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MobileGL/MobileGL/MG_Util/BackendLoaders/OpenGL/Loader.cpp
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// MobileGL - MobileGL/MG_Util/BackendLoaders/OpenGL/Loader.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 "Loader.h"
#include "MG_Util/Types.h"
#include <Config.h>
#if !defined(__WIN32) && !defined(_WIN32)
#include <dlfcn.h>
#endif
namespace MobileGL::MG_Util::BackendLoader {
static Bool UseAngle() {
return MG_Config::Features.UseAngle;
}
#if defined(MOBILEGL_TRACE_ANGLE_VARIANTS) && defined(__ANDROID__)
static Bool IsTraceAngleLibrary(const String& name) {
return name == "libGLESv2_angle.so" || name == "libEGL_angle.so";
}
static Bool IsAllowedTraceAngleVariant(const String& variant) {
return variant == "ec889e6ea831" || variant == "90a62123d794";
}
static Bool ResolveTraceAngleLibraryPath(const String& name, String& path) {
const String& variant = MG_Config::Features.TraceAngleVariant;
if (!IsAllowedTraceAngleVariant(variant)) {
MGLOG_F("Rejected trace ANGLE variant '%s'", variant.c_str());
return false;
}
Dl_info mobileGlInfo{};
if (dladdr(reinterpret_cast<const void*>(&ResolveTraceAngleLibraryPath), &mobileGlInfo) == 0 ||
mobileGlInfo.dli_fname == nullptr) {
MGLOG_F("Failed to resolve signed trace native library directory");
return false;
}
String nativeLibraryPath = mobileGlInfo.dli_fname;
const SizeT separator = nativeLibraryPath.find_last_of('/');
if (separator == String::npos) {
MGLOG_F("Invalid MobileGL library path: %s", nativeLibraryPath.c_str());
return false;
}
const SizeT extension = name.rfind(".so");
if (extension == String::npos) {
MGLOG_F("Invalid trace ANGLE library name: %s", name.c_str());
return false;
}
path = nativeLibraryPath.substr(0, separator + 1) + name.substr(0, extension) + "_" + variant + ".so";
return true;
}
#endif
static void* OpenLib(const Vector<String>& names) {
#if !defined(__WIN32) && !defined(_WIN32) && (!defined(__APPLE__) || defined(MOBILEGL_IOS))
static const String LibPathPrefixes[] = {
#if defined(MOBILEGL_IOS)
"@rpath/", "@executable_path/Frameworks/", "@loader_path/Frameworks/",
#else
"/opt/vc/lib/", "/usr/local/lib/", "/usr/lib/", "/usr/lib/x86_64-linux-gnu/",
"/usr/lib64/", "/lib64/",
#endif
"" // Keep this last so the dynamic loader can use LD_LIBRARY_PATH.
};
void* lib = nullptr;
Int flags = RTLD_LOCAL | RTLD_NOW;
for (const auto& prefix : LibPathPrefixes) {
for (const auto& name : names) {
#if defined(MOBILEGL_TRACE_ANGLE_VARIANTS) && defined(__ANDROID__)
if (UseAngle() && IsTraceAngleLibrary(name)) {
String signedPath;
if (!ResolveTraceAngleLibraryPath(name, signedPath)) {
return nullptr;
}
lib = dlopen(signedPath.c_str(), flags);
if (lib == nullptr) {
MGLOG_F("Failed to open signed trace ANGLE library %s: %s",
signedPath.c_str(), dlerror());
return nullptr;
}
MGLOG_I("Loaded signed trace ANGLE library: %s", signedPath.c_str());
return lib;
}
#endif
String path_name = prefix + name;
if ((lib = dlopen(path_name.c_str(), flags))) {
MGLOG_I("Loaded GL backend library: %s", path_name.c_str());
return lib;
}
}
}
#endif
return nullptr;
}
inline void* ProcAddress(void* lib, const char* name) {
#if !defined(__WIN32) && !defined(_WIN32) && (!defined(__APPLE__) || defined(MOBILEGL_IOS))
return dlsym(lib, name);
#else
return nullptr;
#endif
}
void AcquireGLESFunctions(MG_External::GLESFunctionsTable& funcs,
MG_External::EGL::eglGetProcAddress_PTR procAddress) {
if (!procAddress) {
MGLOG_E("eglGetProcAddress is nullptr, cannot load GLES functions");
return;
}
#define INIT_GLES_FUNC(name) \
do { \
funcs.name = (MG_External::GLES::name##_PTR)procAddress(#name); \
if (!funcs.name) { \
MGLOG_E("Failed to load GLES function: %s", #name); \
} \
} while (0);
// Optional (extension-provided) entry points: a null pointer is expected on drivers that lack the
// extension, so absence is not an error. The call site null-checks before use.
#define INIT_GLES_FUNC_OPTIONAL(name) \
do { \
funcs.name = (MG_External::GLES::name##_PTR)procAddress(#name); \
} while (0);
{
INIT_GLES_FUNC(glActiveTexture)
INIT_GLES_FUNC(glAttachShader)
INIT_GLES_FUNC(glBindAttribLocation)
INIT_GLES_FUNC(glBindBuffer)
INIT_GLES_FUNC(glBindFramebuffer)
INIT_GLES_FUNC(glBindRenderbuffer)
INIT_GLES_FUNC(glBindTexture)
INIT_GLES_FUNC(glBlendColor)
INIT_GLES_FUNC(glBlendEquation)
INIT_GLES_FUNC(glBlendEquationSeparate)
INIT_GLES_FUNC(glBlendFunc)
INIT_GLES_FUNC(glBlendFuncSeparate)
INIT_GLES_FUNC(glBufferData)
INIT_GLES_FUNC(glBufferSubData)
INIT_GLES_FUNC(glCheckFramebufferStatus)
INIT_GLES_FUNC(glClear)
