-
-        void Hint_State(GLenum target, GLenum mode) {
-            // TODO: implement
-        }
-
-        void FrontFace_State(GLenum mode) {
-            // TODO: implement
-        }
-
-        void Enable_State(GLenum cap) {
-            CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(cap);
-            if (capInput == CapabilityInput::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>(
-                                                "MG_Impl/GLImpl", "Enable_State",
-                                                "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
-                                                    "(" + MG_Util::ConvertGLEnumToString(cap) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetCapability(capInput, true);
-        }
-
-        void Disable_State(GLenum cap) {
-            CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(cap);
-            if (capInput == CapabilityInput::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>(
-                                                "MG_Impl/GLImpl", "Disable_State",
-                                                "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
-                                                    "(" + MG_Util::ConvertGLEnumToString(cap) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetCapability(capInput, false);
-        }
-
-        void DepthRange_State(GLclampd near_val, GLclampd far_val) {
-            // TODO: implement
-        }
-
-        void DepthMask_State(GLboolean flag) {
-            MG_State::pGLContext->SetDepthMask(flag == GL_TRUE);
-        }
-
-        void DepthFunc_State(GLenum func) {
-            DepthTestFunc depthFunc = MG_Util::ConvertGLEnumToDepthTestFunc(func);
-            if (depthFunc == DepthTestFunc::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DepthFunc_State",
-                                                 "Depth function enum " +
-                                                     MG_Util::ConvertDepthTestFuncToString(depthFunc) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(func) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetDepthFunc(depthFunc);
-        }
-
-        void CullFace_State(GLenum mode) {
-            CullFaceMode cullFaceMode = MG_Util::ConvertGLEnumToCullFaceMode(mode);
-            if (cullFaceMode == CullFaceMode::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "CullFace_State",
-                                                 "Cull face mode enum " +
-                                                     MG_Util::ConvertCullFaceModeToString(cullFaceMode) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(mode) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetCullFaceMode(cullFaceMode);
-        }
-
-        void ColorMask_State(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha) {
-            MG_State::pGLContext->SetColorMask(
-                BoolVec4(red == GL_TRUE, green == GL_TRUE, blue == GL_TRUE, alpha == GL_TRUE));
-        }
-
-        void ClampColor_State(GLenum target, GLenum clamp) {
-            // TODO: implement
-        }
-
-        void BlendFuncSeparate_State(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha) {
-            BlendFactor srcRGB = MG_Util::ConvertGLEnumToBlendFactor(sfactorRGB);
-            BlendFactor dstRGB = MG_Util::ConvertGLEnumToBlendFactor(dfactorRGB);
-            BlendFactor srcAlpha = MG_Util::ConvertGLEnumToBlendFactor(sfactorAlpha);
-            BlendFactor dstAlpha = MG_Util::ConvertGLEnumToBlendFactor(dfactorAlpha);
-
-            if (srcRGB == BlendFactor::Unknown || dstRGB == BlendFactor::Unknown || srcAlpha == BlendFactor::Unknown ||
-                dstAlpha == BlendFactor::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "BlendFuncSeparate_State",
-                                                 "One of the blend factor enums is not supported: srcRGB " +
-                                                     MG_Util::ConvertBlendFactorToString(srcRGB) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(sfactorRGB) + "), dstRGB " +
-                                                     MG_Util::ConvertBlendFactorToString(dstRGB) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(dfactorRGB) + "), srcAlpha " +
-                                                     MG_Util::ConvertBlendFactorToString(srcAlpha) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(sfactorAlpha) + "), dstAlpha " +
-                                                     MG_Util::ConvertBlendFactorToString(dstAlpha) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(dfactorAlpha) + ")."));
-                return;
-            }
-
-            MG_State::pGLContext->SetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
-        }
-
-        void BlendFunc_State(GLenum sfactor, GLenum dfactor) {
-            BlendFuncSeparate_State(sfactor, dfactor, sfactor, dfactor);
-        }
-
-        void BlendEquation_State(GLenum mode) {
-            // TODO: implement
-        }
-
-        void BlendColor_State(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
-            // TODO: implement
-        }
-
-        void ClearStencil_State(GLint s) {
-            MG_State::pGLContext->SetClearStencil(static_cast<Int>(s));
-        }
-
-        void ClearDepth_State(GLclampd depth) {
-            MG_State::pGLContext->SetClearDepth(static_cast<Float>(depth));
-        }
+namespace MobileGL::MG_Impl::GLImpl {
+    void Viewport_State(GLint x, GLint y, GLsizei width, GLsizei height) {
+        if (width < 0 || height < 0) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "Viewport_State",
+                                                                           "Width abd height must be non-negative."));
+            return;
+        }
+
+        MG_State::pGLContext->SetViewport(IntVec4(x, y, width, height));
+    }
+
+    void StencilOpSeparate_State(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass) {
+        // TODO: implement
+    }
+
+    void StencilOp_State(GLenum fail, GLenum zfail, GLenum zpass) {
+        // TODO: implement
+    }
+
+    void StencilMaskSeparate_State(GLenum face, GLuint mask) {
+        // TODO: implement
+    }
+
+    void StencilMask_State(GLuint mask) {
+        // TODO: implement
+    }
+
+    void StencilFuncSeparate_State(GLenum face, GLenum func, GLint ref, GLuint mask) {
+        // TODO: implement
+    }
+
+    void StencilFunc_State(GLenum func, GLint ref, GLuint mask) {
+        // TODO: implement
+    }
+
+    void Scissor_State(GLint x, GLint y, GLsizei width, GLsizei height) {
+        if (width < 0 || height < 0) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "Scissor_State",
+                                                                           "Width abd height must be non-negative."));
+            return;
+        }
+
+        MG_State::pGLContext->SetScissorBox(IntVec4(x, y, width, height));
+    }
+
+    void SampleCoverage_State(GLfloat value, GLboolean invert) {
+        // TODO: implement
+    }
+
+    void PolygonOffset_State(GLfloat factor, GLfloat units) {
+        // TODO: implement
+    }
+
+    void PolygonMode_State(GLenum face, GLenum mode) {
+        // TODO: implement
+    }
+
+    void PointSize_State(GLfloat size) {
+        // TODO: implement
+    }
+
+    void PointParameterf_State(GLenum pname, GLfloat param) {
+        // TODO: implement
+    }
+
+    void PointParameteri_State(GLenum pname, GLint param) {
+        // TODO: implement
+    }
+
+    void PixelStorei_State(GLenum pname, GLint param) {
+        MGLOG_D("%s: %s = %d", __func__, MG_Util::ConvertGLEnumToString(pname).c_str(), param);
+        PixelStoreParam pixelStoreParam = MG_Util::ConvertGLEnumToPixelStoreParam(pname);
+        if (pixelStoreParam == PixelStoreParam::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "PixelStorei_State",
+                                             "Pixel store param enum " +
+                                                 MG_Util::ConvertPixelStoreParamToString(pixelStoreParam) + "(" +
+                                                 MG_Util::ConvertGLEnumToString(pname) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetPixelStoreParam(pixelStoreParam, param);
+    }
+
+    void LogicOp_State(GLenum opcode) {
+        // TODO: implement
+    }
+
+    void LineWidth_State(GLfloat width) {
+        // TODO: implement
+    }
+
+    GLboolean IsEnabledi_State(GLenum target, GLuint index) {
+        CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(target);
+        if (capInput == CapabilityInput::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "IsEnabledi_State",
+                                             "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(target) + ") is not supported."));
+            return GL_FALSE;
+        }
+
+        return MG_State::pGLContext->IsCapabilityEnabledIndexed(capInput, index) ? GL_TRUE : GL_FALSE;
+    }
+
+    GLboolean IsEnabled_State(GLenum cap) {
+        CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(cap);
+        if (capInput == CapabilityInput::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "IsEnabled_State",
+                                             "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(cap) + ") is not supported."));
+            return GL_FALSE;
+        }
+
+        return MG_State::pGLContext->IsCapabilityEnabled(capInput) ? GL_TRUE : GL_FALSE;
+    }
+
+    void Hint_State(GLenum target, GLenum mode) {
+        // TODO: implement
+    }
+
+    void FrontFace_State(GLenum mode) {
+        // TODO: implement
+    }
+
+    void Enable_State(GLenum cap) {
+        CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(cap);
+        if (capInput == CapabilityInput::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "Enable_State",
+                                             "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(cap) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetCapability(capInput, true);
+    }
+
+    void Disable_State(GLenum cap) {
+        CapabilityInput capInput = MG_Util::ConvertGLEnumToCapabilityInput(cap);
+        if (capInput == CapabilityInput::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "Disable_State",
+                                             "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(cap) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetCapability(capInput, false);
+    }
+
+    void DepthRange_State(GLclampd near_val, GLclampd far_val) {
+        // TODO: implement
+    }
+
+    void DepthMask_State(GLboolean flag) {
+        MG_State::pGLContext->SetDepthMask(flag == GL_TRUE);
+    }
+
+    void DepthFunc_State(GLenum func) {
+        DepthTestFunc depthFunc = MG_Util::ConvertGLEnumToDepthTestFunc(func);
+        if (depthFunc == DepthTestFunc::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DepthFunc_State",
+                                             "Depth function enum " + MG_Util::ConvertDepthTestFuncToString(depthFunc) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(func) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetDepthFunc(depthFunc);
+    }
+
+    void CullFace_State(GLenum mode) {
+        CullFaceMode cullFaceMode = MG_Util::ConvertGLEnumToCullFaceMode(mode);
+        if (cullFaceMode == CullFaceMode::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "CullFace_State",
+                                             "Cull face mode enum " +
+                                                 MG_Util::ConvertCullFaceModeToString(cullFaceMode) + "(" +
+                                                 MG_Util::ConvertGLEnumToString(mode) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetCullFaceMode(cullFaceMode);
+    }
+
+    void ColorMask_State(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha) {
+        MG_State::pGLContext->SetColorMask(
+            BoolVec4(red == GL_TRUE, green == GL_TRUE, blue == GL_TRUE, alpha == GL_TRUE));
+    }
+
+    void ClampColor_State(GLenum target, GLenum clamp) {
+        // TODO: implement
+    }
+
+    void BlendFuncSeparate_State(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha) {
+        BlendFactor srcRGB = MG_Util::ConvertGLEnumToBlendFactor(sfactorRGB);
+        BlendFactor dstRGB = MG_Util::ConvertGLEnumToBlendFactor(dfactorRGB);
+        BlendFactor srcAlpha = MG_Util::ConvertGLEnumToBlendFactor(sfactorAlpha);
+        BlendFactor dstAlpha = MG_Util::ConvertGLEnumToBlendFactor(dfactorAlpha);
+
+        if (srcRGB == BlendFactor::Unknown || dstRGB == BlendFactor::Unknown || srcAlpha == BlendFactor::Unknown ||
+            dstAlpha == BlendFactor::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "BlendFuncSeparate_State",
+                                             "One of the blend factor enums is not supported: srcRGB " +
+                                                 MG_Util::ConvertBlendFactorToString(srcRGB) + "(" +
+                                                 MG_Util::ConvertGLEnumToString(sfactorRGB) + "), dstRGB " +
+                                                 MG_Util::ConvertBlendFactorToString(dstRGB) + "(" +
+                                                 MG_Util::ConvertGLEnumToString(dfactorRGB) + "), srcAlpha " +
+                                                 MG_Util::ConvertBlendFactorToString(srcAlpha) + "(" +
+                                                 MG_Util::ConvertGLEnumToString(sfactorAlpha) + "), dstAlpha " +
+                                                 MG_Util::ConvertBlendFactorToString(dstAlpha) + "(" +
+                                                 MG_Util::ConvertGLEnumToString(dfactorAlpha) + ")."));
+            return;
+        }
+
+        MG_State::pGLContext->SetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
+    }
+
+    void BlendFunc_State(GLenum sfactor, GLenum dfactor) {
+        BlendFuncSeparate_State(sfactor, dfactor, sfactor, dfactor);
+    }
+
+    void BlendEquation_State(GLenum mode) {
+        // TODO: implement
+    }
+
+    void BlendColor_State(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
+        // TODO: implement
+    }
+
+    void ClearStencil_State(GLint s) {
+        MG_State::pGLContext->SetClearStencil(static_cast<Int>(s));
+    }
+
+    void ClearDepth_State(GLclampd depth) {
+        MG_State::pGLContext->SetClearDepth(static_cast<Float>(depth));
+    }
+
+    void ClearColor_State(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
+        MG_State::pGLContext->SetClearColor(FloatVec4(red, green, blue, alpha));
+    }
+
+    void BlendFuncSeparatei_State(GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha) {
+        if (buf >= MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl", "BlendFuncSeparatei_State",
+                    "Buffer index " + std::to_string(buf) + " is out of range. Max supported is " +
+                        std::to_string(MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS - 1) + "."));
+            return;
+        }
+
+        BlendFactor srcRGBM = MG_Util::ConvertGLEnumToBlendFactor(srcRGB);
+        BlendFactor dstRGBM = MG_Util::ConvertGLEnumToBlendFactor(dstRGB);
+        BlendFactor srcAlphaM = MG_Util::ConvertGLEnumToBlendFactor(srcAlpha);
+        BlendFactor dstAlphaM = MG_Util::ConvertGLEnumToBlendFactor(dstAlpha);
+        MG_State::pGLContext->SetBlendFuncIndexed(buf, srcRGBM, dstRGBM, srcAlphaM, dstAlphaM);
+    }
+
+    void Disablei_State(GLenum target, GLuint index) {
+        auto capInput = MG_Util::ConvertGLEnumToCapabilityInput(target);
+        if (capInput == CapabilityInput::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "Disablei_State",
+                                             "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(target) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetCapabilityIndexed(capInput, index, false);
+    }
+
+    void Enablei_State(GLenum target, GLuint index) {
+        auto capInput = MG_Util::ConvertGLEnumToCapabilityInput(target);
+        if (capInput == CapabilityInput::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "Enablei_State",
+                                             "Capability enum " + MG_Util::ConvertCapabilityInputToString(capInput) +
+                                                 "(" + MG_Util::ConvertGLEnumToString(target) + ") is not supported."));
+            return;
+        }
+
+        MG_State::pGLContext->SetCapabilityIndexed(capInput, index, true);
+    }
+
+    /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
+    void BlendFuncSeparatei(GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha) {
+        BlendFuncSeparatei_State(buf, srcRGB, dstRGB, srcAlpha, dstAlpha);
+    }
+
+    void Disablei(GLenum target, GLuint index) {
+        Disablei_State(target, index);
+    }
+
+    void Enablei(GLenum target, GLuint index) {
+        Enablei_State(target, index);
+    }
+
+    void BlendFunc(GLenum sfactor, GLenum dfactor) {
+        BlendFunc_State(sfactor, dfactor);
+    }
+
+    void Viewport(GLint x, GLint y, GLsizei width, GLsizei height) {
+        Viewport_State(x, y, width, height);
+    }
+
+    void StencilOpSeparate(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass) {
+        StencilOpSeparate_State(face, sfail, dpfail, dppass);
+    }
+
+    void StencilOp(GLenum fail, GLenum zfail, GLenum zpass) {
+        StencilOp_State(fail, zfail, zpass);
+    }
+
+    void StencilMaskSeparate(GLenum face, GLuint mask) {
+        StencilMaskSeparate_State(face, mask);
+    }
+
+    void StencilMask(GLuint mask) {
+        StencilMask_State(mask);
+    }
+
+    void StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask) {
+        StencilFuncSeparate_State(face, func, ref, mask);
+    }
+
+    void StencilFunc(GLenum func, GLint ref, GLuint mask) {
+        StencilFunc_State(func, ref, mask);
+    }
+
+    void Scissor(GLint x, GLint y, GLsizei width, GLsizei height) {
+        Scissor_State(x, y, width, height);
+    }
+
+    void SampleCoverage(GLfloat value, GLboolean invert) {
+        SampleCoverage_State(value, invert);
+    }
+
+    void PolygonOffset(GLfloat factor, GLfloat units) {
+        PolygonOffset_State(factor, units);
+    }
+
+    void PolygonMode(GLenum face, GLenum mode) {
+        PolygonMode_State(face, mode);
+    }
+
+    void PointSize(GLfloat size) {
+        PointSize_State(size);
+    }
+
+    void PointParameterf(GLenum pname, GLfloat param) {
+        PointParameterf_State(pname, param);
+    }
+
+    void PointParameteri(GLenum pname, GLint param) {
+        PointParameteri_State(pname, param);
+    }
+
+    void PixelStorei(GLenum pname, GLint param) {
+        PixelStorei_State(pname, param);
+    }
+
+    void LogicOp(GLenum opcode) {
+        LogicOp_State(opcode);
+    }
 
-        void ClearColor_State(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
-            MG_State::pGLContext->SetClearColor(FloatVec4(red, green, blue, alpha));
-        }
-
-        void BlendFuncSeparatei_State(GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha) {
-            if (buf >= MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", "BlendFuncSeparatei_State",
-                        "Buffer index " + std::to_string(buf) + " is out of range. Max supported is " +
-                            std::to_string(MG_State::GLState::FramebufferObject::MAX_DRAW_BUFFERS - 1) + "."));
-                return;
-            }
-
-            BlendFactor srcRGBM = MG_Util::ConvertGLEnumToBlendFactor(srcRGB);
-            BlendFactor dstRGBM = MG_Util::ConvertGLEnumToBlendFactor(dstRGB);
-            BlendFactor srcAlphaM = MG_Util::ConvertGLEnumToBlendFactor(srcAlpha);
-            BlendFactor dstAlphaM = MG_Util::ConvertGLEnumToBlendFactor(dstAlpha);
-            MG_State::pGLContext->SetBlendFuncIndexed(buf, srcRGBM, dstRGBM, srcAlphaM, dstAlphaM);
-        }
-
-        void Disablei_State(GLenum target, GLuint index) {
-            auto capInput = MG_Util::ConvertGLEnumToCapabilityInput(target);
-            if (capInput == CapabilityInput::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "Disablei_State",
-                                                 "Capability enum " +
-                                                     MG_Util::ConvertCapabilityInputToString(capInput) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(target) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetCapabilityIndexed(capInput, index, false);
-        }
-
-        void Enablei_State(GLenum target, GLuint index) {
-            auto capInput = MG_Util::ConvertGLEnumToCapabilityInput(target);
-            if (capInput == CapabilityInput::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "Enablei_State",
-                                                 "Capability enum " +
-                                                     MG_Util::ConvertCapabilityInputToString(capInput) + "(" +
-                                                     MG_Util::ConvertGLEnumToString(target) + ") is not supported."));
-                return;
-            }
-
-            MG_State::pGLContext->SetCapabilityIndexed(capInput, index, true);
-        }
-
-        /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
-        void BlendFuncSeparatei(GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha) {
-            BlendFuncSeparatei_State(buf, srcRGB, dstRGB, srcAlpha, dstAlpha);
-        }
-
-        void Disablei(GLenum target, GLuint index) {
-            Disablei_State(target, index);
-        }
-
-        void Enablei(GLenum target, GLuint index) {
-            Enablei_State(target, index);
-        }
-
-        void BlendFunc(GLenum sfactor, GLenum dfactor) {
-            BlendFunc_State(sfactor, dfactor);
-        }
-
-        void Viewport(GLint x, GLint y, GLsizei width, GLsizei height) {
-            Viewport_State(x, y, width, height);
-        }
-
-        void StencilOpSeparate(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass) {
-            StencilOpSeparate_State(face, sfail, dpfail, dppass);
-        }
-
-        void StencilOp(GLenum fail, GLenum zfail, GLenum zpass) {
-            StencilOp_State(fail, zfail, zpass);
-        }
-
-        void StencilMaskSeparate(GLenum face, GLuint mask) {
-            StencilMaskSeparate_State(face, mask);
-        }
-
-        void StencilMask(GLuint mask) {
-            StencilMask_State(mask);
-        }
-
-        void StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask) {
-            StencilFuncSeparate_State(face, func, ref, mask);
-        }
-
-        void StencilFunc(GLenum func, GLint ref, GLuint mask) {
-            StencilFunc_State(func, ref, mask);
-        }
-
-        void Scissor(GLint x, GLint y, GLsizei width, GLsizei height) {
-            Scissor_State(x, y, width, height);
-        }
-
-        void SampleCoverage(GLfloat value, GLboolean invert) {
-            SampleCoverage_State(value, invert);
-        }
-
-        void PolygonOffset(GLfloat factor, GLfloat units) {
-            PolygonOffset_State(factor, units);
-        }
+    void LineWidth(GLfloat width) {
+        LineWidth_State(width);
+    }
+
+    GLboolean IsEnabledi(GLenum target, GLuint index) {
+        return IsEnabledi_State(target, index);
+    }
+
+    GLboolean IsEnabled(GLenum cap) {
+        return IsEnabled_State(cap);
+    }
 
-        void PolygonMode(GLenum face, GLenum mode) {
-            PolygonMode_State(face, mode);
-        }
+    void Hint(GLenum target, GLenum mode) {
+        Hint_State(target, mode);
+    }
 
-        void PointSize(GLfloat size) {
-            PointSize_State(size);
-        }
+    void FrontFace(GLenum mode) {
+        FrontFace_State(mode);
+    }
+
+    void Enable(GLenum cap) {
+        Enable_State(cap);
+    }
 
-        void PointParameterf(GLenum pname, GLfloat param) {
-            PointParameterf_State(pname, param);
-        }
+    void Disable(GLenum cap) {
+        Disable_State(cap);
+    }
 
-        void PointParameteri(GLenum pname, GLint param) {
-            PointParameteri_State(pname, param);
-        }
+    void DepthRange(GLclampd near_val, GLclampd far_val) {
+        DepthRange_State(near_val, far_val);
+    }
 
-        void PixelStorei(GLenum pname, GLint param) {
-            PixelStorei_State(pname, param);
-        }
-
-        void LogicOp(GLenum opcode) {
-            LogicOp_State(opcode);
-        }
-
-        void LineWidth(GLfloat width) {
-            LineWidth_State(width);
-        }
+    void DepthMask(GLboolean flag) {
+        DepthMask_State(flag);
+    }
 
-        GLboolean IsEnabledi(GLenum target, GLuint index) {
-            return IsEnabledi_State(target, index);
-        }
+    void DepthFunc(GLenum func) {
+        DepthFunc_State(func);
+    }
 
-        GLboolean IsEnabled(GLenum cap) {
-            return IsEnabled_State(cap);
-        }
+    void CullFace(GLenum mode) {
+        CullFace_State(mode);
+    }
 
-        void Hint(GLenum target, GLenum mode) {
-            Hint_State(target, mode);
-        }
+    void ColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha) {
+        ColorMask_State(red, green, blue, alpha);
+    }
 
-        void FrontFace(GLenum mode) {
-            FrontFace_State(mode);
-        }
+    void ClampColor(GLenum target, GLenum clamp) {
+        ClampColor_State(target, clamp);
+    }
 
-        void Enable(GLenum cap) {
-            Enable_State(cap);
-        }
+    void BlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha) {
+        BlendFuncSeparate_State(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha);
+    }
 
-        void Disable(GLenum cap) {
-            Disable_State(cap);
-        }
+    void BlendEquation(GLenum mode) {
+        BlendEquation_State(mode);
+    }
 
-        void DepthRange(GLclampd near_val, GLclampd far_val) {
-            DepthRange_State(near_val, far_val);
-        }
+    void BlendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
+        BlendColor_State(red, green, blue, alpha);
+    }
 
-        void DepthMask(GLboolean flag) {
-            DepthMask_State(flag);
-        }
+    void ClearStencil(GLint s) {
+        ClearStencil_State(s);
+    }
 
-        void DepthFunc(GLenum func) {
-            DepthFunc_State(func);
-        }
+    void ClearDepth(GLclampd depth) {
+        ClearDepth_State(depth);
+    }
 
-        void CullFace(GLenum mode) {
-            CullFace_State(mode);
-        }
-
-        void ColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha) {
-            ColorMask_State(red, green, blue, alpha);
-        }
-
-        void ClampColor(GLenum target, GLenum clamp) {
-            ClampColor_State(target, clamp);
-        }
-
-        void BlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha) {
-            BlendFuncSeparate_State(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha);
-        }
-
-        void BlendEquation(GLenum mode) {
-            BlendEquation_State(mode);
-        }
-
-        void BlendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
-            BlendColor_State(red, green, blue, alpha);
-        }
-
-        void ClearStencil(GLint s) {
-            ClearStencil_State(s);
-        }
-
-        void ClearDepth(GLclampd depth) {
-            ClearDepth_State(depth);
-        }
-
-        void ClearColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
-            ClearColor_State(red, green, blue, alpha);
-        }
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+    void ClearColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
+        ClearColor_State(red, green, blue, alpha);
+    }
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/RenderState/GL_RenderState.h

@@ -9,47 +9,45 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-        void BlendFuncSeparatei(GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
-        void Disablei(GLenum target, GLuint index);
-        void Enablei(GLenum target, GLuint index);
-        void BlendFunc(GLenum sfactor, GLenum dfactor);
-        void Viewport(GLint x, GLint y, GLsizei width, GLsizei height);
-        void StencilOpSeparate(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
-        void StencilOp(GLenum fail, GLenum zfail, GLenum zpass);
-        void StencilMaskSeparate(GLenum face, GLuint mask);
-        void StencilMask(GLuint mask);
-        void StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
-        void StencilFunc(GLenum func, GLint ref, GLuint mask);
-        void Scissor(GLint x, GLint y, GLsizei width, GLsizei height);
-        void SampleCoverage(GLfloat value, GLboolean invert);
-        void PolygonOffset(GLfloat factor, GLfloat units);
-        void PolygonMode(GLenum face, GLenum mode);
-        void PointSize(GLfloat size);
-        void PointParameterf(GLenum pname, GLfloat param);
-        void PointParameteri(GLenum pname, GLint param);
-        void PixelStorei(GLenum pname, GLint param);
-        void LogicOp(GLenum opcode);
-        void LineWidth(GLfloat width);
-        GLboolean IsEnabledi(GLenum target, GLuint index);
-        GLboolean IsEnabled(GLenum cap);
-        void Hint(GLenum target, GLenum mode);
-        void FrontFace(GLenum mode);
-        void Enable(GLenum cap);
-        void Disable(GLenum cap);
-        void DepthRange(GLclampd near_val, GLclampd far_val);
-        void DepthMask(GLboolean flag);
-        void DepthFunc(GLenum func);
-        void CullFace(GLenum mode);
-        void ColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
-        void ClampColor(GLenum target, GLenum clamp);
-        void BlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
-        void BlendEquation(GLenum mode);
-        void BlendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
-        void ClearStencil(GLint s);
-        void ClearDepth(GLclampd depth);
-        void ClearColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl::GLImpl {
+    /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
+    void BlendFuncSeparatei(GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
+    void Disablei(GLenum target, GLuint index);
+    void Enablei(GLenum target, GLuint index);
+    void BlendFunc(GLenum sfactor, GLenum dfactor);
+    void Viewport(GLint x, GLint y, GLsizei width, GLsizei height);
+    void StencilOpSeparate(GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
+    void StencilOp(GLenum fail, GLenum zfail, GLenum zpass);
+    void StencilMaskSeparate(GLenum face, GLuint mask);
+    void StencilMask(GLuint mask);
+    void StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
+    void StencilFunc(GLenum func, GLint ref, GLuint mask);
+    void Scissor(GLint x, GLint y, GLsizei width, GLsizei height);
+    void SampleCoverage(GLfloat value, GLboolean invert);
+    void PolygonOffset(GLfloat factor, GLfloat units);
+    void PolygonMode(GLenum face, GLenum mode);
+    void PointSize(GLfloat size);
+    void PointParameterf(GLenum pname, GLfloat param);
+    void PointParameteri(GLenum pname, GLint param);
+    void PixelStorei(GLenum pname, GLint param);
+    void LogicOp(GLenum opcode);
+    void LineWidth(GLfloat width);
+    GLboolean IsEnabledi(GLenum target, GLuint index);
+    GLboolean IsEnabled(GLenum cap);
+    void Hint(GLenum target, GLenum mode);
+    void FrontFace(GLenum mode);
+    void Enable(GLenum cap);
+    void Disable(GLenum cap);
+    void DepthRange(GLclampd near_val, GLclampd far_val);
+    void DepthMask(GLboolean flag);
+    void DepthFunc(GLenum func);
+    void CullFace(GLenum mode);
+    void ColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
+    void ClampColor(GLenum target, GLenum clamp);
+    void BlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
+    void BlendEquation(GLenum mode);
+    void BlendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+    void ClearStencil(GLint s);
+    void ClearDepth(GLclampd depth);
+    void ClearColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Sampler/GL_Sampler.cpp

@@ -12,254 +12,258 @@
 #include <MG_Util/Converters/GLToMG/TextureEnumConverter.h>
 #include <MG_Util/Converters/MGToGL/TextureEnumConverter.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        void SetSamplerParam_State(GLuint sampler, GLenum pname, const void* param, bool isFloat, bool isInteger) {
+namespace MobileGL::MG_Impl::GLImpl {
+    void SetSamplerParam_State(GLuint sampler, GLenum pname, const void* param, bool isFloat, bool isInteger) {
+        if (!SamplerImpl::ValidateSamplerName(sampler)) return;
+
+        Bool doesSamplerObjectCreated = MG_State::pGLContext->ValidateSamplerObject(sampler);
+        if (!doesSamplerObjectCreated) {
+            // Create one for compatibility
+            MG_State::pGLContext->CreateSamplerObject(sampler);
+        }
+        auto& samplerObj = MG_State::pGLContext->GetSamplerObject(sampler);
+        if (!SamplerImpl::ValidateSamplerObject(sampler)) return;
+
+        using namespace MG_Util;
+        switch (pname) {
+        case GL_TEXTURE_WRAP_S:
+            samplerObj->SetWrapS(MG_Util::ConvertGLEnumToSamplerWrapMode(*(const GLint*)param));
+            break;
+        case GL_TEXTURE_WRAP_T:
+            samplerObj->SetWrapT(MG_Util::ConvertGLEnumToSamplerWrapMode(*(const GLint*)param));
+            break;
+        case GL_TEXTURE_WRAP_R:
+            samplerObj->SetWrapR(MG_Util::ConvertGLEnumToSamplerWrapMode(*(const GLint*)param));
+            break;
+        case GL_TEXTURE_MIN_FILTER:
+            samplerObj->SetMinFilter(MG_Util::ConvertGLEnumToSamplerFilterMode(*(const GLint*)param));
+            samplerObj->SetMipmapMode(MG_Util::ConvertGLEnumToSamplerMipmapMode(*(const GLint*)param));
+            break;
+        case GL_TEXTURE_MAG_FILTER:
+            samplerObj->SetMagFilter(MG_Util::ConvertGLEnumToSamplerFilterMode(*(const GLint*)param));
+            break;
+        case GL_TEXTURE_MIN_LOD:
+            samplerObj->SetLodRange(*(const GLfloat*)param, samplerObj->GetMaxLod());
+            break;
+        case GL_TEXTURE_MAX_LOD:
+            samplerObj->SetLodRange(samplerObj->GetMinLod(), *(const GLfloat*)param);
+            break;
+        case GL_TEXTURE_LOD_BIAS:
+            samplerObj->SetLodBias(*(const GLfloat*)param);
+            break;
+        case GL_TEXTURE_COMPARE_MODE:
+            samplerObj->SetCompareMode(MG_Util::ConvertGLEnumToSamplerCompareMode(*(const GLint*)param));
+            break;
+        case GL_TEXTURE_COMPARE_FUNC:
+            samplerObj->SetSamplerCompareFunc(MG_Util::ConvertGLEnumToSamplerCompareFunc(*(const GLint*)param));
+            break;
+        default:
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "SetSamplerParam_State",
+                                                                           "Invalid pname for sampler parameter"));
+        }
+    }
+
+    void GetSamplerParam_State(GLuint sampler, GLenum pname, void* params, bool isFloat, bool isInteger) {
+        if (!SamplerImpl::ValidateSamplerName(sampler)) return;
+
+        Bool doesSamplerObjectCreated = MG_State::pGLContext->ValidateSamplerObject(sampler);
+        if (!doesSamplerObjectCreated) {
+            // Create one for compatibility
+            MG_State::pGLContext->CreateSamplerObject(sampler);
+        }
+        auto& samplerObj = MG_State::pGLContext->GetSamplerObject(sampler);
+        if (!SamplerImpl::ValidateSamplerObject(sampler)) return;
+
+        using namespace MG_Util;
+        switch (pname) {
+        case GL_TEXTURE_WRAP_S:
+            *(GLuint*)params = MG_Util::ConvertSamplerWrapModeToGLEnum(samplerObj->GetWrapS());
+            break;
+        case GL_TEXTURE_WRAP_T:
+            *(GLuint*)params = MG_Util::ConvertSamplerWrapModeToGLEnum(samplerObj->GetWrapT());
+            break;
+        case GL_TEXTURE_WRAP_R:
+            *(GLuint*)params = MG_Util::ConvertSamplerWrapModeToGLEnum(samplerObj->GetWrapR());
+            break;
+        case GL_TEXTURE_MIN_FILTER:
+            *(GLuint*)params =
+                MG_Util::ConvertSamplerFilterModeToGLEnum(samplerObj->GetMinFilter(), samplerObj->GetMipmapMode());
+            break;
+        case GL_TEXTURE_MAG_FILTER:
+            *(GLuint*)params =
+                MG_Util::ConvertSamplerFilterModeToGLEnum(samplerObj->GetMagFilter(), SamplerMipmapMode::None);
+            break;
+        case GL_TEXTURE_MIN_LOD:
+            *(GLfloat*)params = samplerObj->GetMinLod();
+            break;
+        case GL_TEXTURE_MAX_LOD:
+            *(GLfloat*)params = samplerObj->GetMaxLod();
+            break;
+        case GL_TEXTURE_LOD_BIAS:
+            *(GLfloat*)params = samplerObj->GetLodBias();
+            break;
+        case GL_TEXTURE_COMPARE_MODE:
+            *(GLuint*)params = MG_Util::ConvertSamplerCompareModeToGLEnum(samplerObj->GetCompareMode());
+            break;
+        case GL_TEXTURE_COMPARE_FUNC:
+            *(GLuint*)params = MG_Util::ConvertSamplerCompareFuncToGLEnum(samplerObj->GetSamplerCompareFunc());
+            break;
+        default:
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GetSamplerParam_State",
+                                                                           "Invalid pname for sampler parameter"));
+        }
+    }
+
+    GLboolean IsSampler_State(GLuint sampler) {
+        return MG_State::pGLContext->ValidateSamplerObject(sampler) ? GL_TRUE : GL_FALSE;
+    }
+
+    // migrate below functions without "_State" into this section
+    void GenSamplers_State(GLsizei count, GLuint* samplers) {
+        if (count < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GenSamplers", "count must be non-negative"));
+            return;
+        }
+
+        static thread_local Vector<GLuint> names;
+        MG_State::pGLContext->GenSamplerNames(count, names);
+        Memcpy(samplers, names.data(), count * sizeof(GLuint));
+    }
+
+    void DeleteSamplers_State(GLsizei count, const GLuint* samplers) {
+        if (count < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteSamplers", "count must be non-negative"));
+            return;
+        }
+
+        for (GLsizei i = 0; i < count; ++i) {
+            if (samplers[i] != 0) {
+                MG_State::pGLContext->MarkSamplerObjectForDeletion(samplers[i]);
+            }
+        }
+    }
+
+    void CreateSamplers_State(GLsizei n, GLuint* samplers) {
+        if (n < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GenSamplers", "count must be non-negative"));
+            return;
+        }
+
+        static thread_local Vector<GLuint> names;
+        MG_State::pGLContext->GenSamplerNames(n, names);
+        Memcpy(samplers, names.data(), n * sizeof(GLuint));
+        for (GLsizei i = 0; i < n; ++i) {
+            samplers[i] = names[i];
+            MG_State::pGLContext->CreateSamplerObject(names[i]);
+        }
+    }
+
+    void BindSampler_State(GLuint unit, GLuint sampler) {
+        if (unit >= MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "BindSampler", "texture unit out of range"));
+            return;
+        }
+
+        auto& textureUnit = MG_State::pGLContext->GetTextureUnitObject((Int)unit);
+        if (sampler == 0) {
+            textureUnit.SetSamplerObject(nullptr);
+        } else {
             if (!SamplerImpl::ValidateSamplerName(sampler)) return;
-
-            auto samplerObj = MG_State::pGLContext->GetSamplerObject(sampler);
-            if (!samplerObj) {
-                samplerObj = MG_State::pGLContext->CreateSamplerObject(sampler); // for compatibility
+            Bool doesSamplerObjectCreated = MG_State::pGLContext->ValidateSamplerObject(sampler);
+            if (!doesSamplerObjectCreated) {
+                MG_State::pGLContext->CreateSamplerObject(sampler);
             }
-            if (!SamplerImpl::ValidateSamplerObject(sampler)) return;
+            auto& samplerObject = MG_State::pGLContext->GetSamplerObject(sampler);
 
