/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* vim: set ts=8 sts=4 et sw=4 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "GLContext.h" #include <algorithm> #include <stdio.h> #include <string.h> #include <ctype.h> #include <vector> #ifdef MOZ_WIDGET_ANDROID #include <sys/mman.h> #endif #include "GLBlitHelper.h" #include "GLReadTexImageHelper.h" #include "GLScreenBuffer.h" #include "gfxEnv.h" #include "gfxUtils.h" #include "GLContextProvider.h" #include "GLTextureImage.h" #include "nsPrintfCString.h" #include "nsThreadUtils.h" #include "prenv.h" #include "prlink.h" #include "ScopedGLHelpers.h" #include "SharedSurfaceGL.h" #include "GfxTexturesReporter.h" #include "TextureGarbageBin.h" #include "gfx2DGlue.h" #include "gfxPrefs.h" #include "mozilla/IntegerPrintfMacros.h" #include "mozilla/gfx/Logging.h" #include "OGLShaderProgram.h" // for ShaderProgramType #include "mozilla/DebugOnly.h" #ifdef XP_MACOSX #include <CoreServices/CoreServices.h> #endif #if defined(MOZ_WIDGET_COCOA) #include "nsCocoaFeatures.h" #endif #ifdef MOZ_WIDGET_ANDROID #include "AndroidBridge.h" #endif namespace mozilla { namespace gl { using namespace mozilla::gfx; using namespace mozilla::layers; #ifdef MOZ_GL_DEBUG unsigned GLContext::sCurrentGLContextTLS = -1; #endif // If adding defines, don't forget to undefine symbols. See #undef block below. #define CORE_SYMBOL(x) { (PRFuncPtr*) &mSymbols.f##x, { #x, nullptr } } #define CORE_EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, { #x, #x #y, #x #z, nullptr } } #define EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, { #x #y, #x #z, nullptr } } #define EXT_SYMBOL3(x,y,z,w) { (PRFuncPtr*) &mSymbols.f##x, { #x #y, #x #z, #x #w, nullptr } } #define END_SYMBOLS { nullptr, { nullptr } } // should match the order of GLExtensions, and be null-terminated. static const char* const sExtensionNames[] = { "NO_EXTENSION", "GL_AMD_compressed_ATC_texture", "GL_ANGLE_depth_texture", "GL_ANGLE_framebuffer_blit", "GL_ANGLE_framebuffer_multisample", "GL_ANGLE_instanced_arrays", "GL_ANGLE_texture_compression_dxt3", "GL_ANGLE_texture_compression_dxt5", "GL_ANGLE_timer_query", "GL_APPLE_client_storage", "GL_APPLE_framebuffer_multisample", "GL_APPLE_sync", "GL_APPLE_texture_range", "GL_APPLE_vertex_array_object", "GL_ARB_ES2_compatibility", "GL_ARB_ES3_compatibility", "GL_ARB_color_buffer_float", "GL_ARB_copy_buffer", "GL_ARB_depth_texture", "GL_ARB_draw_buffers", "GL_ARB_draw_instanced", "GL_ARB_framebuffer_object", "GL_ARB_framebuffer_sRGB", "GL_ARB_geometry_shader4", "GL_ARB_half_float_pixel", "GL_ARB_instanced_arrays", "GL_ARB_internalformat_query", "GL_ARB_invalidate_subdata", "GL_ARB_map_buffer_range", "GL_ARB_occlusion_query2", "GL_ARB_pixel_buffer_object", "GL_ARB_robustness", "GL_ARB_sampler_objects", "GL_ARB_seamless_cube_map", "GL_ARB_shader_texture_lod", "GL_ARB_sync", "GL_ARB_texture_compression", "GL_ARB_texture_float", "GL_ARB_texture_non_power_of_two", "GL_ARB_texture_rectangle", "GL_ARB_texture_rg", "GL_ARB_texture_storage", "GL_ARB_texture_swizzle", "GL_ARB_timer_query", "GL_ARB_transform_feedback2", "GL_ARB_uniform_buffer_object", "GL_ARB_vertex_array_object", "GL_EXT_bgra", "GL_EXT_blend_minmax", "GL_EXT_color_buffer_float", "GL_EXT_color_buffer_half_float", "GL_EXT_copy_texture", "GL_EXT_disjoint_timer_query", "GL_EXT_draw_buffers", "GL_EXT_draw_buffers2", "GL_EXT_draw_instanced", "GL_EXT_draw_range_elements", "GL_EXT_frag_depth", "GL_EXT_framebuffer_blit", "GL_EXT_framebuffer_multisample", "GL_EXT_framebuffer_object", "GL_EXT_framebuffer_sRGB", "GL_EXT_gpu_shader4", "GL_EXT_multisampled_render_to_texture", "GL_EXT_occlusion_query_boolean", "GL_EXT_packed_depth_stencil", "GL_EXT_read_format_bgra", "GL_EXT_robustness", "GL_EXT_sRGB", "GL_EXT_sRGB_write_control", "GL_EXT_shader_texture_lod", "GL_EXT_texture3D", "GL_EXT_texture_compression_dxt1", "GL_EXT_texture_compression_s3tc", "GL_EXT_texture_filter_anisotropic", "GL_EXT_texture_format_BGRA8888", "GL_EXT_texture_sRGB", "GL_EXT_texture_storage", "GL_EXT_timer_query", "GL_EXT_transform_feedback", "GL_EXT_unpack_subimage", "GL_IMG_read_format", "GL_IMG_texture_compression_pvrtc", "GL_IMG_texture_npot", "GL_KHR_debug", "GL_NV_