INIT_GLES_FUNC(glClearColor)
INIT_GLES_FUNC(glClearDepthf)
INIT_GLES_FUNC(glClearStencil)
INIT_GLES_FUNC(glColorMask)
INIT_GLES_FUNC(glCompileShader)
INIT_GLES_FUNC(glCompressedTexImage2D)
INIT_GLES_FUNC(glCompressedTexSubImage2D)
// INIT_GLES_FUNC(glCopyTexImage1D)
INIT_GLES_FUNC(glCopyTexImage2D)
INIT_GLES_FUNC(glCopyTexSubImage2D)
INIT_GLES_FUNC(glCreateProgram)
INIT_GLES_FUNC(glCreateShader)
INIT_GLES_FUNC(glCullFace)
INIT_GLES_FUNC(glDeleteBuffers)
INIT_GLES_FUNC(glDeleteFramebuffers)
INIT_GLES_FUNC(glDeleteProgram)
INIT_GLES_FUNC(glDeleteRenderbuffers)
INIT_GLES_FUNC(glDeleteShader)
INIT_GLES_FUNC(glDeleteTextures)
INIT_GLES_FUNC(glDepthFunc)
INIT_GLES_FUNC(glDepthMask)
INIT_GLES_FUNC(glDepthRangef)
INIT_GLES_FUNC(glDetachShader)
INIT_GLES_FUNC(glDisable)
INIT_GLES_FUNC(glDisableVertexAttribArray)
INIT_GLES_FUNC(glDrawArrays)
INIT_GLES_FUNC(glDrawElements)
INIT_GLES_FUNC(glEnable)
INIT_GLES_FUNC(glEnableVertexAttribArray)
INIT_GLES_FUNC(glFinish)
INIT_GLES_FUNC(glFlush)
INIT_GLES_FUNC(glFramebufferRenderbuffer)
INIT_GLES_FUNC(glFramebufferTexture2D)
INIT_GLES_FUNC(glFrontFace)
INIT_GLES_FUNC(glGenBuffers)
INIT_GLES_FUNC(glGenerateMipmap)
INIT_GLES_FUNC(glGenFramebuffers)
INIT_GLES_FUNC(glGenRenderbuffers)
INIT_GLES_FUNC(glGenTextures)
INIT_GLES_FUNC(glGetActiveAttrib)
INIT_GLES_FUNC(glGetActiveUniform)
INIT_GLES_FUNC(glGetAttachedShaders)
INIT_GLES_FUNC(glGetAttribLocation)
INIT_GLES_FUNC(glGetBooleanv)
INIT_GLES_FUNC(glGetBufferParameteriv)
INIT_GLES_FUNC(glGetError)
INIT_GLES_FUNC(glGetString)
INIT_GLES_FUNC(glGetStringi)
INIT_GLES_FUNC(glGetFloatv)
INIT_GLES_FUNC(glGetFramebufferAttachmentParameteriv)
INIT_GLES_FUNC(glGetIntegerv)
INIT_GLES_FUNC(glGetProgramiv)
INIT_GLES_FUNC(glGetProgramInfoLog)
INIT_GLES_FUNC(glGetRenderbufferParameteriv)
INIT_GLES_FUNC(glGetShaderiv)
INIT_GLES_FUNC(glGetShaderInfoLog)
INIT_GLES_FUNC(glGetShaderPrecisionFormat)
INIT_GLES_FUNC(glGetShaderSource)
INIT_GLES_FUNC(glGetTexParameterfv)
INIT_GLES_FUNC(glGetTexParameteriv)
INIT_GLES_FUNC(glGetUniformfv)
INIT_GLES_FUNC(glGetUniformiv)
INIT_GLES_FUNC(glGetUniformLocation)
INIT_GLES_FUNC(glGetVertexAttribfv)
INIT_GLES_FUNC(glGetVertexAttribiv)
INIT_GLES_FUNC(glGetVertexAttribPointerv)
INIT_GLES_FUNC(glHint)
INIT_GLES_FUNC(glIsBuffer)
INIT_GLES_FUNC(glIsEnabled)
INIT_GLES_FUNC(glIsFramebuffer)
INIT_GLES_FUNC(glIsProgram)
INIT_GLES_FUNC(glIsRenderbuffer)
INIT_GLES_FUNC(glIsShader)
INIT_GLES_FUNC(glIsTexture)
INIT_GLES_FUNC(glLineWidth)
INIT_GLES_FUNC(glLinkProgram)
INIT_GLES_FUNC(glLogicOp)
INIT_GLES_FUNC(glPointSize)
INIT_GLES_FUNC(glPixelStorei)
INIT_GLES_FUNC(glPolygonOffset)
INIT_GLES_FUNC(glReadPixels)
INIT_GLES_FUNC(glReleaseShaderCompiler)
INIT_GLES_FUNC(glRenderbufferStorage)
INIT_GLES_FUNC(glSampleCoverage)
INIT_GLES_FUNC(glScissor)
INIT_GLES_FUNC(glShaderBinary)
INIT_GLES_FUNC(glShaderSource)
INIT_GLES_FUNC(glStencilFunc)
INIT_GLES_FUNC(glStencilFuncSeparate)
INIT_GLES_FUNC(glStencilMask)
INIT_GLES_FUNC(glStencilMaskSeparate)
INIT_GLES_FUNC(glStencilOp)
INIT_GLES_FUNC(glStencilOpSeparate)
// INIT_GLES_FUNC(glTexImage1D)
INIT_GLES_FUNC(glTexImage2D)
// INIT_GLES_FUNC(glTexStorage1D)
INIT_GLES_FUNC(glTexParameterf)
INIT_GLES_FUNC(glTexParameterfv)
INIT_GLES_FUNC(glTexParameteri)
INIT_GLES_FUNC(glTexParameteriv)
INIT_GLES_FUNC(glTexSubImage2D)
INIT_GLES_FUNC(glUniform1f)
INIT_GLES_FUNC(glUniform1fv)
INIT_GLES_FUNC(glUniform1i)
INIT_GLES_FUNC(glUniform1iv)
INIT_GLES_FUNC(glUniform2f)
INIT_GLES_FUNC(glUniform2fv)
INIT_GLES_FUNC(glUniform2i)
INIT_GLES_FUNC(glUniform2iv)
INIT_GLES_FUNC(glUniform3f)
INIT_GLES_FUNC(glUniform3fv)
INIT_GLES_FUNC(glUniform3i)
INIT_GLES_FUNC(glUniform3iv)
INIT_GLES_FUNC(glUniform4f)
INIT_GLES_FUNC(glUniform4fv)
INIT_GLES_FUNC(glUniform4i)
INIT_GLES_FUNC(glUniform4iv)
INIT_GLES_FUNC(glUniformMatrix2fv)
INIT_GLES_FUNC(glUniformMatrix3fv)
INIT_GLES_FUNC(glUniformMatrix4fv)
INIT_GLES_FUNC(glUseProgram)
INIT_GLES_FUNC(glValidateProgram)
INIT_GLES_FUNC(glVertexAttrib1f)
INIT_GLES_FUNC(glVertexAttrib1fv)
INIT_GLES_FUNC(glVertexAttrib2f)
INIT_GLES_FUNC(glVertexAttrib2fv)
INIT_GLES_FUNC(glVertexAttrib3f)
INIT_GLES_FUNC(glVertexAttrib3fv)
INIT_GLES_FUNC(glVertexAttrib4f)
INIT_GLES_FUNC(glVertexAttrib4fv)
INIT_GLES_FUNC(glVertexAttribPointer)
INIT_GLES_FUNC(glViewport)
INIT_GLES_FUNC(glReadBuffer)
INIT_GLES_FUNC(glDrawRangeElements)
INIT_GLES_FUNC(glTexImage3D)
INIT_GLES_FUNC(glTexSubImage3D)
INIT_GLES_FUNC(glCopyTexSubImage3D)
INIT_GLES_FUNC(glCompressedTexImage3D)
INIT_GLES_FUNC(glCompressedTexSubImage3D)
INIT_GLES_FUNC(glGenQueries)