-            using namespace MG_Util;
-            switch (pname) {
-            case GL_TEXTURE_WRAP_S:
-                samplerObj->SetWrapS(MG_Util::ConvertGLEnumToSamplerWrapMode(*(const GLint*)param));
-                break;
-            case GL_TEXTURE_WRAP_T:
-                samplerObj->SetWrapT(MG_Util::ConvertGLEnumToSamplerWrapMode(*(const GLint*)param));
-                break;
-            case GL_TEXTURE_WRAP_R:
-                samplerObj->SetWrapR(MG_Util::ConvertGLEnumToSamplerWrapMode(*(const GLint*)param));
-                break;
-            case GL_TEXTURE_MIN_FILTER:
-                samplerObj->SetMinFilter(MG_Util::ConvertGLEnumToSamplerFilterMode(*(const GLint*)param));
-                samplerObj->SetMipmapMode(MG_Util::ConvertGLEnumToSamplerMipmapMode(*(const GLint*)param));
-                break;
-            case GL_TEXTURE_MAG_FILTER:
-                samplerObj->SetMagFilter(MG_Util::ConvertGLEnumToSamplerFilterMode(*(const GLint*)param));
-                break;
-            case GL_TEXTURE_MIN_LOD:
-                samplerObj->SetLodRange(*(const GLfloat*)param, samplerObj->GetMaxLod());
-                break;
-            case GL_TEXTURE_MAX_LOD:
-                samplerObj->SetLodRange(samplerObj->GetMinLod(), *(const GLfloat*)param);
-                break;
-            case GL_TEXTURE_LOD_BIAS:
-                samplerObj->SetLodBias(*(const GLfloat*)param);
-                break;
-            case GL_TEXTURE_COMPARE_MODE:
-                samplerObj->SetCompareMode(MG_Util::ConvertGLEnumToSamplerCompareMode(*(const GLint*)param));
-                break;
-            case GL_TEXTURE_COMPARE_FUNC:
-                samplerObj->SetSamplerCompareFunc(MG_Util::ConvertGLEnumToSamplerCompareFunc(*(const GLint*)param));
-                break;
-            default:
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "SetSamplerParam_State",
-                                                                         "Invalid pname for sampler parameter"));
-            }
+            textureUnit.SetSamplerObject(MG_State::pGLContext->GetSamplerObject(sampler));
+        }
+    }
+
+    void BindSamplers_State(GLuint first, GLsizei count, const GLuint* samplers) {
+        if (count < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "BindSamplers", "count must be non-negative"));
+            return;
         }
 
-        void GetSamplerParam_State(GLuint sampler, GLenum pname, void* params, bool isFloat, bool isInteger) {
-            if (!SamplerImpl::ValidateSamplerName(sampler)) return;
-
-            auto samplerObj = MG_State::pGLContext->GetSamplerObject(sampler);
-            if (!samplerObj) {
-                samplerObj = MG_State::pGLContext->CreateSamplerObject(sampler); // for compatibility
-            }
-            if (!SamplerImpl::ValidateSamplerObject(sampler)) return;
-
-            using namespace MG_Util;
-            switch (pname) {
-            case GL_TEXTURE_WRAP_S:
-                *(GLint*)params = MG_Util::ConvertSamplerWrapModeToGLEnum(samplerObj->GetWrapS());
-                break;
-            case GL_TEXTURE_WRAP_T:
-                *(GLint*)params = MG_Util::ConvertSamplerWrapModeToGLEnum(samplerObj->GetWrapT());
-                break;
-            case GL_TEXTURE_WRAP_R:
-                *(GLint*)params = MG_Util::ConvertSamplerWrapModeToGLEnum(samplerObj->GetWrapR());
-                break;
-            case GL_TEXTURE_MIN_FILTER:
-                *(GLint*)params =
-                    MG_Util::ConvertSamplerFilterModeToGLEnum(samplerObj->GetMinFilter(), samplerObj->GetMipmapMode());
-                break;
-            case GL_TEXTURE_MAG_FILTER:
-                *(GLint*)params =
-                    MG_Util::ConvertSamplerFilterModeToGLEnum(samplerObj->GetMagFilter(), SamplerMipmapMode::None);
-                break;
-            case GL_TEXTURE_MIN_LOD:
-                *(GLfloat*)params = samplerObj->GetMinLod();
-                break;
-            case GL_TEXTURE_MAX_LOD:
-                *(GLfloat*)params = samplerObj->GetMaxLod();
-                break;
-            case GL_TEXTURE_LOD_BIAS:
-                *(GLfloat*)params = samplerObj->GetLodBias();
-                break;
-            case GL_TEXTURE_COMPARE_MODE:
-                *(GLint*)params = MG_Util::ConvertSamplerCompareModeToGLEnum(samplerObj->GetCompareMode());
-                break;
-            case GL_TEXTURE_COMPARE_FUNC:
-                *(GLint*)params = MG_Util::ConvertSamplerCompareFuncToGLEnum(samplerObj->GetSamplerCompareFunc());
-                break;
-            default:
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GetSamplerParam_State",
-                                                                         "Invalid pname for sampler parameter"));
-            }
+        for (GLsizei i = 0; i < count; ++i) {
+            BindSampler_State(first + i, samplers ? samplers[i] : 0);
         }
+    }
 
-        GLboolean IsSampler_State(GLuint sampler) {
-            return MG_State::pGLContext->ValidateSamplerObject(sampler) ? GL_TRUE : GL_FALSE;
-        }
+    /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
+    void GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint* params) {
+        GetSamplerParam_State(sampler, pname, params, false, false);
+    }
 
-        // migrate below functions without "_State" into this section
-        void GenSamplers_State(GLsizei count, GLuint* samplers) {
-            if (count < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GenSamplers", "count must be non-negative"));
-                return;
-            }
+    void SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint* param) {
+        SetSamplerParam_State(sampler, pname, param, false, true);
+    }
 
-            auto names = MG_State::pGLContext->GenSamplerNames(count);
-            for (GLsizei i = 0; i < count; ++i) {
-                samplers[i] = names[i];
-            }
-        }
+    void SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint* param) {
+        SetSamplerParam_State(sampler, pname, param, false, true);
+    }
 
-        void DeleteSamplers_State(GLsizei count, const GLuint* samplers) {
-            if (count < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteSamplers", "count must be non-negative"));
-                return;
-            }
+    void SamplerParameteriv(GLuint sampler, GLenum pname, const GLint* param) {
+        SetSamplerParam_State(sampler, pname, param, false, false);
+    }
 
-            for (GLsizei i = 0; i < count; ++i) {
-                if (samplers[i] != 0) {
-                    MG_State::pGLContext->MarkSamplerObjectForDeletion(samplers[i]);
-                }
-            }
-        }
+    void SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat* param) {
+        SetSamplerParam_State(sampler, pname, param, true, false);
+    }
 
-        void CreateSamplers_State(GLsizei n, GLuint* samplers) {
-            if (n < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GenSamplers", "count must be non-negative"));
-                return;
-            }
+    void SamplerParameteri(GLuint sampler, GLenum pname, GLint param) {
+        SamplerParameteriv(sampler, pname, &param);
+    }
 
-            auto names = MG_State::pGLContext->GenSamplerNames(n);
-            for (GLsizei i = 0; i < n; ++i) {
-                samplers[i] = names[i];
-                MG_State::pGLContext->CreateSamplerObject(names[i]);
-            }
-        }
+    void SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param) {
+        SamplerParameterfv(sampler, pname, &param);
+    }
 
-        void BindSampler_State(GLuint unit, GLuint sampler) {
-            if (unit >= MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "BindSampler", "texture unit out of range"));
-                return;
-            }
+    GLboolean IsSampler(GLuint sampler) {
+        return IsSampler_State(sampler);
+    }
 
-            auto& textureUnit = MG_State::pGLContext->GetTextureUnitObject(unit);
-            if (sampler == 0) {
-                textureUnit.SetSamplerObject(nullptr);
-            } else {
-                if (!SamplerImpl::ValidateSamplerName(sampler)) return;
-                auto samplerObject = MG_State::pGLContext->GetSamplerObject(sampler);
-                if (!samplerObject) {
-                    samplerObject = MG_State::pGLContext->CreateSamplerObject(sampler);
-                }
+    void GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint* params) {
+        GetSamplerParam_State(sampler, pname, params, false, true);
+    }
 
-                textureUnit.SetSamplerObject(MG_State::pGLContext->GetSamplerObject(sampler));
-            }
-        }
+    void GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint* params) {
+        GetSamplerParam_State(sampler, pname, params, false, true);
+    }
 
-        void BindSamplers_State(GLuint first, GLsizei count, const GLuint* samplers) {
-            if (count < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "BindSamplers", "count must be non-negative"));
-                return;
-            }
+    void GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat* params) {
+        GetSamplerParam_State(sampler, pname, params, true, false);
+    }
 
-            for (GLsizei i = 0; i < count; ++i) {
-                BindSampler_State(first + i, samplers ? samplers[i] : 0);
-            }
-        }
+    void GenSamplers(GLsizei count, GLuint* samplers) {
+        GenSamplers_State(count, samplers);
+    }
 
-        /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
-        void GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint* params) {
-            GetSamplerParam_State(sampler, pname, params, false, false);
-        }
+    void DeleteSamplers(GLsizei count, const GLuint* samplers) {
+        DeleteSamplers_State(count, samplers);
+    }
 
-        void SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint* param) {
-            SetSamplerParam_State(sampler, pname, param, false, true);
-        }
+    void CreateSamplers(GLsizei n, GLuint* samplers) {
+        CreateSamplers_State(n, samplers);
+    }
 
-        void SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint* param) {
-            SetSamplerParam_State(sampler, pname, param, false, true);
-        }
+    void BindSamplers(GLuint first, GLsizei count, const GLuint* samplers) {
+        BindSamplers_State(first, count, samplers);
+    }
 
-        void SamplerParameteriv(GLuint sampler, GLenum pname, const GLint* param) {
-            SetSamplerParam_State(sampler, pname, param, false, false);
-        }
-
-        void SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat* param) {
-            SetSamplerParam_State(sampler, pname, param, true, false);
-        }
-
-        void SamplerParameteri(GLuint sampler, GLenum pname, GLint param) {
-            SamplerParameteriv(sampler, pname, &param);
-        }
-
-        void SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param) {
-            SamplerParameterfv(sampler, pname, &param);
-        }
-
-        GLboolean IsSampler(GLuint sampler) {
-            return IsSampler_State(sampler);
-        }
-
-        void GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint* params) {
-            GetSamplerParam_State(sampler, pname, params, false, true);
-        }
-
-        void GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint* params) {
-            GetSamplerParam_State(sampler, pname, params, false, true);
-        }
-
-        void GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat* params) {
-            GetSamplerParam_State(sampler, pname, params, true, false);
-        }
-
-        void GenSamplers(GLsizei count, GLuint* samplers) {
-            GenSamplers_State(count, samplers);
-        }
-
-        void DeleteSamplers(GLsizei count, const GLuint* samplers) {
-            DeleteSamplers_State(count, samplers);
-        }
-
-        void CreateSamplers(GLsizei n, GLuint* samplers) {
-            CreateSamplers_State(n, samplers);
-        }
-
-        void BindSamplers(GLuint first, GLsizei count, const GLuint* samplers) {
-            BindSamplers_State(first, count, samplers);
-        }
-
-        void BindSampler(GLuint unit, GLuint sampler) {
-            BindSampler_State(unit, sampler);
-        }
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+    void BindSampler(GLuint unit, GLuint sampler) {
+        BindSampler_State(unit, sampler);
+    }
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Sampler/GL_Sampler.h

@@ -9,24 +9,22 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-        void GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint* params);
-        void SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint* param);
-        void SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint* param);
-        void SamplerParameteriv(GLuint sampler, GLenum pname, const GLint* param);
-        void SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat* param);
-        void SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
-        void SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
-        GLboolean IsSampler(GLuint sampler);
-        void GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint* params);
-        void GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint* params);
-        void GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat* params);
-        void GenSamplers(GLsizei count, GLuint* samplers);
-        void DeleteSamplers(GLsizei count, const GLuint* samplers);
-        void CreateSamplers(GLsizei n, GLuint* samplers);
-        void BindSamplers(GLuint first, GLsizei count, const GLuint* samplers);
-        void BindSampler(GLuint unit, GLuint sampler);
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl::GLImpl {
+    /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
+    void GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint* params);
+    void SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint* param);
+    void SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint* param);
+    void SamplerParameteriv(GLuint sampler, GLenum pname, const GLint* param);
+    void SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat* param);
+    void SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
+    void SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
+    GLboolean IsSampler(GLuint sampler);
+    void GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint* params);
+    void GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint* params);
+    void GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat* params);
+    void GenSamplers(GLsizei count, GLuint* samplers);
+    void DeleteSamplers(GLsizei count, const GLuint* samplers);
+    void CreateSamplers(GLsizei n, GLuint* samplers);
+    void BindSamplers(GLuint first, GLsizei count, const GLuint* samplers);
+    void BindSampler(GLuint unit, GLuint sampler);
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Sampler/Validators.cpp

@@ -11,126 +11,122 @@
 #include <MG_State/GLState/ErrorState/Error.h>
 #include <MG_Util/Converters/GLToMG/TextureEnumConverter.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace SamplerImpl {
-        Bool ValidateSamplerName(GLuint sampler) {
-            if (!MG_State::pGLContext->ValidateSamplerName(sampler)) {
+namespace MobileGL::MG_Impl::GLImpl::SamplerImpl {
+    Bool ValidateSamplerName(GLuint sampler) {
+        if (!MG_State::pGLContext->ValidateSamplerName(sampler)) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerName",
+                                                                      std::format("Invalid sampler name {}", sampler)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateSamplerObject(GLuint sampler) {
+        if (!MG_State::pGLContext->ValidateSamplerObject(sampler)) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerObject",
+                                             std::format("Sampler object {} does not exist", sampler)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateSamplerParam(GLenum pname, GLenum param) {
+        using namespace MG_Util;
+        switch (pname) {
+        case GL_TEXTURE_WRAP_S:
+        case GL_TEXTURE_WRAP_T:
+        case GL_TEXTURE_WRAP_R:
+            if (MG_Util::ConvertGLEnumToSamplerWrapMode(param) == SamplerWrapMode::Unknown) {
+                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                                  MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
+                                                                               "Invalid wrap mode parameter"));
+                return false;
+            }
+            break;
+
+        case GL_TEXTURE_MIN_FILTER:
+            if (MG_Util::ConvertGLEnumToSamplerFilterMode(param) == SamplerFilterMode::Unknown) {
+                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                                  MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
+                                                                               "Invalid min filter parameter"));
+                return false;
+            }
+            break;
+
+        case GL_TEXTURE_MAG_FILTER:
+            if (param != GL_NEAREST && param != GL_LINEAR) {
+                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                                  MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
+                                                                               "Invalid mag filter parameter"));
+                return false;
+            }
+            break;
+
+        case GL_TEXTURE_COMPARE_MODE:
+            if (param != GL_NONE && param != GL_COMPARE_REF_TO_TEXTURE) {
+                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                                  MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
+                                                                               "Invalid compare mode parameter"));
+                return false;
+            }
+            break;
+
+        case GL_TEXTURE_COMPARE_FUNC:
+            if (param < GL_LEQUAL || param > GL_ALWAYS) {
+                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                                  MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
+                                                                               "Invalid compare function parameter"));
+                return false;
+            }
+            break;
+
+        default:
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
+                                                                           "Invalid pname for sampler parameter"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateSamplerFloatParam(GLenum pname, GLfloat param) {
+        switch (pname) {
+        case GL_TEXTURE_MIN_LOD:
+        case GL_TEXTURE_MAX_LOD:
+        case GL_TEXTURE_LOD_BIAS:
+            return true;
+
+        case GL_TEXTURE_BORDER_COLOR:
+            if (param < 0.0f || param > 1.0f) {
+                MG_State::pGLContext->RecordError(
+                    ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerFloatParam",
+                                                                          "Border color component out of [0,1] range"));
+                return false;
+            }
+            return true;
+
+        default:
+            return ValidateSamplerParam(pname, static_cast<GLenum>(param));
+        }
+    }
+
+    Bool ValidateSamplerIntParam(GLenum pname, GLint param) {
+        switch (pname) {
+        case GL_TEXTURE_BORDER_COLOR:
+            if (param < 0 || param > 255) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerName",
-                                                 std::format("Invalid sampler name {}", sampler)));
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerIntParam",
+                                                 "Border color component out of [0,255] range"));
                 return false;
             }
             return true;
+
+        default:
+            return ValidateSamplerParam(pname, static_cast<GLenum>(param));
         }
-
-        Bool ValidateSamplerObject(GLuint sampler) {
-            if (!MG_State::pGLContext->ValidateSamplerObject(sampler)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerObject",
-                                                 std::format("Sampler object {} does not exist", sampler)));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateSamplerParam(GLenum pname, GLenum param) {
-            using namespace MG_Util;
-            switch (pname) {
-            case GL_TEXTURE_WRAP_S:
-            case GL_TEXTURE_WRAP_T:
-            case GL_TEXTURE_WRAP_R:
-                if (MG_Util::ConvertGLEnumToSamplerWrapMode(param) == SamplerWrapMode::Unknown) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
-                                                                             "Invalid wrap mode parameter"));
-                    return false;
-                }
-                break;
-
-            case GL_TEXTURE_MIN_FILTER:
-                if (MG_Util::ConvertGLEnumToSamplerFilterMode(param) == SamplerFilterMode::Unknown) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
-                                                                             "Invalid min filter parameter"));
-                    return false;
-                }
-                break;
-
-            case GL_TEXTURE_MAG_FILTER:
-                if (param != GL_NEAREST && param != GL_LINEAR) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
-                                                                             "Invalid mag filter parameter"));
-                    return false;
-                }
-                break;
-
-            case GL_TEXTURE_COMPARE_MODE:
-                if (param != GL_NONE && param != GL_COMPARE_REF_TO_TEXTURE) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
-                                                                             "Invalid compare mode parameter"));
-                    return false;
-                }
-                break;
-
-            case GL_TEXTURE_COMPARE_FUNC:
-                if (param < GL_LEQUAL || param > GL_ALWAYS) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
-                                                                             "Invalid compare function parameter"));
-                    return false;
-                }
-                break;
-
-            default:
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerParam",
-                                                                               "Invalid pname for sampler parameter"));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateSamplerFloatParam(GLenum pname, GLfloat param) {
-            switch (pname) {
-            case GL_TEXTURE_MIN_LOD:
-            case GL_TEXTURE_MAX_LOD:
-            case GL_TEXTURE_LOD_BIAS:
-                return true;
-
-            case GL_TEXTURE_BORDER_COLOR:
-                if (param < 0.0f || param > 1.0f) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidValue,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerFloatParam",
-                                                     "Border color component out of [0,1] range"));
-                    return false;
-                }
-                return true;
-
-            default:
-                return ValidateSamplerParam(pname, static_cast<GLenum>(param));
-            }
-        }
-
-        Bool ValidateSamplerIntParam(GLenum pname, GLint param) {
-            switch (pname) {
-            case GL_TEXTURE_BORDER_COLOR:
-                if (param < 0 || param > 255) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidValue,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateSamplerIntParam",
-                                                     "Border color component out of [0,255] range"));
-                    return false;
-                }
-                return true;
-
-            default:
-                return ValidateSamplerParam(pname, static_cast<GLenum>(param));
-            }
-        }
-    } // namespace SamplerImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+    }
+} // namespace MobileGL::MG_Impl::GLImpl::SamplerImpl

MobileGL/MG_Impl/GLImpl/Sampler/Validators.h

@@ -10,12 +10,10 @@
 #include <Includes.h>
 #include <MG_State/GLState/SamplerState/SamplerObject.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace SamplerImpl {
-        Bool ValidateSamplerName(GLuint sampler);
-        Bool ValidateSamplerObject(GLuint sampler);
-        Bool ValidateSamplerParam(GLenum pname, GLenum param);
-        Bool ValidateSamplerFloatParam(GLenum pname, GLfloat param);
-        Bool ValidateSamplerIntParam(GLenum pname, GLint param);
-    } // namespace SamplerImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+namespace MobileGL::MG_Impl::GLImpl::SamplerImpl {
+    Bool ValidateSamplerName(GLuint sampler);
+    Bool ValidateSamplerObject(GLuint sampler);
+    Bool ValidateSamplerParam(GLenum pname, GLenum param);
+    Bool ValidateSamplerFloatParam(GLenum pname, GLfloat param);
+    Bool ValidateSamplerIntParam(GLenum pname, GLint param);
+} // namespace MobileGL::MG_Impl::GLImpl::SamplerImpl

MobileGL/MG_Impl/GLImpl/Sync/GL_Sync.cpp

@@ -10,36 +10,34 @@
 
 #include "MG_State/GLState/Core.h"
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        GLsync FenceSync_Backend(GLenum condition, GLbitfield flags) {
-            return 0;
-        }
+namespace MobileGL::MG_Impl::GLImpl {
+    GLsync FenceSync_Backend(GLenum condition, GLbitfield flags) {
+        return 0;
+    }
 
-        GLenum ClientWaitSync_Backend(GLsync sync, GLbitfield flags, GLuint64 timeout) {
-            return 0;
-        }
+    GLenum ClientWaitSync_Backend(GLsync sync, GLbitfield flags, GLuint64 timeout) {
+        return 0;
+    }
 
-        void DeleteSync_Backend(GLsync sync) {}
+    void DeleteSync_Backend(GLsync sync) {}
 
-        GLsync FenceSync_State(GLenum condition, GLbitfield flags) {
-            return 0;
-        }
+    GLsync FenceSync_State(GLenum condition, GLbitfield flags) {
+        return 0;
+    }
 
-        GLenum ClientWaitSync_State(GLsync sync, GLbitfield flags, GLuint64 timeout) {
-            return 0;
-        }
+    GLenum ClientWaitSync_State(GLsync sync, GLbitfield flags, GLuint64 timeout) {
+        return 0;
+    }
 
-        void DeleteSync_State(GLsync sync) {}
+    void DeleteSync_State(GLsync sync) {}
 
-        GLsync FenceSync(GLenum condition, GLbitfield flags) {
-            return 0;
-        }
+    GLsync FenceSync(GLenum condition, GLbitfield flags) {
+        return 0;
+    }
 
-        GLenum ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) {
-            return 0;
-        }
+    GLenum ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) {
+        return 0;
+    }
 
-        void DeleteSync(GLsync sync) {}
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+    void DeleteSync(GLsync sync) {}
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Sync/GL_Sync.h

@@ -9,10 +9,8 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        GLsync FenceSync(GLenum condition, GLbitfield flags);
-        GLenum ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout);
-        void DeleteSync(GLsync sync);
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl::GLImpl {
+    GLsync FenceSync(GLenum condition, GLbitfield flags);
+    GLenum ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout);
+    void DeleteSync(GLsync sync);
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/Texture/ProxyTexture.cpp

@@ -7,48 +7,47 @@
 // End of Source File Header
 
 #include "ProxyTexture.h"
-#include "MG_State/GLState/TextureState/TextureObject2D.h"
-#include "MG_Util/Types.h"
+#include <MG_State/GLState/TextureState/TextureObject2D.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace TextureImpl {
-        ProxyTextureManager* pProxyTextureManager;
+namespace MobileGL::MG_Impl::GLImpl::TextureImpl {
+    UniquePtr<ProxyTextureManager> pProxyTextureManager;
 
-        Bool IsProxyTextureTarget(TextureUploadTarget target) {
-            switch (target) {
-            case TextureUploadTarget::ProxyCubeMap:
-            case TextureUploadTarget::ProxyTexture1DArray:
-            case TextureUploadTarget::ProxyTexture2DArray:
-            case TextureUploadTarget::ProxyTexture1D:
-            case TextureUploadTarget::ProxyTexture2D:
-            case TextureUploadTarget::ProxyTexture3D:
-            case TextureUploadTarget::ProxyTexture2DMultisample:
-            case TextureUploadTarget::ProxyTexture2DMultisampleArray:
-            case TextureUploadTarget::ProxyTextureRectangle:
-            case TextureUploadTarget::ProxyCubeMapArray:
-                return true;
-            default:
-                return false;
-            }
+    Bool IsProxyTextureTarget(TextureUploadTarget target) {
+        switch (target) {
+        case TextureUploadTarget::ProxyCubeMap:
+        case TextureUploadTarget::ProxyTexture1DArray:
+        case TextureUploadTarget::ProxyTexture2DArray:
+        case TextureUploadTarget::ProxyTexture1D:
+        case TextureUploadTarget::ProxyTexture2D:
+        case TextureUploadTarget::ProxyTexture3D:
+        case TextureUploadTarget::ProxyTexture2DMultisample:
+        case TextureUploadTarget::ProxyTexture2DMultisampleArray:
+        case TextureUploadTarget::ProxyTextureRectangle:
+        case TextureUploadTarget::ProxyCubeMapArray:
+            return true;
+        default:
+            return false;
         }
+    }
 
-        SharedPtr<MG_State::GLState::ITextureObject> ProxyTextureManager::CreateOrReplaceProxyTextureObject(
-            TextureUploadTarget target) {
-            auto it = m_proxyTexturesMap.find(target);
-            if (it != m_proxyTexturesMap.end()) {
-                m_proxyTexturesMap.erase(it);
-            }
-            m_proxyTexturesMap[target] = MakeShared<MG_State::GLState::TextureObject2D>(0);
-            return m_proxyTexturesMap[target];
+    const SharedPtr<MG_State::GLState::ITextureObject>& ProxyTextureManager::CreateOrReplaceProxyTextureObject(
+        TextureUploadTarget target) {
+        auto it = m_proxyTexturesMap.find(target);
+        if (it != m_proxyTexturesMap.end()) {
+            m_proxyTexturesMap.erase(it);
         }
+        auto& obj = m_proxyTexturesMap[target];
+        obj = MakeShared<MG_State::GLState::TextureObject2D>(0);
+        return obj;
+    }
 
-        SharedPtr<MG_State::GLState::ITextureObject> ProxyTextureManager::GetProxyTextureObject(
-            TextureUploadTarget target) {
-            auto it = m_proxyTexturesMap.find(target);
-            if (it != m_proxyTexturesMap.end()) {
-                return it->second;
-            }
-            return nullptr;
+    const SharedPtr<MG_State::GLState::ITextureObject>& ProxyTextureManager::GetProxyTextureObject(
+        TextureUploadTarget target) {
+        auto it = m_proxyTexturesMap.find(target);
+        if (it != m_proxyTexturesMap.end()) {
+            return it->second;
         }
-    } // namespace TextureImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+        static SharedPtr<MG_State::GLState::ITextureObject> nullTextureObject = nullptr;
+        return nullTextureObject;
+    }
+} // namespace MobileGL::MG_Impl::GLImpl::TextureImpl

MobileGL/MG_Impl/GLImpl/Texture/ProxyTexture.h

@@ -10,19 +10,18 @@
 #include <Includes.h>
 #include <MG_State/GLState/Core.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace TextureImpl {
-        Bool IsProxyTextureTarget(TextureUploadTarget target);
+namespace MobileGL::MG_Impl::GLImpl::TextureImpl {
+    Bool IsProxyTextureTarget(TextureUploadTarget target);
 
-        class ProxyTextureManager {
-        public:
-            SharedPtr<MG_State::GLState::ITextureObject> CreateOrReplaceProxyTextureObject(TextureUploadTarget target);
-            SharedPtr<MG_State::GLState::ITextureObject> GetProxyTextureObject(TextureUploadTarget target);
+    class ProxyTextureManager {
+    public:
+        const SharedPtr<MG_State::GLState::ITextureObject>& CreateOrReplaceProxyTextureObject(
+            TextureUploadTarget target);
+        const SharedPtr<MG_State::GLState::ITextureObject>& GetProxyTextureObject(TextureUploadTarget target);
 
-        private:
-            UnorderedMap<TextureUploadTarget, SharedPtr<MG_State::GLState::ITextureObject>> m_proxyTexturesMap;
-        };
+    private:
+        UnorderedMap<TextureUploadTarget, SharedPtr<MG_State::GLState::ITextureObject>> m_proxyTexturesMap;
+    };
 
-        extern ProxyTextureManager* pProxyTextureManager;
-    } // namespace TextureImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+    extern UniquePtr<ProxyTextureManager> pProxyTextureManager;
+} // namespace MobileGL::MG_Impl::GLImpl::TextureImpl

MobileGL/MG_Impl/GLImpl/Texture/Validators.cpp

@@ -15,309 +15,295 @@
 #include <MG_Util/Converters/MGToMG/TextureEnumConverter.h>
 #include <MG_Util/Converters/MGToStr/TextureEnumConverter.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace TextureImpl {
-        Bool ValidateTextureTarget(TextureTarget target) {
-            if (target == TextureTarget::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureTarget", "Invalid texture target"));
-                return false;
-            }
-            return true;
+namespace MobileGL::MG_Impl::GLImpl::TextureImpl {
+    Bool ValidateTextureTarget(TextureTarget target) {
+        if (target == TextureTarget::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureTarget", "Invalid texture target"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureUploadTarget(TextureUploadTarget textureUploadTarget) {
+        if (textureUploadTarget == TextureUploadTarget::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureUploadTarget",
+                                                                     "Invalid texture upload target"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureName(Uint texture, Bool allowZero) {
+        if (texture == 0) {
+            if (allowZero) return true;
+
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureName", "Texture name cannot be zero"));
+            return false;
         }
 
-        Bool ValidateTextureUploadTarget(TextureUploadTarget textureUploadTarget) {
-            if (textureUploadTarget == TextureUploadTarget::Unknown) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "ValidateTextureUploadTarget",
-                                                                               "Invalid texture upload target"));
-                return false;
-            }
-            return true;
+        if (!MG_State::pGLContext->ValidateTextureName(texture)) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureName", "Invalid texture name"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureInputFormat(TextureInputFormat format) {
+        if (format == TextureInputFormat::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInputFormat",
+                                                                     "Invalid texture input format"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTexturePixelDataType(TexturePixelDataType texturePixelDataType) {
+        if (texturePixelDataType == TexturePixelDataType::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTexturePixelDataType",
+                                                                     "Invalid texture pixel data type"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureLevelNumber(GLint level) {
+        if (level < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureLevelNumber",
+                                                                      "Texture level must be non-negative"));
+            return false;
         }
 
-        Bool ValidateTextureName(Uint texture, Bool allowZero) {
-            if (texture == 0) {
-                if (allowZero) return true;
+        // TODO: GL_INVALID_VALUE may be generated if level is greater than log2(max), where max is the returned
+        // value of GL_MAX_TEXTURE_SIZE.
 