draw_instanced", "GL_NV_fence", "GL_NV_framebuffer_blit", "GL_NV_geometry_program4", "GL_NV_half_float", "GL_NV_instanced_arrays", "GL_NV_primitive_restart", "GL_NV_texture_barrier", "GL_NV_transform_feedback", "GL_NV_transform_feedback2", "GL_OES_EGL_image", "GL_OES_EGL_image_external", "GL_OES_EGL_sync", "GL_OES_compressed_ETC1_RGB8_texture", "GL_OES_depth24", "GL_OES_depth32", "GL_OES_depth_texture", "GL_OES_element_index_uint", "GL_OES_framebuffer_object", "GL_OES_packed_depth_stencil", "GL_OES_rgb8_rgba8", "GL_OES_standard_derivatives", "GL_OES_stencil8", "GL_OES_texture_3D", "GL_OES_texture_float", "GL_OES_texture_float_linear", "GL_OES_texture_half_float", "GL_OES_texture_half_float_linear", "GL_OES_texture_npot", "GL_OES_vertex_array_object" }; static bool ParseGLSLVersion(GLContext* gl, uint32_t* out_version) { if (gl->fGetError() != LOCAL_GL_NO_ERROR) { MOZ_ASSERT(false, "An OpenGL error has been triggered before."); return false; } /** * OpenGL 2.x, 3.x, 4.x specifications: * The VERSION and SHADING_LANGUAGE_VERSION strings are laid out as follows: * * <version number><space><vendor-specific information> * * The version number is either of the form major_number.minor_number or * major_number.minor_number.release_number, where the numbers all have * one or more digits. * * SHADING_LANGUAGE_VERSION is *almost* identical to VERSION. The * difference is that the minor version always has two digits and the * prefix has an additional 'GLSL ES' * * * OpenGL ES 2.0, 3.0 specifications: * The VERSION string is laid out as follows: * * "OpenGL ES N.M vendor-specific information" * * The version number is either of the form major_number.minor_number or * major_number.minor_number.release_number, where the numbers all have * one or more digits. * * * Note: * We don't care about release_number. */ const char* versionString = (const char*) gl->fGetString(LOCAL_GL_SHADING_LANGUAGE_VERSION); if (gl->fGetError() != LOCAL_GL_NO_ERROR) { MOZ_ASSERT(false, "glGetString(GL_SHADING_LANGUAGE_VERSION) has generated an error"); return false; } if (!versionString) { // This happens on the Android emulators. We'll just return 100 *out_version = 100; return true; } const auto fnSkipPrefix = [&versionString](const char* prefix) { const auto len = strlen(prefix); if (strncmp(versionString, prefix, len) == 0) versionString += len; }; const char kGLESVersionPrefix[] = "OpenGL ES GLSL ES"; fnSkipPrefix(kGLESVersionPrefix); if (gl->WorkAroundDriverBugs()) { // Nexus 7 2013 (bug 1234441) const char kBadGLESVersionPrefix[] = "OpenGL ES GLSL"; fnSkipPrefix(kBadGLESVersionPrefix); } const char* itr = versionString; char* end = nullptr; auto majorVersion = strtol(itr, &end, 10); if (!end) { MOZ_ASSERT(false, "Failed to parse the GL major version number."); return false; } if (*end != '.') { MOZ_ASSERT(false, "Failed to parse GL's major-minor version number separator."); return false; } // we skip the '.' between the major and the minor version itr = end + 1; end = nullptr; auto minorVersion = strtol(itr, &end, 10); if (!end) { MOZ_ASSERT(false, "Failed to parse GL's minor version number."); return false; } if (majorVersion <= 0 || majorVersion >= 100) { MOZ_ASSERT(false, "Invalid major version."); return false; } if (minorVersion < 0 || minorVersion >= 100) { MOZ_ASSERT(false, "Invalid minor version."); return false; } *out_version = (uint32_t) majorVersion * 100 + (uint32_t) minorVersion; return true; } static bool ParseGLVersion(GLContext* gl, uint32_t* out_version) { if (gl->fGetError() != LOCAL_GL_NO_ERROR) { MOZ_ASSERT(false, "An OpenGL error has been triggered before."); return false; } /** * B2G emulator bug work around: The emulator implements OpenGL ES 2.0 on * OpenGL 3.2. The bug is that GetIntegerv(LOCAL_GL_{MAJOR,MINOR}_VERSION) * returns OpenGL 3.2 instead of generating an error. */ if (!gl->IsGLES()) { /** * OpenGL 3.1 and OpenGL ES 3.0 both introduce GL_{MAJOR,MINOR}_VERSION * with GetIntegerv. So we first try those constants even though we * might not have an OpenGL context supporting them, as this is a * better way than parsing GL_VERSION. */ GLint majorVersion = 0; GLint minorVersion = 0; const bool ok = (gl->GetPotentialInteger(LOCAL_GL_MAJOR_VERSION, &majorVersion) && gl->GetPotentialInteger(LOCAL_GL_MINOR_VERSION, &minorVersion)); // If it's not an OpenGL (ES) 3.0 context, we will have an error if (ok && majorVersion > 0 && minorVersion >= 0) { *out_version = majorVersion * 100 + minorVersion * 10; return true; } } /** * We were not able to use GL_{MAJOR,MINOR}_VERSION, so we parse * GL_VERSION. * * * OpenGL 2.x, 3.x, 4.x specifications: * The VERSION and SHADING_LANGUAGE_VERSION strings are laid out as follows: * * <version number><space><vendor-specific information> * * The version number is either of the form major_number.minor_number or * major_number.minor_number.release_number, where the numbers all have * one or more digits. * * * OpenGL ES 2.0, 3.0 specifications: * The VERSION string is laid out as follows: * * "OpenGL ES N.M vendor-specific information" * * The version number is either of the form major_number.minor_number or * major_number.minor_number.release_number, where the numbers all have * one or more digits. * * * Note: * We don't care about release_number. */ const char* versionString = (const char*)gl->fGetString(LOCAL_GL_VERSION); if (gl->fGetError() != LOCAL_GL_NO_ERROR) { MOZ_ASSERT(false, "glGetString(GL_VERSION) has generated an error"); return false; } else if (!versionString) { MOZ_ASSERT(false, "glGetString(GL_VERSION) has returned 0"); return false; } const char kGLESVersionPrefix[] = "OpenGL ES "; if (strncmp(versionString, kGLESVersionPrefix, strlen(kGLESVersionPrefix)) == 0) { versionString += strlen(kGLESVersionPrefix); } const char* itr = versionString; char* end = nullptr; auto majorVersion = strtol(itr, &end, 10); if (!end) { MOZ_ASSERT(false, "Failed to parse the GL major version number."); return false; } else if (*end != '.') { MOZ_ASSERT(false, "Failed to parse GL's major-minor version number separator."); return false; } // we skip the '.' between the major and the minor version itr = end + 1; end = nullptr; auto minorVersion = strtol(itr, &end, 10); if (!end) { MOZ_ASSERT(false, "Failed to parse GL's minor version number."); return false; } if (majorVersion <= 0 || majorVersion >= 100) { MOZ_ASSERT(false, "Invalid major version."); return false; } else if (minorVersion < 0 || minorVersion >= 10) { MOZ_ASSERT(false, "Invalid minor version."); return false; } *out_version = (uint32_t)majorVersion * 100 + (uint32_t)minorVersion * 10; return true; } static uint8_t ChooseDebugFlags(CreateContextFlags createFlags) { uint8_t debugFlags = 0; #ifdef MOZ_GL_DEBUG if (gfxEnv::GlDebug()) { debugFlags |= GLContext::DebugFlagEnabled; } // Enables extra verbose output, informing of the start and finish of every GL call. // Useful e.g. to record information to investigate graphics system crashes/lockups if (gfxEnv::GlDebugVerbose()) { debugFlags |= GLContext::DebugFlagTrace; } // Aborts on GL error. Can be useful to debug quicker code that is known not to // generate any GL error in principle. bool abortOnError = false; if (createFlags & CreateContextFlags::NO_VALIDATION) { abortOnError = true; const auto fnStringsMatch = [](const char* a, const char* b) { return strcmp(a, b) == 0; }; const char* envAbortOnError = PR_GetEnv("MOZ_GL_DEBUG_ABORT_ON_ERROR"); if (envAbortOnError && fnStringsMatch(envAbortOnError, "0")) { abortOnError = false; } } if (abortOnError) { debugFlags |= GLContext::DebugFlagAbortOnError; } #endif return debugFlags; } GLContext::GLContext(CreateContextFlags flags, const SurfaceCaps& caps, GLContext* sharedContext, bool isOffscreen) : mIsOffscreen(isOffscreen), mContextLost(false), mVersion(0), mProfile(ContextProfile::Unknown), mShadingLanguageVersion(0), mVendor(GLVendor::Other), mRenderer(GLRenderer::Other), mTopError(LOCAL_GL_NO_ERROR), mDebugFlags(ChooseDebugFlags(flags)), mSharedContext(sharedContext), mCaps(caps), mScreen(nullptr), mLockedSurface(nullptr), mMaxTextureSize(0), mMaxCubeMapTextureSize(0), mMaxTextureImageSize(0), mMaxRenderbufferSize(0), mMaxSamples(0), mNeedsTextureSizeChecks(false), mNeedsFlushBeforeDeleteFB(false), mTextureAllocCrashesOnMapFailure(false), mNeedsCheckAfterAttachTextureToFb(false), mWorkAroundDriverBugs(true), mHeavyGLCallsSinceLastFlush(false) { mMaxViewportDims[0] = 