INIT_GLES_FUNC(glDeleteQueries)
INIT_GLES_FUNC(glIsQuery)
INIT_GLES_FUNC(glBeginQuery)
INIT_GLES_FUNC(glEndQuery)
INIT_GLES_FUNC(glGetQueryiv)
INIT_GLES_FUNC(glGetQueryObjectuiv)
INIT_GLES_FUNC(glUnmapBuffer)
INIT_GLES_FUNC(glGetBufferPointerv)
INIT_GLES_FUNC(glDrawBuffers)
INIT_GLES_FUNC(glUniformMatrix2x3fv)
INIT_GLES_FUNC(glUniformMatrix3x2fv)
INIT_GLES_FUNC(glUniformMatrix2x4fv)
INIT_GLES_FUNC(glUniformMatrix4x2fv)
INIT_GLES_FUNC(glUniformMatrix3x4fv)
INIT_GLES_FUNC(glUniformMatrix4x3fv)
INIT_GLES_FUNC(glBlitFramebuffer)
INIT_GLES_FUNC(glRenderbufferStorageMultisample)
INIT_GLES_FUNC(glFramebufferTextureLayer)
INIT_GLES_FUNC(glFlushMappedBufferRange)
INIT_GLES_FUNC(glBindVertexArray)
INIT_GLES_FUNC(glDeleteVertexArrays)
INIT_GLES_FUNC(glGenVertexArrays)
INIT_GLES_FUNC(glIsVertexArray)
INIT_GLES_FUNC(glGetIntegeri_v)
INIT_GLES_FUNC(glBeginTransformFeedback)
INIT_GLES_FUNC(glEndTransformFeedback)
INIT_GLES_FUNC(glBindBufferRange)
INIT_GLES_FUNC(glBindBufferBase)
INIT_GLES_FUNC(glTransformFeedbackVaryings)
INIT_GLES_FUNC(glGetTransformFeedbackVarying)
INIT_GLES_FUNC(glVertexAttribIPointer)
INIT_GLES_FUNC(glGetVertexAttribIiv)
INIT_GLES_FUNC(glGetVertexAttribIuiv)
INIT_GLES_FUNC(glVertexAttribI4i)
INIT_GLES_FUNC(glVertexAttribI4ui)
INIT_GLES_FUNC(glVertexAttribI4iv)
INIT_GLES_FUNC(glVertexAttribI4uiv)
INIT_GLES_FUNC(glGetUniformuiv)
INIT_GLES_FUNC(glGetFragDataLocation)
INIT_GLES_FUNC(glUniform1ui)
INIT_GLES_FUNC(glUniform2ui)
INIT_GLES_FUNC(glUniform3ui)
INIT_GLES_FUNC(glUniform4ui)
INIT_GLES_FUNC(glUniform1uiv)
INIT_GLES_FUNC(glUniform2uiv)
INIT_GLES_FUNC(glUniform3uiv)
INIT_GLES_FUNC(glUniform4uiv)
INIT_GLES_FUNC(glClearBufferiv)
INIT_GLES_FUNC(glClearBufferuiv)
INIT_GLES_FUNC(glClearBufferfv)
INIT_GLES_FUNC(glClearBufferfi)
INIT_GLES_FUNC(glCopyBufferSubData)
INIT_GLES_FUNC(glGetUniformIndices)
INIT_GLES_FUNC(glGetActiveUniformsiv)
INIT_GLES_FUNC(glGetUniformBlockIndex)
INIT_GLES_FUNC(glGetActiveUniformBlockiv)
INIT_GLES_FUNC(glGetActiveUniformBlockName)
INIT_GLES_FUNC(glUniformBlockBinding)
INIT_GLES_FUNC(glDrawArraysInstanced)
INIT_GLES_FUNC(glDrawElementsInstanced)
INIT_GLES_FUNC(glFenceSync)
INIT_GLES_FUNC(glIsSync)
INIT_GLES_FUNC(glDeleteSync)
INIT_GLES_FUNC(glClientWaitSync)
INIT_GLES_FUNC(glWaitSync)
INIT_GLES_FUNC(glGetInteger64v)
INIT_GLES_FUNC(glGetSynciv)
INIT_GLES_FUNC(glGetInteger64i_v)
INIT_GLES_FUNC(glGetBufferParameteri64v)
INIT_GLES_FUNC(glGenSamplers)
INIT_GLES_FUNC(glDeleteSamplers)
INIT_GLES_FUNC(glIsSampler)
INIT_GLES_FUNC(glBindSampler)
INIT_GLES_FUNC(glSamplerParameteri)
INIT_GLES_FUNC(glSamplerParameteriv)
INIT_GLES_FUNC(glSamplerParameterf)
INIT_GLES_FUNC(glSamplerParameterfv)
INIT_GLES_FUNC(glGetSamplerParameteriv)
INIT_GLES_FUNC(glGetSamplerParameterfv)
INIT_GLES_FUNC(glVertexAttribDivisor)
INIT_GLES_FUNC(glBindTransformFeedback)
INIT_GLES_FUNC(glDeleteTransformFeedbacks)
INIT_GLES_FUNC(glGenTransformFeedbacks)
INIT_GLES_FUNC(glIsTransformFeedback)
INIT_GLES_FUNC(glPauseTransformFeedback)
INIT_GLES_FUNC(glResumeTransformFeedback)
INIT_GLES_FUNC(glGetProgramBinary)
INIT_GLES_FUNC(glProgramBinary)
INIT_GLES_FUNC(glProgramParameteri)
INIT_GLES_FUNC(glInvalidateFramebuffer)
INIT_GLES_FUNC(glInvalidateSubFramebuffer)
INIT_GLES_FUNC(glTexStorage2D)
INIT_GLES_FUNC(glTexStorage3D)
INIT_GLES_FUNC(glGetInternalformativ)
INIT_GLES_FUNC(glDispatchCompute)
INIT_GLES_FUNC(glDispatchComputeIndirect)
INIT_GLES_FUNC(glDrawArraysIndirect)
INIT_GLES_FUNC(glDrawElementsIndirect)
INIT_GLES_FUNC(glFramebufferParameteri)
INIT_GLES_FUNC(glGetFramebufferParameteriv)
INIT_GLES_FUNC(glGetProgramInterfaceiv)
INIT_GLES_FUNC(glShaderStorageBlockBinding)
INIT_GLES_FUNC(glGetProgramResourceIndex)
INIT_GLES_FUNC(glGetProgramResourceName)
INIT_GLES_FUNC(glGetProgramResourceiv)
INIT_GLES_FUNC(glGetProgramResourceLocation)
INIT_GLES_FUNC(glUseProgramStages)
INIT_GLES_FUNC(glActiveShaderProgram)
INIT_GLES_FUNC(glCreateShaderProgramv)
INIT_GLES_FUNC(glBindProgramPipeline)
INIT_GLES_FUNC(glDeleteProgramPipelines)
INIT_GLES_FUNC(glGenProgramPipelines)
INIT_GLES_FUNC(glIsProgramPipeline)
INIT_GLES_FUNC(glGetProgramPipelineiv)
INIT_GLES_FUNC(glProgramUniform1i)
INIT_GLES_FUNC(glProgramUniform2i)
INIT_GLES_FUNC(glProgramUniform3i)
INIT_GLES_FUNC(glProgramUniform4i)
INIT_GLES_FUNC(glProgramUniform1ui)
INIT_GLES_FUNC(glProgramUniform2ui)
INIT_GLES_FUNC(glProgramUniform3ui)
INIT_GLES_FUNC(glProgramUniform4ui)
INIT_GLES_FUNC(glProgramUniform1f)
INIT_GLES_FUNC(glProgramUniform2f)
INIT_GLES_FUNC(glProgramUniform3f)
INIT_GLES_FUNC(glProgramUniform4f)
INIT_GLES_FUNC(glProgramUniform1iv)