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureName",
-                                                                               "Texture name cannot be zero"));
-                return false;
-            }
+        return true;
+    }
 
-            if (!MG_State::pGLContext->ValidateTextureName(texture)) {
+    Bool ValidateTextureSizeWithTextureUploadTarget(TextureUploadTarget target, GLsizei width, GLsizei height) {
+        if (target == TextureUploadTarget::CubeMapPositiveX || target == TextureUploadTarget::CubeMapNegativeX ||
+            target == TextureUploadTarget::CubeMapPositiveY || target == TextureUploadTarget::CubeMapNegativeY ||
+            target == TextureUploadTarget::CubeMapPositiveZ || target == TextureUploadTarget::CubeMapNegativeZ) {
+            if (width != height) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureName", "Invalid texture name"));
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeWithTarget",
+                                                 "Width and height must be equal for cube map textures"));
                 return false;
             }
-            return true;
         }
 
-        Bool ValidateTextureInputFormat(TextureInputFormat format) {
-            if (format == TextureInputFormat::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInputFormat",
-                                                                         "Invalid texture input format"));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateTexturePixelDataType(TexturePixelDataType texturePixelDataType) {
-            if (texturePixelDataType == TexturePixelDataType::Unknown) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidEnum,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "ValidateTexturePixelDataType",
-                                                                               "Invalid texture pixel data type"));
-                return false;
-            }
-            return true;
-        }
-
-        Bool ValidateTextureLevelNumber(GLint level) {
-            if (level < 0) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "ValidateTextureLevelNumber",
-                                                                               "Texture level must be non-negative"));
-                return false;
-            }
-
-            // TODO: GL_INVALID_VALUE may be generated if level is greater than log2(max), where max is the returned
-            // value of GL_MAX_TEXTURE_SIZE.
-
-            return true;
-        }
-
-        Bool ValidateTextureSizeWithTextureUploadTarget(TextureUploadTarget target, GLsizei width, GLsizei height) {
-            if (target == TextureUploadTarget::CubeMapPositiveX || target == TextureUploadTarget::CubeMapNegativeX ||
-                target == TextureUploadTarget::CubeMapPositiveY || target == TextureUploadTarget::CubeMapNegativeY ||
-                target == TextureUploadTarget::CubeMapPositiveZ || target == TextureUploadTarget::CubeMapNegativeZ) {
-                if (width != height) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidValue,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeWithTarget",
-                                                     "Width and height must be equal for cube map textures"));
-                    return false;
-                }
-            }
-
-            if (!(target == TextureUploadTarget::Texture1DArray ||
-                  target == TextureUploadTarget::ProxyTexture1DArray)) {
-                if (height < 0) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidValue,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeWithTarget",
-                                                     "Height must be greater than or equal to zero"));
-                    return false;
-                }
-                // TODO: GL_INVALID_VALUE is generated if target is not GL_TEXTURE_1D_ARRAY or GL_PROXY_TEXTURE_1D_ARRAY
-                // and height is greater than GL_MAX_TEXTURE_SIZE.
-            }
-
-            if (target == TextureUploadTarget::Texture1DArray || target == TextureUploadTarget::ProxyTexture1DArray) {
-                if (height < 0) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidValue,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeWithTarget",
-                                                     "Height must be greater than or equal to zero"));
-                    return false;
-                }
-                // TODO: GL_INVALID_VALUE is generated if target is GL_TEXTURE_1D_ARRAY or GL_PROXY_TEXTURE_1D_ARRAY and
-                // height is greater than GL_MAX_ARRAY_TEXTURE_LAYERS.
-            }
-
-            return true;
-        }
-
-        Bool ValidateTextureSizeRange(SizeT width, SizeT height, SizeT depth) {
-            if (width < 0 || height < 0 || depth < 0) {
+        if (!(target == TextureUploadTarget::Texture1DArray || target == TextureUploadTarget::ProxyTexture1DArray)) {
+            if (height < 0) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeRange",
-                                                 "Width and height must be greater than zero"));
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeWithTarget",
+                                                 "Height must be greater than or equal to zero"));
                 return false;
             }
-
-            // TODO: GL_INVALID_VALUE is generated if width is greater than GL_MAX_TEXTURE_SIZE.
-
-            return true;
+            // TODO: GL_INVALID_VALUE is generated if target is not GL_TEXTURE_1D_ARRAY or GL_PROXY_TEXTURE_1D_ARRAY
+            // and height is greater than GL_MAX_TEXTURE_SIZE.
         }
 
-        Bool ValidateTextureInternalFormat(TextureInternalFormat format) {
-            if (format == TextureInternalFormat::Unknown) {
+        if (target == TextureUploadTarget::Texture1DArray || target == TextureUploadTarget::ProxyTexture1DArray) {
+            if (height < 0) {
                 MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormat",
-                                                 "Invalid texture sized internal format"));
+                    ErrorCode::InvalidValue,
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeWithTarget",
+                                                 "Height must be greater than or equal to zero"));
                 return false;
             }
-            return true;
+            // TODO: GL_INVALID_VALUE is generated if target is GL_TEXTURE_1D_ARRAY or GL_PROXY_TEXTURE_1D_ARRAY and
+            // height is greater than GL_MAX_ARRAY_TEXTURE_LAYERS.
         }
 
-        Bool ValidateTextureBorderNumber(Int border) {
-            if (border != 0) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "ValidateTextureBorderNumber",
-                                                                               "Border must be zero"));
-                return false;
-            }
-            return true;
+        return true;
+    }
+
+    Bool ValidateTextureSizeRange(SizeT width, SizeT height, SizeT depth) {
+        if (width < 0 || height < 0 || depth < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSizeRange",
+                                                                      "Width and height must be greater than zero"));
+            return false;
         }
 
-        Bool ValidateTextureInternalFormatCompatibleWithInput(TextureInputFormat format,
-                                                              TextureInternalFormat internalFormat,
-                                                              TexturePixelDataType type) {
-            if (type == TexturePixelDataType::UnsignedByte332 || type == TexturePixelDataType::UnsignedByte233Rev ||
-                type == TexturePixelDataType::UnsignedShort565 || type == TexturePixelDataType::UnsignedShort565Rev ||
-                type == TexturePixelDataType::UnsignedInt101111Rev) {
-                if (format != TextureInputFormat::RGB) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidOperation,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                     "ValidateTextureInternalFormatCompatibleWithInput",
-                                                     "Invalid format for the given type"));
-                    return false;
-                }
-            }
+        // TODO: GL_INVALID_VALUE is generated if width is greater than GL_MAX_TEXTURE_SIZE.
 
-            if (type == TexturePixelDataType::UnsignedShort4444 || type == TexturePixelDataType::UnsignedShort4444Rev ||
-                type == TexturePixelDataType::UnsignedShort5551 || type == TexturePixelDataType::UnsignedShort1555Rev ||
-                type == TexturePixelDataType::UnsignedInt8888 || type == TexturePixelDataType::UnsignedInt8888Rev ||
-                type == TexturePixelDataType::UnsignedInt1010102 ||
-                type == TexturePixelDataType::UnsignedInt2101010Rev ||
-                type == TexturePixelDataType::UnsignedInt5999Rev) {
-                if (format != TextureInputFormat::RGBA && format != TextureInputFormat::BGRA) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidOperation,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                     "ValidateTextureInternalFormatCompatibleWithInput",
-                                                     "Invalid format for the given type"));
-                    return false;
-                }
-            }
+        return true;
+    }
 
-            if (internalFormat == TextureInternalFormat::DepthComponent ||
-                internalFormat == TextureInternalFormat::DepthComponent16 ||
-                internalFormat == TextureInternalFormat::DepthComponent24 ||
-                internalFormat == TextureInternalFormat::DepthComponent32F) {
-                if (format != TextureInputFormat::DepthComponent) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidOperation,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                     "ValidateTextureInternalFormatCompatibleWithInput",
-                                                     "Invalid format for depth component internal format"));
-                    return false;
-                }
-            }
+    Bool ValidateTextureInternalFormat(TextureInternalFormat format) {
+        if (format == TextureInternalFormat::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormat",
+                                                                     "Invalid texture sized internal format"));
+            return false;
+        }
+        return true;
+    }
 
-            if (format == TextureInputFormat::DepthComponent &&
-                (internalFormat != TextureInternalFormat::DepthComponent &&
-                 internalFormat != TextureInternalFormat::DepthComponent16 &&
-                 internalFormat != TextureInternalFormat::DepthComponent24 &&
-                 internalFormat != TextureInternalFormat::DepthComponent32F &&
-                 internalFormat != TextureInternalFormat::DepthComponent32 // workaround for Minecraft 1.21.5+
-                 )) {
+    Bool ValidateTextureBorderNumber(Int border) {
+        if (border != 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureBorderNumber", "Border must be zero"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureInternalFormatCompatibleWithInput(TextureInputFormat format,
+                                                          TextureInternalFormat internalFormat,
+                                                          TexturePixelDataType type) {
+        if (type == TexturePixelDataType::UnsignedByte332 || type == TexturePixelDataType::UnsignedByte233Rev ||
+            type == TexturePixelDataType::UnsignedShort565 || type == TexturePixelDataType::UnsignedShort565Rev ||
+            type == TexturePixelDataType::UnsignedInt101111Rev) {
+            if (format != TextureInputFormat::RGB) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormatCompatibleWithInput",
-                                                 "Invalid internal format for depth component format"));
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormatCompatibleWithInput",
+                                                 "Invalid format for the given type"));
                 return false;
             }
-            return true;
         }
 
-        Bool ValidateTextureLevelWithUploadTarget(TextureUploadTarget target, Int level) {
-            if (target == TextureUploadTarget::TextureRectangle ||
-                target == TextureUploadTarget::ProxyTextureRectangle) {
-                if (level != 0) {
-                    MG_State::pGLContext->RecordError(
-                        ErrorCode::InvalidValue,
-                        MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureLevelWithUploadTarget",
-                                                     "Level must be zero for rectangle textures"));
-                    return false;
-                }
-            }
-            return true;
-        }
-
-        Bool ValidateTextureObject(SharedPtr<MG_State::GLState::ITextureObject> textureObject) {
-            if (!textureObject) {
+        if (type == TexturePixelDataType::UnsignedShort4444 || type == TexturePixelDataType::UnsignedShort4444Rev ||
+            type == TexturePixelDataType::UnsignedShort5551 || type == TexturePixelDataType::UnsignedShort1555Rev ||
+            type == TexturePixelDataType::UnsignedInt8888 || type == TexturePixelDataType::UnsignedInt8888Rev ||
+            type == TexturePixelDataType::UnsignedInt1010102 || type == TexturePixelDataType::UnsignedInt2101010Rev ||
+            type == TexturePixelDataType::UnsignedInt5999Rev) {
+            if (format != TextureInputFormat::RGBA && format != TextureInputFormat::BGRA) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureObject", "Texture object is null"));
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormatCompatibleWithInput",
+                                                 "Invalid format for the given type"));
                 return false;
             }
-            return true;
         }
 
-        Bool ValidateTextureTargetUniformity(SharedPtr<MG_State::GLState::ITextureObject> textureObject,
-                                             TextureTarget target) {
-            if (!textureObject) return true; // should be created later
-            TextureTarget prevTarget = textureObject->GetTarget();
-            if (prevTarget != target) {
+        if (internalFormat == TextureInternalFormat::DepthComponent ||
+            internalFormat == TextureInternalFormat::DepthComponent16 ||
+            internalFormat == TextureInternalFormat::DepthComponent24 ||
+            internalFormat == TextureInternalFormat::DepthComponent32F) {
+            if (format != TextureInputFormat::DepthComponent) {
                 MG_State::pGLContext->RecordError(
                     ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureTargetUniformity",
-                                                 "Texture target does not match the previously created texture"));
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormatCompatibleWithInput",
+                                                 "Invalid format for depth component internal format"));
                 return false;
             }
-            return true;
         }
 
-        Bool ValidateTextureSubImageOffsets(SharedPtr<MG_State::GLState::ITextureObject> textureObject, Int xoffset,
-                                            Int width, Int yoffset, Int height, Int zoffset, Int depth) {
-            auto baseSize = textureObject->GetBaseSize();
-            if (xoffset < 0 || (xoffset + width) > baseSize.x()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSubImageOffsets",
-                                                 "xoffset must be non-negative and (xoffset + width) must not exceed "
-                                                 "the texture width."));
-                return false;
-            }
-            if (baseSize.y() == 0) return true;
-
-            if (yoffset < 0 || (yoffset + height) > baseSize.y()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSubImageOffsets",
-                                                 "yoffset must be non-negative and (yoffset + height) must not exceed "
-                                                 "the texture height."));
-                return false;
-            }
-            if (baseSize.z() == 0) return true;
-
-            if (zoffset < 0 || (zoffset + depth) > baseSize.z()) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSubImageOffsets",
-                                                 "zoffset must be non-negative and (zoffset + depth) must not exceed "
-                                                 "the texture depth."));
-                return false;
-            }
-            return true;
+        if (format == TextureInputFormat::DepthComponent &&
+            (internalFormat != TextureInternalFormat::DepthComponent &&
+             internalFormat != TextureInternalFormat::DepthComponent16 &&
+             internalFormat != TextureInternalFormat::DepthComponent24 &&
+             internalFormat != TextureInternalFormat::DepthComponent32F &&
+             internalFormat != TextureInternalFormat::DepthComponent32 // workaround for Minecraft 1.21.5+
+             )) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureInternalFormatCompatibleWithInput",
+                                             "Invalid internal format for depth component format"));
+            return false;
         }
+        return true;
+    }
 
-        Bool ValidateBaseInternalFormatMatch(TextureInternalFormat format1, TextureInternalFormat format2) {
-            auto unsizedFormat1 = MG_Util::ConvertInternalFormatToUnsized(format1);
-            auto unsizedFormat2 = MG_Util::ConvertInternalFormatToUnsized(format2);
-            if (unsizedFormat1 != unsizedFormat2) {
+    Bool ValidateTextureLevelWithUploadTarget(TextureUploadTarget target, Int level) {
+        if (target == TextureUploadTarget::TextureRectangle || target == TextureUploadTarget::ProxyTextureRectangle) {
+            if (level != 0) {
                 MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>(
-                        std::format("MG_Impl/GLImpl", "ValidateBaseInternalFormatMatch",
-                                    "The base internal format of the two formats do not match ({} vs. {})",
-                                    MG_Util::ConvertTextureInternalFormatToString(unsizedFormat1).c_str(),
-                                    MG_Util::ConvertTextureInternalFormatToString(unsizedFormat2).c_str())));
+                    ErrorCode::InvalidValue,
+                    MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureLevelWithUploadTarget",
+                                                 "Level must be zero for rectangle textures"));
                 return false;
             }
-            return true;
-        } // namespace TextureImpl
+        }
+        return true;
+    }
+
+    Bool ValidateTextureObject(SharedPtr<MG_State::GLState::ITextureObject> textureObject) {
+        if (!textureObject) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureObject", "Texture object is null"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureTargetUniformity(SharedPtr<MG_State::GLState::ITextureObject> textureObject,
+                                         TextureTarget target) {
+        if (!textureObject) return true; // should be created later
+        TextureTarget prevTarget = textureObject->GetTarget();
+        if (prevTarget != target) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureTargetUniformity",
+                                             "Texture target does not match the previously created texture"));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateTextureSubImageOffsets(SharedPtr<MG_State::GLState::ITextureObject> textureObject, Int xoffset,
+                                        Int width, Int yoffset, Int height, Int zoffset, Int depth) {
+        auto baseSize = textureObject->GetBaseSize();
+        if (xoffset < 0 || (xoffset + width) > baseSize.x()) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSubImageOffsets",
+                                             "xoffset must be non-negative and (xoffset + width) must not exceed "
+                                             "the texture width."));
+            return false;
+        }
+        if (baseSize.y() == 0) return true;
+
+        if (yoffset < 0 || (yoffset + height) > baseSize.y()) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSubImageOffsets",
+                                             "yoffset must be non-negative and (yoffset + height) must not exceed "
+                                             "the texture height."));
+            return false;
+        }
+        if (baseSize.z() == 0) return true;
+
+        if (zoffset < 0 || (zoffset + depth) > baseSize.z()) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateTextureSubImageOffsets",
+                                             "zoffset must be non-negative and (zoffset + depth) must not exceed "
+                                             "the texture depth."));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateBaseInternalFormatMatch(TextureInternalFormat format1, TextureInternalFormat format2) {
+        auto unsizedFormat1 = MG_Util::ConvertInternalFormatToUnsized(format1);
+        auto unsizedFormat2 = MG_Util::ConvertInternalFormatToUnsized(format2);
+        if (unsizedFormat1 != unsizedFormat2) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>(
+                    std::format("MG_Impl/GLImpl", "ValidateBaseInternalFormatMatch",
+                                "The base internal format of the two formats do not match ({} vs. {})",
+                                MG_Util::ConvertTextureInternalFormatToString(unsizedFormat1).c_str(),
+                                MG_Util::ConvertTextureInternalFormatToString(unsizedFormat2).c_str())));
+            return false;
+        }
+        return true;
     } // namespace TextureImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+} // namespace MobileGL::MG_Impl::GLImpl::TextureImpl

MobileGL/MG_Impl/GLImpl/Texture/Validators.h

@@ -12,27 +12,25 @@
 #include <Includes.h>
 #include <MG_State/GLState/TextureState/TextureObject.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace TextureImpl {
-        Bool ValidateTextureTarget(TextureTarget target);
-        Bool ValidateTextureUploadTarget(TextureUploadTarget textureUploadTarget);
-        Bool ValidateTextureName(Uint texture, Bool allowZero = false);
-        Bool ValidateTextureInputFormat(TextureInputFormat format);
-        Bool ValidateTexturePixelDataType(TexturePixelDataType texturePixelDataType);
-        Bool ValidateTextureLevelNumber(Int level);
-        Bool ValidateTextureSizeWithTextureUploadTarget(TextureUploadTarget target, GLsizei width, GLsizei height);
-        Bool ValidateTextureSizeRange(SizeT width, SizeT height, SizeT depth);
-        Bool ValidateTextureInternalFormat(TextureInternalFormat format);
-        Bool ValidateTextureBorderNumber(Int border);
-        Bool ValidateTextureInternalFormatCompatibleWithInput(TextureInputFormat format,
-                                                              TextureInternalFormat internalFormat,
-                                                              TexturePixelDataType type);
-        Bool ValidateTextureLevelWithUploadTarget(TextureUploadTarget target, Int level);
-        Bool ValidateTextureObject(SharedPtr<MG_State::GLState::ITextureObject> textureObject);
-        Bool ValidateTextureTargetUniformity(SharedPtr<MG_State::GLState::ITextureObject> textureObject,
-                                             TextureTarget target);
-        Bool ValidateTextureSubImageOffsets(SharedPtr<MG_State::GLState::ITextureObject> textureObject, Int xoffset,
-                                            Int width, Int yoffset = 0, Int height = 0, Int zoffset = 0, Int depth = 0);
-        Bool ValidateBaseInternalFormatMatch(TextureInternalFormat format1, TextureInternalFormat format2);
-    } // namespace TextureImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+namespace MobileGL::MG_Impl::GLImpl::TextureImpl {
+    Bool ValidateTextureTarget(TextureTarget target);
+    Bool ValidateTextureUploadTarget(TextureUploadTarget textureUploadTarget);
+    Bool ValidateTextureName(Uint texture, Bool allowZero = false);
+    Bool ValidateTextureInputFormat(TextureInputFormat format);
+    Bool ValidateTexturePixelDataType(TexturePixelDataType texturePixelDataType);
+    Bool ValidateTextureLevelNumber(Int level);
+    Bool ValidateTextureSizeWithTextureUploadTarget(TextureUploadTarget target, GLsizei width, GLsizei height);
+    Bool ValidateTextureSizeRange(SizeT width, SizeT height, SizeT depth);
+    Bool ValidateTextureInternalFormat(TextureInternalFormat format);
+    Bool ValidateTextureBorderNumber(Int border);
+    Bool ValidateTextureInternalFormatCompatibleWithInput(TextureInputFormat format,
+                                                          TextureInternalFormat internalFormat,
+                                                          TexturePixelDataType type);
+    Bool ValidateTextureLevelWithUploadTarget(TextureUploadTarget target, Int level);
+    Bool ValidateTextureObject(SharedPtr<MG_State::GLState::ITextureObject> textureObject);
+    Bool ValidateTextureTargetUniformity(SharedPtr<MG_State::GLState::ITextureObject> textureObject,
+                                         TextureTarget target);
+    Bool ValidateTextureSubImageOffsets(SharedPtr<MG_State::GLState::ITextureObject> textureObject, Int xoffset,
+                                        Int width, Int yoffset = 0, Int height = 0, Int zoffset = 0, Int depth = 0);
+    Bool ValidateBaseInternalFormatMatch(TextureInternalFormat format1, TextureInternalFormat format2);
+} // namespace MobileGL::MG_Impl::GLImpl::TextureImpl

MobileGL/MG_Impl/GLImpl/VertexArray/GL_VertexArray.cpp

@@ -12,222 +12,216 @@
 #include <MG_State/GLState/ErrorState/Error.h>
 #include <MG_Util/Converters/GLToMG/DataTypeConverter.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        void DisableVertexAttribArray_State(GLuint index) {
-            if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
+namespace MobileGL::MG_Impl::GLImpl {
+    void DisableVertexAttribArray_State(GLuint index) {
+        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
 
-            auto vao = MG_State::pGLContext->GetBoundVertexArray();
-            if (!vao) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "EnableVertexAttribArray_State",
-                                                                               "No vertex array object is bound."));
-                return;
-            }
-
-            vao->DisableAttribute(index);
+        auto& vao = MG_State::pGLContext->GetBoundVertexArray();
+        if (!vao) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl",
+                                                                           "EnableVertexAttribArray_State",
+                                                                           "No vertex array object is bound."));
+            return;
         }
 
-        void EnableVertexAttribArray_State(GLuint index) {
-            if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
+        vao->DisableAttribute(index);
+    }
 
-            auto vao = MG_State::pGLContext->GetBoundVertexArray();
-            if (!vao) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "EnableVertexAttribArray_State",
-                                                                               "No vertex array object is bound."));
-                return;
-            }
+    void EnableVertexAttribArray_State(GLuint index) {
+        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
 
-            vao->EnableAttribute(index);
+        auto& vao = MG_State::pGLContext->GetBoundVertexArray();
+        if (!vao) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl",
+                                                                           "EnableVertexAttribArray_State",
+                                                                           "No vertex array object is bound."));
+            return;
         }
 
-        // TODO: implement GL_BGRA support
-        void VertexAttribIPointer_State(GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer) {
-            if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
+        vao->EnableAttribute(index);
+    }
 
-            DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
-            if (!VertexArrayImpl::ValidateVertexAttribPointerParams(index, size, dataType, stride)) return;
+    // TODO: implement GL_BGRA support
+    void VertexAttribIPointer_State(GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer) {
+        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
 
-            auto vao = MG_State::pGLContext->GetBoundVertexArray();
-            if (!vao) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "VertexAttribPointer_State",
-                                                                               "No vertex array object is bound."));
-                return;
-            }
+        DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
+        if (!VertexArrayImpl::ValidateVertexAttribPointerParams(index, size, dataType, stride)) return;
 
-            auto& vboSlot = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Vertex);
-            auto vbo = vboSlot.GetBoundObject();
-            if (!vbo) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribPointer_State",
-                                                 "No buffer is bound to GL_ARRAY_BUFFER."));
-                return;
-            }
-
-            SizeT offset = reinterpret_cast<SizeT>(pointer);
-
-            vao->SetAttributeFormat(index, size, dataType, false, stride, offset, true);
-            vao->BindAttributeBuffer(index, vbo);
+        auto& vao = MG_State::pGLContext->GetBoundVertexArray();
+        if (!vao) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribPointer_State",
+                                                                          "No vertex array object is bound."));
+            return;
         }
 
-        // TODO: implement GL_BGRA support
-        void VertexAttribPointer_State(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
-                                       const void* pointer) {
-            if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
-
-            DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
-            if (!VertexArrayImpl::ValidateVertexAttribPointerParams(index, size, dataType, stride)) return;
-
-            auto vao = MG_State::pGLContext->GetBoundVertexArray();
-            if (!vao) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "VertexAttribPointer_State",
-                                                                               "No vertex array object is bound."));
-                return;
-            }
-
-            auto& vboSlot = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Vertex);
-            auto vbo = vboSlot.GetBoundObject();
-            if (!vbo) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribPointer_State",
-                                                 "No buffer is bound to GL_ARRAY_BUFFER."));
-                return;
-            }
-
-            SizeT offset = reinterpret_cast<SizeT>(pointer);
-
-            vao->SetAttributeFormat(index, size, dataType, normalized, stride, offset, false);
-            vao->BindAttributeBuffer(index, vbo);
+        auto& vboSlot = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Vertex);
+        auto& vbo = vboSlot.GetBoundObject();
+        if (!vbo) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribPointer_State",
+                                                                          "No buffer is bound to GL_ARRAY_BUFFER."));
+            return;
         }
 
-        void BindVertexArray_State(GLuint array) {
-            if (array == 0) {
+        auto offset = reinterpret_cast<SizeT>(pointer);
+
+        vao->SetAttributeFormat(index, size, dataType, false, stride, offset, true);
+        vao->BindAttributeBuffer(index, vbo);
+    }
+
+    // TODO: implement GL_BGRA support
+    void VertexAttribPointer_State(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
+                                   const void* pointer) {
+        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
+
+        DataType dataType = MG_Util::ConvertGLEnumToDataType(type);
+        if (!VertexArrayImpl::ValidateVertexAttribPointerParams(index, size, dataType, stride)) return;
+
+        auto& vao = MG_State::pGLContext->GetBoundVertexArray();
+        if (!vao) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribPointer_State",
+                                                                          "No vertex array object is bound."));
+            return;
+        }
+
+        auto& vboSlot = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Vertex);
+        auto& vbo = vboSlot.GetBoundObject();
+        if (!vbo) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribPointer_State",
+                                                                          "No buffer is bound to GL_ARRAY_BUFFER."));
+            return;
+        }
+
+        SizeT offset = reinterpret_cast<SizeT>(pointer);
+
+        vao->SetAttributeFormat(index, size, dataType, normalized, stride, offset, false);
+        vao->BindAttributeBuffer(index, vbo);
+    }
+
+    void BindVertexArray_State(GLuint array) {
+        if (array == 0) {
+            MG_State::pGLContext->BindVertexArray(0);
+            return;
+        }
+
+        if (!VertexArrayImpl::ValidateVertexArrayName(array)) return;
+
+        if (!MG_State::pGLContext->ValidateVertexArrayObject(array)) {
+            MG_State::pGLContext->CreateVertexArrayObject(array);
+        }
+
+        MG_State::pGLContext->BindVertexArray(array);
+    }
+
+    void DeleteVertexArrays_State(GLsizei n, const GLuint* arrays) {
+        if (n < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteVertexArrays_State", "n must be non-negative."));
+            return;
+        }
+
+        for (GLsizei i = 0; i < n; ++i) {
+            GLuint vao = arrays[i];
+            if (vao == 0) continue;
+
+            if (!VertexArrayImpl::ValidateVertexArrayName(vao)) continue;
+
+            if (MG_State::pGLContext->GetBoundVertexArray() &&
+                MG_State::pGLContext->GetBoundVertexArray() == MG_State::pGLContext->GetVertexArrayObject(vao)) {
                 MG_State::pGLContext->BindVertexArray(0);
-                return;
             }
 
-            if (!VertexArrayImpl::ValidateVertexArrayName(array)) return;
+            MG_State::pGLContext->MarkVertexArrayForDeletion(vao);
+        }
+    }
 
-            if (!MG_State::pGLContext->ValidateVertexArrayObject(array)) {
-                MG_State::pGLContext->CreateVertexArrayObject(array);
-            }
-
-            MG_State::pGLContext->BindVertexArray(array);
+    void GenVertexArrays_State(GLsizei n, GLuint* arrays) {
+        if (n < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "GenVertexArrays_State", "n must be non-negative."));
+            return;
         }
 
-        void DeleteVertexArrays_State(GLsizei n, const GLuint* arrays) {
-            if (n < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "DeleteVertexArrays_State",
-                                                                          "n must be non-negative."));
-                return;
-            }
+        static thread_local Vector<Uint> vaos;
+        MG_State::pGLContext->GenVertexArrayNames(n, vaos);
+        Memcpy(arrays, vaos.data(), n * sizeof(GLuint));
+    }
 
-            for (GLsizei i = 0; i < n; ++i) {
-                GLuint vao = arrays[i];
-                if (vao == 0) continue;
+    GLboolean IsVertexArray_State(GLuint array) {
+        if (array == 0) {
+            MG_State::pGLContext->RecordError(ErrorCode::InvalidValue,
+                                              MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "IsVertexArray_State",
+                                                                           "Vertex array name 0 is not supported."));
+            return GL_FALSE;
+        }
+        if (!VertexArrayImpl::ValidateVertexArrayName(array)) return GL_FALSE;
+        if (!MG_State::pGLContext->ValidateVertexArrayObject(array)) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "IsVertexArray_State",
+                                             std::format("Vertex array object {} does not exist.", array)));
+            return GL_FALSE;
+        }
+        return GL_TRUE;
+    }
 
-                if (!VertexArrayImpl::ValidateVertexArrayName(vao)) continue;
+    void VertexAttribDivisor_State(GLuint index, GLuint divisor) {
+        if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
 
-                if (MG_State::pGLContext->GetBoundVertexArray() &&
-                    MG_State::pGLContext->GetBoundVertexArray() == MG_State::pGLContext->GetVertexArrayObject(vao)) {
-                    MG_State::pGLContext->BindVertexArray(0);
-                }
-
-                MG_State::pGLContext->MarkVertexArrayForDeletion(vao);
-            }
+        auto& vao = MG_State::pGLContext->GetBoundVertexArray();
+        if (!vao) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation, MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "VertexAttribDivisor_State",
+                                                                          "No vertex array object is bound."));
+            return;
         }
 
-        void GenVertexArrays_State(GLsizei n, GLuint* arrays) {
-            if (n < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "GenVertexArrays_State", "n must be non-negative."));
-                return;
-            }
+        vao->SetAttributeDivisor(index, divisor);
+    }
 
-            auto vaoNames = MG_State::pGLContext->GenVertexArrayNames(n);
-            Copy(vaoNames.data(), arrays, vaoNames.size());
-        }
+    /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
+    void VertexAttribDivisor(GLuint index, GLuint divisor) {
+        VertexAttribDivisor_State(index, divisor);
+    }
 
-        GLboolean IsVertexArray_State(GLuint array) {
-            if (array == 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "IsVertexArray_State",
-                                                                          "Vertex array name 0 is not supported."));
-                return GL_FALSE;
-            }
-            if (!VertexArrayImpl::ValidateVertexArrayName(array)) return GL_FALSE;
-            if (!MG_State::pGLContext->ValidateVertexArrayObject(array)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "IsVertexArray_State",
-                                                 std::format("Vertex array object {} does not exist.", array)));
-                return GL_FALSE;
-            }
-            return GL_TRUE;
-        }
+    GLboolean IsVertexArray(GLuint array) {
+        return IsVertexArray_State(array);
+    }
 
-        void VertexAttribDivisor_State(GLuint index, GLuint divisor) {
-            if (!VertexArrayImpl::ValidateVertexAttributeIndex(index)) return;
+    void DisableVertexAttribArray(GLuint index) {
+        DisableVertexAttribArray_State(index);
+    }
 
-            auto vao = MG_State::pGLContext->GetBoundVertexArray();
-            if (!vao) {
-                MG_State::pGLContext->RecordError(ErrorCode::InvalidOperation,
-                                                  MakeShared<GenericErrorInfo>("MG_Impl/GLImpl",
-                                                                               "VertexAttribDivisor_State",
-                                                                               "No vertex array object is bound."));
-                return;
-            }
+    void EnableVertexAttribArray(GLuint index) {
+        EnableVertexAttribArray_State(index);
+    }
 
-            vao->SetAttributeDivisor(index, divisor);
-        }
+    void VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer) {
+        VertexAttribIPointer_State(index, size, type, stride, pointer);
+    }
 
-        /* @INSERTION_POINT:FUNCTION_IMPLEMENTATION@ */
-        void VertexAttribDivisor(GLuint index, GLuint divisor) {
-            VertexAttribDivisor_State(index, divisor);
-        }
+    void VertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
+                             const void* pointer) {
+        VertexAttribPointer_State(index, size, type, normalized, stride, pointer);
+    }
 
-        GLboolean IsVertexArray(GLuint array) {
-            return IsVertexArray_State(array);
-        }
+    void BindVertexArray(GLuint array) {
+        BindVertexArray_State(array);
+    }
 
-        void DisableVertexAttribArray(GLuint index) {
-            DisableVertexAttribArray_State(index);
-        }
+    void DeleteVertexArrays(GLsizei n, const GLuint* arrays) {
+        DeleteVertexArrays_State(n, arrays);
+    }
 
-        void EnableVertexAttribArray(GLuint index) {
-            EnableVertexAttribArray_State(index);
-        }
-
-        void VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer) {
-            VertexAttribIPointer_State(index, size, type, stride, pointer);
-        }
-
-        void VertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
-                                 const void* pointer) {
-            VertexAttribPointer_State(index, size, type, normalized, stride, pointer);
-        }
-
-        void BindVertexArray(GLuint array) {
-            BindVertexArray_State(array);
-        }
-
-        void DeleteVertexArrays(GLsizei n, const GLuint* arrays) {
-            DeleteVertexArrays_State(n, arrays);
-        }
-
-        void GenVertexArrays(GLsizei n, GLuint* arrays) {
-            GenVertexArrays_State(n, arrays);
-        }
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+    void GenVertexArrays(GLsizei n, GLuint* arrays) {
+        GenVertexArrays_State(n, arrays);
+    }
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/VertexArray/GL_VertexArray.h

@@ -9,18 +9,16 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl::GLImpl {
-        /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
-        void VertexAttribDivisor(GLuint index, GLuint divisor);
-        GLboolean IsVertexArray(GLuint array);
-        void DisableVertexAttribArray(GLuint index);
-        void EnableVertexAttribArray(GLuint index);
-        void VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer);
-        void VertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
-                                 const void* pointer);
-        void BindVertexArray(GLuint array);
-        void DeleteVertexArrays(GLsizei n, const GLuint* arrays);
-        void GenVertexArrays(GLsizei n, GLuint* arrays);
-    } // namespace MG_Impl::GLImpl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl::GLImpl {
+    /* @INSERTION_POINT:FUNCTION_DECLARATION@ */
+    void VertexAttribDivisor(GLuint index, GLuint divisor);
+    GLboolean IsVertexArray(GLuint array);
+    void DisableVertexAttribArray(GLuint index);
+    void EnableVertexAttribArray(GLuint index);
+    void VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer);
+    void VertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
+                             const void* pointer);
+    void BindVertexArray(GLuint array);
+    void DeleteVertexArrays(GLsizei n, const GLuint* arrays);
+    void GenVertexArrays(GLsizei n, GLuint* arrays);
+} // namespace MobileGL::MG_Impl::GLImpl

MobileGL/MG_Impl/GLImpl/VertexArray/Validators.cpp

@@ -12,74 +12,71 @@
 #include <MG_Util/Converters/MGToGL/DataTypeConverter.h>
 #include <MG_Util/Converters/MGToStr/DataTypeConverter.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace VertexArrayImpl {
+namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
+    Bool ValidateVertexArrayName(Uint index) {
+        Bool isValid = MG_State::pGLContext->ValidateVertexArrayName(index);
+        if (!isValid) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateVertexArrayName",
+                                             std::format("Vertex array name {} is not valid.", index)));
+            return false;
+        }
+        return true;
+    }
 