INIT_GLES_FUNC(glProgramUniform2iv)
INIT_GLES_FUNC(glProgramUniform3iv)
INIT_GLES_FUNC(glProgramUniform4iv)
INIT_GLES_FUNC(glProgramUniform1uiv)
INIT_GLES_FUNC(glProgramUniform2uiv)
INIT_GLES_FUNC(glProgramUniform3uiv)
INIT_GLES_FUNC(glProgramUniform4uiv)
INIT_GLES_FUNC(glProgramUniform1fv)
INIT_GLES_FUNC(glProgramUniform2fv)
INIT_GLES_FUNC(glProgramUniform3fv)
INIT_GLES_FUNC(glProgramUniform4fv)
INIT_GLES_FUNC(glProgramUniformMatrix2fv)
INIT_GLES_FUNC(glProgramUniformMatrix3fv)
INIT_GLES_FUNC(glProgramUniformMatrix4fv)
INIT_GLES_FUNC(glProgramUniformMatrix2x3fv)
INIT_GLES_FUNC(glProgramUniformMatrix3x2fv)
INIT_GLES_FUNC(glProgramUniformMatrix2x4fv)
INIT_GLES_FUNC(glProgramUniformMatrix4x2fv)
INIT_GLES_FUNC(glProgramUniformMatrix3x4fv)
INIT_GLES_FUNC(glProgramUniformMatrix4x3fv)
INIT_GLES_FUNC(glValidateProgramPipeline)
INIT_GLES_FUNC(glGetProgramPipelineInfoLog)
INIT_GLES_FUNC(glBindImageTexture)
INIT_GLES_FUNC(glGetBooleani_v)
INIT_GLES_FUNC(glMemoryBarrier)
INIT_GLES_FUNC(glMemoryBarrierByRegion)
INIT_GLES_FUNC(glTexStorage2DMultisample)
INIT_GLES_FUNC(glGetMultisamplefv)
INIT_GLES_FUNC(glSampleMaski)
INIT_GLES_FUNC(glGetTexLevelParameteriv)
INIT_GLES_FUNC(glGetTexLevelParameterfv)
INIT_GLES_FUNC(glBindVertexBuffer)
INIT_GLES_FUNC(glVertexAttribFormat)
INIT_GLES_FUNC(glVertexAttribIFormat)
INIT_GLES_FUNC(glVertexAttribBinding)
INIT_GLES_FUNC(glVertexBindingDivisor)
INIT_GLES_FUNC(glBlendBarrier)
INIT_GLES_FUNC(glCopyImageSubData)
INIT_GLES_FUNC(glDebugMessageControl)
INIT_GLES_FUNC(glDebugMessageInsert)
INIT_GLES_FUNC(glDebugMessageCallback)
INIT_GLES_FUNC(glGetDebugMessageLog)
INIT_GLES_FUNC(glPushDebugGroup)
INIT_GLES_FUNC(glPopDebugGroup)
INIT_GLES_FUNC(glObjectLabel)
INIT_GLES_FUNC(glGetObjectLabel)
INIT_GLES_FUNC(glObjectPtrLabel)
INIT_GLES_FUNC(glGetObjectPtrLabel)
INIT_GLES_FUNC(glGetPointerv)
INIT_GLES_FUNC(glEnablei)
INIT_GLES_FUNC(glDisablei)
INIT_GLES_FUNC(glBlendEquationi)
INIT_GLES_FUNC(glBlendEquationSeparatei)
INIT_GLES_FUNC(glBlendFunci)
INIT_GLES_FUNC(glBlendFuncSeparatei)
INIT_GLES_FUNC(glColorMaski)
INIT_GLES_FUNC(glIsEnabledi)
INIT_GLES_FUNC(glDrawElementsBaseVertex)
INIT_GLES_FUNC(glDrawRangeElementsBaseVertex)
INIT_GLES_FUNC(glDrawElementsInstancedBaseVertex)
INIT_GLES_FUNC(glFramebufferTexture)
INIT_GLES_FUNC(glPrimitiveBoundingBox)
INIT_GLES_FUNC(glGetGraphicsResetStatus)
INIT_GLES_FUNC(glReadnPixels)
INIT_GLES_FUNC(glGetnUniformfv)
INIT_GLES_FUNC(glGetnUniformiv)
INIT_GLES_FUNC(glGetnUniformuiv)
INIT_GLES_FUNC(glMinSampleShading)
INIT_GLES_FUNC(glPatchParameteri)
INIT_GLES_FUNC(glTexParameterIiv)
INIT_GLES_FUNC(glTexParameterIuiv)
INIT_GLES_FUNC(glGetTexParameterIiv)
INIT_GLES_FUNC(glGetTexParameterIuiv)
INIT_GLES_FUNC(glSamplerParameterIiv)
INIT_GLES_FUNC(glSamplerParameterIuiv)
INIT_GLES_FUNC(glGetSamplerParameterIiv)
INIT_GLES_FUNC(glGetSamplerParameterIuiv)
INIT_GLES_FUNC(glTexBuffer)
INIT_GLES_FUNC(glTexBufferRange)
INIT_GLES_FUNC(glTexStorage3DMultisample)
INIT_GLES_FUNC(glMapBufferRange)
INIT_GLES_FUNC(glBufferStorageEXT)
INIT_GLES_FUNC(glGetQueryObjectivEXT)
INIT_GLES_FUNC(glGetQueryObjecti64vEXT)
INIT_GLES_FUNC(glQueryCounterEXT)
INIT_GLES_FUNC(glGetQueryObjectui64vEXT)
INIT_GLES_FUNC(glBindFragDataLocationEXT)
INIT_GLES_FUNC(glMapBufferOES)
INIT_GLES_FUNC_OPTIONAL(glPolygonModeNV)
INIT_GLES_FUNC_OPTIONAL(glPolygonModeANGLE)
INIT_GLES_FUNC_OPTIONAL(glColorMaskiEXT)
INIT_GLES_FUNC_OPTIONAL(glColorMaskiOES)
INIT_GLES_FUNC(glMultiDrawArraysIndirectEXT)
INIT_GLES_FUNC(glMultiDrawElementsIndirectEXT)
INIT_GLES_FUNC(glMultiDrawElementsBaseVertexEXT)
}
}
void AcquireEGLFunctions(MG_External::EGLFunctionsTable& funcs) {
void* eglLib = nullptr;
#if defined(MOBILEGL_TRACE_ANGLE_VARIANTS) && defined(__ANDROID__)
void* angleGlesLib = nullptr;
#endif
if (UseAngle()) {
void* glesLib = OpenLib({"libGLESv2_angle.so"});
if (!glesLib) {
MGLOG_E("Failed to open ANGLE libGLESv2_angle.so");
return;
}
#if defined(MOBILEGL_TRACE_ANGLE_VARIANTS) && defined(__ANDROID__)
angleGlesLib = glesLib;
#endif
eglLib = OpenLib({"libEGL_angle.so"});
if (!eglLib) {
MGLOG_E("Failed to open ANGLE libEGL_angle.so");
return;
}
} else {
#if defined(MOBILEGL_IOS)
eglLib = OpenLib({"libtinygl4angle.dylib"});
#else
eglLib = OpenLib({"libEGL.so"});
#endif
}
if (!eglLib) {
MGLOG_E("Failed to open EGL library");
return;
}
auto resolveEGLProc = [&](const char* name) -> void* {
#if defined(MOBILEGL_TRACE_ANGLE_VARIANTS) && defined(__ANDROID__)
if (UseAngle()) {
// Avoid the wrapper's canonical libGLESv2_angle.so lookup:
// resolve its forwarding target from the verified variant.
String target = "EGL_";
target += name + 3;
return ProcAddress(angleGlesLib, target.c_str());
}
#endif
return ProcAddress(eglLib, name);
};
#define INIT_EGL_FUNC(name) \
do { \
funcs.name = (MG_External::EGL::name##_PTR)resolveEGLProc(#name); \
if (!funcs.name) { \
MGLOG_E("Failed to load EGL function: %s", #name); \
} \
} while (0);
{
INIT_EGL_FUNC(eglBindAPI)
INIT_EGL_FUNC(eglBindTexImage)
INIT_EGL_FUNC(eglChooseConfig)
INIT_EGL_FUNC(eglCopyBuffers)
INIT_EGL_FUNC(eglCreateContext)
INIT_EGL_FUNC(eglCreatePbufferFromClientBuffer)
INIT_EGL_FUNC(eglCreatePbufferSurface)
INIT_EGL_FUNC(eglCreatePixmapSurface)
INIT_EGL_FUNC(eglCreatePlatformPixmapSurface)
INIT_EGL_FUNC(eglCreatePlatformWindowSurface)
INIT_EGL_FUNC(eglCreateWindowSurface)
INIT_EGL_FUNC(eglDestroyContext)
INIT_EGL_FUNC(eglDestroySurface)
INIT_EGL_FUNC(eglGetConfigAttrib)
INIT_EGL_FUNC(eglGetConfigs)
INIT_EGL_FUNC(eglGetCurrentContext)
INIT_EGL_FUNC(eglGetCurrentDisplay)
INIT_EGL_FUNC(eglGetCurrentSurface)
INIT_EGL_FUNC(eglGetDisplay)
INIT_EGL_FUNC(eglGetPlatformDisplay)
INIT_EGL_FUNC(eglGetError)
INIT_EGL_FUNC(eglGetProcAddress)
INIT_EGL_FUNC(eglInitialize)
INIT_EGL_FUNC(eglMakeCurrent)
INIT_EGL_FUNC(eglQueryAPI)
INIT_EGL_FUNC(eglQueryContext)
INIT_EGL_FUNC(eglQueryString)
INIT_EGL_FUNC(eglQuerySurface)
INIT_EGL_FUNC(eglReleaseTexImage)
INIT_EGL_FUNC(eglReleaseThread)
INIT_EGL_FUNC(eglSurfaceAttrib)
INIT_EGL_FUNC(eglSwapBuffers)
INIT_EGL_FUNC(eglSwapBuffersWithDamageEXT)
INIT_EGL_FUNC(eglSwapInterval)
INIT_EGL_FUNC(eglTerminate)
INIT_EGL_FUNC(eglUnlockSurfaceKHR)
INIT_EGL_FUNC(eglWaitClient)
INIT_EGL_FUNC(eglWaitGL)
INIT_EGL_FUNC(eglWaitNative)
INIT_EGL_FUNC(eglCreateSync)
INIT_EGL_FUNC(eglDestroySync)
INIT_EGL_FUNC(eglClientWaitSync)
INIT_EGL_FUNC(eglGetSyncAttrib)
INIT_EGL_FUNC(eglCreateImage)
INIT_EGL_FUNC(eglDestroyImage)
INIT_EGL_FUNC(eglGetPlatformDisplay)
INIT_EGL_FUNC(eglWaitSync)
}
}
// Detects whether indirect draws leak the command's baseInstance word ("reserved, must
// be zero" in unextended ES) into gl_InstanceID. Conforming ES drivers keep
// gl_InstanceID zero-based, but ANGLE's Vulkan backend forwards the command verbatim to
// vkCmdDraw*Indirect and compiles gl_InstanceID to SPIR-V InstanceIndex, which includes
// firstInstance. The DirectGLES native indirect-draw path uses this answer to keep
// gl_InstanceID zero-based in rewritten shaders (PromoteDrawParameterGlobalsToUniforms).
Bool ProbeIndirectInstanceIdIncludesBaseInstance(const MG_External::GLESCapabilities& caps,
const MG_External::GLESFunctionsTable& f) {
const Bool esVersionOk =
caps.GLESVersion.Major > 3 || (caps.GLESVersion.Major == 3 && caps.GLESVersion.Minor >= 1);
if (!esVersionOk || !f.glDrawArraysIndirect || !f.glBindBufferBase || !f.glMapBufferRange ||
!f.glUnmapBuffer || !f.glMemoryBarrier || !f.glCreateShader || !f.glCreateProgram) {
return false;
}
GLint maxVertexSsboBlocks = 0;
f.glGetIntegerv(GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS, &maxVertexSsboBlocks);
if (maxVertexSsboBlocks < 1) {
// The native indirect machinery cannot read the command buffer from the vertex
// stage on this driver anyway; assume conforming zero-based gl_InstanceID.
MGLOG_I("baseInstance probe skipped: GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS = %d", maxVertexSsboBlocks);
return false;
}
while (f.glGetError() != GL_NO_ERROR) {
}
const char* vsSource = "#version 310 es\n"
"layout(std430, binding = 0) buffer MgProbeResult { highp int mg_probeValue; };\n"
"void main() {\n"
" mg_probeValue = gl_InstanceID;\n"
" gl_Position = vec4(0.0, 0.0, 0.0, 1.0);\n"
" gl_PointSize = 1.0;\n"
"}\n";
const char* fsSource = "#version 310 es\n"
"void main() {}\n";
const auto compileShader = [&f](GLenum type, const char* src) -> GLuint {
const GLuint shader = f.glCreateShader(type);
if (shader == 0) {
return 0;
}
f.glShaderSource(shader, 1, &src, nullptr);
f.glCompileShader(shader);
GLint status = GL_FALSE;
f.glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
if (status != GL_TRUE) {
f.glDeleteShader(shader);
return 0;
}
return shader;
};
const GLuint vs = compileShader(GL_VERTEX_SHADER, vsSource);
const GLuint fs = compileShader(GL_FRAGMENT_SHADER, fsSource);
GLuint program = 0;
if (vs != 0 && fs != 0) {
program = f.glCreateProgram();
if (program != 0) {
f.glAttachShader(program, vs);
f.glAttachShader(program, fs);
f.glLinkProgram(program);
GLint status = GL_FALSE;
f.glGetProgramiv(program, GL_LINK_STATUS, &status);
if (status != GL_TRUE) {
f.glDeleteProgram(program);
program = 0;
}
}
}
if (vs != 0) f.glDeleteShader(vs);
if (fs != 0) f.glDeleteShader(fs);
if (program == 0) {
MGLOG_I("baseInstance probe skipped: probe program failed to build (vs=%u fs=%u)", vs, fs);
while (f.glGetError() != GL_NO_ERROR) {
}
return false;
}
constexpr GLuint kProbeBaseInstance = 7;
struct {
GLuint count;
GLuint instanceCount;
GLuint first;
GLuint baseInstance;
} command = {1, 1, 0, kProbeBaseInstance};
const GLint sentinel = -1;
// ES makes indirect draws INVALID_OPERATION on the default vertex array object.
GLuint vao = 0;
f.glGenVertexArrays(1, &vao);
f.glBindVertexArray(vao);
GLuint buffers[2] = {0, 0}; // [0] = result SSBO, [1] = indirect command buffer
f.glGenBuffers(2, buffers);
f.glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffers[0]);
f.glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(sentinel), &sentinel, GL_STATIC_DRAW);
f.glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, buffers[0]);
f.glBindBuffer(GL_DRAW_INDIRECT_BUFFER, buffers[1]);
f.glBufferData(GL_DRAW_INDIRECT_BUFFER, sizeof(command), &command, GL_STATIC_DRAW);
// The default framebuffer may be incomplete (e.g. surfaceless contexts) and draws
// are validated against completeness even under GL_RASTERIZER_DISCARD, so give the
// probe its own 1x1 target.