-        Bool ValidateVertexArrayName(Uint index) {
-            Bool isValid = MG_State::pGLContext->ValidateVertexArrayName(index);
-            if (!isValid) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateVertexArrayName",
-                                                 std::format("Vertex array name {} is not valid.", index)));
-                return false;
-            }
-            return true;
+    Bool ValidateVertexArrayObject(Uint index) {
+        if (!MG_State::pGLContext->ValidateVertexArrayObject(index)) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidOperation,
+                MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateVertexArrayObject",
+                                             std::format("Vertex array object {} does not exist.", index)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateVertexAttributeIndex(Uint index) {
+        if (index >= MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl", "ValidateVertexAttributeIndex",
+                    std::format("Attribute index {} exceeds maximum of {}.", index,
+                                MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS - 1)));
+            return false;
+        }
+        return true;
+    }
+
+    Bool ValidateVertexAttribPointerParams(Uint index, SizeT size, DataType type, Int stride) {
+        if (size < 1 || size > 4) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl", "ValidateVertexAttribPointerParams",
+                    std::format("Invalid size {} for attribute {}. Must be 1-4.", size, index)));
+            return false;
         }
 
-        Bool ValidateVertexArrayObject(Uint index) {
-            if (!MG_State::pGLContext->ValidateVertexArrayObject(index)) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidOperation,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateVertexArrayObject",
-                                                 std::format("Vertex array object {} does not exist.", index)));
-                return false;
-            }
-            return true;
+        if (type == DataType::Unknown) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidEnum,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl", "ValidateVertexAttribPointerParams",
+                    std::format("Invalid type {} for attribute {}.", MG_Util::ConvertDataTypeToString(type), index)));
+            return false;
         }
 
-        Bool ValidateVertexAttributeIndex(Uint index) {
-            if (index >= MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", "ValidateVertexAttributeIndex",
-                        std::format("Attribute index {} exceeds maximum of {}.", index,
-                                    MG_State::GLState::VertexArrayObject::MAX_VERTEX_ATTRIBS - 1)));
-                return false;
-            }
-            return true;
+        if (stride < 0) {
+            MG_State::pGLContext->RecordError(
+                ErrorCode::InvalidValue,
+                MakeUnique<GenericErrorInfo>(
+                    "MG_Impl/GLImpl", "ValidateVertexAttribPointerParams",
+                    std::format("Negative stride {} is not allowed for attribute {}.", stride, index)));
+            return false;
         }
 
-        Bool ValidateVertexAttribPointerParams(Uint index, SizeT size, DataType type, Int stride) {
-            if (size < 1 || size > 4) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", "ValidateVertexAttribPointerParams",
-                        std::format("Invalid size {} for attribute {}. Must be 1-4.", size, index)));
-                return false;
-            }
-
-            if (type == DataType::Unknown) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidEnum,
-                    MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "ValidateVertexAttribPointerParams",
-                                                 std::format("Invalid type {} for attribute {}.",
-                                                             MG_Util::ConvertDataTypeToString(type).c_str(), index)));
-                return false;
-            }
-
-            if (stride < 0) {
-                MG_State::pGLContext->RecordError(
-                    ErrorCode::InvalidValue,
-                    MakeShared<GenericErrorInfo>(
-                        "MG_Impl/GLImpl", "ValidateVertexAttribPointerParams",
-                        std::format("Negative stride {} is not allowed for attribute {}.", stride, index)));
-                return false;
-            }
-
-            return true;
-        }
-    } // namespace VertexArrayImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+        return true;
+    }
+} // namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl

MobileGL/MG_Impl/GLImpl/VertexArray/Validators.h

@@ -10,11 +10,9 @@
 #include <Includes.h>
 #include <MG_State/GLState/VertexArrayState/VertexArrayObject.h>
 
-namespace MobileGL::MG_Impl::GLImpl {
-    namespace VertexArrayImpl {
-        Bool ValidateVertexArrayName(Uint index);
-        Bool ValidateVertexArrayObject(Uint index);
-        Bool ValidateVertexAttributeIndex(Uint index);
-        Bool ValidateVertexAttribPointerParams(Uint index, SizeT size, DataType type, Int stride);
-    } // namespace VertexArrayImpl
-} // namespace MobileGL::MG_Impl::GLImpl
+namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl {
+    Bool ValidateVertexArrayName(Uint index);
+    Bool ValidateVertexArrayObject(Uint index);
+    Bool ValidateVertexAttributeIndex(Uint index);
+    Bool ValidateVertexAttribPointerParams(Uint index, SizeT size, DataType type, Int stride);
+} // namespace MobileGL::MG_Impl::GLImpl::VertexArrayImpl

MobileGL/MG_Impl/GLXImpl/LookUp/LookUp.h

@@ -10,9 +10,7 @@
 #include <Includes.h>
 #include "MG_Impl/GetProcAddress.h"
 
-namespace MG_Impl {
-    namespace GLXImpl {
-        void* GetProcAddress(const char* name);
-        void* GetProcAddressARB(const char* name);
-    } // namespace GLXImpl
-} // namespace MG_Impl
+namespace MG_Impl::GLXImpl {
+    void* GetProcAddress(const char* name);
+    void* GetProcAddressARB(const char* name);
+} // namespace MG_Impl::GLXImpl

MobileGL/MG_Impl/GetProcAddress.h

@@ -9,8 +9,6 @@
 #pragma once
 #include <Includes.h>
 
-namespace MobileGL {
-    namespace MG_Impl {
-        void* GetProcAddress(const char* name);
-    } // namespace MG_Impl
-} // namespace MobileGL
+namespace MobileGL::MG_Impl {
+    void* GetProcAddress(const char* name);
+} // namespace MobileGL::MG_Impl

MobileGL/MG_Impl/Init.cpp

@@ -18,10 +18,10 @@
 namespace MobileGL::MG_Impl {
     void Init() {
         MGLOG_D("Initializing MobileGL Implementation...");
-        GLImpl::TextureImpl::pProxyTextureManager = new GLImpl::TextureImpl::ProxyTextureManager();
+        GLImpl::TextureImpl::pProxyTextureManager = MakeUnique<GLImpl::TextureImpl::ProxyTextureManager>();
 
         // TODO: get real info in EGL
-        auto fbo0 = MG_State::pGLContext->CreateFramebufferObject(0);
+        auto& fbo0 = MG_State::pGLContext->CreateFramebufferObject(0);
         auto colorTex = MakeShared<MG_State::GLState::TextureObject2D>(0);
         colorTex->SetInternalFormat(TextureInternalFormat::RGBA8);
         colorTex->AllocateStorage(TextureUploadTarget::Texture2D, 0, {{512, 512, 1}, 0});
@@ -38,6 +38,8 @@ namespace MobileGL::MG_Impl {
         fbo0->AttachTexture(FramebufferAttachmentType::Depth, depthTex);
         fbo0->AttachTexture(FramebufferAttachmentType::Stencil, stencilTex);
         GLImpl::FramebufferImpl::pDefaultFramebufferInfo =
-            new GLImpl::FramebufferImpl::DefaultFramebufferInfo(fbo0, colorTex, depthTex, stencilTex);
+            MakeUnique<GLImpl::FramebufferImpl::DefaultFramebufferInfo>(fbo0, colorTex, depthTex, stencilTex);
+        MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Draw).Bind(fbo0);
+        MG_State::pGLContext->GetFramebufferBindingSlot(FramebufferTarget::Read).Bind(fbo0);
     }
 } // namespace MobileGL::MG_Impl

MobileGL/MG_State/EGLState/Core.cpp

@@ -16,6 +16,10 @@ namespace MobileGL {
                 constexpr EGLint EGL_DISPLAY_MINOR_VERSION = 5;
             } // namespace
 
+            Bool EGLContext::DisplayLookupKey::operator==(const DisplayLookupKey& rhs) const {
+                return this->NativeDisplayKey == rhs.NativeDisplayKey && this->Platform == rhs.Platform;
+            }
+
             SizeT EGLContext::DisplayLookupHasher::operator()(const DisplayLookupKey& key) const {
                 const auto nativeHash = std::hash<Uint64>{}(key.NativeDisplayKey);
                 const auto platformHash = std::hash<Uint64>{}(static_cast<Uint64>(key.Platform));
@@ -388,8 +392,6 @@ namespace MobileGL {
                     *value = cfg->SurfaceType;
                     return true;
                 case EGL_RENDERABLE_TYPE:
-                    *value = cfg->RenderableType;
-                    return true;
                 case EGL_CONFORMANT:
                     *value = cfg->RenderableType;
                     return true;
@@ -878,8 +880,8 @@ namespace MobileGL {
             Bool EGLContext::MakeCurrent(EGLDisplayHandle display, EGLSurfaceHandle draw, EGLSurfaceHandle read,
                                          EGLContextHandle context) {
                 const std::lock_guard<std::recursive_mutex> lock(m_mutex);
-                const Bool releaseCurrentRequest = display == EGL_NO_DISPLAY && draw == EGL_NO_SURFACE &&
-                                                   read == EGL_NO_SURFACE && context == nullptr;
+                const Bool releaseCurrentRequest =
+                    display == EGL_NO_DISPLAY && draw == EGL_NO_SURFACE && read == EGL_NO_SURFACE && context == nullptr;
                 const auto threadKey = CurrentThreadKey();
                 if (releaseCurrentRequest) {
                     ReleaseThreadUnlocked(threadKey);
@@ -1130,6 +1132,6 @@ namespace MobileGL {
             }
         } // namespace EGLState
 
-        EGLState::EGLContext* pEGLContext;
+        UniquePtr<EGLState::EGLContext> pEGLContext;
     } // namespace MG_State
 } // namespace MobileGL

MobileGL/MG_State/EGLState/Core.h

@@ -115,7 +115,7 @@ namespace MobileGL {
                     Uint64 NativeDisplayKey = 0;
                     EGLenum Platform = EGL_NONE;
 
-                    Bool operator==(const DisplayLookupKey& rhs) const = default;
+                    Bool operator==(const DisplayLookupKey& rhs) const;
                 };
 
                 struct DisplayLookupHasher {
@@ -253,6 +253,6 @@ namespace MobileGL {
             };
         } // namespace EGLState
 
-        extern EGLState::EGLContext* pEGLContext;
+        extern UniquePtr<EGLState::EGLContext> pEGLContext;
     } // namespace MG_State
 } // namespace MobileGL

MobileGL/MG_State/GLState/BufferState/BufferObject.cpp

@@ -7,210 +7,203 @@
 // End of Source File Header
 
 #include "BufferObject.h"
-#include "MG_Util/Types.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            BufferObject::BufferObject(Uint externalIndex)
-                : m_externalIndex(externalIndex), m_size(0), m_usage(BufferUsage::StaticDraw), m_isMapped(false),
-                  m_mappingAccess(BufferMappingAccessBit::Null),
-                  m_change(BufferChangeBits::DirtyBit | BufferChangeBits::PreferReallocationBit), m_mappedRange({0, 0}),
-                  m_dataPtr(MakeShared<Data>()) {
-                m_change.DirtyRanges.reserve(BufferChange::DEFAULT_RESERVED_DIRTY_RANGES_COUNT);
-            }
+namespace MobileGL::MG_State::GLState {
+    BufferObject::BufferObject(Uint externalIndex)
+        : m_externalIndex(externalIndex), m_size(0), m_usage(BufferUsage::StaticDraw), m_isMapped(false),
+          m_mappingAccess(BufferMappingAccessBit::Null),
+          m_change(BufferChangeBits::DirtyBit | BufferChangeBits::PreferReallocationBit), m_mappedRange({0, 0}),
+          m_dataPtr(MakeShared<Data>()), m_ownsStagingData{} {
+        m_change.DirtyRanges.reserve(BufferChange::DEFAULT_RESERVED_DIRTY_RANGES_COUNT);
+    }
 
-            void BufferObject::Resize(SizeT size) {
-                m_size = size;
-                m_dataPtr->reserve(std::bit_ceil(size)); // power-of-2 reserve
-                m_dataPtr->resize(size);
+    void BufferObject::Resize(SizeT size) {
+        m_size = size;
+        m_dataPtr->reserve(std::bit_ceil(size)); // power-of-2 reserve
+        m_dataPtr->resize(size);
+        m_change.Bits |= BufferChangeBits::DirtyBit;
+        m_change.Bits |= BufferChangeBits::PreferReallocationBit;
+    }
+
+    void BufferObject::UploadData(DataPtr data, SizeT atOffset) {
+        MOBILEGL_ASSERT(atOffset + data.size <= m_size,
+                        "UploadData out of bounds: atOffset (%zu) + data.size (%zu) > m_size (%zu)", atOffset,
+                        data.size, m_size);
+        MOBILEGL_ASSERT(!m_isMapped, "Cannot upload data while buffer is mapped.");
+        Memcpy(m_dataPtr->data() + atOffset, data.data, data.size);
+        m_change.DirtyRanges.Add({atOffset, atOffset + data.size});
+        m_change.Bits |= BufferChangeBits::DirtyBit;
+        m_change.Bits |= BufferChangeBits::ForbidInvalidationBit;
+        m_change.Bits |= BufferChangeBits::ForbidUnsynchronizationBit;
+        // This function may be called by `glBufferData`, but we still set the forbid bits above,
+        // because when `PreferReallocationBit` is set, those bits are ignored anyway.
+        // The bits can fit the `glBufferSubData` semantics
+        // (though `glBufferSubData` calls `UploadSubData` instead).
+    }
+
+    void BufferObject::SetUsage(BufferUsage usage) {
+        m_usage = usage;
+    }
+
+    void BufferObject::ReleaseMemory() {
+        if (!m_isMapped) return;
+
+        if (m_mappingAccess & BufferMappingAccessBit::Write) {                // if we wrote to the buffer
+            if (!(m_mappingAccess & BufferMappingAccessBit::FlushExplicit)) { // if we didn't flush explicitly
+                Memcpy(m_dataPtr->data() + m_mappedRange.start, m_stagingData.data(),
+                       m_mappedRange.end - m_mappedRange.start);
+                m_change.DirtyRanges.Add({m_mappedRange.start, m_mappedRange.end});
                 m_change.Bits |= BufferChangeBits::DirtyBit;
-                m_change.Bits |= BufferChangeBits::PreferReallocationBit;
             }
 
-            void BufferObject::UploadData(DataPtr data, SizeT atOffset) {
-                MOBILEGL_ASSERT(atOffset + data.size <= m_size,
-                                "UploadData out of bounds: atOffset (%zu) + data.size (%zu) > m_size (%zu)", atOffset,
-                                data.size, m_size);
-                MOBILEGL_ASSERT(!m_isMapped, "Cannot upload data while buffer is mapped.");
-                Memcpy(m_dataPtr->data() + atOffset, data.data, data.size);
-                m_change.DirtyRanges.Add({atOffset, atOffset + data.size});
-                m_change.Bits |= BufferChangeBits::DirtyBit;
-                m_change.Bits |= BufferChangeBits::ForbidInvalidationBit;
-                m_change.Bits |= BufferChangeBits::ForbidUnsynchronizationBit;
-                // This function may be called by `glBufferData`, but we still set the forbid bits above,
-                // because when `PreferReallocationBit` is set, those bits are ignored anyway.
-                // The bits can fit the `glBufferSubData` semantics
-                // (though `glBufferSubData` calls `UploadSubData` instead).
-            }
+            m_stagingData.clear();
+        }
 
-            void BufferObject::SetUsage(BufferUsage usage) {
-                m_usage = usage;
-            }
+        m_isMapped = false;
+        m_mappingAccess = BufferMappingAccessBit::Null;
+        m_mappedRange = {0, 0};
+        m_ownsStagingData = false;
+    }
 
-            void BufferObject::ReleaseMemory() {
-                if (!m_isMapped) return;
+    void BufferObject::FlushMemoryRange(SizeT offset, SizeT length) {
+        MOBILEGL_ASSERT(m_isMapped, "Buffer must be mapped to flush memory range.");
+        MOBILEGL_ASSERT((m_mappingAccess & BufferMappingAccessBit::FlushExplicit),
+                        "Buffer must be mapped with FlushExplicit access to flush memory range.");
+        MOBILEGL_ASSERT((m_mappingAccess & BufferMappingAccessBit::Write),
+                        "Buffer must be mapped with Write access to flush memory range.");
 
-                if (m_mappingAccess & BufferMappingAccessBit::Write) {                // if we wrote to the buffer
-                    if (!(m_mappingAccess & BufferMappingAccessBit::FlushExplicit)) { // if we didn't flush explicitly
-                        Memcpy(m_dataPtr->data() + m_mappedRange.start, m_stagingData.data(),
-                               m_mappedRange.end - m_mappedRange.start);
-                        m_change.DirtyRanges.Add({m_mappedRange.start, m_mappedRange.end});
-                        m_change.Bits |= BufferChangeBits::DirtyBit;
-                    }
+        SizeT start = m_mappedRange.start + offset;
+        SizeT end = start + length;
+        MOBILEGL_ASSERT(end <= m_mappedRange.end, "Flush range out of bounds: mappedRange.end (%zu) < end (%zu)",
+                        m_mappedRange.end, end);
 
-                    m_stagingData.clear();
+        Memcpy(m_dataPtr->data() + start, m_stagingData.data() + offset, length);
+        m_change.DirtyRanges.Add({start, end});
+        m_change.Bits |= BufferChangeBits::DirtyBit;
+    }
+
+    void BufferObject::UploadSubData(DataPtr data, SizeT atOffset) {
+        MOBILEGL_ASSERT(!m_isMapped, "Cannot upload sub data while buffer is mapped.");
+        MOBILEGL_ASSERT(atOffset + data.size <= m_size,
+                        "UploadSubData out of bounds: atOffset (%zu) + data.size (%zu) > m_size (%zu)", atOffset,
+                        data.size, m_size);
+
+        Memcpy(m_dataPtr->data() + atOffset, data.data, data.size);
+        m_change.DirtyRanges.Add({atOffset, atOffset + data.size});
+        m_change.Bits |= BufferChangeBits::DirtyBit;
+        m_change.Bits |= BufferChangeBits::ForbidInvalidationBit;
+        m_change.Bits |= BufferChangeBits::ForbidUnsynchronizationBit;
+    }
+
+    void BufferObject::CopyDataFrom(const SharedPtr<BufferObject>& src, SizeT srcOffset, SizeT dstOffset, SizeT size) {
+        MOBILEGL_ASSERT(!m_isMapped, "Cannot copy data while buffer is mapped.");
+        MOBILEGL_ASSERT(!src->IsMapped(), "Cannot copy data from a buffer that is mapped.");
+        MOBILEGL_ASSERT(srcOffset + size <= src->GetSize(),
+                        "Source buffer copy out of bounds: srcOffset (%zu) + size (%zu) > src->GetSize() (%zu)",
+                        srcOffset, size, src->GetSize());
+        MOBILEGL_ASSERT(dstOffset + size <= m_size,
+                        "Destination buffer copy out of bounds: dstOffset (%zu) + size (%zu) > m_size (%zu)", dstOffset,
+                        size, m_size);
+
+        const Uint8* srcData = src->m_dataPtr->data() + srcOffset;
+        Memcpy(m_dataPtr->data() + dstOffset, srcData, size);
+        m_change.DirtyRanges.Add({dstOffset, dstOffset + size});
+        m_change.Bits |= BufferChangeBits::DirtyBit;
+    }
+
+    void* BufferObject::AcquireMemory(Bool markMapped, Bool read, Bool write) {
+        if (markMapped) {
+            m_isMapped = true;
+            auto a = BufferMappingAccessBit::Coherent | BufferMappingAccessBit::Read;
+            m_mappingAccess = (read ? BufferMappingAccessBit::Read : BufferMappingAccessBit::Null) |
+                              (write ? BufferMappingAccessBit::Write : BufferMappingAccessBit::Null);
+            m_mappedRange = {0, m_size};
+
+            if (m_mappingAccess & BufferMappingAccessBit::Write) {
+                m_stagingData.resize(m_size);
+                m_ownsStagingData = true;
+
+                if (!(m_mappingAccess &
+                      (BufferMappingAccessBit::InvalidateRange | BufferMappingAccessBit::InvalidateBuffer))) {
+                    Memcpy(m_stagingData.data(), m_dataPtr->data(), m_size);
                 }
 
-                m_isMapped = false;
-                m_mappingAccess = BufferMappingAccessBit::Null;
-                m_mappedRange = {0, 0};
-                m_ownsStagingData = false;
+                return m_stagingData.data();
+            }
+        }
+
+        return m_dataPtr->data();
+    }
+
+    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);
+        m_isMapped = true;
+        m_mappingAccess = access;
+        m_mappedRange = range;
+
+        if (access & BufferMappingAccessBit::Write) {
+            m_stagingData.resize(range.end - range.start);
+            m_ownsStagingData = true;
+
+            if (!(access & (BufferMappingAccessBit::InvalidateRange | BufferMappingAccessBit::InvalidateBuffer))) {
+                Memcpy(m_stagingData.data(), m_dataPtr->data() + range.start, m_stagingData.size());
             }
 
-            void BufferObject::FlushMemoryRange(SizeT offset, SizeT length) {
-                MOBILEGL_ASSERT(m_isMapped, "Buffer must be mapped to flush memory range.");
-                MOBILEGL_ASSERT((m_mappingAccess & BufferMappingAccessBit::FlushExplicit),
-                                "Buffer must be mapped with FlushExplicit access to flush memory range.");
-                MOBILEGL_ASSERT((m_mappingAccess & BufferMappingAccessBit::Write),
-                                "Buffer must be mapped with Write access to flush memory range.");
+            return m_stagingData.data();
+        } else {
+            m_ownsStagingData = false;
+            return m_dataPtr->data() + range.start;
+        }
 
-                SizeT start = m_mappedRange.start + offset;
-                SizeT end = start + length;
-                MOBILEGL_ASSERT(end <= m_mappedRange.end,
-                                "Flush range out of bounds: mappedRange.end (%zu) < end (%zu)", m_mappedRange.end, end);
+        m_change.Bits |=
+            !(access & BufferMappingAccessBit::InvalidateBuffer || access & BufferMappingAccessBit::InvalidateRange)
+                ? BufferChangeBits::ForbidInvalidationBit
+                : BufferChangeBits::None;
+        m_change.Bits |= !(access & BufferMappingAccessBit::Unsynchronized)
+                             ? BufferChangeBits::ForbidUnsynchronizationBit
+                             : BufferChangeBits::None;
+    }
 
-                Memcpy(m_dataPtr->data() + start, m_stagingData.data() + offset, length);
-                m_change.DirtyRanges.Add({start, end});
-                m_change.Bits |= BufferChangeBits::DirtyBit;
-            }
+    const SharedPtr<Data>& BufferObject::GetDataReadOnly() const {
+        return m_dataPtr;
+    }
 
-            void BufferObject::UploadSubData(DataPtr data, SizeT atOffset) {
-                MOBILEGL_ASSERT(!m_isMapped, "Cannot upload sub data while buffer is mapped.");
-                MOBILEGL_ASSERT(atOffset + data.size <= m_size,
-                                "UploadSubData out of bounds: atOffset (%zu) + data.size (%zu) > m_size (%zu)",
-                                atOffset, data.size, m_size);
+    void BufferObject::ClearDirty() {
+        m_change.DirtyRanges.clear();
+        m_change.Bits = BufferChangeBits::None;
+    }
 
-                Memcpy(m_dataPtr->data() + atOffset, data.data, data.size);
-                m_change.DirtyRanges.Add({atOffset, atOffset + data.size});
-                m_change.Bits |= BufferChangeBits::DirtyBit;
-                m_change.Bits |= BufferChangeBits::ForbidInvalidationBit;
-                m_change.Bits |= BufferChangeBits::ForbidUnsynchronizationBit;
-            }
+    SizeT BufferObject::GetSize() const {
+        return m_size;
+    }
 
-            void BufferObject::CopyDataFrom(const SharedPtr<BufferObject>& src, SizeT srcOffset, SizeT dstOffset,
-                                            SizeT size) {
-                MOBILEGL_ASSERT(!m_isMapped, "Cannot copy data while buffer is mapped.");
-                MOBILEGL_ASSERT(!src->IsMapped(), "Cannot copy data from a buffer that is mapped.");
-                MOBILEGL_ASSERT(srcOffset + size <= src->GetSize(),
-                                "Source buffer copy out of bounds: srcOffset (%zu) + size (%zu) > src->GetSize() (%zu)",
-                                srcOffset, size, src->GetSize());
-                MOBILEGL_ASSERT(dstOffset + size <= m_size,
-                                "Destination buffer copy out of bounds: dstOffset (%zu) + size (%zu) > m_size (%zu)",
-                                dstOffset, size, m_size);
+    BufferUsage BufferObject::GetUsage() const {
+        return m_usage;
+    }
 
-                const Uint8* srcData = src->m_dataPtr->data() + srcOffset;
-                Memcpy(m_dataPtr->data() + dstOffset, srcData, size);
-                m_change.DirtyRanges.Add({dstOffset, dstOffset + size});
-                m_change.Bits |= BufferChangeBits::DirtyBit;
-            }
+    const VecRange1D& BufferObject::GetDirtyRanges() const {
+        return m_change.DirtyRanges;
+    }
 
-            void* BufferObject::AcquireMemory(Bool markMapped, Bool read, Bool write) {
-                if (markMapped) {
-                    m_isMapped = true;
-                    auto a = BufferMappingAccessBit::Coherent | BufferMappingAccessBit::Read;
-                    m_mappingAccess = (read ? BufferMappingAccessBit::Read : BufferMappingAccessBit::Null) |
-                                      (write ? BufferMappingAccessBit::Write : BufferMappingAccessBit::Null);
-                    m_mappedRange = {0, m_size};
+    Flags<BufferChangeBits> BufferObject::GetChangeBits() const {
+        return m_change.Bits;
+    }
 
-                    if (m_mappingAccess & BufferMappingAccessBit::Write) {
-                        m_stagingData.resize(m_size);
-                        m_ownsStagingData = true;
+    Bool BufferObject::IsMapped() const {
+        return m_isMapped;
+    }
 
-                        if (!(m_mappingAccess &
-                              (BufferMappingAccessBit::InvalidateRange | BufferMappingAccessBit::InvalidateBuffer))) {
-                            Memcpy(m_stagingData.data(), m_dataPtr->data(), m_size);
-                        }
+    Range1D BufferObject::GetMappedRange() const {
+        return m_isMapped ? m_mappedRange : Range1D{0, 0};
+    }
 
-                        return m_stagingData.data();
-                    }
-                }
+    Flags<BufferMappingAccessBit> BufferObject::GetMappingAccess() const {
+        return m_isMapped ? m_mappingAccess : BufferMappingAccessBit::Null;
+    }
 
-                return m_dataPtr->data();
-            }
-
-            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);
-                m_isMapped = true;
-                m_mappingAccess = access;
-                m_mappedRange = range;
-
-                if (access & BufferMappingAccessBit::Write) {
-                    m_stagingData.resize(range.end - range.start);
-                    m_ownsStagingData = true;
-
-                    if (!(access &
-                          (BufferMappingAccessBit::InvalidateRange | BufferMappingAccessBit::InvalidateBuffer))) {
-                        Memcpy(m_stagingData.data(), m_dataPtr->data() + range.start, m_stagingData.size());
-                    }
-
-                    return m_stagingData.data();
-                } else {
-                    m_ownsStagingData = false;
-                    return m_dataPtr->data() + range.start;
-                }
-
-                m_change.Bits |= !(access & BufferMappingAccessBit::InvalidateBuffer ||
-                                   access & BufferMappingAccessBit::InvalidateRange)
-                                     ? BufferChangeBits::ForbidInvalidationBit
-                                     : BufferChangeBits::None;
-                m_change.Bits |= !(access & BufferMappingAccessBit::Unsynchronized)
-                                     ? BufferChangeBits::ForbidUnsynchronizationBit
-                                     : BufferChangeBits::None;
-            }
-
-            const SharedPtr<Data> BufferObject::GetDataReadOnly() const {
-                return m_dataPtr;
-            }
-
-            void BufferObject::ClearDirty() {
-                m_change.DirtyRanges.clear();
-                m_change.Bits = BufferChangeBits::None;
-            }
-
-            SizeT BufferObject::GetSize() const {
-                return m_size;
-            }
-
-            BufferUsage BufferObject::GetUsage() const {
-                return m_usage;
-            }
-
-            const VecRange1D& BufferObject::GetDirtyRanges() const {
-                return m_change.DirtyRanges;
-            }
-
-            Flags<BufferChangeBits> BufferObject::GetChangeBits() const {
-                return m_change.Bits;
-            }
-
-            Bool BufferObject::IsMapped() const {
-                return m_isMapped;
-            }
-
-            Range1D BufferObject::GetMappedRange() const {
-                return m_isMapped ? m_mappedRange : Range1D{0, 0};
-            }
-
-            Flags<BufferMappingAccessBit> BufferObject::GetMappingAccess() const {
-                return m_isMapped ? m_mappingAccess : BufferMappingAccessBit::Null;
-            }
-
-            Uint BufferObject::GetExternalIndex() const {
-                return m_externalIndex;
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    Uint BufferObject::GetExternalIndex() const {
+        return m_externalIndex;
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/BufferState/BufferObject.h

@@ -7,7 +7,6 @@
 // End of Source File Header
 
 #pragma once
-#include "MG_Util/Types.h"
 #include <Includes.h>
 #include <MG_Util/Math/VectorTypes.h>
 
@@ -73,47 +72,45 @@ namespace MobileGL {
         VecRange1D DirtyRanges;
     };
 
-    namespace MG_State {
-        namespace GLState {
-            class BufferObject {
-            public:
-                using TargetEnum = BufferTarget;
+    namespace MG_State::GLState {
+        class BufferObject {
+        public:
+            using TargetEnum = BufferTarget;
 
-                BufferObject(Uint externalIndex);
+            BufferObject(Uint externalIndex);
 
-                void Resize(SizeT size);
-                void UploadData(DataPtr data, SizeT atOffset);
-                void SetUsage(BufferUsage usage);
-                void* AcquireMemory(Bool markMapped, Bool read, Bool write);
-                void* AcquireMemoryRange(Range1D range, Flags<BufferMappingAccessBit> access);
-                void ReleaseMemory();
-                void FlushMemoryRange(SizeT offset, SizeT length);
-                void UploadSubData(DataPtr data, SizeT atOffset);
-                void CopyDataFrom(const SharedPtr<BufferObject>& src, SizeT srcOffset, SizeT dstOffset, SizeT size);
-                void ClearDirty();
+            void Resize(SizeT size);
+            void UploadData(DataPtr data, SizeT atOffset);
+            void SetUsage(BufferUsage usage);
+            void* AcquireMemory(Bool markMapped, Bool read, Bool write);
+            void* AcquireMemoryRange(Range1D range, Flags<BufferMappingAccessBit> access);
+            void ReleaseMemory();
+            void FlushMemoryRange(SizeT offset, SizeT length);
+            void UploadSubData(DataPtr data, SizeT atOffset);
+            void CopyDataFrom(const SharedPtr<BufferObject>& src, SizeT srcOffset, SizeT dstOffset, SizeT size);
+            void ClearDirty();
 
-                Bool IsMapped() const;
-                SizeT GetSize() const;
-                BufferUsage GetUsage() const;
-                Range1D GetMappedRange() const;
-                const SharedPtr<Data> GetDataReadOnly() const;
-                Flags<BufferMappingAccessBit> GetMappingAccess() const;
-                Uint GetExternalIndex() const;
-                const VecRange1D& GetDirtyRanges() const;
-                Flags<BufferChangeBits> GetChangeBits() const;
+            Bool IsMapped() const;
+            SizeT GetSize() const;
+            BufferUsage GetUsage() const;
+            Range1D GetMappedRange() const;
+            const SharedPtr<Data>& GetDataReadOnly() const;
+            Flags<BufferMappingAccessBit> GetMappingAccess() const;
+            Uint GetExternalIndex() const;
+            const VecRange1D& GetDirtyRanges() const;
+            Flags<BufferChangeBits> GetChangeBits() const;
 
-            private:
-                const Uint m_externalIndex = 0;
-                SizeT m_size = 0;
-                BufferUsage m_usage = BufferUsage::StaticDraw;
-                SharedPtr<Data> m_dataPtr;
-                Bool m_isMapped;
-                Flags<BufferMappingAccessBit> m_mappingAccess;
-                BufferChange m_change;
-                Range1D m_mappedRange;
-                Vector<Uint8> m_stagingData;
-                Bool m_ownsStagingData;
-            };
-        } // namespace GLState
-    } // namespace MG_State
+        private:
+            const Uint m_externalIndex = 0;
+            SizeT m_size = 0;
+            BufferUsage m_usage = BufferUsage::StaticDraw;
+            SharedPtr<Data> m_dataPtr;
+            Bool m_isMapped;
+            Flags<BufferMappingAccessBit> m_mappingAccess;
+            BufferChange m_change;
+            Range1D m_mappedRange;
+            Vector<Uint8> m_stagingData;
+            Bool m_ownsStagingData;
+        };
+    } // namespace MG_State::GLState
 } // namespace MobileGL

MobileGL/MG_State/GLState/BufferState/BufferState.cpp

@@ -8,78 +8,75 @@
 
 #include "BufferState.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            BufferState::BufferState() : m_indexGenerator(1024, 1) {
-                for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                    m_bindingSlots[i] = BindingSlot<BufferObject>(GlobalBufferTargets[i]);
-                }
-            }
+namespace MobileGL::MG_State::GLState {
+    BufferState::BufferState() : m_indexGenerator(1024, 1) {
+        for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
+            m_bindingSlots[i] = BindingSlot<BufferObject>(GlobalBufferTargets[i]);
+        }
+    }
 
-            SharedPtr<BufferObject> BufferState::GetBufferObject(Uint index) {
-                auto it = m_bufferObjects.find(index);
-                if (it != m_bufferObjects.end()) {
-                    return it->second;
-                }
-                return nullptr;
-            }
+    const SharedPtr<BufferObject>& BufferState::GetBufferObject(Uint index) {
+        auto it = m_bufferObjects.find(index);
+        if (it != m_bufferObjects.end()) {
+            return it->second;
+        }
+        static SharedPtr<BufferObject> nullBufferObject = nullptr;
+        return nullBufferObject;
+    }
 
-            Vector<Uint> BufferState::GenerateNames(Uint number) {
-                Vector<Uint> buffers(number);
-                m_indexGenerator.Generate(number, buffers.data());
-                return buffers;
-            }
+    void BufferState::GenerateNames(Uint number, Vector<Uint>& buffers) {
+        buffers.resize(number);
+        m_indexGenerator.Generate(number, buffers.data());
+    }
 
-            SharedPtr<BufferObject> BufferState::CreateBufferObject(Uint index) {
-                auto bufferObject = MakeShared<BufferObject>(index);
-                m_bufferObjects[index] = bufferObject;
-                return bufferObject;
-            }
+    const SharedPtr<BufferObject>& BufferState::CreateBufferObject(Uint index) {
+        auto& bufferObj = m_bufferObjects[index];
+        if (!bufferObj) {
+            bufferObj = MakeShared<BufferObject>(index);
+        }
+        return bufferObj;
+    }
 
-            BindingSlot<BufferObject>& BufferState::GetBindingSlot(BufferTarget target) {
-                for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                    if (m_bindingSlots[i].GetTarget() == target) {
-                        return m_bindingSlots[i];
+    BindingSlot<BufferObject>& BufferState::GetBindingSlot(BufferTarget target) {
+        for (auto& bindingSlot : m_bindingSlots) {
+            if (bindingSlot.GetTarget() == target) {
+                return bindingSlot;
+            }
+        }
+        MOBILEGL_ASSERT(false, "Invalid BufferTarget enum value: %d", static_cast<int>(target));
+        return m_bindingSlots[0];
+    }
+
+    void BufferState::MarkBufferObjectForDeletion(Uint index) {
+        if (m_indexGenerator.IsValid(index)) {
+            auto it = m_bufferObjects.find(index);
+            if (it != m_bufferObjects.end()) {
+                for (auto& bindingSlot : m_bindingSlots) {
+                    if (bindingSlot.GetBoundObject() == it->second) {
+                        bindingSlot.Bind(nullptr);
                     }
                 }
-                MOBILEGL_ASSERT(false, "Invalid BufferTarget enum value: %d", static_cast<int>(target));
-                return m_bindingSlots[0];
+                m_bufferObjects.erase(it);
             }
+            m_indexGenerator.Delete(index);
+        }
+    }
 
-            void BufferState::MarkBufferObjectForDeletion(Uint index) {
-                if (m_indexGenerator.IsValid(index)) {
-                    auto it = m_bufferObjects.find(index);
-                    if (it != m_bufferObjects.end()) {
-                        for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                            if (m_bindingSlots[i].GetBoundObject() == it->second) {
-                                m_bindingSlots[i].Bind(nullptr);
-                            }
-                        }
-                        m_bufferObjects.erase(it);
-                    }
-                    m_indexGenerator.Delete(index);
-                }
-            }
+    Bool BufferState::ValidateName(Uint index) const {
+        return m_indexGenerator.IsValid(index);
+    }
 
-            Bool BufferState::ValidateName(Uint index) const {
-                return m_indexGenerator.IsValid(index);
-            }
+    Bool BufferState::ValidateBufferObject(Uint index) const {
+        return m_bufferObjects.find(index) != m_bufferObjects.end();
+    }
 
-            Bool BufferState::ValidateBufferObject(Uint index) const {
-                return m_bufferObjects.find(index) != m_bufferObjects.end();
+    BindingSlotRange1D<BufferObject>& BufferState::GetBindingPoint(BufferTarget target, Uint index) {
+        for (SizeT i = 0; i < BufferBindPointTargets.size(); ++i) {
+            if (BufferBindPointTargets[i] == target) {
+                return m_bufferBindPointTargets[i][index];
             }
-
-            BindingSlotRange1D<BufferObject>& BufferState::GetBindingPoint(BufferTarget target, Uint index) {
-                for (SizeT i = 0; i < BufferBindPointTargets.size(); ++i) {
-                    if (BufferBindPointTargets[i] == target) {
-                        return m_bufferBindPointTargets[i][index];
-                    }
-                }
-                MOBILEGL_ASSERT(false, "Invalid BufferTarget enum value for binding point: %d",
-                                static_cast<int>(target));
-                return m_bufferBindPointTargets[0][index];
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+        }
+        MOBILEGL_ASSERT(false, "Invalid BufferTarget enum value for binding point: %d", static_cast<int>(target));
+        return m_bufferBindPointTargets[0][index];
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/BufferState/BufferState.h

@@ -11,46 +11,40 @@
 #include <MG_Util/Miscellany/IndexGenerator.h>
 #include "BufferObject.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            constexpr const auto GlobalBufferTargets =
-                ToArray(BufferTarget::Vertex, BufferTarget::Uniform, BufferTarget::CopyRead, BufferTarget::CopyWrite,
-                        BufferTarget::PixelPack, BufferTarget::PixelUnpack, BufferTarget::Query, BufferTarget::Texture,
-                        BufferTarget::TransformFeedback, BufferTarget::AtomicCounter, BufferTarget::DispatchIndirect,
-                        BufferTarget::DrawIndirect, BufferTarget::ShaderStorage);
-            constexpr const auto BufferBindPointTargets =
-                ToArray(BufferTarget::Uniform, BufferTarget::TransformFeedback, BufferTarget::AtomicCounter,
-                        BufferTarget::ShaderStorage);
+namespace MobileGL::MG_State::GLState {
+    constexpr const auto GlobalBufferTargets =
+        ToArray(BufferTarget::Vertex, BufferTarget::Uniform, BufferTarget::CopyRead, BufferTarget::CopyWrite,
+                BufferTarget::PixelPack, BufferTarget::PixelUnpack, BufferTarget::Query, BufferTarget::Texture,
+                BufferTarget::TransformFeedback, BufferTarget::AtomicCounter, BufferTarget::DispatchIndirect,
+                BufferTarget::DrawIndirect, BufferTarget::ShaderStorage);
+    constexpr const auto BufferBindPointTargets = ToArray(BufferTarget::Uniform, BufferTarget::TransformFeedback,
+                                                          BufferTarget::AtomicCounter, BufferTarget::ShaderStorage);
 
-            class BufferState {
-            public:
-                BufferState();
+    class BufferState {
+    public:
+        BufferState();
 
-                SharedPtr<BufferObject> GetBufferObject(Uint index);
-                Vector<Uint> GenerateNames(Uint number);
-                SharedPtr<BufferObject> CreateBufferObject(Uint index);
-                BindingSlot<BufferObject>& GetBindingSlot(BufferTarget target);
-                // For glBindBufferBase / glBindBufferRange
-                BindingSlotRange1D<BufferObject>& GetBindingPoint(BufferTarget target, Uint index);
-                constexpr SizeT GetBindingPointCount(const BufferTarget target) const {
-                    auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
-                    auto index = std::distance(BufferBindPointTargets.begin(), it);
-                    return m_bufferBindPointTargets[index].size();
-                }
-                void MarkBufferObjectForDeletion(Uint index);
-                Bool ValidateName(Uint index) const;
-                Bool ValidateBufferObject(Uint index) const;
+        const SharedPtr<BufferObject>& GetBufferObject(Uint index);
+        void GenerateNames(Uint number, Vector<Uint>& buffers);
+        const SharedPtr<BufferObject>& CreateBufferObject(Uint index);
+        BindingSlot<BufferObject>& GetBindingSlot(BufferTarget target);
+        // For glBindBufferBase / glBindBufferRange
+        BindingSlotRange1D<BufferObject>& GetBindingPoint(BufferTarget target, Uint index);
+        constexpr SizeT GetBindingPointCount(const BufferTarget target) const {
+            auto it = std::find(BufferBindPointTargets.begin(), BufferBindPointTargets.end(), target);
+            auto index = std::distance(BufferBindPointTargets.begin(), it);
+            return m_bufferBindPointTargets[index].size();
+        }
+        void MarkBufferObjectForDeletion(Uint index);
+        Bool ValidateName(Uint index) const;
+        Bool ValidateBufferObject(Uint index) const;
 
-            private:
-                UnorderedMap<Uint, SharedPtr<BufferObject>> m_bufferObjects;
-                IndexGenerator<Uint> m_indexGenerator;
-                Array<BindingSlot<BufferObject>, GlobalBufferTargets.size()> m_bindingSlots;
-                // TODO: query the count somewhere globally?
-                // For glBindBufferBase / glBindBufferRange
-                Array<Array<BindingSlotRange1D<BufferObject>, 16>, BufferBindPointTargets.size()>
-                    m_bufferBindPointTargets;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    private:
+        UnorderedMap<Uint, SharedPtr<BufferObject>> m_bufferObjects;
+        IndexGenerator<Uint> m_indexGenerator;
+        Array<BindingSlot<BufferObject>, GlobalBufferTargets.size()> m_bindingSlots;
+        // TODO: query the count somewhere globally?
+        // For glBindBufferBase / glBindBufferRange
+        Array<Array<BindingSlotRange1D<BufferObject>, 16>, BufferBindPointTargets.size()> m_bufferBindPointTargets;
+    };
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/Core.cpp

@@ -10,436 +10,436 @@
 #include "MG_State/GLState/RenderbufferState/RenderbufferObject.h"
 #include "MG_State/EGLState/Core.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        void Init() {
-            MGLOG_D("Initializing MobileGL State...");
-            pGLContext = new MG_State::GLState::GLContext();
-            pEGLContext = new MG_State::EGLState::EGLContext();
+namespace MobileGL::MG_State {
+    void Init() {
+        MGLOG_D("Initializing MobileGL State...");
+        pGLContext = MakeUnique<GLState::GLContext>();
+        pEGLContext = MakeUnique<EGLState::EGLContext>();
+    }
+
+    namespace GLState {
+        // Error
+        void GLContext::RecordError(ErrorCode code, UniquePtr<ErrorInfo> info) {
+            m_errorState.RecordError(code, Move(info));
         }
 
-        namespace GLState {
-            // Error
-            void GLContext::RecordError(ErrorCode code, SharedPtr<ErrorInfo> info) {
-                m_errorState.RecordError(code, info);
+        Bool GLContext::HasGLError() const {
+            return m_errorState.HasGLError();
+        }
+
+        Optional<const Error*> GLContext::PeekGLError() const {
+            return m_errorState.PeekGLError();
+        }
+
+        Optional<UniquePtr<Error>> GLContext::PopGLError() {
+            return Move(m_errorState.PopGLError());
+        }
+
+        Bool GLContext::HasNonGLError() const {
+            return m_errorState.HasNonGLError();
+        }
+
+        Optional<const Error*> GLContext::PeekNonGLError() const {
+            return m_errorState.PeekNonGLError();
+        }
+
+        Optional<UniquePtr<Error>> GLContext::PopNonGLError() {
+            return Move(m_errorState.PopNonGLError());
+        }
+
+        void GLContext::ClearErrors() {
+            m_errorState.Clear();
+        }
+
+        // Buffer
+        void GLContext::GenBufferNames(Uint number, Vector<Uint>& buffers) {
+            m_bufferState.GenerateNames(number, buffers);
+        }
+
+        const SharedPtr<BufferObject>& GLContext::GetBufferObject(Uint index) {
+            return m_bufferState.GetBufferObject(index);
+        }
+
+        BindingSlot<BufferObject>& GLContext::GetBufferBindingSlot(BufferTarget target) {
+            if (target == BufferTarget::Index) {
+                const auto& vao = m_vertexArrayState.GetBoundVertexArray();
+                MOBILEGL_ASSERT(vao != nullptr, "No VAO is currently bound when accessing index buffer binding slot.");
+                return vao->GetIndexBufferBindingSlot();
             }
 
-            Bool GLContext::HasGLError() const {
-                return m_errorState.HasGLError();
-            }
+            return m_bufferState.GetBindingSlot(target);
+        }
 
-            Optional<const Error> GLContext::PeekGLError() const {
-                return m_errorState.PeekGLError();
-            }
+        BindingSlotRange1D<BufferObject>& GLContext::GetBufferBindingPoint(BufferTarget target, Uint index) {
+            return m_bufferState.GetBindingPoint(target, index);
+        }
 
-            Optional<Error> GLContext::PopGLError() {
-                return m_errorState.PopGLError();
-            }
+        const SharedPtr<BufferObject>& GLContext::CreateBufferObject(Uint index) {
+            return m_bufferState.CreateBufferObject(index);
+        }
 
-            Bool GLContext::HasNonGLError() const {
-                return m_errorState.HasNonGLError();
-            }
+        void GLContext::MarkBufferObjectForDeletion(Uint index) {
+            if (ValidateBufferObject(index)) {
+                auto bufferObject = m_bufferState.GetBufferObject(index);
+                auto& vaos = m_vertexArrayState.GetAllVertexArrays();
+                for (auto& vao : vaos) {
+                    if (vao == nullptr) continue;
 
-            Optional<const Error> GLContext::PeekNonGLError() const {
-                return m_errorState.PeekNonGLError();
-            }
-
-            Optional<Error> GLContext::PopNonGLError() {
-                return m_errorState.PopNonGLError();
-            }
-
-            void GLContext::ClearErrors() {
-                m_errorState.Clear();
-            }
-
-            // Buffer
-            Vector<Uint> GLContext::GenBufferNames(Uint number) {
-                return m_bufferState.GenerateNames(number);
-            }
-
-            SharedPtr<BufferObject> GLContext::GetBufferObject(Uint index) {
-                return m_bufferState.GetBufferObject(index);
-            }
-
-            BindingSlot<BufferObject>& GLContext::GetBufferBindingSlot(BufferTarget target) {
-                if (target == BufferTarget::Index) {
-                    const auto& vao = m_vertexArrayState.GetBoundVertexArray();
-                    MOBILEGL_ASSERT(vao != nullptr,
-                                    "No VAO is currently bound when accessing index buffer binding slot.");
-                    return vao->GetIndexBufferBindingSlot();
-                }
-
-                return m_bufferState.GetBindingSlot(target);
-            }
-
-            BindingSlotRange1D<BufferObject>& GLContext::GetBufferBindingPoint(BufferTarget target, Uint index) {
-                return m_bufferState.GetBindingPoint(target, index);
-            }
-
-            SharedPtr<BufferObject> GLContext::CreateBufferObject(Uint index) {
-                return m_bufferState.CreateBufferObject(index);
-            }
-
-            void GLContext::MarkBufferObjectForDeletion(Uint index) {
-                if (ValidateBufferObject(index)) {
-                    auto bufferObject = m_bufferState.GetBufferObject(index);
-                    auto& vaos = m_vertexArrayState.GetAllVertexArrays();
-                    for (SizeT i = 0; i < vaos.size(); ++i) {
-                        auto vao = vaos[i];
-                        if (vao == nullptr) continue;
-
-                        if (vao->GetIndexBufferBindingSlot().GetBoundObject() == bufferObject) {
-                            vao->GetIndexBufferBindingSlot().Bind(nullptr);
-                        }
-                        for (SizeT j = 0; j < VertexArrayObject::MAX_VERTEX_ATTRIBS; ++j) {
-                            if (vao->GetAttribute(j).Buffer == bufferObject) {
-                                vao->BindAttributeBuffer(j, nullptr);
-                            }
+                    if (vao->GetIndexBufferBindingSlot().GetBoundObject() == bufferObject) {
+                        vao->GetIndexBufferBindingSlot().Bind(nullptr);
+                    }
+                    for (SizeT j = 0; j < VertexArrayObject::MAX_VERTEX_ATTRIBS; ++j) {
+                        if (vao->GetAttribute(j).Buffer == bufferObject) {
+                            vao->BindAttributeBuffer(j, nullptr);
                         }
                     }
                 }
-
-                m_bufferState.MarkBufferObjectForDeletion(index);
             }
 
-            Bool GLContext::ValidateBufferName(Uint index) const {
-                return m_bufferState.ValidateName(index);
-            }
+            m_bufferState.MarkBufferObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateBufferObject(Uint index) const {
-                return m_bufferState.ValidateBufferObject(index);
-            }
+        Bool GLContext::ValidateBufferName(Uint index) const {
+            return m_bufferState.ValidateName(index);
+        }
 
-            // VertexArray
-            Vector<Uint> GLContext::GenVertexArrayNames(Uint number) {
-                return m_vertexArrayState.GenerateNames(number);
-            }
+        Bool GLContext::ValidateBufferObject(Uint index) const {
+            return m_bufferState.ValidateBufferObject(index);
+        }
 
-            SharedPtr<VertexArrayObject> GLContext::GetVertexArrayObject(Uint index) {
-                return m_vertexArrayState.GetVertexArrayObject(index);
-            }
+        // VertexArray
+        void GLContext::GenVertexArrayNames(Uint number, Vector<Uint>& vertexArrays) {
+            m_vertexArrayState.GenerateNames(number, vertexArrays);
+        }
 
-            void GLContext::BindVertexArray(Uint index) {
-                m_vertexArrayState.Bind(index);
-            }
+        const SharedPtr<VertexArrayObject>& GLContext::GetVertexArrayObject(Uint index) {
+            return m_vertexArrayState.GetVertexArrayObject(index);
+        }
 
-            SharedPtr<VertexArrayObject> GLContext::CreateVertexArrayObject(Uint index) {
-                return m_vertexArrayState.CreateVertexArrayObject(index);
-            }
+        void GLContext::BindVertexArray(Uint index) {
+            m_vertexArrayState.Bind(index);
+        }
 
-            void GLContext::MarkVertexArrayForDeletion(Uint index) {
-                m_vertexArrayState.MarkVertexArrayForDeletion(index);
-            }
+        const SharedPtr<VertexArrayObject>& GLContext::CreateVertexArrayObject(Uint index) {
+            return m_vertexArrayState.CreateVertexArrayObject(index);
+        }
 
-            Bool GLContext::ValidateVertexArrayName(Uint index) const {
-                return m_vertexArrayState.ValidateName(index);
-            }
+        void GLContext::MarkVertexArrayForDeletion(Uint index) {
+            m_vertexArrayState.MarkVertexArrayForDeletion(index);
+        }
 
-            Bool GLContext::ValidateVertexArrayObject(Uint index) const {
-                return m_vertexArrayState.ValidateVertexArrayObject(index);
-            }
+        Bool GLContext::ValidateVertexArrayName(Uint index) const {
+            return m_vertexArrayState.ValidateName(index);
+        }
 
-            SharedPtr<VertexArrayObject> GLContext::GetBoundVertexArray() {
-                return m_vertexArrayState.GetBoundVertexArray();
-            }
+        Bool GLContext::ValidateVertexArrayObject(Uint index) const {
+            return m_vertexArrayState.ValidateVertexArrayObject(index);
+        }
 
-            // Texture
-            Vector<Uint> GLContext::GenTextureNames(Uint number) {
-                return m_textureState.GenerateNames(number);
-            }
+        const SharedPtr<VertexArrayObject>& GLContext::GetBoundVertexArray() {
+            return m_vertexArrayState.GetBoundVertexArray();
+        }
 
-            SharedPtr<ITextureObject> GLContext::GetTextureObject(Uint index) {
-                return m_textureState.GetTextureObject(index);
-            }
+        // Texture
+        void GLContext::GenTextureNames(Uint number, Vector<Uint>& textures) {
+            m_textureState.GenerateNames(number, textures);
+        }
 
-            SharedPtr<ITextureObject> GLContext::CreateTextureObject(Uint index, TextureTarget target) {
-                return m_textureState.CreateTextureObject(index, target);
-            }
+        const SharedPtr<ITextureObject>& GLContext::GetTextureObject(Uint index) {
+            return m_textureState.GetTextureObject(index);
+        }
 
-            void GLContext::MarkTextureObjectForDeletion(Uint index) {
-                m_textureState.MarkTextureObjectForDeletion(index);
-            }
+        const SharedPtr<ITextureObject>& GLContext::CreateTextureObject(Uint index, TextureTarget target) {
+            return m_textureState.CreateTextureObject(index, target);
+        }
 
-            TextureUnit& GLContext::GetTextureUnitObject(Int unit) {
-                return m_textureState.GetUnitObject(unit);
-            }
+        void GLContext::MarkTextureObjectForDeletion(Uint index) {
+            m_textureState.MarkTextureObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateTextureName(Uint index) const {
-                return m_textureState.ValidateName(index);
-            }
+        TextureUnit& GLContext::GetTextureUnitObject(Int unit) {
+            return m_textureState.GetUnitObject(unit);
+        }
 
-            Bool GLContext::ValidateTextureObject(Uint index) const {
-                return m_textureState.ValidateTextureObject(index);
-            }
+        Bool GLContext::ValidateTextureName(Uint index) const {
+            return m_textureState.ValidateName(index);
+        }
 
-            Int GLContext::GetActiveTextureUnit() const {
-                return m_textureState.GetActiveTextureUnit();
-            }
+        Bool GLContext::ValidateTextureObject(Uint index) const {
+            return m_textureState.ValidateTextureObject(index);
+        }
 
-            void GLContext::SetActiveTextureUnit(Int unit) {
-                m_textureState.SetActiveTextureUnit(unit);
-            }
+        Int GLContext::GetActiveTextureUnit() const {
+            return m_textureState.GetActiveTextureUnit();
+        }
 
-            // Program
-            Uint GLContext::CreateProgram() {
-                return m_programState.CreateProgram();
-            }
+        void GLContext::SetActiveTextureUnit(Int unit) {
+            m_textureState.SetActiveTextureUnit(unit);
+        }
 
-            Uint GLContext::CreateShader(const ShaderStage stage) {
-                return m_programState.CreateShader(stage);
-            }
+        // Program
+        Uint GLContext::CreateProgram() {
+            return m_programState.CreateProgram();
+        }
 
-            void GLContext::MarkProgramForDeletion(const Uint index) {
-                return m_programState.MarkProgramObjectForDeletion(index);
-            }
+        Uint GLContext::CreateShader(const ShaderStage stage) {
+            return m_programState.CreateShader(stage);
+        }
 
-            void GLContext::MarkShaderForDeletion(const Uint index) {
-                return m_programState.MarkShaderObjectForDeletion(index);
-            }
+        void GLContext::MarkProgramForDeletion(const Uint index) {
+            return m_programState.MarkProgramObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateProgramName(const Uint index) const {
-                return m_programState.ValidateProgramObject(index);
-            }
+        void GLContext::MarkShaderForDeletion(const Uint index) {
+            return m_programState.MarkShaderObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateShaderName(const Uint index) const {
-                return m_programState.ValidateShaderObject(index);
-            }
+        Bool GLContext::ValidateProgramName(const Uint index) const {
+            return m_programState.ValidateProgramObject(index);
+        }
 
-            SharedPtr<ProgramObject> GLContext::GetProgramObject(const Uint index) {
-                return m_programState.GetProgramObject(index);
-            }
+        Bool GLContext::ValidateShaderName(const Uint index) const {
+            return m_programState.ValidateShaderObject(index);
+        }
 
-            SharedPtr<ShaderObject> GLContext::GetShaderObject(const Uint index) {
-                return m_programState.GetShaderObject(index);
-            }
+        const SharedPtr<ProgramObject>& GLContext::GetProgramObject(const Uint index) {
+            return m_programState.GetProgramObject(index);
+        }
 
-            void GLContext::UseProgram(Uint program) {
-                return m_programState.UseProgram(program);
-            }
+        const SharedPtr<ShaderObject>& GLContext::GetShaderObject(const Uint index) {
+            return m_programState.GetShaderObject(index);
+        }
 
-            SharedPtr<ProgramObject> GLContext::GetCurrentProgram() {
-                return m_programState.GetCurrentProgram();
-            }
+        void GLContext::UseProgram(Uint program) {
+            return m_programState.UseProgram(program);
+        }
 
-            // RenderState
-            Uint GLContext::GetRenderStateParametersVersion() const {
-                return m_renderState.GetVersion();
-            }
+        const SharedPtr<ProgramObject>& GLContext::GetCurrentProgram() {
+            return m_programState.GetCurrentProgram();
+        }
 
-            const RenderStateParameters& GLContext::GetRenderStateParameters() const {
-                return m_renderState.GetAllParameters();
-            }
+        // RenderState
+        Uint GLContext::GetRenderStateParametersVersion() const {
+            return m_renderState.GetVersion();
+        }
 
-            void GLContext::SetViewport(IntVec4 viewport) {
-                m_renderState.SetViewport(viewport);
-            }
+        const RenderStateParameters& GLContext::GetRenderStateParameters() const {
+            return m_renderState.GetAllParameters();
+        }
 
-            const IntVec4& GLContext::GetViewport() const {
-                return m_renderState.GetViewport();
-            }
+        void GLContext::SetViewport(IntVec4 viewport) {
+            m_renderState.SetViewport(viewport);
+        }
 
-            void GLContext::SetCapability(CapabilityInput cap, Bool enabled) {
-                m_renderState.SetCapability(cap, enabled);
-            }
+        const IntVec4& GLContext::GetViewport() const {
+            return m_renderState.GetViewport();
+        }
 
-            Bool GLContext::IsCapabilityEnabled(CapabilityInput cap) const {
-                return m_renderState.IsCapabilityEnabled(cap);
-            }
+        void GLContext::SetCapability(CapabilityInput cap, Bool enabled) {
+            m_renderState.SetCapability(cap, enabled);
+        }
 
-            void GLContext::SetCapabilityIndexed(CapabilityInput cap, Uint index, Bool enabled) {
-                m_renderState.SetCapabilityIndexed(cap, index, enabled);
-            }
+        Bool GLContext::IsCapabilityEnabled(CapabilityInput cap) const {
+            return m_renderState.IsCapabilityEnabled(cap);
+        }
 
-            Bool GLContext::IsCapabilityEnabledIndexed(CapabilityInput cap, Uint index) const {
-                return m_renderState.IsCapabilityEnabledIndexed(cap, index);
-            }
+        void GLContext::SetCapabilityIndexed(CapabilityInput cap, Uint index, Bool enabled) {
+            m_renderState.SetCapabilityIndexed(cap, index, enabled);
+        }
 
-            void GLContext::SetBlendFunc(BlendFactor srcRGB, BlendFactor dstRGB, BlendFactor srcAlpha,
-                                         BlendFactor dstAlpha) {
-                m_renderState.SetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
-            }
+        Bool GLContext::IsCapabilityEnabledIndexed(CapabilityInput cap, Uint index) const {
+            return m_renderState.IsCapabilityEnabledIndexed(cap, index);
+        }
 
-            void GLContext::GetBlendFunc(BlendFactor& srcRGB, BlendFactor& dstRGB, BlendFactor& srcAlpha,
-                                         BlendFactor& dstAlpha) const {
-                m_renderState.GetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
-            }
+        void GLContext::SetBlendFunc(BlendFactor srcRGB, BlendFactor dstRGB, BlendFactor srcAlpha,
+                                     BlendFactor dstAlpha) {
+            m_renderState.SetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
+        }
 
-            void GLContext::SetBlendFuncIndexed(Uint index, BlendFactor srcRGB, BlendFactor dstRGB,
-                                                BlendFactor srcAlpha, BlendFactor dstAlpha) {
-                m_renderState.SetBlendFuncIndexed(index, srcRGB, dstRGB, srcAlpha, dstAlpha);
-            }
+        void GLContext::GetBlendFunc(BlendFactor& srcRGB, BlendFactor& dstRGB, BlendFactor& srcAlpha,
+                                     BlendFactor& dstAlpha) const {
+            m_renderState.GetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
+        }
 
-            void GLContext::GetBlendFuncIndexed(Uint index, BlendFactor& srcRGB, BlendFactor& dstRGB,
-                                                BlendFactor& srcAlpha, BlendFactor& dstAlpha) const {
-                m_renderState.GetBlendFuncIndexed(index, srcRGB, dstRGB, srcAlpha, dstAlpha);
-            }
+        void GLContext::SetBlendFuncIndexed(Uint index, BlendFactor srcRGB, BlendFactor dstRGB, BlendFactor srcAlpha,
+                                            BlendFactor dstAlpha) {
+            m_renderState.SetBlendFuncIndexed(index, srcRGB, dstRGB, srcAlpha, dstAlpha);
+        }
 
-            void GLContext::SetDepthFunc(DepthTestFunc func) {
-                m_renderState.SetDepthFunc(func);
-            }
+        void GLContext::GetBlendFuncIndexed(Uint index, BlendFactor& srcRGB, BlendFactor& dstRGB, BlendFactor& srcAlpha,
+                                            BlendFactor& dstAlpha) const {
+            m_renderState.GetBlendFuncIndexed(index, srcRGB, dstRGB, srcAlpha, dstAlpha);
+        }
 
-            DepthTestFunc GLContext::GetDepthFunc() const {
-                return m_renderState.GetDepthFunc();
-            }
+        void GLContext::SetDepthFunc(DepthTestFunc func) {
+            m_renderState.SetDepthFunc(func);
+        }
 
-            void GLContext::SetDepthMask(Bool flag) {
-                m_renderState.SetDepthMask(flag);
-            }
+        DepthTestFunc GLContext::GetDepthFunc() const {
+            return m_renderState.GetDepthFunc();
+        }
 
-            Bool GLContext::GetDepthMask() const {
-                return m_renderState.GetDepthMask();
-            }
+        void GLContext::SetDepthMask(Bool flag) {
+            m_renderState.SetDepthMask(flag);
+        }
 
-            void GLContext::SetColorMask(BoolVec4 mask) {
-                m_renderState.SetColorMask(mask);
-            }
+        Bool GLContext::GetDepthMask() const {
+            return m_renderState.GetDepthMask();
+        }
 
-            const BoolVec4 GLContext::GetColorMask() const {
-                return m_renderState.GetColorMask();
-            }
+        void GLContext::SetColorMask(BoolVec4 mask) {
+            m_renderState.SetColorMask(mask);
+        }
 
-            void GLContext::SetClearColor(FloatVec4 color) {
-                m_renderState.SetClearColor(color);
-            }
+        BoolVec4 GLContext::GetColorMask() const {
+            return m_renderState.GetColorMask();
+        }
 
-            const FloatVec4& GLContext::GetClearColor() const {
-                return m_renderState.GetClearColor();
-            }
+        void GLContext::SetClearColor(FloatVec4 color) {
+            m_renderState.SetClearColor(color);
+        }
 
-            void GLContext::SetClearDepth(Float depth) {
-                m_renderState.SetClearDepth(depth);
-            }
+        const FloatVec4& GLContext::GetClearColor() const {
+            return m_renderState.GetClearColor();
+        }
 
-            Float GLContext::GetClearDepth() const {
-                return m_renderState.GetClearDepth();
-            }
+        void GLContext::SetClearDepth(Float depth) {
+            m_renderState.SetClearDepth(depth);
+        }
 
-            void GLContext::SetClearStencil(Int stencil) {
-                m_renderState.SetClearStencil(stencil);
-            }
+        Float GLContext::GetClearDepth() const {
+            return m_renderState.GetClearDepth();
+        }
 
-            Int GLContext::GetClearStencil() const {
+        void GLContext::SetClearStencil(Int stencil) {
+            m_renderState.SetClearStencil(stencil);
+        }
+
+            Uint32 GLContext::GetClearStencil() const {
                 return m_renderState.GetClearStencil();
             }
 
-            void GLContext::SetPixelStoreParam(PixelStoreParam param, Int value) {
-                m_renderState.SetPixelStoreParam(param, value);
-            }
+        void GLContext::SetPixelStoreParam(PixelStoreParam param, Int value) {
+            m_renderState.SetPixelStoreParam(param, value);
+        }
 
-            Int GLContext::GetPixelStoreParam(PixelStoreParam param) const {
-                return m_renderState.GetPixelStoreParam(param);
-            }
+        Int GLContext::GetPixelStoreParam(PixelStoreParam param) const {
+            return m_renderState.GetPixelStoreParam(param);
+        }
 
-            PixelStoreParameters GLContext::GetPixelStoreParameters(Bool isUnpack) const {
-                return m_renderState.GetPixelStoreParameters(isUnpack);
-            }
+        PixelStoreParameters GLContext::GetPixelStoreParameters(Bool isUnpack) const {
+            return m_renderState.GetPixelStoreParameters(isUnpack);
+        }
 
-            void GLContext::SetCullFaceMode(CullFaceMode mode) {
-                m_renderState.SetCullFaceMode(mode);
-            }
+        void GLContext::SetCullFaceMode(CullFaceMode mode) {
+            m_renderState.SetCullFaceMode(mode);
+        }
 
-            CullFaceMode GLContext::GetCullFaceMode() const {
-                return m_renderState.GetCullFaceMode();
-            }
+        CullFaceMode GLContext::GetCullFaceMode() const {
+            return m_renderState.GetCullFaceMode();
+        }
 
-            void GLContext::SetScissorBox(IntVec4 box) {
-                m_renderState.SetScissorBox(box);
-            }
+        void GLContext::SetScissorBox(IntVec4 box) {
+            m_renderState.SetScissorBox(box);
+        }
 
-            const IntVec4& GLContext::GetScissorBox() const {
-                return m_renderState.GetScissorBox();
-            }
+        const IntVec4& GLContext::GetScissorBox() const {
+            return m_renderState.GetScissorBox();
+        }
 
-            // Framebuffer
-            Vector<Uint> GLContext::GenFramebufferNames(Uint number) {
-                return m_framebufferState.GenerateNames(number);
-            }
+        // Framebuffer
+        void GLContext::GenFramebufferNames(Uint number, Vector<Uint>& framebuffers) {
+            m_framebufferState.GenerateNames(number, framebuffers);
+        }
 
-            SharedPtr<FramebufferObject> GLContext::GetFramebufferObject(Uint index) {
-                return m_framebufferState.GetFramebufferObject(index);
-            }
+        const SharedPtr<FramebufferObject>& GLContext::GetFramebufferObject(Uint index) {
+            return m_framebufferState.GetFramebufferObject(index);
+        }
 
-            BindingSlot<FramebufferObject>& GLContext::GetFramebufferBindingSlot(FramebufferTarget target) {
-                return m_framebufferState.GetBindingSlot(target);
-            }
+        BindingSlot<FramebufferObject>& GLContext::GetFramebufferBindingSlot(FramebufferTarget target) {
+            return m_framebufferState.GetBindingSlot(target);
+        }
 
-            SharedPtr<FramebufferObject> GLContext::CreateFramebufferObject(Uint index) {
-                return m_framebufferState.CreateFramebufferObject(index);
-            }
+        const SharedPtr<FramebufferObject>& GLContext::CreateFramebufferObject(Uint index) {
+            return m_framebufferState.CreateFramebufferObject(index);
+        }
 
-            void GLContext::MarkFramebufferObjectForDeletion(Uint index) {
-                m_framebufferState.MarkFramebufferObjectForDeletion(index);
-            }
+        void GLContext::MarkFramebufferObjectForDeletion(Uint index) {
+            m_framebufferState.MarkFramebufferObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateFramebufferName(Uint index) const {
-                return m_framebufferState.ValidateName(index);
-            }
+        Bool GLContext::ValidateFramebufferName(Uint index) const {
+            return m_framebufferState.ValidateName(index);
+        }
 
-            Bool GLContext::ValidateFramebufferObject(Uint index) const {
-                return m_framebufferState.ValidateFramebufferObject(index);
-            }
+        Bool GLContext::ValidateFramebufferObject(Uint index) const {
+            return m_framebufferState.ValidateFramebufferObject(index);
+        }
 
-            // Sampler
-            Vector<Uint> GLContext::GenSamplerNames(Uint number) {
-                return m_samplerState.GenerateNames(number);
-            }
+        // Sampler
+        void GLContext::GenSamplerNames(Uint number, Vector<Uint>& samplers) {
+            m_samplerState.GenerateNames(number, samplers);
+        }
 