GLuint framebuffer = 0;
GLuint renderbuffer = 0;
f.glGenFramebuffers(1, &framebuffer);
f.glGenRenderbuffers(1, &renderbuffer);
f.glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer);
f.glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, 1, 1);
f.glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
f.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer);
f.glUseProgram(program);
f.glEnable(GL_RASTERIZER_DISCARD);
f.glDrawArraysIndirect(GL_POINTS, nullptr);
f.glDisable(GL_RASTERIZER_DISCARD);
f.glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);
Bool includesBase = false;
const GLenum drawError = f.glGetError();
if (drawError == GL_NO_ERROR) {
f.glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffers[0]);
const void* mapped = f.glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, sizeof(GLint), GL_MAP_READ_BIT);
if (mapped != nullptr) {
GLint written = -1;
std::memcpy(&written, mapped, sizeof(written));
f.glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
includesBase = written == static_cast<GLint>(kProbeBaseInstance);
MGLOG_I("baseInstance probe: shader observed gl_InstanceID = %d (baseInstance was %u)", written,
kProbeBaseInstance);
} else {
MGLOG_I("baseInstance probe inconclusive: result map failed");
}
} else {
MGLOG_I("baseInstance probe inconclusive: draw raised GL error 0x%x", drawError);
}
f.glUseProgram(0);
f.glBindFramebuffer(GL_FRAMEBUFFER, 0);
f.glBindRenderbuffer(GL_RENDERBUFFER, 0);
f.glDeleteFramebuffers(1, &framebuffer);
f.glDeleteRenderbuffers(1, &renderbuffer);
f.glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, 0);
f.glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
f.glBindBuffer(GL_DRAW_INDIRECT_BUFFER, 0);
f.glBindVertexArray(0);
f.glDeleteVertexArrays(1, &vao);
f.glDeleteBuffers(2, buffers);
f.glDeleteProgram(program);
while (f.glGetError() != GL_NO_ERROR) {
}
return includesBase;
}
Bool FillInGLESCapabilities(MG_External::GLESCapabilities& caps, const MG_External::GLESFunctionsTable& glesFuncs) {
if (!glesFuncs.glGetString || !glesFuncs.glGetIntegerv) {
MGLOG_E("Required GLES functions are not loaded, cannot query capabilities");
return false;
}
auto* vendorName = glesFuncs.glGetString(GL_VENDOR);
MGLOG_I("GL_VENDOR: %s", vendorName);
auto* gpuName = glesFuncs.glGetString(GL_RENDERER);
MGLOG_I("GL_RENDERER: %s", gpuName);
glesFuncs.glGetIntegerv(GL_MAJOR_VERSION, &caps.GLESVersion.Major);
glesFuncs.glGetIntegerv(GL_MINOR_VERSION, &caps.GLESVersion.Minor);
caps.GLESVersionString = String((char*)glesFuncs.glGetString(GL_VERSION));
caps.GLESRendererString = String((char*)gpuName);
caps.GLESVendorString = String((char*)vendorName);
caps.GLESShadingLanguageVersionString = String((char*)glesFuncs.glGetString(GL_SHADING_LANGUAGE_VERSION));
GLint extCount = 0;
glesFuncs.glGetIntegerv(GL_NUM_EXTENSIONS, &extCount);
MGLOG_I("Detected %d OpenGL ES extensions:", extCount);
for (GLint i = 0; i < extCount; ++i) {
const char* extension = (const char*)glesFuncs.glGetStringi(GL_EXTENSIONS, i);
if (extension) {
MGLOG_I(" %s", extension);
if (std::strcmp(extension, "GL_EXT_buffer_storage") == 0) {
caps.SupportsPersistentMapping = true;
}
if (std::strcmp(extension, "GL_EXT_texture_norm16") == 0) {
caps.SupportsNorm16Texture = true;
}
if (std::strcmp(extension, "GL_EXT_texture_filter_anisotropic") == 0) {
caps.SupportsTextureFilterAnisotropy = true;
}
if (std::strcmp(extension, "GL_EXT_base_instance") == 0) {
caps.SupportsBaseInstance = true;
}
if (std::strcmp(extension, "GL_EXT_disjoint_timer_query") == 0) {
caps.SupportsDisjointTimerQuery = true;
}
if (std::strcmp(extension, "GL_EXT_blend_func_extended") == 0) {
caps.SupportsDualSourceBlend = true;
}
}
}
// Detect optional raster/color-mask entry points by whether they loaded. glColorMaski is GLES
// 3.2 core (no extension string), so pointer presence is the reliable signal for all of these.
caps.SupportsPolygonMode =
glesFuncs.glPolygonModeNV != nullptr || glesFuncs.glPolygonModeANGLE != nullptr;
caps.SupportsIndexedColorMask = glesFuncs.glColorMaski != nullptr ||
glesFuncs.glColorMaskiEXT != nullptr ||
glesFuncs.glColorMaskiOES != nullptr;
MGLOG_I(" glPolygonMode (NV/ANGLE): %s", caps.SupportsPolygonMode ? "yes" : "no");
MGLOG_I(" indexed glColorMaski: %s", caps.SupportsIndexedColorMask ? "yes" : "no");
MGLOG_I(" dual-source blend (EXT_blend_func_extended): %s",
caps.SupportsDualSourceBlend ? "yes" : "no");
MGLOG_I("OpenGL ES capabilities:");
glesFuncs.glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &caps.UniformBufferOffsetAlignment);
MGLOG_I(" GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT: %d", caps.UniformBufferOffsetAlignment);
GLfloat aliasedLineWidthRange[2] = {1.0f, 1.0f};
GLfloat smoothLineWidthRange[2] = {1.0f, 1.0f};
GLfloat smoothLineWidthGranularity = 1.0f;
GLfloat aliasedPointSizeRange[2] = {1.0f, 1.0f};
GLfloat viewportBoundsRange[2] = {0.0f, 0.0f};
GLint maxViewportDims[2] = {16384, 16384};
GLint viewportSubpixelBits = 0;
GLint max3DTextureSize = 16384;
GLint maxArrayTextureLayers = 2048;
GLint maxCubeMapTextureSize = 16384;
GLint maxFramebufferWidth = 16384;
GLint maxFramebufferHeight = 16384;
GLint maxFramebufferLayers = 2048;
GLint maxRenderbufferSize = 16384;
GLint maxTextureSize = 16384;
GLint maxColorTextureSamples = 1;
GLint maxDepthTextureSamples = 1;
GLint maxFramebufferSamples = 1;
GLint maxIntegerSamples = 1;
GLint maxSamples = 1;
GLint maxSampleMaskWords = 1;
GLint maxTextureImageUnits = 32;
GLint maxVertexTextureImageUnits = 32;
GLint maxComputeTextureImageUnits = 32;
GLint maxCombinedTextureImageUnits = 192;
GLint maxVertexAttribs = 16;
GLint maxComputeShaderStorageBlocks = 8;
GLint maxCombinedShaderStorageBlocks = 32;
GLint maxComputeUniformBlocks = 12;
GLint maxComputeWorkGroupInvocations = 128;
GLint maxShaderStorageBufferBindings = 8;
GLint maxTextureBufferSize = 65536;
GLint maxUniformBufferBindings = 24;
GLint maxUniformBlockSize = 16384;
GLint maxImageUnits = 8;
GLint maxCombinedImageUniforms = 8;
GLint maxVertexImageUniforms = 0;
GLint maxGeometryImageUniforms = 0;
GLint maxFragmentImageUniforms = 8;
GLint maxComputeImageUniforms = 8;
GLint maxDrawBuffers = 8;
GLint maxColorAttachments = 8;
GLint maxClipDistances = 8;
GLint maxViewports = 16;
glesFuncs.glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, aliasedLineWidthRange);
glesFuncs.glGetFloatv(GL_SMOOTH_LINE_WIDTH_RANGE, smoothLineWidthRange);
glesFuncs.glGetFloatv(GL_SMOOTH_LINE_WIDTH_GRANULARITY, &smoothLineWidthGranularity);
glesFuncs.glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, aliasedPointSizeRange);
glesFuncs.glGetFloatv(GL_VIEWPORT_BOUNDS_RANGE, viewportBoundsRange);
glesFuncs.glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &max3DTextureSize);
glesFuncs.glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, &maxArrayTextureLayers);
glesFuncs.glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &maxCubeMapTextureSize);
glesFuncs.glGetIntegerv(GL_MAX_FRAMEBUFFER_WIDTH, &maxFramebufferWidth);
glesFuncs.glGetIntegerv(GL_MAX_FRAMEBUFFER_HEIGHT, &maxFramebufferHeight);
glesFuncs.glGetIntegerv(GL_MAX_FRAMEBUFFER_LAYERS, &maxFramebufferLayers);
glesFuncs.glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, &maxRenderbufferSize);
glesFuncs.glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
glesFuncs.glGetIntegerv(GL_MAX_COLOR_TEXTURE_SAMPLES, &maxColorTextureSamples);
glesFuncs.glGetIntegerv(GL_MAX_DEPTH_TEXTURE_SAMPLES, &maxDepthTextureSamples);
glesFuncs.glGetIntegerv(GL_MAX_FRAMEBUFFER_SAMPLES, &maxFramebufferSamples);
glesFuncs.glGetIntegerv(GL_MAX_INTEGER_SAMPLES, &maxIntegerSamples);
glesFuncs.glGetIntegerv(GL_MAX_SAMPLES, &maxSamples);
glesFuncs.glGetIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &maxSampleMaskWords);
glesFuncs.glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureImageUnits);
glesFuncs.glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &maxVertexTextureImageUnits);
glesFuncs.glGetIntegerv(GL_MAX_COMPUTE_TEXTURE_IMAGE_UNITS, &maxComputeTextureImageUnits);
glesFuncs.glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxCombinedTextureImageUnits);
glesFuncs.glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
glesFuncs.glGetIntegerv(GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS, &maxComputeShaderStorageBlocks);
glesFuncs.glGetIntegerv(GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS, &maxCombinedShaderStorageBlocks);
glesFuncs.glGetIntegerv(GL_MAX_COMPUTE_UNIFORM_BLOCKS, &maxComputeUniformBlocks);
glesFuncs.glGetIntegerv(GL_MAX_COMPUTE_WORK_GROUP_INVOCATIONS, &maxComputeWorkGroupInvocations);
glesFuncs.glGetIntegerv(GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS, &maxShaderStorageBufferBindings);
glesFuncs.glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, &maxTextureBufferSize);
glesFuncs.glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, &maxUniformBufferBindings);
glesFuncs.glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &maxUniformBlockSize);
glesFuncs.glGetIntegerv(GL_MAX_IMAGE_UNITS, &maxImageUnits);
glesFuncs.glGetIntegerv(GL_MAX_COMBINED_IMAGE_UNIFORMS, &maxCombinedImageUniforms);
glesFuncs.glGetIntegerv(GL_MAX_VERTEX_IMAGE_UNIFORMS, &maxVertexImageUniforms);
glesFuncs.glGetIntegerv(GL_MAX_FRAGMENT_IMAGE_UNIFORMS, &maxFragmentImageUniforms);
glesFuncs.glGetIntegerv(GL_MAX_COMPUTE_IMAGE_UNIFORMS, &maxComputeImageUniforms);
// Geometry shaders and their image-uniform query are core only in ES 3.2. DirectGLES
// emits ESSL 3.10 on an ES 3.1 context, so reporting zero there is both legal and an
// accurate description of what the backend compiler can consume.
if (caps.GLESVersion.Major > 3 ||
(caps.GLESVersion.Major == 3 && caps.GLESVersion.Minor >= 2)) {
glesFuncs.glGetIntegerv(GL_MAX_GEOMETRY_IMAGE_UNIFORMS, &maxGeometryImageUniforms);
}
glesFuncs.glGetIntegerv(GL_MAX_DRAW_BUFFERS, &maxDrawBuffers);
glesFuncs.glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &maxColorAttachments);
glesFuncs.glGetIntegerv(GL_MAX_CLIP_DISTANCES, &maxClipDistances);
glesFuncs.glGetIntegerv(GL_MAX_VIEWPORTS, &maxViewports);
glesFuncs.glGetIntegerv(GL_MAX_VIEWPORT_DIMS, maxViewportDims);
glesFuncs.glGetIntegerv(GL_VIEWPORT_SUBPIXEL_BITS, &viewportSubpixelBits);
// Only legal to query once the extension has been seen in the loop above, hence not batched
// with the unconditional probes: on a driver without it this raises GL_INVALID_ENUM.
if (caps.SupportsTextureFilterAnisotropy) {
GLfloat maxTextureMaxAnisotropy = 1.0f;
glesFuncs.glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxTextureMaxAnisotropy);
caps.MaxTextureMaxAnisotropy = std::max(maxTextureMaxAnisotropy, 1.0f);
}
caps.AliasedLineWidthRangeMin = aliasedLineWidthRange[0];
caps.AliasedLineWidthRangeMax = aliasedLineWidthRange[1];
caps.SmoothLineWidthRangeMin = smoothLineWidthRange[0];
caps.SmoothLineWidthRangeMax = smoothLineWidthRange[1];
caps.SmoothLineWidthGranularity = smoothLineWidthGranularity;
caps.PointSizeRangeMin = aliasedPointSizeRange[0];
caps.PointSizeRangeMax = aliasedPointSizeRange[1];
caps.PointSizeGranularity = 1.0f;
caps.Max3DTextureSize = max3DTextureSize;
caps.MaxArrayTextureLayers = maxArrayTextureLayers;
caps.MaxCubeMapTextureSize = maxCubeMapTextureSize;
caps.MaxFramebufferWidth = maxFramebufferWidth;
caps.MaxFramebufferHeight = maxFramebufferHeight;
caps.MaxFramebufferLayers = maxFramebufferLayers;
caps.MaxRenderbufferSize = maxRenderbufferSize;
caps.MaxTextureSize = maxTextureSize;
caps.MaxColorTextureSamples = maxColorTextureSamples;
caps.MaxDepthTextureSamples = maxDepthTextureSamples;
caps.MaxFramebufferSamples = maxFramebufferSamples;
caps.MaxIntegerSamples = maxIntegerSamples;
caps.MaxSamples = maxSamples;
caps.MaxSampleMaskWords = maxSampleMaskWords;
caps.MaxTextureImageUnits = maxTextureImageUnits;
caps.MaxVertexTextureImageUnits = maxVertexTextureImageUnits;