-            SharedPtr<SamplerObject> GLContext::GetSamplerObject(Uint index) {
-                return m_samplerState.GetSamplerObject(index);
-            }
+        const SharedPtr<SamplerObject>& GLContext::GetSamplerObject(Uint index) {
+            return m_samplerState.GetSamplerObject(index);
+        }
 
-            SharedPtr<SamplerObject> GLContext::CreateSamplerObject(Uint index) {
-                return m_samplerState.CreateSamplerObject(index);
-            }
+        const SharedPtr<SamplerObject>& GLContext::CreateSamplerObject(Uint index) {
+            return m_samplerState.CreateSamplerObject(index);
+        }
 
-            void GLContext::MarkSamplerObjectForDeletion(Uint index) {
-                // Unbind the sampler from all texture units
-                if (ValidateSamplerObject(index)) {
-                    auto sampler = m_samplerState.GetSamplerObject(index);
-                    for (Int unit = 0; unit < TextureState::MAX_TEXTURE_IMAGE_UNITS; ++unit) {
-                        auto& textureUnit = m_textureState.GetUnitObject(unit);
-                        if (textureUnit.GetSamplerObject() == sampler) {
-                            textureUnit.SetSamplerObject(nullptr);
-                        }
+        void GLContext::MarkSamplerObjectForDeletion(Uint index) {
+            // Unbind the sampler from all texture units
+            if (ValidateSamplerObject(index)) {
+                auto sampler = m_samplerState.GetSamplerObject(index);
+                for (Int unit = 0; unit < TextureState::MAX_TEXTURE_IMAGE_UNITS; ++unit) {
+                    auto& textureUnit = m_textureState.GetUnitObject(unit);
+                    if (textureUnit.GetSamplerObject() == sampler) {
+                        textureUnit.SetSamplerObject(nullptr);
                     }
                 }
-                m_samplerState.MarkSamplerObjectForDeletion(index);
             }
+            m_samplerState.MarkSamplerObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateSamplerName(Uint index) const {
-                return m_samplerState.ValidateName(index);
-            }
+        Bool GLContext::ValidateSamplerName(Uint index) const {
+            return m_samplerState.ValidateName(index);
+        }
 
-            Bool GLContext::ValidateSamplerObject(Uint index) const {
-                return m_samplerState.ValidateSamplerObject(index);
-            }
+        Bool GLContext::ValidateSamplerObject(Uint index) const {
+            return m_samplerState.ValidateSamplerObject(index);
+        }
 
-            // Renderbuffer
-            Vector<Uint> GLContext::GenRenderbufferNames(Uint number) {
-                return m_renderbufferState.GenerateNames(number);
-            }
+        // Renderbuffer
+        void GLContext::GenRenderbufferNames(Uint number, Vector<Uint>& renderbuffers) {
+            m_renderbufferState.GenerateNames(number, renderbuffers);
+        }
 
-            SharedPtr<RenderbufferObject> GLContext::GetRenderbufferObject(Uint index) {
-                return m_renderbufferState.GetRenderbufferObject(index);
-            }
+        const SharedPtr<RenderbufferObject>& GLContext::GetRenderbufferObject(Uint index) {
+            return m_renderbufferState.GetRenderbufferObject(index);
+        }
 
-            BindingSlot<RenderbufferObject>& GLContext::GetRenderbufferBindingSlot(RenderbufferTarget target) {
-                return m_renderbufferState.GetBindingSlot(target);
-            }
+        BindingSlot<RenderbufferObject>& GLContext::GetRenderbufferBindingSlot(RenderbufferTarget target) {
+            return m_renderbufferState.GetBindingSlot(target);
+        }
 
-            SharedPtr<RenderbufferObject> GLContext::CreateRenderbufferObject(Uint index) {
-                return m_renderbufferState.CreateRenderbufferObject(index);
-            }
+        const SharedPtr<RenderbufferObject>& GLContext::CreateRenderbufferObject(Uint index) {
+            return m_renderbufferState.CreateRenderbufferObject(index);
+        }
 
-            void GLContext::MarkRenderbufferObjectForDeletion(Uint index) {
-                m_renderbufferState.MarkRenderbufferObjectForDeletion(index);
-            }
+        void GLContext::MarkRenderbufferObjectForDeletion(Uint index) {
+            m_renderbufferState.MarkRenderbufferObjectForDeletion(index);
+        }
 
-            Bool GLContext::ValidateRenderbufferName(Uint index) const {
-                return m_renderbufferState.ValidateName(index);
-            }
-        } // namespace GLState
+        Bool GLContext::ValidateRenderbufferName(Uint index) const {
+            return m_renderbufferState.ValidateName(index);
+        }
 
-        GLState::GLContext* pGLContext;
-    } // namespace MG_State
-} // namespace MobileGL
+        Bool GLContext::ValidateRenderbufferObject(Uint index) const {
+            return m_renderbufferState.ValidateRenderbufferObject(index);
+        }
+    } // namespace GLState
+
+    UniquePtr<GLState::GLContext> pGLContext;
+} // namespace MobileGL::MG_State

MobileGL/MG_State/GLState/Core.h

@@ -30,42 +30,42 @@ namespace MobileGL {
                 GLContext() = default;
 
                 // Error
-                void RecordError(ErrorCode code, SharedPtr<ErrorInfo> info = nullptr);
+                void RecordError(ErrorCode code, UniquePtr<ErrorInfo> info);
                 Bool HasGLError() const;
-                Optional<const Error> PeekGLError() const;
-                Optional<Error> PopGLError();
+                Optional<const Error*> PeekNonGLError() const;
+                Optional<UniquePtr<Error>> PopNonGLError();
                 Bool HasNonGLError() const;
-                Optional<const Error> PeekNonGLError() const;
-                Optional<Error> PopNonGLError();
+                Optional<const Error*> PeekGLError() const;
+                Optional<UniquePtr<Error>> PopGLError();
                 void ClearErrors();
 
                 // Buffer
-                Vector<Uint> GenBufferNames(Uint number);
-                SharedPtr<BufferObject> GetBufferObject(Uint index);
+                void GenBufferNames(Uint number, Vector<Uint>& buffers);
+                const SharedPtr<BufferObject>& GetBufferObject(Uint index);
                 BindingSlot<BufferObject>& GetBufferBindingSlot(BufferTarget target);
                 BindingSlotRange1D<BufferObject>& GetBufferBindingPoint(BufferTarget target, Uint index);
                 constexpr SizeT GetBufferBindingPointCount(BufferTarget target) const {
                     return m_bufferState.GetBindingPointCount(target);
                 }
-                SharedPtr<BufferObject> CreateBufferObject(Uint index);
+                const SharedPtr<BufferObject>& CreateBufferObject(Uint index);
                 void MarkBufferObjectForDeletion(Uint index);
                 Bool ValidateBufferName(Uint index) const;
                 Bool ValidateBufferObject(Uint index) const;
 
                 // VertexArray
-                Vector<Uint> GenVertexArrayNames(Uint number);
-                SharedPtr<VertexArrayObject> GetVertexArrayObject(Uint index);
+                void GenVertexArrayNames(Uint number, Vector<Uint>& vertexArrays);
+                const SharedPtr<VertexArrayObject>& GetVertexArrayObject(Uint index);
                 void BindVertexArray(Uint index);
-                SharedPtr<VertexArrayObject> CreateVertexArrayObject(Uint index);
+                const SharedPtr<VertexArrayObject>& CreateVertexArrayObject(Uint index);
                 void MarkVertexArrayForDeletion(Uint index);
                 Bool ValidateVertexArrayName(Uint index) const;
                 Bool ValidateVertexArrayObject(Uint index) const;
-                SharedPtr<VertexArrayObject> GetBoundVertexArray();
+                const SharedPtr<VertexArrayObject>& GetBoundVertexArray();
 
                 // Texture
-                Vector<Uint> GenTextureNames(Uint number);
-                SharedPtr<ITextureObject> GetTextureObject(Uint index);
-                SharedPtr<ITextureObject> CreateTextureObject(Uint index, TextureTarget target);
+                void GenTextureNames(Uint number, Vector<Uint>& textures);
+                const SharedPtr<ITextureObject>& GetTextureObject(Uint index);
+                const SharedPtr<ITextureObject>& CreateTextureObject(Uint index, TextureTarget target);
                 void MarkTextureObjectForDeletion(Uint index);
                 TextureUnit& GetTextureUnitObject(Int unit);
                 Bool ValidateTextureName(Uint index) const;
@@ -80,10 +80,10 @@ namespace MobileGL {
                 void MarkShaderForDeletion(Uint index);
                 Bool ValidateProgramName(Uint index) const;
                 Bool ValidateShaderName(Uint index) const;
-                SharedPtr<ProgramObject> GetProgramObject(Uint index);
-                SharedPtr<ShaderObject> GetShaderObject(Uint index);
+                const SharedPtr<ProgramObject>& GetProgramObject(Uint index);
+                const SharedPtr<ShaderObject>& GetShaderObject(Uint index);
                 void UseProgram(Uint program);
-                SharedPtr<ProgramObject> GetCurrentProgram();
+                const SharedPtr<ProgramObject>& GetCurrentProgram();
 
                 // RenderState
                 Uint GetRenderStateParametersVersion() const;
@@ -106,13 +106,13 @@ namespace MobileGL {
                 void SetDepthMask(Bool flag);
                 Bool GetDepthMask() const;
                 void SetColorMask(BoolVec4 mask);
-                const BoolVec4 GetColorMask() const;
+                BoolVec4 GetColorMask() const;
                 void SetClearColor(FloatVec4 color);
                 const FloatVec4& GetClearColor() const;
                 void SetClearDepth(Float depth);
                 Float GetClearDepth() const;
                 void SetClearStencil(Int stencil);
-                Int GetClearStencil() const;
+                Uint32 GetClearStencil() const;
                 void SetPixelStoreParam(PixelStoreParam param, Int value);
                 Int GetPixelStoreParam(PixelStoreParam param) const;
                 PixelStoreParameters GetPixelStoreParameters(Bool isUnpack) const;
@@ -122,27 +122,27 @@ namespace MobileGL {
                 const IntVec4& GetScissorBox() const; // x, y, width, height
 
                 // Framebuffer
-                Vector<Uint> GenFramebufferNames(Uint number);
-                SharedPtr<FramebufferObject> GetFramebufferObject(Uint index);
+                void GenFramebufferNames(Uint number, Vector<Uint>& framebuffers);
+                const SharedPtr<FramebufferObject>& GetFramebufferObject(Uint index);
                 BindingSlot<FramebufferObject>& GetFramebufferBindingSlot(FramebufferTarget target);
-                SharedPtr<FramebufferObject> CreateFramebufferObject(Uint index);
+                const SharedPtr<FramebufferObject>& CreateFramebufferObject(Uint index);
                 void MarkFramebufferObjectForDeletion(Uint index);
                 Bool ValidateFramebufferName(Uint index) const;
                 Bool ValidateFramebufferObject(Uint index) const;
 
                 // Sampler
-                Vector<Uint> GenSamplerNames(Uint number);
-                SharedPtr<SamplerObject> GetSamplerObject(Uint index);
-                SharedPtr<SamplerObject> CreateSamplerObject(Uint index);
+                void GenSamplerNames(Uint number, Vector<Uint>& samplers);
+                const SharedPtr<SamplerObject>& GetSamplerObject(Uint index);
+                const SharedPtr<SamplerObject>& CreateSamplerObject(Uint index);
                 void MarkSamplerObjectForDeletion(Uint index);
                 Bool ValidateSamplerName(Uint index) const;
                 Bool ValidateSamplerObject(Uint index) const;
 
                 // Renderbuffer
-                Vector<Uint> GenRenderbufferNames(Uint number);
-                SharedPtr<RenderbufferObject> GetRenderbufferObject(Uint index);
+                void GenRenderbufferNames(Uint number, Vector<Uint>& renderbuffers);
+                const SharedPtr<RenderbufferObject>& GetRenderbufferObject(Uint index);
                 BindingSlot<RenderbufferObject>& GetRenderbufferBindingSlot(RenderbufferTarget target);
-                SharedPtr<RenderbufferObject> CreateRenderbufferObject(Uint index);
+                const SharedPtr<RenderbufferObject>& CreateRenderbufferObject(Uint index);
                 void MarkRenderbufferObjectForDeletion(Uint index);
                 Bool ValidateRenderbufferName(Uint index) const;
                 Bool ValidateRenderbufferObject(Uint index) const;
@@ -161,6 +161,6 @@ namespace MobileGL {
             };
         } // namespace GLState
 
-        extern GLState::GLContext* pGLContext;
+        extern UniquePtr<GLState::GLContext> pGLContext;
     } // namespace MG_State
 } // namespace MobileGL

MobileGL/MG_State/GLState/ErrorState/Error.cpp

@@ -10,57 +10,53 @@
 #include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
 #include <MG_Util/Converters/MGToGL/ErrorCodeConverter.h>
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            void ErrorState::RecordError(ErrorCode code, SharedPtr<ErrorInfo> info) {
-                if (code == ErrorCode::NoError) {
-                    MGLOG_E("Recording Non-OpenGL error:\n%s", info->ToString().c_str());
-                    m_nonGLErrors.push_back(Error{code, info});
-                } else {
-                    MGLOG_E("Recording OpenGL error (%s):\n%s",
-                            MG_Util::ConvertGLEnumToString(MG_Util::ConvertErrorCodeToGLEnum(code)).c_str(),
-                            info->ToString().c_str());
-                    m_errors.push_back(Error{code, info});
-                }
-            }
+namespace MobileGL::MG_State::GLState {
+    void ErrorState::RecordError(ErrorCode code, UniquePtr<ErrorInfo> info) {
+        if (code == ErrorCode::NoError) {
+            MGLOG_E("Recording Non-OpenGL error:\n%s", info->toString().c_str());
+            m_nonGLErrors.push_back(MakeUnique<Error>(code, Move(info)));
+        } else {
+            MGLOG_E("Recording OpenGL error (%s):\n%s",
+                    MG_Util::ConvertGLEnumToString(MG_Util::ConvertErrorCodeToGLEnum(code)).c_str(),
+                    info->toString().c_str());
+            m_errors.push_back(MakeUnique<Error>(code, Move(info)));
+        }
+    }
 
-            Bool ErrorState::HasNonGLError() const {
-                return !m_nonGLErrors.empty();
-            }
+    Bool ErrorState::HasNonGLError() const {
+        return !m_nonGLErrors.empty();
+    }
 
-            Optional<const Error> ErrorState::PeekNonGLError() const {
-                if (m_nonGLErrors.empty()) return Optional<const Error>{};
-                return Optional<const Error>{m_nonGLErrors.front()};
-            }
+    Optional<const Error*> ErrorState::PeekNonGLError() const {
+        if (m_nonGLErrors.empty()) return Nullopt;
+        return Optional<const Error*>{m_nonGLErrors.front().get()};
+    }
 
-            Optional<Error> ErrorState::PopNonGLError() {
-                if (m_nonGLErrors.empty()) return Optional<const Error>{};
-                auto error = Move(m_nonGLErrors.front());
-                m_nonGLErrors.erase(m_nonGLErrors.begin());
-                return Optional<const Error>{error};
-            }
+    Optional<UniquePtr<Error>> ErrorState::PopNonGLError() {
+        if (m_nonGLErrors.empty()) return Nullopt;
+        auto error = Move(m_nonGLErrors.front());
+        m_nonGLErrors.erase(m_nonGLErrors.begin());
+        return Move(error);
+    }
 
-            Bool ErrorState::HasGLError() const {
-                return !m_errors.empty();
-            }
+    Bool ErrorState::HasGLError() const {
+        return !m_errors.empty();
+    }
 
-            Optional<const Error> ErrorState::PeekGLError() const {
-                if (m_errors.empty()) return Optional<const Error>{};
-                return Optional<const Error>{m_errors.front()};
-            }
+    Optional<const Error*> ErrorState::PeekGLError() const {
+        if (m_errors.empty()) return Optional<const Error*>{};
+        return Optional<const Error*>{m_errors.front().get()};
+    }
 
-            Optional<Error> ErrorState::PopGLError() {
-                if (m_errors.empty()) return Optional<const Error>{};
-                auto error = Move(m_errors.front());
-                m_errors.erase(m_errors.begin());
-                return Optional<const Error>{error};
-            }
+    Optional<UniquePtr<Error>> ErrorState::PopGLError() {
+        if (m_errors.empty()) return Nullopt;
+        auto error = Move(m_errors.front());
+        m_errors.erase(m_errors.begin());
+        return Move(error);
+    }
 
-            void ErrorState::Clear() {
-                m_errors.clear();
-                m_nonGLErrors.clear();
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    void ErrorState::Clear() {
+        m_errors.clear();
+        m_nonGLErrors.clear();
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ErrorState/Error.h

@@ -14,26 +14,24 @@
 namespace MobileGL {
     struct Error {
         ErrorCode code;
-        SharedPtr<ErrorInfo> info;
+        UniquePtr<ErrorInfo> info;
     };
 
-    namespace MG_State {
-        namespace GLState {
-            class ErrorState {
-            public:
-                void RecordError(ErrorCode code, SharedPtr<ErrorInfo> info = nullptr);
-                Bool HasNonGLError() const;
-                Optional<const Error> PeekNonGLError() const;
-                Optional<Error> PopNonGLError();
-                Bool HasGLError() const;
-                Optional<const Error> PeekGLError() const;
-                Optional<Error> PopGLError();
-                void Clear();
+    namespace MG_State::GLState {
+        class ErrorState {
+        public:
+            void RecordError(ErrorCode code, UniquePtr<ErrorInfo> info);
+            Bool HasNonGLError() const;
+            Optional<const Error*> PeekNonGLError() const;
+            Optional<UniquePtr<Error>> PopNonGLError();
+            Bool HasGLError() const;
+            Optional<const Error*> PeekGLError() const;
+            Optional<UniquePtr<Error>> PopGLError();
+            void Clear();
 
-            private:
-                Vector<Error> m_errors;
-                Vector<Error> m_nonGLErrors;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+        private:
+            Vector<UniquePtr<Error>> m_errors;
+            Vector<UniquePtr<Error>> m_nonGLErrors;
+        };
+    } // namespace MG_State::GLState
+} // namespace MobileGL

MobileGL/MG_State/GLState/ErrorState/ErrorInfo.h

@@ -13,7 +13,7 @@ namespace MobileGL {
     class ErrorInfo {
     public:
         virtual ~ErrorInfo() = default;
-        virtual String ToString() const = 0;
+        virtual String toString() const = 0;
     };
 
     class GenericErrorInfo : public ErrorInfo {
@@ -24,7 +24,7 @@ namespace MobileGL {
         explicit GenericErrorInfo(String m_prefix, String m_prefix_2, String message)
             : m_message(Move(message)), m_prefix(Move(m_prefix)), m_prefix_2(Move(m_prefix_2)) {}
 
-        String ToString() const override {
+        String toString() const override {
             StringStream ss;
             if (m_prefix.has_value()) {
                 ss << "[" << m_prefix.value() << "] ";

MobileGL/MG_State/GLState/FramebufferState/FramebufferObject.cpp

@@ -9,157 +9,153 @@
 #include "FramebufferObject.h"
 #include "MG_Util/Types.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            // FramebufferAttachmentObject
-            FramebufferAttachmentObject::FramebufferAttachmentObject(
-                SharedPtr<MG_State::GLState::ITextureObject> texture, Int level)
-                : m_texture(texture), m_textureLevel(level) {}
-            FramebufferAttachmentObject::FramebufferAttachmentObject(SharedPtr<RenderbufferObject> renderbuffer)
-                : m_renderbuffer(renderbuffer) {}
-            FramebufferAttachmentObject::FramebufferAttachmentObject(Bool IsValid)
-                : m_texture(nullptr), m_renderbuffer(nullptr) {
-                m_isValid = IsValid;
-            }
+namespace MobileGL::MG_State::GLState {
+    // FramebufferAttachmentObject
+    FramebufferAttachmentObject::FramebufferAttachmentObject(
+        const SharedPtr<MG_State::GLState::ITextureObject>& texture, Int level)
+        : m_texture(texture), m_textureLevel(level) {}
+    FramebufferAttachmentObject::FramebufferAttachmentObject(const SharedPtr<RenderbufferObject>& renderbuffer)
+        : m_renderbuffer(renderbuffer) {}
+    FramebufferAttachmentObject::FramebufferAttachmentObject(Bool IsValid)
+        : m_texture(nullptr), m_renderbuffer(nullptr) {
+        m_isValid = IsValid;
+    }
 
-            Bool FramebufferAttachmentObject::IsTexture() const {
-                return m_texture != nullptr;
-            }
+    Bool FramebufferAttachmentObject::IsTexture() const {
+        return m_texture != nullptr;
+    }
 
-            Bool FramebufferAttachmentObject::IsRenderbuffer() const {
-                return m_renderbuffer != nullptr;
-            }
+    Bool FramebufferAttachmentObject::IsRenderbuffer() const {
+        return m_renderbuffer != nullptr;
+    }
 
-            Bool FramebufferAttachmentObject::IsEmpty() const {
-                return m_texture == nullptr && m_renderbuffer == nullptr;
-            }
+    Bool FramebufferAttachmentObject::IsEmpty() const {
+        return m_texture == nullptr && m_renderbuffer == nullptr;
+    }
 
-            SharedPtr<MG_State::GLState::ITextureObject> FramebufferAttachmentObject::GetTexture() const {
-                return m_texture;
-            }
+    const SharedPtr<MG_State::GLState::ITextureObject>& FramebufferAttachmentObject::GetTexture() const {
+        return m_texture;
+    }
 
-            SharedPtr<RenderbufferObject> FramebufferAttachmentObject::GetRenderbuffer() const {
-                return m_renderbuffer;
-            }
+    const SharedPtr<RenderbufferObject>& FramebufferAttachmentObject::GetRenderbuffer() const {
+        return m_renderbuffer;
+    }
 
-            Int FramebufferAttachmentObject::GetTextureLevel() const {
-                return m_textureLevel;
-            }
+    Int FramebufferAttachmentObject::GetTextureLevel() const {
+        return m_textureLevel;
+    }
 
-            Bool FramebufferAttachmentObject::IsComplete() const {
-                if (IsTexture()) {
-                    Bool complete = m_texture->IsComplete();
-                    return complete;
-                } else if (IsRenderbuffer()) {
-                    Bool complete = m_renderbuffer->IsAllocated();
-                    return complete;
-                }
+    Bool FramebufferAttachmentObject::IsComplete() const {
+        if (IsTexture()) {
+            Bool complete = m_texture->IsComplete();
+            return complete;
+        } else if (IsRenderbuffer()) {
+            Bool complete = m_renderbuffer->IsAllocated();
+            return complete;
+        }
 
+        return false;
+    }
+
+    IntVec3 FramebufferAttachmentObject::GetSize() const {
+        if (IsTexture()) {
+            // TODO: get correct upload target
+            MOBILEGL_ASSERT(nullptr != static_cast<MG_State::GLState::TextureObjectMipmap*>(m_texture.get()),
+                            "Texture object here should always be an object with mipmap");
+            auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(m_texture.get());
+            return textureMipmapObject->GetMipmapTexelSize(TextureUploadTarget::Texture2D, m_textureLevel);
+        } else if (IsRenderbuffer()) {
+            return {m_renderbuffer->GetWidth(), m_renderbuffer->GetHeight(), 1};
+        }
+        return {0, 0, 0};
+    }
+
+    Bool FramebufferAttachmentObject::IsValid() const {
+        return m_isValid;
+    }
+
+    // FramebufferObject
+    FramebufferObject::FramebufferObject(Uint externalIndex)
+        : m_externalIndex(externalIndex), m_attachmentVersions{}, m_drawBuffers{} {
+        m_attachmentObjects.fill(FramebufferAttachmentObject(false));
+        m_drawBuffers.fill(FramebufferAttachmentType::None);
+        m_drawBuffers[0] = FramebufferAttachmentType::Color0;
+        m_attachmentVersions.fill(0);
+    }
+
+    void FramebufferObject::AttachTexture(FramebufferAttachmentType type, const SharedPtr<ITextureObject>& texture,
+                                          int level) {
+        m_attachmentObjects[static_cast<SizeT>(type)] = FramebufferAttachmentObject(texture, level);
+        BumpAttachmentVersion(type);
+    }
+
+    void FramebufferObject::AttachRenderbuffer(FramebufferAttachmentType type,
+                                               const SharedPtr<RenderbufferObject>& renderbuffer) {
+        m_attachmentObjects[static_cast<SizeT>(type)] = FramebufferAttachmentObject(renderbuffer);
+        BumpAttachmentVersion(type);
+    }
+
+    void FramebufferObject::Detach(FramebufferAttachmentType type) {
+        m_attachmentObjects[static_cast<SizeT>(type)] = FramebufferAttachmentObject(false);
+        BumpAttachmentVersion(type);
+    }
+
+    const FramebufferAttachmentObject& FramebufferObject::GetAttachment(FramebufferAttachmentType type) const {
+        return m_attachmentObjects[static_cast<SizeT>(type)];
+    }
+
+    const FramebufferObject::FramebufferAttachmentObjectArray& FramebufferObject::GetAllAttachmentObjects() const {
+        return m_attachmentObjects;
+    }
+
+    Bool FramebufferObject::CheckCompleteness() const {
+        if (m_attachmentObjects.empty()) {
+            return false;
+        }
+
+        Int width = -1, height = -1;
+        Int validAttachmentCount = 0;
+        for (const auto& attachmentObject : m_attachmentObjects) {
+            if (!attachmentObject.IsValid()) continue;
+
+            ++validAttachmentCount;
+            const auto& attachment = attachmentObject;
+            auto attachmentSize = attachment.GetSize();
+            Int w = attachmentSize.x();
+            Int h = attachmentSize.y();
+
+            if (width == -1) {
+                width = w;
+                height = h;
+            } else if (width != w || height != h) {
                 return false;
             }
 
-            IntVec3 FramebufferAttachmentObject::GetSize() const {
-                if (IsTexture()) {
-                    // TODO: get correct upload target
-                    MOBILEGL_ASSERT(nullptr != dynamic_cast<MG_State::GLState::TextureObjectMipmap*>(m_texture.get()),
-                                    "Texture object here should always be an object with mipmap");
-                    auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(m_texture.get());
-                    return textureMipmapObject->GetMipmapTexelSize(TextureUploadTarget::Texture2D, m_textureLevel);
-                } else if (IsRenderbuffer()) {
-                    return IntVec3(m_renderbuffer->GetWidth(), m_renderbuffer->GetHeight(), 1);
-                }
-                return {0, 0, 0};
+            if (!attachment.IsComplete()) {
+                return false;
             }
+        }
 
-            Bool FramebufferAttachmentObject::IsValid() const {
-                return m_isValid;
-            }
+        if (validAttachmentCount == 0) return false;
+        return true;
+    }
 
-            // FramebufferObject
-            FramebufferObject::FramebufferObject(Uint externalIndex) : m_externalIndex(externalIndex) {
-                m_attachmentObjects.fill(FramebufferAttachmentObject(false));
-                m_drawBuffers.fill(FramebufferAttachmentType::None);
-                m_drawBuffers[0] = FramebufferAttachmentType::Color0;
-                m_attachmentVersions.fill(0);
-            }
+    void FramebufferObject::SetDrawBuffer(Uint index, FramebufferAttachmentType buffer) {
+        if (m_drawBuffers[index] == buffer) return;
+        m_drawBuffers[index] = buffer;
+        BumpAttachmentVersion(buffer);
+    }
 
-            void FramebufferObject::AttachTexture(FramebufferAttachmentType type, SharedPtr<ITextureObject> texture,
-                                                  int level) {
-                m_attachmentObjects[static_cast<SizeT>(type)] = FramebufferAttachmentObject(std::move(texture), level);
-                BumpAttachmentVersion(type);
-            }
+    const FramebufferObject::FramebufferAttachmentArray& FramebufferObject::GetDrawBuffers() const {
+        return m_drawBuffers;
+    }
 
-            void FramebufferObject::AttachRenderbuffer(FramebufferAttachmentType type,
-                                                       std::shared_ptr<RenderbufferObject> renderbuffer) {
-                m_attachmentObjects[static_cast<SizeT>(type)] = FramebufferAttachmentObject(renderbuffer);
-                BumpAttachmentVersion(type);
-            }
+    Uint FramebufferObject::GetExternalIndex() const {
+        return m_externalIndex;
+    }
 
-            void FramebufferObject::Detach(FramebufferAttachmentType type) {
-                m_attachmentObjects[static_cast<SizeT>(type)] = FramebufferAttachmentObject(false);
-                BumpAttachmentVersion(type);
-            }
-
-            const FramebufferAttachmentObject& FramebufferObject::GetAttachment(FramebufferAttachmentType type) const {
-                return m_attachmentObjects[static_cast<SizeT>(type)];
-            }
-
-            const FramebufferObject::FramebufferAttachmentObjectArray& FramebufferObject::GetAllAttachmentObjects()
-                const {
-                return m_attachmentObjects;
-            }
-
-            Bool FramebufferObject::CheckCompleteness() const {
-                if (m_attachmentObjects.empty()) {
-                    return false;
-                }
-
-                Int width = -1, height = -1;
-                Int validAttachmentCount = 0;
-                for (SizeT i = 0; i < m_attachmentObjects.size(); ++i) {
-                    if (!m_attachmentObjects[i].IsValid()) continue;
-
-                    ++validAttachmentCount;
-                    const auto& attachment = m_attachmentObjects[i];
-                    auto attachmentSize = attachment.GetSize();
-                    Int w = attachmentSize.x();
-                    Int h = attachmentSize.y();
-
-                    if (width == -1) {
-                        width = w;
-                        height = h;
-                    } else if (width != w || height != h) {
-                        return false;
-                    }
-
-                    if (!attachment.IsComplete()) {
-                        return false;
-                    }
-                }
-
-                if (validAttachmentCount == 0) return false;
-                return true;
-            }
-
-            void FramebufferObject::SetDrawBuffer(Uint index, FramebufferAttachmentType buffer) {
-                if (m_drawBuffers[index] == buffer) return;
-                m_drawBuffers[index] = buffer;
-                BumpAttachmentVersion(buffer);
-            }
-
-            const FramebufferObject::FramebufferAttachmentArray& FramebufferObject::GetDrawBuffers() const {
-                return m_drawBuffers;
-            }
-
-            Uint FramebufferObject::GetExternalIndex() const {
-                return m_externalIndex;
-            }
-
-            void FramebufferObject::BumpAttachmentVersion(FramebufferAttachmentType type) {
-                ++m_attachmentVersions[static_cast<SizeT>(type)];
-                ++m_objectVersion;
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    void FramebufferObject::BumpAttachmentVersion(FramebufferAttachmentType type) {
+        ++m_attachmentVersions[static_cast<SizeT>(type)];
+        ++m_objectVersion;
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/FramebufferState/FramebufferObject.h

@@ -7,6 +7,7 @@
 // End of Source File Header
 
 #pragma once
+#include "MG_Util/Types.h"
 #include <Includes.h>
 #include <MG_State/GLState/TextureState/TextureObject.h>
 #include <MG_State/GLState/RenderbufferState/RenderbufferObject.h>
@@ -62,86 +63,84 @@ namespace MobileGL {
         Color29,
         Color30,
         Color31,
+        ColorMax = Color31,
 
         FramebufferAttachmentTypeCount,
         Unknown = -1
     };
 
-    namespace MG_State {
-        namespace GLState {
-            class FramebufferAttachmentObject {
-            public:
-                explicit FramebufferAttachmentObject(SharedPtr<MG_State::GLState::ITextureObject> texture,
-                                                     Int level = 0);
-                explicit FramebufferAttachmentObject(SharedPtr<RenderbufferObject> renderbuffer);
-                explicit FramebufferAttachmentObject(Bool IsValid = true);
+    namespace MG_State::GLState {
+        class FramebufferAttachmentObject {
+        public:
+            explicit FramebufferAttachmentObject(const SharedPtr<MG_State::GLState::ITextureObject>& texture,
+                                                 Int level = 0);
+            explicit FramebufferAttachmentObject(const SharedPtr<RenderbufferObject>& renderbuffer);
+            explicit FramebufferAttachmentObject(Bool IsValid = true);
 
-                Bool IsTexture() const;
-                Bool IsRenderbuffer() const;
-                Bool IsEmpty() const;
-                SharedPtr<MG_State::GLState::ITextureObject> GetTexture() const;
-                SharedPtr<RenderbufferObject> GetRenderbuffer() const;
-                Int GetTextureLevel() const;
-                Bool IsComplete() const;
-                IntVec3 GetSize() const;
-                Bool IsValid() const;
+            Bool IsTexture() const;
+            Bool IsRenderbuffer() const;
+            Bool IsEmpty() const;
+            const SharedPtr<MG_State::GLState::ITextureObject>& GetTexture() const;
+            const SharedPtr<RenderbufferObject>& GetRenderbuffer() const;
+            Int GetTextureLevel() const;
+            Bool IsComplete() const;
+            IntVec3 GetSize() const;
+            Bool IsValid() const;
 
-            private:
-                SharedPtr<MG_State::GLState::ITextureObject> m_texture = nullptr;
-                SharedPtr<RenderbufferObject> m_renderbuffer = nullptr;
-                Int m_textureLevel = 0;
-                Bool m_isValid = true;
-            };
+        private:
+            SharedPtr<MG_State::GLState::ITextureObject> m_texture = nullptr;
+            SharedPtr<RenderbufferObject> m_renderbuffer = nullptr;
+            Int m_textureLevel = 0;
+            Bool m_isValid = true;
+        };
 
-            class FramebufferObject {
-            public:
-                static constexpr Uint MAX_DRAW_BUFFERS = 8;
+        class FramebufferObject {
+        public:
+            static constexpr Uint MAX_DRAW_BUFFERS = 8;
 
-                using TargetEnum = FramebufferTarget;
-                using FramebufferAttachmentObjectArray =
-                    Array<FramebufferAttachmentObject,
-                          static_cast<SizeT>(FramebufferAttachmentType::FramebufferAttachmentTypeCount)>;
-                using FramebufferAttachmentArray = Array<FramebufferAttachmentType, MAX_DRAW_BUFFERS>;
-                using FramebufferAttachmentVersionArray =
-                    Array<Uint16, static_cast<SizeT>(FramebufferAttachmentType::FramebufferAttachmentTypeCount)>;
+            using TargetEnum = FramebufferTarget;
+            using FramebufferAttachmentObjectArray =
+                Array<FramebufferAttachmentObject,
+                      static_cast<SizeT>(FramebufferAttachmentType::FramebufferAttachmentTypeCount)>;
+            using FramebufferAttachmentArray = Array<FramebufferAttachmentType, MAX_DRAW_BUFFERS>;
+            using FramebufferAttachmentVersionArray =
+                Array<Uint16, static_cast<SizeT>(FramebufferAttachmentType::FramebufferAttachmentTypeCount)>;
 