caps.MaxComputeTextureImageUnits = maxComputeTextureImageUnits;
caps.MaxCombinedTextureImageUnits = maxCombinedTextureImageUnits;
caps.MaxVertexAttribs = maxVertexAttribs;
caps.MaxComputeShaderStorageBlocks = maxComputeShaderStorageBlocks;
caps.MaxCombinedShaderStorageBlocks = maxCombinedShaderStorageBlocks;
caps.MaxComputeUniformBlocks = maxComputeUniformBlocks;
caps.MaxComputeWorkGroupInvocations = maxComputeWorkGroupInvocations;
caps.MaxShaderStorageBufferBindings = maxShaderStorageBufferBindings;
caps.MaxTextureBufferSize = maxTextureBufferSize;
caps.MaxUniformBufferBindings = maxUniformBufferBindings;
caps.MaxUniformBlockSize = maxUniformBlockSize;
caps.MaxImageUnits = maxImageUnits;
caps.MaxCombinedImageUniforms = maxCombinedImageUniforms;
caps.MaxVertexImageUniforms = maxVertexImageUniforms;
caps.MaxGeometryImageUniforms = maxGeometryImageUniforms;
caps.MaxFragmentImageUniforms = maxFragmentImageUniforms;
caps.MaxComputeImageUniforms = maxComputeImageUniforms;
caps.MaxDrawBuffers = maxDrawBuffers;
caps.MaxColorAttachments = maxColorAttachments;
caps.MaxClipDistances = maxClipDistances;
caps.MaxViewports = maxViewports;
caps.MaxViewportWidth = maxViewportDims[0];
caps.MaxViewportHeight = maxViewportDims[1];
caps.ViewportBoundsRangeMin = viewportBoundsRange[0];
caps.ViewportBoundsRangeMax = viewportBoundsRange[1];
caps.ViewportSubpixelBits = viewportSubpixelBits;
MGLOG_I(" GL_ALIASED_LINE_WIDTH_RANGE: [%.3f, %.3f]", caps.AliasedLineWidthRangeMin,
caps.AliasedLineWidthRangeMax);
MGLOG_I(" GL_SMOOTH_LINE_WIDTH_RANGE: [%.3f, %.3f]", caps.SmoothLineWidthRangeMin,
caps.SmoothLineWidthRangeMax);
MGLOG_I(" GL_SMOOTH_LINE_WIDTH_GRANULARITY: %.3f", caps.SmoothLineWidthGranularity);
MGLOG_I(" GL_ALIASED_POINT_SIZE_RANGE: [%.3f, %.3f]", caps.PointSizeRangeMin, caps.PointSizeRangeMax);
MGLOG_I(" GL_MAX_3D_TEXTURE_SIZE: %d", caps.Max3DTextureSize);
MGLOG_I(" GL_MAX_ARRAY_TEXTURE_LAYERS: %d", caps.MaxArrayTextureLayers);
MGLOG_I(" GL_MAX_CUBE_MAP_TEXTURE_SIZE: %d", caps.MaxCubeMapTextureSize);
MGLOG_I(" GL_MAX_FRAMEBUFFER_WIDTH: %d", caps.MaxFramebufferWidth);
MGLOG_I(" GL_MAX_FRAMEBUFFER_HEIGHT: %d", caps.MaxFramebufferHeight);
MGLOG_I(" GL_MAX_FRAMEBUFFER_LAYERS: %d", caps.MaxFramebufferLayers);
MGLOG_I(" GL_MAX_RENDERBUFFER_SIZE: %d", caps.MaxRenderbufferSize);
MGLOG_I(" GL_MAX_TEXTURE_SIZE: %d", caps.MaxTextureSize);
MGLOG_I(" GL_MAX_COLOR_TEXTURE_SAMPLES: %d", caps.MaxColorTextureSamples);
MGLOG_I(" GL_MAX_DEPTH_TEXTURE_SAMPLES: %d", caps.MaxDepthTextureSamples);
MGLOG_I(" GL_MAX_FRAMEBUFFER_SAMPLES: %d", caps.MaxFramebufferSamples);
MGLOG_I(" GL_MAX_INTEGER_SAMPLES: %d", caps.MaxIntegerSamples);
MGLOG_I(" GL_MAX_SAMPLES: %d", caps.MaxSamples);
MGLOG_I(" GL_MAX_SAMPLE_MASK_WORDS: %d", caps.MaxSampleMaskWords);
MGLOG_I(" GL_MAX_TEXTURE_IMAGE_UNITS: %d", caps.MaxTextureImageUnits);
MGLOG_I(" GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: %d", caps.MaxVertexTextureImageUnits);
MGLOG_I(" GL_MAX_COMPUTE_TEXTURE_IMAGE_UNITS: %d", caps.MaxComputeTextureImageUnits);
MGLOG_I(" GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: %d", caps.MaxCombinedTextureImageUnits);
MGLOG_I(" GL_MAX_VERTEX_ATTRIBS: %d", caps.MaxVertexAttribs);
MGLOG_I(" GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS: %d", caps.MaxComputeShaderStorageBlocks);
MGLOG_I(" GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS: %d", caps.MaxCombinedShaderStorageBlocks);
MGLOG_I(" GL_MAX_COMPUTE_UNIFORM_BLOCKS: %d", caps.MaxComputeUniformBlocks);
MGLOG_I(" GL_MAX_COMPUTE_WORK_GROUP_INVOCATIONS: %d", caps.MaxComputeWorkGroupInvocations);
MGLOG_I(" GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS: %d", caps.MaxShaderStorageBufferBindings);
MGLOG_I(" GL_MAX_TEXTURE_BUFFER_SIZE: %d", caps.MaxTextureBufferSize);
MGLOG_I(" GL_MAX_UNIFORM_BUFFER_BINDINGS: %d", caps.MaxUniformBufferBindings);
MGLOG_I(" GL_MAX_UNIFORM_BLOCK_SIZE: %d", caps.MaxUniformBlockSize);
MGLOG_I(" GL_MAX_IMAGE_UNITS: %d", caps.MaxImageUnits);
MGLOG_I(" GL_MAX_COMBINED_IMAGE_UNIFORMS: %d", caps.MaxCombinedImageUniforms);
MGLOG_I(" GL_MAX_VERTEX_IMAGE_UNIFORMS: %d", caps.MaxVertexImageUniforms);
MGLOG_I(" GL_MAX_GEOMETRY_IMAGE_UNIFORMS: %d", caps.MaxGeometryImageUniforms);
MGLOG_I(" GL_MAX_FRAGMENT_IMAGE_UNIFORMS: %d", caps.MaxFragmentImageUniforms);
MGLOG_I(" GL_MAX_COMPUTE_IMAGE_UNIFORMS: %d", caps.MaxComputeImageUniforms);
MGLOG_I(" GL_MAX_DRAW_BUFFERS: %d", caps.MaxDrawBuffers);
MGLOG_I(" GL_MAX_COLOR_ATTACHMENTS: %d", caps.MaxColorAttachments);
MGLOG_I(" GL_MAX_CLIP_DISTANCES: %d", caps.MaxClipDistances);
MGLOG_I(" GL_MAX_VIEWPORTS: %d", caps.MaxViewports);
MGLOG_I(" GL_MAX_VIEWPORT_DIMS: [%d, %d]", caps.MaxViewportWidth, caps.MaxViewportHeight);
MGLOG_I(" GL_VIEWPORT_BOUNDS_RANGE: [%.3f, %.3f]", caps.ViewportBoundsRangeMin,
caps.ViewportBoundsRangeMax);
MGLOG_I(" GL_VIEWPORT_SUBPIXEL_BITS: %d", caps.ViewportSubpixelBits);
caps.IndirectDrawInstanceIdIncludesBaseInstance =
ProbeIndirectInstanceIdIncludesBaseInstance(caps, glesFuncs);
MGLOG_I(" Indirect draw gl_InstanceID includes baseInstance: %s",
caps.IndirectDrawInstanceIdIncludesBaseInstance ? "true" : "false");
caps.IsAngleRenderer = caps.GLESRendererString.find("ANGLE") != String::npos;
caps.IsAngleLlvmpipeRenderer =
caps.IsAngleRenderer && caps.GLESRendererString.find("llvmpipe") != String::npos;
caps.AvoidSamplerMipmapMinFilter =
caps.IsAngleLlvmpipeRenderer && MG_Config::Features.AvoidSamplerMipmapMinFilter;
MGLOG_I(" GL_EXT_disjoint_timer_query supported: %s",
caps.SupportsDisjointTimerQuery ? "true" : "false");
MGLOG_I(" ANGLE renderer: %s", caps.IsAngleRenderer ? "true" : "false");
MGLOG_I(" ANGLE llvmpipe renderer: %s", caps.IsAngleLlvmpipeRenderer ? "true" : "false");
MGLOG_I(" Avoid sampler mipmap min filter: %s",
caps.AvoidSamplerMipmapMinFilter ? "true" : "false");
return true;
}
} // namespace MobileGL::MG_Util::BackendLoader
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