-                FramebufferObject(Uint externalIndex);
+            FramebufferObject(Uint externalIndex);
 
-                void AttachTexture(FramebufferAttachmentType type, SharedPtr<ITextureObject> texture, int level = 0);
-                void AttachRenderbuffer(FramebufferAttachmentType type,
-                                        std::shared_ptr<RenderbufferObject> renderbuffer);
-                void Detach(FramebufferAttachmentType type);
-                const FramebufferAttachmentObject& GetAttachment(FramebufferAttachmentType type) const;
-                const FramebufferAttachmentObjectArray& GetAllAttachmentObjects() const;
-                Bool CheckCompleteness() const;
-                // aka. `buffer` as in glDrawBuffers/glReadBuffers
-                void SetDrawBuffer(Uint index, FramebufferAttachmentType buffer);
-                const FramebufferAttachmentArray& GetDrawBuffers() const;
-                void SetReadBuffer(FramebufferAttachmentType buf) { m_readBuffer = buf; }
-                FramebufferAttachmentType GetReadBuffer() const { return m_readBuffer; }
+            void AttachTexture(FramebufferAttachmentType type, const SharedPtr<ITextureObject>& texture, int level = 0);
+            void AttachRenderbuffer(FramebufferAttachmentType type, const SharedPtr<RenderbufferObject>& renderbuffer);
+            void Detach(FramebufferAttachmentType type);
+            const FramebufferAttachmentObject& GetAttachment(FramebufferAttachmentType type) const;
+            const FramebufferAttachmentObjectArray& GetAllAttachmentObjects() const;
+            Bool CheckCompleteness() const;
+            // aka. `buffer` as in glDrawBuffers/glReadBuffers
+            void SetDrawBuffer(Uint index, FramebufferAttachmentType buffer);
+            const FramebufferAttachmentArray& GetDrawBuffers() const;
+            void SetReadBuffer(FramebufferAttachmentType buf) { m_readBuffer = buf; }
+            FramebufferAttachmentType GetReadBuffer() const { return m_readBuffer; }
 
-                const FramebufferAttachmentVersionArray GetAllFramebufferAttachmentVersions() const {
-                    return m_attachmentVersions;
-                }
+            FramebufferAttachmentVersionArray GetAllFramebufferAttachmentVersions() const {
+                return m_attachmentVersions;
+            }
 
-                Uint16 GetObjectVersion() const { return m_objectVersion; }
+            Uint16 GetObjectVersion() const { return m_objectVersion; }
 
-                Uint GetExternalIndex() const;
+            Uint GetExternalIndex() const;
 
-            private:
-                void BumpAttachmentVersion(FramebufferAttachmentType type);
+        private:
+            void BumpAttachmentVersion(FramebufferAttachmentType type);
 
-                const Uint m_externalIndex = 0;
-                FramebufferAttachmentObjectArray m_attachmentObjects;
-                FramebufferAttachmentVersionArray m_attachmentVersions;
+            const Uint m_externalIndex = 0;
+            FramebufferAttachmentObjectArray m_attachmentObjects;
+            FramebufferAttachmentVersionArray m_attachmentVersions;
 
-                FramebufferAttachmentArray m_drawBuffers; // Probably no versioning needed for this, just check equality
-                FramebufferAttachmentType m_readBuffer = FramebufferAttachmentType::Color0; // ditto
+            FramebufferAttachmentArray m_drawBuffers; // Probably no versioning needed for this, just check equality
+            FramebufferAttachmentType m_readBuffer = FramebufferAttachmentType::Color0; // ditto
 
-                // This version will bump when draw/read buffer changes (by `glDrawBuffer(s)`/`glReadBuffer`)
-                Uint16 m_objectVersion = 0;
-            };
+            // This version will bump when draw/read buffer changes (by `glDrawBuffer(s)`/`glReadBuffer`)
+            Uint16 m_objectVersion = 0;
+        };
 
-        } // namespace GLState
-    } // namespace MG_State
+    } // namespace MG_State::GLState
 } // namespace MobileGL

MobileGL/MG_State/GLState/FramebufferState/FramebufferState.cpp

@@ -9,74 +9,73 @@
 #include "FramebufferState.h"
 #include "MG_State/GLState/FramebufferState/FramebufferObject.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            FramebufferState::FramebufferState() {
-                for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                    m_bindingSlots[i] = BindingSlot<FramebufferObject>(static_cast<FramebufferTarget>(i));
-                }
-            }
+namespace MobileGL::MG_State::GLState {
+    FramebufferState::FramebufferState() {
+        for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
+            m_bindingSlots[i] = BindingSlot<FramebufferObject>(static_cast<FramebufferTarget>(i));
+        }
+    }
 
-            SharedPtr<FramebufferObject> FramebufferState::GetFramebufferObject(Uint index) {
-                auto it = m_framebufferObjects.find(index);
-                if (it != m_framebufferObjects.end()) {
-                    return it->second;
-                }
-                return nullptr;
-            }
+    const SharedPtr<FramebufferObject>& FramebufferState::GetFramebufferObject(Uint index) {
+        auto it = m_framebufferObjects.find(index);
+        if (it != m_framebufferObjects.end()) {
+            return it->second;
+        }
+        static SharedPtr<FramebufferObject> nullFramebufferObject = nullptr;
+        return nullFramebufferObject;
+    }
 
-            Vector<Uint> FramebufferState::GenerateNames(Uint number) {
-                Vector<Uint> buffers(number);
-                m_indexGenerator.Generate(number, buffers.data());
-                return buffers;
-            }
+    void FramebufferState::GenerateNames(Uint number, Vector<Uint>& buffers) {
+        buffers.resize(number);
+        m_indexGenerator.Generate(number, buffers.data());
+    }
 
-            SharedPtr<FramebufferObject> FramebufferState::CreateFramebufferObject(Uint index) {
-                if (index == 0) {
-                    if (!m_indexGenerator.IsValid(0)) {
-                        m_indexGenerator.Insert(0);
-                    } else {
-                        return nullptr;
+    const SharedPtr<FramebufferObject>& FramebufferState::CreateFramebufferObject(Uint index) {
+        if (index == 0) {
+            if (!m_indexGenerator.IsValid(0)) {
+                m_indexGenerator.Insert(0);
+            } else {
+                static SharedPtr<FramebufferObject> nullFramebufferObject = nullptr;
+                return nullFramebufferObject;
+            }
+        }
+        auto& framebufferObject = m_framebufferObjects[index];
+        if (!framebufferObject) {
+            framebufferObject = MakeShared<FramebufferObject>(index);
+        }
+        return framebufferObject;
+    }
+
+    BindingSlot<FramebufferObject>& FramebufferState::GetBindingSlot(FramebufferTarget target) {
+        for (auto& bindingSlot : m_bindingSlots) {
+            if (bindingSlot.GetTarget() == target) {
+                return bindingSlot;
+            }
+        }
+        MOBILEGL_ASSERT(false, "Invalid FramebufferTarget enum value: %d", static_cast<int>(target));
+        return m_bindingSlots[0];
+    }
+
+    void FramebufferState::MarkFramebufferObjectForDeletion(Uint index) {
+        if (m_indexGenerator.IsValid(index)) {
+            auto it = m_framebufferObjects.find(index);
+            if (it != m_framebufferObjects.end()) {
+                for (auto& bindingSlot : m_bindingSlots) {
+                    if (bindingSlot.GetBoundObject() == it->second) {
+                        bindingSlot.Bind(nullptr);
                     }
                 }
-                auto bufferObject = MakeShared<FramebufferObject>(index);
-                m_framebufferObjects[index] = bufferObject;
-                return bufferObject;
+                m_framebufferObjects.erase(it);
             }
+            m_indexGenerator.Delete(index);
+        }
+    }
 
-            BindingSlot<FramebufferObject>& FramebufferState::GetBindingSlot(FramebufferTarget target) {
-                for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                    if (m_bindingSlots[i].GetTarget() == target) {
-                        return m_bindingSlots[i];
-                    }
-                }
-                MOBILEGL_ASSERT(false, "Invalid FramebufferTarget enum value: %d", static_cast<int>(target));
-                return m_bindingSlots[0];
-            }
+    Bool FramebufferState::ValidateName(Uint index) const {
+        return m_indexGenerator.IsValid(index);
+    }
 
-            void FramebufferState::MarkFramebufferObjectForDeletion(Uint index) {
-                if (m_indexGenerator.IsValid(index)) {
-                    auto it = m_framebufferObjects.find(index);
-                    if (it != m_framebufferObjects.end()) {
-                        for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                            if (m_bindingSlots[i].GetBoundObject() == it->second) {
-                                m_bindingSlots[i].Bind(nullptr);
-                            }
-                        }
-                        m_framebufferObjects.erase(it);
-                    }
-                    m_indexGenerator.Delete(index);
-                }
-            }
-
-            Bool FramebufferState::ValidateName(Uint index) const {
-                return m_indexGenerator.IsValid(index);
-            }
-
-            Bool FramebufferState::ValidateFramebufferObject(Uint index) const {
-                return m_framebufferObjects.find(index) != m_framebufferObjects.end();
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    Bool FramebufferState::ValidateFramebufferObject(Uint index) const {
+        return m_framebufferObjects.find(index) != m_framebufferObjects.end();
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/FramebufferState/FramebufferState.h

@@ -11,28 +11,24 @@
 #include <MG_Util/Miscellany/IndexGenerator.h>
 #include "FramebufferObject.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            class FramebufferState {
-            public:
-                FramebufferState();
+namespace MobileGL::MG_State::GLState {
+    class FramebufferState {
+    public:
+        FramebufferState();
 
-                // FBO 0 should be created by MG_Backend when initializing the context
-                SharedPtr<FramebufferObject> GetFramebufferObject(Uint index);
-                Vector<Uint> GenerateNames(Uint number);
-                SharedPtr<FramebufferObject> CreateFramebufferObject(Uint index);
-                BindingSlot<FramebufferObject>& GetBindingSlot(FramebufferTarget target);
-                void MarkFramebufferObjectForDeletion(Uint index);
-                Bool ValidateName(Uint index) const;
-                Bool ValidateFramebufferObject(Uint index) const;
+        // FBO 0 should be created by MG_Backend when initializing the context
+        const SharedPtr<FramebufferObject>& GetFramebufferObject(Uint index);
+        void GenerateNames(Uint number, Vector<Uint>& framebuffers);
+        const SharedPtr<FramebufferObject>& CreateFramebufferObject(Uint index);
+        BindingSlot<FramebufferObject>& GetBindingSlot(FramebufferTarget target);
+        void MarkFramebufferObjectForDeletion(Uint index);
+        Bool ValidateName(Uint index) const;
+        Bool ValidateFramebufferObject(Uint index) const;
 
-            private:
-                UnorderedMap<Uint, SharedPtr<FramebufferObject>> m_framebufferObjects;
-                IndexGenerator<Uint> m_indexGenerator;
-                Array<BindingSlot<FramebufferObject>, static_cast<SizeT>(FramebufferTarget::FramebufferTargetCount)>
-                    m_bindingSlots;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    private:
+        UnorderedMap<Uint, SharedPtr<FramebufferObject>> m_framebufferObjects;
+        IndexGenerator<Uint> m_indexGenerator;
+        Array<BindingSlot<FramebufferObject>, static_cast<SizeT>(FramebufferTarget::FramebufferTargetCount)>
+            m_bindingSlots;
+    };
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ProgramState/ProgramObject.h

@@ -9,180 +9,176 @@
 #pragma once
 #include <Includes.h>
 #include "ShaderObject.h"
-#include "MG_Util/Metrics/BufferMetrics.h"
-#include "MG_Util/ShaderTranspiler/SpvcSession.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            class ProgramObject {
-            public:
-                ProgramObject(Uint externalIndex) : m_externalIndex(externalIndex) {}
-                bool ShaderIsAttached(SharedPtr<ShaderObject> shader);
-                bool AttachShader(SharedPtr<ShaderObject> shader);
-                SizeT DetachShader(SharedPtr<ShaderObject> shader);
-                SizeT RemoveShader(SharedPtr<ShaderObject> shader);
-                void Link(Bool addDefaultFSIfMissingForRenderingPipelineProgram = false);
-                void MarkAsDeleted();
+#include <MG_Util/Metrics/BufferMetrics.h>
+#include <MG_Util/ShaderTranspiler/SpvcSession.h>
 
-                void SetExplicitVertexInLocation(Uint index, const char* name);
-                void SetExplicitFragmentOutLocation(Uint index, const char* name);
-                Int GetFragmentDataLocation(const char* name);
+namespace MobileGL::MG_State::GLState {
+    class ProgramObject {
+    public:
+        ProgramObject(Uint externalIndex) : m_externalIndex(externalIndex) {}
+        bool ShaderIsAttached(const SharedPtr<ShaderObject>& shader);
+        bool AttachShader(const SharedPtr<ShaderObject>& shader);
+        SizeT DetachShader(const SharedPtr<ShaderObject>& shader);
+        SizeT RemoveShader(const SharedPtr<ShaderObject>& shader);
+        void Link(Bool addDefaultFSIfMissingForRenderingPipelineProgram = false);
+        void MarkAsDeleted();
 
-                Vector<SharedPtr<ShaderObject>>& GetAttachedShaders();
-                const Vector<SharedPtr<ShaderObject>>& GetAttachedShaders() const;
-                const String& GetInfoLog() const { return m_infoLog; }
-                Int GetUniformMaxLength() const { return m_uniformNameMaxLength; }
-                Uint GetUniformCount() { return m_activeUniformCount; }
-                Uint GetMaxUniformLocation() const { return m_maxUniformLocation; }
-                Int GetUniformLocation(const String& name) const {
-                    const auto it = m_uniformLocations.find(name);
-                    if (it == m_uniformLocations.end()) return -1;
-                    return (Int)it->second;
-                }
+        void SetExplicitVertexInLocation(Uint index, const char* name);
+        void SetExplicitFragmentOutLocation(Uint index, const char* name);
+        Int GetFragmentDataLocation(const char* name);
 
-                GLenum GetUniformType(Uint location) const {
-                    auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
-                    return uniform.glDefineType;
-                }
+        Vector<SharedPtr<ShaderObject>>& GetAttachedShaders();
+        const Vector<SharedPtr<ShaderObject>>& GetAttachedShaders() const;
+        const String& GetInfoLog() const { return m_infoLog; }
+        Int GetUniformMaxLength() const { return m_uniformNameMaxLength; }
+        Uint GetUniformCount() const { return m_activeUniformCount; }
+        Uint GetMaxUniformLocation() const { return m_maxUniformLocation; }
+        Int GetUniformLocation(const String& name) const {
+            const auto it = m_uniformLocations.find(name);
+            if (it == m_uniformLocations.end()) return -1;
+            return (Int)it->second;
+        }
 
-                const glslang::TType* GetUniformTType(Uint location) const {
-                    auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
-                    return uniform.getType();
-                }
+        GLenum GetUniformType(Uint location) const {
+            auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
+            return uniform.glDefineType;
+        }
 
-                Bool IsUniformOpaqueAtLocation(Uint location) const { return GetUniformTType(location)->isOpaque(); }
+        const glslang::TType* GetUniformTType(Uint location) const {
+            auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
+            return uniform.getType();
+        }
 
-                const String& GetUniformName(Uint location) const {
-                    auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
-                    return uniform.name;
-                }
-                Uint GetUniformOffset(Uint location) const { return m_uniformOffsets[location]; }
-                Uint GetUniformSizesInBytes(Uint location) const {
-                    return MG_Util::GetGLTypeSize(GetUniformType(location));
-                }
+        Bool IsUniformOpaqueAtLocation(Uint location) const { return GetUniformTType(location)->isOpaque(); }
 
-                Int GetAttributeLocation(const String& name) {
-                    const auto it = std::find(m_attribs.begin(), m_attribs.end(), name);
-                    return (it == m_attribs.end()) ? -1 : std::distance(m_attribs.begin(), it);
-                }
-                GLenum GetAttribType(Uint index) const { return m_attribTypes[index]; }
-                const String& GetAttribName(Uint index) const { return m_attribs[index]; }
-                void* MapUBO() { return m_uboScratch.data(); }
-                const void* GetUBOData() const { return m_uboScratch.data(); }
-                Uint GetUBOSize() const { return static_cast<Uint>(m_uboScratch.size()); }
+        const String& GetUniformName(Uint location) const {
+            auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
+            return uniform.name;
+        }
+        Uint GetUniformOffset(Uint location) const { return m_uniformOffsets[location]; }
+        Uint GetUniformSizesInBytes(Uint location) const { return MG_Util::GetGLTypeSize(GetUniformType(location)); }
 
-                void SetUniformSamplerOrImageUnitIndex(Uint location, Int unit) {
-                    m_uniformSamplerOrImageUnitIndex[location] = unit;
-                }
+        Int GetAttributeLocation(const String& name) {
+            const auto it = std::find(m_attribs.begin(), m_attribs.end(), name);
+            return (it == m_attribs.end()) ? -1 : (Int)std::distance(m_attribs.begin(), it);
+        }
+        GLenum GetAttribType(Uint index) const { return m_attribTypes[index]; }
+        const String& GetAttribName(Uint index) const { return m_attribs[index]; }
+        void* MapUBO() { return m_uboScratch.data(); }
+        const void* GetUBOData() const { return m_uboScratch.data(); }
+        Uint GetUBOSize() const { return static_cast<Uint>(m_uboScratch.size()); }
 
-                Int GetUniformSamplerOrImageUnitIndex(Uint location) const {
-                    return m_uniformSamplerOrImageUnitIndex[location];
-                }
+        void SetUniformSamplerOrImageUnitIndex(Uint location, Int unit) {
+            m_uniformSamplerOrImageUnitIndex[location] = unit;
+        }
 
-                Bool GetDeleteStatus() const { return m_deleteStatus; }
-                Bool GetLinkStatus() const { return m_linkStatus; }
-                Bool GetValidateStatus() const { return m_validateStatus; }
-                Int GetActiveAtomicCounterCount() const { return m_program->getNumAtomicCounters(); }
-                Int GetActiveAttributesCount() const { return m_program->getNumPipeInputs(); }
-                Int GetActiveUniformBlocksCount() const { return m_program->getNumUniformBlocks(); }
-                Int GetActiveAttributesMaxLength() const { return m_attribInNameMaxLength; }
-                Int GetActiveUniformBlocksMaxNameLength() const { return m_uniformBlockNameMaxLength; }
-                Uint GetUniformBlockIndex(const char* name) const {
-                    auto it = m_uniformBlockIndexByName.find(name);
-                    if (it != m_uniformBlockIndexByName.end()) return it->second;
-                    return 0xFFFFFFFFu; // GL_INVALID_INDEX
-                }
-                Bool IsActiveUniformBlock(Uint index) const {
-                    if (index >= GetActiveUniformBlocksCount()) return false;
-                    return true;
-                }
-                Uint GetUBOSizeAt(Uint index) const {
-                    if (!IsActiveUniformBlock(index)) return 0;
-                    return m_program->getUniformBlock(index).size;
-                }
+        Int GetUniformSamplerOrImageUnitIndex(Uint location) const {
+            return m_uniformSamplerOrImageUnitIndex[location];
+        }
 
-                const String& GetUniformBlockName(Uint index) const {
-                    auto& ubo = m_program->getUniformBlock(index);
-                    return ubo.name;
-                }
+        Bool GetDeleteStatus() const { return m_deleteStatus; }
+        Bool GetLinkStatus() const { return m_linkStatus; }
+        Bool GetValidateStatus() const { return m_validateStatus; }
+        Int GetActiveAtomicCounterCount() const { return m_program->getNumAtomicCounters(); }
+        Int GetActiveAttributesCount() const { return m_program->getNumPipeInputs(); }
+        Int GetActiveUniformBlocksCount() const { return m_program->getNumUniformBlocks(); }
+        Int GetActiveAttributesMaxLength() const { return m_attribInNameMaxLength; }
+        Int GetActiveUniformBlocksMaxNameLength() const { return m_uniformBlockNameMaxLength; }
+        Uint GetUniformBlockIndex(const char* name) const {
+            auto it = m_uniformBlockIndexByName.find(name);
+            if (it != m_uniformBlockIndexByName.end()) return it->second;
+            return 0xFFFFFFFFu; // GL_INVALID_INDEX
+        }
+        Bool IsActiveUniformBlock(Uint index) const {
+            if (index >= GetActiveUniformBlocksCount()) return false;
+            return true;
+        }
+        Uint GetUBOSizeAt(Uint index) const {
+            if (!IsActiveUniformBlock(index)) return 0;
+            return m_program->getUniformBlock((Int)index).size;
+        }
 
-                // Set by glUniformBlockBinding
-                void SetUniformBlockBinding(Uint index, Uint binding) { m_uniformBlockBinding[index] = binding; }
+        const String& GetUniformBlockName(Uint index) const {
+            auto& ubo = m_program->getUniformBlock((Int)index);
+            return ubo.name;
+        }
 
-                Uint GetUniformBlockBinding(Uint index) const { return m_uniformBlockBinding[index]; }
+        // Set by glUniformBlockBinding
+        void SetUniformBlockBinding(Uint index, Uint binding) { m_uniformBlockBinding[index] = (Int)binding; }
 
-                Vector<Vector<unsigned>>& GetGeneratedSpirv() { return m_generatedSpirv; }
-                const Vector<Vector<unsigned>>& GetGeneratedSpirv() const { return m_generatedSpirv; }
+        Uint GetUniformBlockBinding(Uint index) const { return m_uniformBlockBinding[index]; }
 
-                Int GetShaderIndexByStage(ShaderStage stage) const {
-                    auto it = std::find_if(m_shaders.begin(), m_shaders.end(),
-                        [stage](const SharedPtr<ShaderObject>& shader) { return shader->GetShaderStage() == stage; });
-                    return it == m_shaders.end() ? -1 : std::distance(m_shaders.begin(), it);
-                }
+        Vector<Vector<unsigned>>& GetGeneratedSpirv() { return m_generatedSpirv; }
+        const Vector<Vector<unsigned>>& GetGeneratedSpirv() const { return m_generatedSpirv; }
 
-                Uint GetExternalIndex() const { return m_externalIndex; }
+        Int GetShaderIndexByStage(ShaderStage stage) const {
+            auto it = std::find_if(m_shaders.begin(), m_shaders.end(), [stage](const SharedPtr<ShaderObject>& shader) {
+                return shader->GetShaderStage() == stage;
+            });
+            return it == m_shaders.end() ? -1 : (Int)std::distance(m_shaders.begin(), it);
+        }
 
-                //                const UnorderedMap<String, Uint>& GetAttribLocationMap() const { return
-                //                m_attribLocation; }
+        Uint GetExternalIndex() const { return m_externalIndex; }
 
-            private:
-                void DoReflection();
-                void GenerateBinary();
-                void WaitUntilGenerationCompleted();
-                void AddDefaultFragmentShaderIfMissing();
+        //                const UnorderedMap<String, Uint>& GetAttribLocationMap() const { return
+        //                m_attribLocation; }
 
-                const Uint m_externalIndex = 0;
-                Vector<SharedPtr<ShaderObject>> m_shaders;
-                Vector<SharedPtr<ShaderObject>> m_detachedShaders; // Store detached shaders and remove on next link
+    private:
+        void DoReflection();
+        void GenerateBinary();
+        void WaitUntilGenerationCompleted() const;
+        void AddDefaultFragmentShaderIfMissing();
 
-                SharedPtr<glslang::TProgram> m_program;
+        const Uint m_externalIndex = 0;
+        Vector<SharedPtr<ShaderObject>> m_shaders;
+        Vector<SharedPtr<ShaderObject>> m_detachedShaders; // Store detached shaders and remove on next link
 
-                Vector<Vector<unsigned>> m_generatedSpirv;
+        SharedPtr<glslang::TProgram> m_program;
 
-                // Attributes (Vertex in)
-                UnorderedMap<String, Uint> m_explicitAttribLocations;
-                Vector<String> m_attribs;
-                Vector<GLenum> m_attribTypes;
-                // For SpvcSession::SetVertexAttribLocation()
-                //                UnorderedMap<String, Uint> m_attribLocation;
+        Vector<Vector<unsigned>> m_generatedSpirv;
 
-                // FragData (Frag out)
-                UnorderedMap<String, Uint> m_explicitFragDataLocation;
+        // Attributes (Vertex in)
+        UnorderedMap<String, Uint> m_explicitAttribLocations;
+        Vector<String> m_attribs;
+        Vector<GLenum> m_attribTypes;
+        // For SpvcSession::SetVertexAttribLocation()
+        //                UnorderedMap<String, Uint> m_attribLocation;
 
-                // Uniforms
-                UnorderedMap<String, Uint> m_uniformLocations;
-                // Ordered by location,
-                // aka. m_uniformIndexInTProgram[loc] == "uniform index of TProgram at location `loc`"
-                Vector<Int> m_uniformIndexInTProgram;
-                // ditto. Will be set at glUniform1i
-                Vector<Int> m_uniformSamplerOrImageUnitIndex;
+        // FragData (Frag out)
+        UnorderedMap<String, Uint> m_explicitFragDataLocation;
 
-                // Ordered by uniform block index
-                // index is DIFFERENT from binding!!!
-                //
-                // Let's define UniformBlockIndex == the order at glslang getUniformBlock()
-                // aka `i = glGetUniformBlockIndex(prog, "BlockName")` implies:
-                // `prog->getUniformBlock(i) == "BlockName"`
-                UnorderedMap<String, Uint> m_uniformBlockIndexByName;
-                Vector<Int> m_uniformBlockBinding;
+        // Uniforms
+        UnorderedMap<String, Uint> m_uniformLocations;
+        // Ordered by location,
+        // aka. m_uniformIndexInTProgram[loc] == "uniform index of TProgram at location `loc`"
+        Vector<Int> m_uniformIndexInTProgram;
+        // ditto. Will be set at glUniform1i
+        Vector<Int> m_uniformSamplerOrImageUnitIndex;
 
-                // Need to be reflected after linking of SPIR-V binary
-                Vector<Uint> m_uniformOffsets;
-                Vector<Uint> m_uniformSizesInBytes;
-                Vector<Uint8> m_uboScratch;
+        // Ordered by uniform block index
+        // index is DIFFERENT from binding!!!
+        //
+        // Let's define UniformBlockIndex == the order at glslang getUniformBlock()
+        // aka `i = glGetUniformBlockIndex(prog, "BlockName")` implies:
+        // `prog->getUniformBlock(i) == "BlockName"`
+        UnorderedMap<String, Uint> m_uniformBlockIndexByName;
+        Vector<Int> m_uniformBlockBinding;
 
-                Uint m_activeUniformCount = 0;
-                Uint m_maxUniformLocation = 0;
-                Int m_uniformNameMaxLength = 0;
-                Int m_attribInNameMaxLength = 0;
-                Int m_uniformBlockNameMaxLength = 0;
+        // Need to be reflected after linking of SPIR-V binary
+        Vector<Uint> m_uniformOffsets;
+        Vector<Uint> m_uniformSizesInBytes;
+        Vector<Uint8> m_uboScratch;
 
-                String m_infoLog;
-                Bool m_deleteStatus = false;
-                Bool m_linkStatus = false;
-                Bool m_validateStatus = true;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+        Uint m_activeUniformCount = 0;
+        Uint m_maxUniformLocation = 0;
+        Int m_uniformNameMaxLength = 0;
+        Int m_attribInNameMaxLength = 0;
+        Int m_uniformBlockNameMaxLength = 0;
+
+        String m_infoLog;
+        Bool m_deleteStatus = false;
+        Bool m_linkStatus = false;
+        Bool m_validateStatus = true;
+    };
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ProgramState/ProgramState.cpp

@@ -8,73 +8,71 @@
 
 #include "ProgramState.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            Uint ProgramState::CreateProgram() {
-                Uint programId = 0;
-                m_programIndexGenerator.Generate(1, &programId);
-                EnsureIndexAvail(programId, m_programObjects);
-                auto programObject = MakeShared<ProgramObject>(programId);
-                if (programObject == nullptr) return 0;
-                m_programObjects[programId] = programObject;
-                return programId;
-            }
+namespace MobileGL::MG_State::GLState {
+    Uint ProgramState::CreateProgram() {
+        Uint programId = 0;
+        m_programIndexGenerator.Generate(1, &programId);
+        EnsureIndexAvail(programId, m_programObjects);
+        auto programObject = MakeShared<ProgramObject>(programId);
+        if (programObject == nullptr) return 0;
+        m_programObjects[programId] = programObject;
+        return programId;
+    }
 
-            SharedPtr<ProgramObject> ProgramState::GetProgramObject(const Uint id) {
-                if (!CheckIndexAvail(id, m_programObjects)) return nullptr; // FIXME: add error reporting here
-                return m_programObjects[id];
-            }
+    const SharedPtr<ProgramObject>& ProgramState::GetProgramObject(const Uint id) {
+        static SharedPtr<ProgramObject> nullProgramObject = nullptr;
+        if (!CheckIndexAvail(id, m_programObjects)) return nullProgramObject; // FIXME: add error reporting here
+        return m_programObjects[id];
+    }
 
-            void ProgramState::MarkProgramObjectForDeletion(const Uint program) {
-                if (!CheckIndexAvail(program, m_programObjects)) return; // FIXME: add error reporting here
-                auto& programObject = m_programObjects[program];
-                if (programObject != nullptr) {
-                    programObject->MarkAsDeleted();
-                    programObject.reset();
-                    m_programIndexGenerator.Delete(program);
-                }
-            }
+    void ProgramState::MarkProgramObjectForDeletion(const Uint program) {
+        if (!CheckIndexAvail(program, m_programObjects)) return; // FIXME: add error reporting here
+        auto& programObject = m_programObjects[program];
+        if (programObject != nullptr) {
+            programObject->MarkAsDeleted();
+            programObject.reset();
+            m_programIndexGenerator.Delete(program);
+        }
+    }
 
-            Bool ProgramState::ValidateProgramObject(const Uint program) const {
-                return CheckIndexAvail(program, m_programObjects) && m_programObjects[program] != nullptr;
-            }
+    Bool ProgramState::ValidateProgramObject(const Uint program) const {
+        return CheckIndexAvail(program, m_programObjects) && m_programObjects[program] != nullptr;
+    }
 
-            void ProgramState::UseProgram(Uint program) {
-                if (program == 0) m_currentProgram.reset();
+    void ProgramState::UseProgram(Uint program) {
+        if (program == 0) m_currentProgram.reset();
 
-                if (!CheckIndexAvail(program, m_programObjects)) return;
-                m_currentProgram = m_programObjects[program];
-            }
+        if (!CheckIndexAvail(program, m_programObjects)) return;
+        m_currentProgram = m_programObjects[program];
+    }
 
-            Uint ProgramState::CreateShader(ShaderStage stage) {
-                Uint shaderId = 0;
-                m_shaderIndexGenerator.Generate(1, &shaderId);
-                EnsureIndexAvail(shaderId, m_shaderObjects);
-                auto shaderObject = MakeShared<ShaderObject>(stage, shaderId);
-                if (shaderObject == nullptr) return 0;
-                m_shaderObjects[shaderId] = shaderObject;
-                return shaderId;
-            }
+    Uint ProgramState::CreateShader(ShaderStage stage) {
+        Uint shaderId = 0;
+        m_shaderIndexGenerator.Generate(1, &shaderId);
+        EnsureIndexAvail(shaderId, m_shaderObjects);
+        auto shaderObject = MakeShared<ShaderObject>(stage, shaderId);
+        if (shaderObject == nullptr) return 0;
+        m_shaderObjects[shaderId] = shaderObject;
+        return shaderId;
+    }
 
-            SharedPtr<ShaderObject> ProgramState::GetShaderObject(const Uint shader) {
-                if (!CheckIndexAvail(shader, m_shaderObjects)) return nullptr;
-                return m_shaderObjects[shader];
-            }
+    const SharedPtr<ShaderObject>& ProgramState::GetShaderObject(const Uint shader) {
+        static SharedPtr<ShaderObject> nullShaderObject = nullptr;
+        if (!CheckIndexAvail(shader, m_shaderObjects)) return nullShaderObject;
+        return m_shaderObjects[shader];
+    }
 
-            void ProgramState::MarkShaderObjectForDeletion(Uint shader) {
-                if (!CheckIndexAvail(shader, m_shaderObjects)) return;
-                auto& shaderObject = m_shaderObjects[shader];
-                if (shaderObject != nullptr) {
-                    m_shaderObjects[shader]->MarkAsDeleted();
-                    m_shaderObjects[shader].reset();
-                    m_shaderIndexGenerator.Delete(shader);
-                }
-            }
+    void ProgramState::MarkShaderObjectForDeletion(Uint shader) {
+        if (!CheckIndexAvail(shader, m_shaderObjects)) return;
+        auto& shaderObject = m_shaderObjects[shader];
+        if (shaderObject != nullptr) {
+            m_shaderObjects[shader]->MarkAsDeleted();
+            m_shaderObjects[shader].reset();
+            m_shaderIndexGenerator.Delete(shader);
+        }
+    }
 
-            Bool ProgramState::ValidateShaderObject(Uint shader) const {
-                return CheckIndexAvail(shader, m_shaderObjects) && m_shaderObjects[shader] != nullptr;
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    Bool ProgramState::ValidateShaderObject(Uint shader) const {
+        return CheckIndexAvail(shader, m_shaderObjects) && m_shaderObjects[shader] != nullptr;
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ProgramState/ProgramState.h

@@ -11,49 +11,45 @@
 #include <MG_Util/Miscellany/IndexGenerator.h>
 #include "ProgramObject.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            class ProgramState {
-            public:
-                // This function WILL actually create the program object.
-                // To retrieve created program object, use GetProgramObject()
-                Uint CreateProgram();
-                SharedPtr<ProgramObject> GetProgramObject(Uint id);
-                void MarkProgramObjectForDeletion(Uint program);
-                Bool ValidateProgramObject(Uint program) const;
+namespace MobileGL::MG_State::GLState {
+    class ProgramState {
+    public:
+        // This function WILL actually create the program object.
+        // To retrieve created program object, use GetProgramObject()
+        Uint CreateProgram();
+        const SharedPtr<ProgramObject>& GetProgramObject(Uint id);
+        void MarkProgramObjectForDeletion(Uint program);
+        Bool ValidateProgramObject(Uint program) const;
 
-                void UseProgram(Uint program);
+        void UseProgram(Uint program);
 
-                Uint CreateShader(ShaderStage stage);
-                SharedPtr<ShaderObject> GetShaderObject(Uint shader);
-                void MarkShaderObjectForDeletion(Uint shader);
-                Bool ValidateShaderObject(Uint shader) const;
+        Uint CreateShader(ShaderStage stage);
+        const SharedPtr<ShaderObject>& GetShaderObject(Uint shader);
+        void MarkShaderObjectForDeletion(Uint shader);
+        Bool ValidateShaderObject(Uint shader) const;
 
-                SharedPtr<ProgramObject> GetCurrentProgram() const { return m_currentProgram; }
+        const SharedPtr<ProgramObject>& GetCurrentProgram() const { return m_currentProgram; }
 
-            private:
-                template <typename T>
-                static Bool CheckIndexAvail(const SizeT idx, const Vector<T>& vec) {
-                    return idx < vec.size();
-                }
+    private:
+        template <typename T>
+        static Bool CheckIndexAvail(const SizeT idx, const Vector<T>& vec) {
+            return idx < vec.size();
+        }
 
-                template <typename T>
-                static void EnsureIndexAvail(const SizeT idx, Vector<T>& vec) {
-                    if (CheckIndexAvail(idx, vec)) return;
+        template <typename T>
+        static void EnsureIndexAvail(const SizeT idx, Vector<T>& vec) {
+            if (CheckIndexAvail(idx, vec)) return;
 
-                    vec.reserve(std::bit_ceil(idx));
-                    vec.resize(idx + 1);
-                }
+            vec.reserve(std::bit_ceil(idx));
+            vec.resize(idx + 1);
+        }
 
-                IndexGenerator<Uint> m_programIndexGenerator;
-                Vector<SharedPtr<ProgramObject>> m_programObjects;
+        IndexGenerator<Uint> m_programIndexGenerator;
+        Vector<SharedPtr<ProgramObject>> m_programObjects;
 
-                IndexGenerator<Uint> m_shaderIndexGenerator;
-                Vector<SharedPtr<ShaderObject>> m_shaderObjects;
+        IndexGenerator<Uint> m_shaderIndexGenerator;
+        Vector<SharedPtr<ShaderObject>> m_shaderObjects;
 
-                SharedPtr<ProgramObject> m_currentProgram;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+        SharedPtr<ProgramObject> m_currentProgram;
+    };
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ProgramState/ShaderObject.cpp

@@ -13,43 +13,40 @@
 #include <MG_Util/ShaderTranspiler/ShaderSourceProcessor.h>
 #include <MG_Util/ShaderTranspiler/glslang/UniformTraverser.h>
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            void ShaderObject::SetShaderSource(const String& source) {
-                m_source = source;
-            }
+namespace MobileGL::MG_State::GLState {
+    void ShaderObject::SetShaderSource(const String& source) {
+        m_source = source;
+    }
 
-            void ShaderObject::SetShaderSource(String&& source) {
-                m_source = Move(source);
-            }
+    void ShaderObject::SetShaderSource(String&& source) {
+        m_source = Move(source);
+    }
 
-            void ShaderObject::Compile() {
-                using namespace MG_Util::ShaderTranspiler;
-                MG_Util::ShaderTranspiler::PreprocessShaderSource(m_stage, m_source);
+    void ShaderObject::Compile() {
+        using namespace MG_Util::ShaderTranspiler;
+        MG_Util::ShaderTranspiler::PreprocessShaderSource(m_stage, m_source);
 
-                // 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.
-                ShaderAttrib attrib{
-                    .shaderType = MG_Util::ConvertShaderStageToGLEnum(m_stage), .sourceStr = m_source, .flags = ShaderCompileBits::CompileForOpenGL};
+        // 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.
+        ShaderAttrib attrib{.shaderType = MG_Util::ConvertShaderStageToGLEnum(m_stage),
+                            .sourceStr = m_source,
+                            .flags = ShaderCompileBits::CompileForOpenGL};
 
-                auto result = ShaderCompiler::CompileShader(attrib);
-                if (result) {
-                    m_compileStatus = true;
-                    m_shader = result.value();
-                } else {
-                    m_compileStatus = false;
-                    m_infoLog = result.error().log;
-                    MGLOG_D("ShaderObject::Compile: Shader %d compilation failed.\nSource:\n%s\nInfoLog:\n%s\nSetting "
-                            "m_compileStatus = false as a result.",
-                            m_externalIndex, m_source.c_str(), m_infoLog.c_str());
-                }
-            }
+        auto result = ShaderCompiler::CompileShader(attrib);
+        if (result) {
+            m_compileStatus = true;
+            m_shader = result.value();
+        } else {
+            m_compileStatus = false;
+            m_infoLog = result.error().log;
+            MGLOG_D("ShaderObject::Compile: Shader %d compilation failed.\nSource:\n%s\nInfoLog:\n%s\nSetting "
+                    "m_compileStatus = false as a result.",
+                    m_externalIndex, m_source.c_str(), m_infoLog.c_str());
+        }
+    }
 
-            void ShaderObject::MarkAsDeleted() {
-                m_deleteStatus = true;
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    void ShaderObject::MarkAsDeleted() {
+        m_deleteStatus = true;
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/ProgramState/ShaderObject.h

@@ -21,37 +21,35 @@ namespace MobileGL {
         Unknown = -1
     };
 
-    namespace MG_State {
-        namespace GLState {
-            class ShaderObject {
-            public:
-                ShaderObject(const ShaderStage stage, Uint externalIndex)
-                    : m_stage(stage), m_externalIndex(externalIndex) {}
-                void SetShaderSource(const String& source);
-                void SetShaderSource(String&& source);
-                void Compile();
-                void MarkAsDeleted();
+    namespace MG_State::GLState {
+        class ShaderObject {
+        public:
+            ShaderObject(const ShaderStage stage, Uint externalIndex)
+                : m_stage(stage), m_externalIndex(externalIndex) {}
+            void SetShaderSource(const String& source);
+            void SetShaderSource(String&& source);
+            void Compile();
+            void MarkAsDeleted();
 
-                Uint GetExternalIndex() const { return m_externalIndex; }
-                ShaderStage GetShaderStage() const { return m_stage; }
-                const String& GetShaderSource() const { return m_source; }
-                SharedPtr<glslang::TShader> GetCompiledShader() const { return m_shader; }
-                const String& GetInfoLog() const { return m_infoLog; }
-                const UnorderedMap<String, Uint>& GetUniformLocations() const { return m_uniforms; }
-                Bool GetCompileStatus() const { return m_compileStatus; }
-                Bool GetDeleteStatus() const { return m_deleteStatus; }
+            Uint GetExternalIndex() const { return m_externalIndex; }
+            ShaderStage GetShaderStage() const { return m_stage; }
+            const String& GetShaderSource() const { return m_source; }
+            const SharedPtr<glslang::TShader>& GetCompiledShader() const { return m_shader; }
+            const String& GetInfoLog() const { return m_infoLog; }
+            const UnorderedMap<String, Uint>& GetUniformLocations() const { return m_uniforms; }
+            Bool GetCompileStatus() const { return m_compileStatus; }
+            Bool GetDeleteStatus() const { return m_deleteStatus; }
 
-            private:
-                const Uint m_externalIndex = 0;
-                const ShaderStage m_stage;
-                String m_source;
-                SharedPtr<glslang::TShader> m_shader;
-                UnorderedMap<String, Uint> m_uniforms;
+        private:
+            const Uint m_externalIndex = 0;
+            const ShaderStage m_stage;
+            String m_source;
+            SharedPtr<glslang::TShader> m_shader;
+            UnorderedMap<String, Uint> m_uniforms;
 
-                String m_infoLog;
-                Bool m_deleteStatus = false;
-                Bool m_compileStatus = false;
-            };
-        } // namespace GLState
-    } // namespace MG_State
+            String m_infoLog;
+            Bool m_deleteStatus = false;
+            Bool m_compileStatus = false;
+        };
+    } // namespace MG_State::GLState
 } // namespace MobileGL

MobileGL/MG_State/GLState/RenderState/RenderState.cpp

@@ -38,8 +38,8 @@ namespace MobileGL {
             void RenderState::SetCapability(CapabilityInput cap, Bool enabled) {
 #define SET_CAPABILITY(capability, flag)                                                                               \
     case CapabilityInput::capability:                                                                                  \
-        if (m_parameters.capability##Enabled == flag) break;                                                           \
-        m_parameters.capability##Enabled = flag;                                                                       \
+        if (m_parameters.capability##Enabled == (flag)) break;                                                         \
+        m_parameters.capability##Enabled = (flag);                                                                     \
         ++m_version;                                                                                                   \
         break;
 
@@ -195,7 +195,7 @@ namespace MobileGL {
                 ++m_version;
             }
 
-            const BoolVec4 RenderState::GetColorMask() const {
+            BoolVec4 RenderState::GetColorMask() const {
                 return m_parameters.ColorMask;
             }
 
@@ -229,7 +229,7 @@ namespace MobileGL {
                 ++m_version;
             }
 
-            Int RenderState::GetClearStencil() const {
+            Uint32 RenderState::GetClearStencil() const {
                 return m_parameters.ClearStencil;
             }
 
@@ -237,8 +237,8 @@ namespace MobileGL {
             void RenderState::SetPixelStoreParam(PixelStoreParam param, Int value) {
 #define SET_PIXEL_STORE_PARAM(paramNameHead, paramNameTail, val)                                                       \
     case PixelStoreParam::paramNameHead##paramNameTail:                                                                \
-        if (m_pixelStore##paramNameHead##Parameters.paramNameTail == val) break;                                       \
-        m_pixelStore##paramNameHead##Parameters.paramNameTail = val;                                                   \
+        if (m_pixelStore##paramNameHead##Parameters.paramNameTail == (val)) break;                                     \
+        m_pixelStore##paramNameHead##Parameters.paramNameTail = (val);                                                 \
         break;
 
                 switch (param) {

MobileGL/MG_State/GLState/RenderState/RenderState.h

@@ -154,7 +154,7 @@ namespace MobileGL {
         // Clear State
         FloatVec4 ClearColor = FloatVec4(0.0f, 0.0f, 0.0f, 1.0f);
         Float ClearDepth = 1.0f;
-        Int ClearStencil = 0;
+        Uint32 ClearStencil = 0;
 
         // Cull Face
         Bool CullFaceEnabled = false;
@@ -201,7 +201,7 @@ namespace MobileGL {
 
                 // Color Mask
                 void SetColorMask(BoolVec4 mask);
-                const BoolVec4 GetColorMask() const;
+                BoolVec4 GetColorMask() const;
 
                 // Clear State
                 void SetClearColor(FloatVec4 color);
@@ -209,7 +209,7 @@ namespace MobileGL {
                 void SetClearDepth(Float depth);
                 Float GetClearDepth() const;
                 void SetClearStencil(Int stencil);
-                Int GetClearStencil() const;
+                Uint32 GetClearStencil() const;
 
                 // Pixel Store
                 void SetPixelStoreParam(PixelStoreParam param, Int value);

MobileGL/MG_State/GLState/RenderbufferState/RenderbufferState.cpp

@@ -7,68 +7,67 @@
 // End of Source File Header
 
 #include "RenderbufferState.h"
+#include "MG_Util/Types.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            RenderbufferState::RenderbufferState() : m_indexGenerator(1024, 1) {
-                for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                    m_bindingSlots[i] = BindingSlot<RenderbufferObject>(static_cast<RenderbufferTarget>(i));
-                }
+namespace MobileGL::MG_State::GLState {
+    RenderbufferState::RenderbufferState() : m_indexGenerator(1024, 1) {
+        for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
+            m_bindingSlots[i] = BindingSlot<RenderbufferObject>(static_cast<RenderbufferTarget>(i));
+        }
+    }
+
+    const SharedPtr<RenderbufferObject>& RenderbufferState::GetRenderbufferObject(Uint index) {
+        auto it = m_renderbufferObjects.find(index);
+        if (it != m_renderbufferObjects.end()) {
+            return it->second;
+        }
+        static SharedPtr<RenderbufferObject> nullRenderbufferObject = nullptr;
+        return nullRenderbufferObject;
+    }
+
+    void RenderbufferState::GenerateNames(Uint number, Vector<Uint>& renderbuffers) {
+        renderbuffers.resize(number);
+        m_indexGenerator.Generate(number, renderbuffers.data());
+    }
+
+    const SharedPtr<RenderbufferObject>& RenderbufferState::CreateRenderbufferObject(Uint index) {
+        auto& bufferObject = m_renderbufferObjects[index];
+        if (!bufferObject) {
+            bufferObject = MakeShared<RenderbufferObject>(index);
+        }
+        return bufferObject;
+    }
+
+    BindingSlot<RenderbufferObject>& RenderbufferState::GetBindingSlot(RenderbufferTarget target) {
+        for (auto& bindingSlot : m_bindingSlots) {
+            if (bindingSlot.GetTarget() == target) {
+                return bindingSlot;
             }
+        }
+        MOBILEGL_ASSERT(false, "Invalid RenderbufferTarget enum value: %d", static_cast<int>(target));
+        return m_bindingSlots[0];
+    }
 
-            SharedPtr<RenderbufferObject> RenderbufferState::GetRenderbufferObject(Uint index) {
-                auto it = m_renderbufferObjects.find(index);
-                if (it != m_renderbufferObjects.end()) {
-                    return it->second;
-                }
-                return nullptr;
-            }
-
-            Vector<Uint> RenderbufferState::GenerateNames(Uint number) {
-                Vector<Uint> buffers(number);
-                m_indexGenerator.Generate(number, buffers.data());
-                return buffers;
-            }
-
-            SharedPtr<RenderbufferObject> RenderbufferState::CreateRenderbufferObject(Uint index) {
-                auto bufferObject = MakeShared<RenderbufferObject>(index);
-                m_renderbufferObjects[index] = bufferObject;
-                return bufferObject;
-            }
-
-            BindingSlot<RenderbufferObject>& RenderbufferState::GetBindingSlot(RenderbufferTarget target) {
-                for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                    if (m_bindingSlots[i].GetTarget() == target) {
-                        return m_bindingSlots[i];
+    void RenderbufferState::MarkRenderbufferObjectForDeletion(Uint index) {
+        if (m_indexGenerator.IsValid(index)) {
+            auto it = m_renderbufferObjects.find(index);
+            if (it != m_renderbufferObjects.end()) {
+                for (auto& bindingSlot : m_bindingSlots) {
+                    if (bindingSlot.GetBoundObject() == it->second) {
+                        bindingSlot.Bind(nullptr);
                     }
                 }
-                MOBILEGL_ASSERT(false, "Invalid RenderbufferTarget enum value: %d", static_cast<int>(target));
-                return m_bindingSlots[0];
+                m_renderbufferObjects.erase(it);
             }
+            m_indexGenerator.Delete(index);
+        }
+    }
 
-            void RenderbufferState::MarkRenderbufferObjectForDeletion(Uint index) {
-                if (m_indexGenerator.IsValid(index)) {
-                    auto it = m_renderbufferObjects.find(index);
-                    if (it != m_renderbufferObjects.end()) {
-                        for (SizeT i = 0; i < m_bindingSlots.size(); ++i) {
-                            if (m_bindingSlots[i].GetBoundObject() == it->second) {
-                                m_bindingSlots[i].Bind(nullptr);
-                            }
-                        }
-                        m_renderbufferObjects.erase(it);
-                    }
-                    m_indexGenerator.Delete(index);
-                }
-            }
+    Bool RenderbufferState::ValidateName(Uint index) const {
+        return m_indexGenerator.IsValid(index);
+    }
 
-            Bool RenderbufferState::ValidateName(Uint index) const {
-                return m_indexGenerator.IsValid(index);
-            }
-
-            Bool RenderbufferState::ValidateRenderbufferObject(Uint index) const {
-                return m_renderbufferObjects.find(index) != m_renderbufferObjects.end();
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    Bool RenderbufferState::ValidateRenderbufferObject(Uint index) const {
+        return m_renderbufferObjects.find(index) != m_renderbufferObjects.end();
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/RenderbufferState/RenderbufferState.h

@@ -11,27 +11,23 @@
 #include <MG_Util/Miscellany/IndexGenerator.h>
 #include "RenderbufferObject.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            class RenderbufferState {
-            public:
-                RenderbufferState();
+namespace MobileGL::MG_State::GLState {
+    class RenderbufferState {
+    public:
+        RenderbufferState();
 
-                SharedPtr<RenderbufferObject> GetRenderbufferObject(Uint index);
-                Vector<Uint> GenerateNames(Uint number);
-                SharedPtr<RenderbufferObject> CreateRenderbufferObject(Uint index);
-                BindingSlot<RenderbufferObject>& GetBindingSlot(RenderbufferTarget target);
-                void MarkRenderbufferObjectForDeletion(Uint index);
-                Bool ValidateName(Uint index) const;
-                Bool ValidateRenderbufferObject(Uint index) const;
+        const SharedPtr<RenderbufferObject>& GetRenderbufferObject(Uint index);
+        void GenerateNames(Uint number, Vector<Uint>& renderbuffers);
+        const SharedPtr<RenderbufferObject>& CreateRenderbufferObject(Uint index);
+        BindingSlot<RenderbufferObject>& GetBindingSlot(RenderbufferTarget target);
+        void MarkRenderbufferObjectForDeletion(Uint index);
+        Bool ValidateName(Uint index) const;
+        Bool ValidateRenderbufferObject(Uint index) const;
 
-            private:
-                UnorderedMap<Uint, SharedPtr<RenderbufferObject>> m_renderbufferObjects;
-                IndexGenerator<Uint> m_indexGenerator;
-                Array<BindingSlot<RenderbufferObject>, static_cast<SizeT>(RenderbufferTarget::RenderbufferTargetCount)>
-                    m_bindingSlots;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    private:
+        UnorderedMap<Uint, SharedPtr<RenderbufferObject>> m_renderbufferObjects;
+        IndexGenerator<Uint> m_indexGenerator;
+        Array<BindingSlot<RenderbufferObject>, static_cast<SizeT>(RenderbufferTarget::RenderbufferTargetCount)>
+            m_bindingSlots;
+    };
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/SamplerState/SamplerState.cpp

@@ -8,42 +8,38 @@
 
 #include "SamplerState.h"
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            SamplerState::SamplerState() : m_indexGenerator(1024, 1) {}
+namespace MobileGL::MG_State::GLState {
+    SamplerState::SamplerState() : m_indexGenerator(1024, 1) {}
 
-            Vector<Uint> SamplerState::GenerateNames(Uint number) {
-                Vector<Uint> names(number);
-                m_indexGenerator.Generate(number, names.data());
-                return names;
-            }
+    void SamplerState::GenerateNames(Uint number, Vector<Uint>& samplers) {
+        samplers.resize(number);
+        m_indexGenerator.Generate(number, samplers.data());
+    }
 
-            SharedPtr<SamplerObject> SamplerState::GetSamplerObject(Uint index) {
-                auto it = m_samplerObjects.find(index);
-                return it != m_samplerObjects.end() ? it->second : nullptr;
-            }
+    const SharedPtr<SamplerObject>& SamplerState::GetSamplerObject(Uint index) {
+        auto it = m_samplerObjects.find(index);
+        static SharedPtr<SamplerObject> nullSamplerObject = nullptr;
+        return it != m_samplerObjects.end() ? it->second : nullSamplerObject;
+    }
 
-            SharedPtr<SamplerObject> SamplerState::CreateSamplerObject(Uint index) {
-                auto sampler = MakeShared<SamplerObject>(index);
-                m_samplerObjects[index] = sampler;
-                return sampler;
-            }
+    const SharedPtr<SamplerObject>& SamplerState::CreateSamplerObject(Uint index) {
+        auto& sampler = m_samplerObjects[index];
+        sampler = MakeShared<SamplerObject>(index);
+        return sampler;
+    }
 
-            void SamplerState::MarkSamplerObjectForDeletion(Uint index) {
-                if (m_indexGenerator.IsValid(index)) {
-                    m_samplerObjects.erase(index);
-                    m_indexGenerator.Delete(index);
-                }
-            }
+    void SamplerState::MarkSamplerObjectForDeletion(Uint index) {
+        if (m_indexGenerator.IsValid(index)) {
+            m_samplerObjects.erase(index);
+            m_indexGenerator.Delete(index);
+        }
+    }
 
-            Bool SamplerState::ValidateName(Uint index) const {
-                return m_indexGenerator.IsValid(index);
-            }
+    Bool SamplerState::ValidateName(Uint index) const {
+        return m_indexGenerator.IsValid(index);
+    }
 
-            Bool SamplerState::ValidateSamplerObject(Uint index) const {
-                return m_samplerObjects.find(index) != m_samplerObjects.end();
-            }
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    Bool SamplerState::ValidateSamplerObject(Uint index) const {
+        return m_samplerObjects.find(index) != m_samplerObjects.end();
+    }
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/SamplerState/SamplerState.h

@@ -18,9 +18,9 @@ namespace MobileGL {
             public:
                 SamplerState();
 
-                Vector<Uint> GenerateNames(Uint number);
-                SharedPtr<SamplerObject> GetSamplerObject(Uint index);
-                SharedPtr<SamplerObject> CreateSamplerObject(Uint index);
+                void GenerateNames(Uint number, Vector<Uint>& samplers);
+                const SharedPtr<SamplerObject>& GetSamplerObject(Uint index);
+                const SharedPtr<SamplerObject>& CreateSamplerObject(Uint index);
                 void MarkSamplerObjectForDeletion(Uint index);
                 Bool ValidateName(Uint index) const;
                 Bool ValidateSamplerObject(Uint index) const;

MobileGL/MG_State/GLState/TextureState/TextureObject.cpp

@@ -31,7 +31,7 @@ namespace MobileGL {
                 return {0, 0, 0};
             }
 
-            SharedPtr<SamplerObject> TextureObjectBase::GetSamplerObject() const {
+            const SharedPtr<SamplerObject>& TextureObjectBase::GetSamplerObject() const {
                 return m_sampler;
             }
 

MobileGL/MG_State/GLState/TextureState/TextureObject.h

@@ -14,113 +14,107 @@
 #include <Includes.h>
 #include <MG_Util/Math/VectorTypes.h>
 
-namespace MobileGL {
-    namespace MG_State {
-        namespace GLState {
-            class ITextureObject {
-            public:
-                using TargetEnum = TextureTarget;
-                virtual ~ITextureObject() = default;
+namespace MobileGL::MG_State::GLState {
+    class ITextureObject {
+    public:
+        using TargetEnum = TextureTarget;
+        virtual ~ITextureObject() = default;
 
-                virtual TextureStorageType GetStorageType() const = 0;
+        virtual TextureStorageType GetStorageType() const = 0;
 
-                virtual TextureInternalFormat GetFormat() const = 0;
-                virtual TextureTarget GetTarget() const = 0;
-                virtual const Vector<TextureUploadTarget>& GetUploadTargets() const = 0;
-                virtual IntVec3 GetBaseSize() const = 0;
-                virtual SharedPtr<SamplerObject> GetSamplerObject() const = 0;
-                virtual void SetInternalFormat(TextureInternalFormat format) = 0;
-                virtual Bool IsComplete() const = 0;
-                virtual Uint GetExternalIndex() const = 0;
-                virtual const FloatVec4& GetBorderColor() const = 0;
-                virtual void SetBorderColor(const FloatVec4& color) = 0;
-                virtual TextureSwizzleParam GetSwizzleParam(TextureSwizzleParam param) const = 0;
-                virtual void SetSwizzleParam(TextureSwizzleParam param, TextureSwizzleParam value) = 0;
-                virtual void SetSwizzleParamRGBA(const Vec4<TextureSwizzleParam>& values) = 0;
-                virtual const Vec4<TextureSwizzleParam>& GetAllSwizzleParams() const = 0;
-                virtual const UintVec2& GetLevelRange() const = 0;
-                virtual void SetBaseLevel(Uint baseLevel) = 0;
-                virtual void SetMaxLevel(Uint maxLevel) = 0;
-                virtual Uint16 GetTextureParamsVersion() const = 0;
+        virtual TextureInternalFormat GetFormat() const = 0;
+        virtual TextureTarget GetTarget() const = 0;
+        virtual const Vector<TextureUploadTarget>& GetUploadTargets() const = 0;
+        virtual IntVec3 GetBaseSize() const = 0;
+        virtual const SharedPtr<SamplerObject>& GetSamplerObject() const = 0;
+        virtual void SetInternalFormat(TextureInternalFormat format) = 0;
+        virtual Bool IsComplete() const = 0;
+        virtual Uint GetExternalIndex() const = 0;
+        virtual const FloatVec4& GetBorderColor() const = 0;
+        virtual void SetBorderColor(const FloatVec4& color) = 0;
+        virtual TextureSwizzleParam GetSwizzleParam(TextureSwizzleParam param) const = 0;
+        virtual void SetSwizzleParam(TextureSwizzleParam param, TextureSwizzleParam value) = 0;
+        virtual void SetSwizzleParamRGBA(const Vec4<TextureSwizzleParam>& values) = 0;
+        virtual const Vec4<TextureSwizzleParam>& GetAllSwizzleParams() const = 0;
+        virtual const UintVec2& GetLevelRange() const = 0;
+        virtual void SetBaseLevel(Uint baseLevel) = 0;
+        virtual void SetMaxLevel(Uint maxLevel) = 0;
+        virtual Uint16 GetTextureParamsVersion() const = 0;
 
-            protected:
-                virtual Uint GetIndexOfTextureUploadTarget(TextureUploadTarget target) const = 0;
-            };
+    protected:
+        virtual Uint GetIndexOfTextureUploadTarget(TextureUploadTarget target) const = 0;
+    };
 
-            class TextureObjectBase : public ITextureObject {
-            public:
-                TextureObjectBase(TextureTarget target, Uint externalIndex);
-                virtual ~TextureObjectBase() = default;
+    class TextureObjectBase : public ITextureObject {
+    public:
+        TextureObjectBase(TextureTarget target, Uint externalIndex);
+        virtual ~TextureObjectBase() = default;
 
-                TextureInternalFormat GetFormat() const override;
-                TextureTarget GetTarget() const override;
-                IntVec3 GetBaseSize() const override;
-                SharedPtr<SamplerObject> GetSamplerObject() const override;
-                void SetInternalFormat(TextureInternalFormat format) override;
-                Bool IsComplete() const override;
-                Uint GetExternalIndex() const override;
-                const FloatVec4& GetBorderColor() const override;
-                void SetBorderColor(const FloatVec4& color) override;
-                TextureSwizzleParam GetSwizzleParam(TextureSwizzleParam param) const override;
-                const Vec4<TextureSwizzleParam>& GetAllSwizzleParams() const override;
-                void SetSwizzleParam(TextureSwizzleParam param, TextureSwizzleParam value) override;
-                void SetSwizzleParamRGBA(const Vec4<TextureSwizzleParam>& values) override;
-                const UintVec2& GetLevelRange() const override;
-                void SetBaseLevel(Uint baseLevel) override;
-                void SetMaxLevel(Uint maxLevel) override;
-                Uint16 GetTextureParamsVersion() const override;
+        TextureInternalFormat GetFormat() const override;
+        TextureTarget GetTarget() const override;
+        IntVec3 GetBaseSize() const override;
+        const SharedPtr<SamplerObject>& GetSamplerObject() const override;
+        void SetInternalFormat(TextureInternalFormat format) override;
+        Bool IsComplete() const override;
+        Uint GetExternalIndex() const override;
+        const FloatVec4& GetBorderColor() const override;
+        void SetBorderColor(const FloatVec4& color) override;
+        TextureSwizzleParam GetSwizzleParam(TextureSwizzleParam param) const override;
+        const Vec4<TextureSwizzleParam>& GetAllSwizzleParams() const override;
+        void SetSwizzleParam(TextureSwizzleParam param, TextureSwizzleParam value) override;
+        void SetSwizzleParamRGBA(const Vec4<TextureSwizzleParam>& values) override;
+        const UintVec2& GetLevelRange() const override;
+        void SetBaseLevel(Uint baseLevel) override;
+        void SetMaxLevel(Uint maxLevel) override;
+        Uint16 GetTextureParamsVersion() const override;
 
-            protected:
-                const Uint m_externalIndex;
-                const TextureTarget m_target = TextureTarget::Unknown;
-                TextureInternalFormat m_internalFormat = TextureInternalFormat::Unknown;
-                SharedPtr<SamplerObject> m_sampler = nullptr;
-                FloatVec4 m_borderColor = {0.0f, 0.0f, 0.0f, 0.0f};
-                Vec4<TextureSwizzleParam> m_swizzleParams = {TextureSwizzleParam::Red, TextureSwizzleParam::Green,
-                                                             TextureSwizzleParam::Blue, TextureSwizzleParam::Alpha};
-                UintVec2 m_levelRange = {0, 1000};
-                Uint16 m_textureParamsVersion = 0;
-            };
+    protected:
+        const Uint m_externalIndex;
+        const TextureTarget m_target = TextureTarget::Unknown;
+        TextureInternalFormat m_internalFormat = TextureInternalFormat::Unknown;
+        SharedPtr<SamplerObject> m_sampler = nullptr;
+        FloatVec4 m_borderColor = {0.0f, 0.0f, 0.0f, 0.0f};
+        Vec4<TextureSwizzleParam> m_swizzleParams = {TextureSwizzleParam::Red, TextureSwizzleParam::Green,
+                                                     TextureSwizzleParam::Blue, TextureSwizzleParam::Alpha};
+        UintVec2 m_levelRange = {0, 1000};
+        Uint16 m_textureParamsVersion = 0;
+    };
 
-            class TextureObjectMipmap : public TextureObjectBase {
-            public:
-                TextureObjectMipmap(TextureTarget target, Uint externalIndex)
-                    : TextureObjectBase(target, externalIndex) {}
+    class TextureObjectMipmap : public TextureObjectBase {
+    public:
+        TextureObjectMipmap(TextureTarget target, Uint externalIndex) : TextureObjectBase(target, externalIndex) {}
 
-                TextureStorageType GetStorageType() const override { return TextureStorageType::Mipmap; }
+        TextureStorageType GetStorageType() const override { return TextureStorageType::Mipmap; }
 
-                virtual Uint GetMipmapLevelCount() const = 0;
-                virtual const IntVec3 GetMipmapTexelSize(TextureUploadTarget target, Uint mipmapLevel) const = 0;
-                virtual const SizeT GetMipmapByteSize(TextureUploadTarget target, Uint mipmapLevel) const = 0;
-                virtual void AllocateStorage(TextureUploadTarget uploadTarget, Uint mipmapLevel, MipmapInput input) = 0;
-                virtual void UpdateMipmapSubData(TextureUploadTarget uploadTarget, Uint mipmapLevel, DataPtr input) = 0;
-                virtual void* MapMipmapData(TextureUploadTarget uploadTarget, Uint mipmapLevel) = 0;
-                virtual void MarkStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel,
-                                              Bool dirty = true) = 0;
-                virtual Bool IsStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel) const = 0;
-            };
+        virtual Uint GetMipmapLevelCount() const = 0;
+        virtual const IntVec3 GetMipmapTexelSize(TextureUploadTarget target, Uint mipmapLevel) const = 0;
+        virtual const SizeT GetMipmapByteSize(TextureUploadTarget target, Uint mipmapLevel) const = 0;
+        virtual void AllocateStorage(TextureUploadTarget uploadTarget, Uint mipmapLevel, MipmapInput input) = 0;
+        virtual void UpdateMipmapSubData(TextureUploadTarget uploadTarget, Uint mipmapLevel, DataPtr input) = 0;
+        virtual void* MapMipmapData(TextureUploadTarget uploadTarget, Uint mipmapLevel) = 0;
+        virtual void MarkStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel, Bool dirty = true) = 0;
+        virtual Bool IsStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel) const = 0;
+    };
 
-            class TextureObjectWithOneMipmap : public TextureObjectMipmap {
-            public:
-                TextureObjectWithOneMipmap(TextureTarget target, Uint externalIndex)
-                    : TextureObjectMipmap(target, externalIndex) {}
-                virtual ~TextureObjectWithOneMipmap() = default;
+    class TextureObjectWithOneMipmap : public TextureObjectMipmap {
+    public:
+        TextureObjectWithOneMipmap(TextureTarget target, Uint externalIndex)
+            : TextureObjectMipmap(target, externalIndex) {}
+        virtual ~TextureObjectWithOneMipmap() = default;
 
-                Uint GetMipmapLevelCount() const override;
-                const IntVec3 GetMipmapTexelSize(TextureUploadTarget target, Uint mipmapLevel) const override;
-                const SizeT GetMipmapByteSize(TextureUploadTarget target, Uint mipmapLevel) const override;
-                void AllocateStorage(TextureUploadTarget uploadTarget, Uint mipmapLevel, MipmapInput input) override;
-                void UpdateMipmapSubData(TextureUploadTarget uploadTarget, Uint mipmapLevel, DataPtr input) override;
-                void* MapMipmapData(TextureUploadTarget uploadTarget, Uint mipmapLevel) override;
-                void MarkStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel, Bool dirty) override;
-                bool IsStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel) const override;
+        Uint GetMipmapLevelCount() const override;
+        const IntVec3 GetMipmapTexelSize(TextureUploadTarget target, Uint mipmapLevel) const override;
+        const SizeT GetMipmapByteSize(TextureUploadTarget target, Uint mipmapLevel) const override;
+        void AllocateStorage(TextureUploadTarget uploadTarget, Uint mipmapLevel, MipmapInput input) override;
+        void UpdateMipmapSubData(TextureUploadTarget uploadTarget, Uint mipmapLevel, DataPtr input) override;
+        void* MapMipmapData(TextureUploadTarget uploadTarget, Uint mipmapLevel) override;
+        void MarkStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel, Bool dirty) override;
+        bool IsStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel) const override;
 
-                IntVec3 GetBaseSize() const override;
-                Bool IsComplete() const override;
+        IntVec3 GetBaseSize() const override;
+        Bool IsComplete() const override;
 
-            protected:
-                MipmapUploadTargetArray<1> m_textureStorage;
-            };
-        } // namespace GLState
-    } // namespace MG_State
-} // namespace MobileGL
+    protected:
+        MipmapUploadTargetArray<1> m_textureStorage;
+    };
+} // namespace MobileGL::MG_State::GLState

MobileGL/MG_State/GLState/TextureState/TextureObjectBuffer.h

@@ -8,7 +8,7 @@
 
 #pragma once
 #include "TextureObject.h"
-#include "MG_State/GLState/BufferState/BufferObject.h"
+#include <MG_State/GLState/BufferState/BufferObject.h>
 
 namespace MobileGL {
     namespace MG_State {