0; mMaxViewportDims[1] = 0; mOwningThreadId = PlatformThread::CurrentId(); } GLContext::~GLContext() { NS_ASSERTION(IsDestroyed(), "GLContext implementation must call MarkDestroyed in destructor!"); #ifdef MOZ_GL_DEBUG if (mSharedContext) { GLContext* tip = mSharedContext; while (tip->mSharedContext) tip = tip->mSharedContext; tip->SharedContextDestroyed(this); tip->ReportOutstandingNames(); } else { ReportOutstandingNames(); } #endif } /*static*/ void GLContext::StaticDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const GLvoid* userParam) { GLContext* gl = (GLContext*)userParam; gl->DebugCallback(source, type, id, severity, length, message); } static void ClearSymbols(const GLLibraryLoader::SymLoadStruct* symbols) { while (symbols->symPointer) { *symbols->symPointer = nullptr; symbols++; } } bool GLContext::InitWithPrefix(const char* prefix, bool trygl) { MOZ_RELEASE_ASSERT(!mSymbols.fBindFramebuffer, "GFX: InitWithPrefix should only be called once."); if (!InitWithPrefixImpl(prefix, trygl)) { // If initialization fails, zero the symbols to avoid hard-to-understand bugs. mSymbols.Zero(); NS_WARNING("GLContext::InitWithPrefix failed!"); return false; } return true; } static bool LoadGLSymbols(GLContext* gl, const char* prefix, bool trygl, const GLLibraryLoader::SymLoadStruct* list, const char* desc) { if (gl->LoadSymbols(list, trygl, prefix)) return true; ClearSymbols(list); if (desc) { const nsPrintfCString err("Failed to load symbols for %s.", desc); NS_ERROR(err.BeginReading()); } return false; } bool GLContext::LoadExtSymbols(const char* prefix, bool trygl, const SymLoadStruct* list, GLExtensions ext) { const char* extName = sExtensionNames[size_t(ext)]; if (!LoadGLSymbols(this, prefix, trygl, list, extName)) { MarkExtensionUnsupported(ext); return false; } return true; }; bool GLContext::LoadFeatureSymbols(const char* prefix, bool trygl, const SymLoadStruct* list, GLFeature feature) { const char* featureName = GetFeatureName(feature); if (!LoadGLSymbols(this, prefix, trygl, list, featureName)) { MarkUnsupported(feature); return false; } return true; }; bool GLContext::InitWithPrefixImpl(const char* prefix, bool trygl) { mWorkAroundDriverBugs = gfxPrefs::WorkAroundDriverBugs(); const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fActiveTexture, { "ActiveTexture", "ActiveTextureARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fAttachShader, { "AttachShader", "AttachShaderARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindAttribLocation, { "BindAttribLocation", "BindAttribLocationARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindBuffer, { "BindBuffer", "BindBufferARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindTexture, { "BindTexture", "BindTextureARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fBlendColor, { "BlendColor", nullptr } }, { (PRFuncPtr*) &mSymbols.fBlendEquation, { "BlendEquation", nullptr } }, { (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, { "BlendEquationSeparate", "BlendEquationSeparateEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fBlendFunc, { "BlendFunc", nullptr } }, { (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, { "BlendFuncSeparate", "BlendFuncSeparateEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fBufferData, { "BufferData", nullptr } }, { (PRFuncPtr*) &mSymbols.fBufferSubData, { "BufferSubData", nullptr } }, { (PRFuncPtr*) &mSymbols.fClear, { "Clear", nullptr } }, { (PRFuncPtr*) &mSymbols.fClearColor, { "ClearColor", nullptr } }, { (PRFuncPtr*) &mSymbols.fClearStencil, { "ClearStencil", nullptr } }, { (PRFuncPtr*) &mSymbols.fColorMask, { "ColorMask", nullptr } }, { (PRFuncPtr*) &mSymbols.fCompressedTexImage2D, {"CompressedTexImage2D", nullptr} }, { (PRFuncPtr*) &mSymbols.fCompressedTexSubImage2D, {"CompressedTexSubImage2D", nullptr} }, { (PRFuncPtr*) &mSymbols.fCullFace, { "CullFace", nullptr } }, { (PRFuncPtr*) &mSymbols.fDetachShader, { "DetachShader", "DetachShaderARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fDepthFunc, { "DepthFunc", nullptr } }, { (PRFuncPtr*) &mSymbols.fDepthMask, { "DepthMask", nullptr } }, { (PRFuncPtr*) &mSymbols.fDisable, { "Disable", nullptr } }, { (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, { "DisableVertexAttribArray", "DisableVertexAttribArrayARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fDrawArrays, { "DrawArrays", nullptr } }, { (PRFuncPtr*) &mSymbols.fDrawElements, { "DrawElements", nullptr } }, { (PRFuncPtr*) &mSymbols.fEnable, { "Enable", nullptr } }, { (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, { "EnableVertexAttribArray", "EnableVertexAttribArrayARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fFinish, { "Finish", nullptr } }, { (PRFuncPtr*) &mSymbols.fFlush, { "Flush", nullptr } }, { (PRFuncPtr*) &mSymbols.fFrontFace, { "FrontFace", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetActiveAttrib, { "GetActiveAttrib", "GetActiveAttribARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetActiveUniform, { "GetActiveUniform", "GetActiveUniformARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetAttachedShaders, { "GetAttachedShaders", "GetAttachedShadersARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetAttribLocation, { "GetAttribLocation", "GetAttribLocationARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetIntegerv, { "GetIntegerv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetFloatv, { "GetFloatv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetBooleanv, { "GetBooleanv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, { "GetBufferParameteriv", "GetBufferParameterivARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetError, { "GetError", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetProgramiv, { "GetProgramiv", "GetProgramivARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, { "GetProgramInfoLog", "GetProgramInfoLogARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexParameteri, { "TexParameteri", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexParameteriv, { "TexParameteriv", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexParameterf, { "TexParameterf", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetString, { "GetString", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetTexParameterfv, { "GetTexParameterfv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetTexParameteriv, { "GetTexParameteriv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetUniformfv, { "GetUniformfv", "GetUniformfvARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetUniformiv, { "GetUniformiv", "GetUniformivARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetUniformLocation, { "GetUniformLocation", "GetUniformLocationARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, { "GetVertexAttribfv", "GetVertexAttribfvARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, { "GetVertexAttribiv", "GetVertexAttribivARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetVertexAttribPointerv, { "GetVertexAttribPointerv", nullptr } }, { (PRFuncPtr*) &mSymbols.fHint, { "Hint", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsBuffer, { "IsBuffer", "IsBufferARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsEnabled, { "IsEnabled", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsProgram, { "IsProgram", "IsProgramARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsShader, { "IsShader", "IsShaderARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsTexture, { "IsTexture", "IsTextureARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fLineWidth, { "LineWidth", nullptr } }, { (PRFuncPtr*) &mSymbols.fLinkProgram, { "LinkProgram", "LinkProgramARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fPixelStorei, { "PixelStorei", nullptr } }, { (PRFuncPtr*) &mSymbols.fPolygonOffset, { "PolygonOffset", nullptr } }, { (PRFuncPtr*) &mSymbols.fReadPixels, { "ReadPixels", nullptr } }, { (PRFuncPtr*) &mSymbols.fSampleCoverage, { "SampleCoverage", nullptr } }, { (PRFuncPtr*) &mSymbols.fScissor, { "Scissor", nullptr } }, { (PRFuncPtr*) &mSymbols.fStencilFunc, { "StencilFunc", nullptr } }, { (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, { "StencilFuncSeparate", "StencilFuncSeparateEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fStencilMask, { "StencilMask", nullptr } }, { (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, { "StencilMaskSeparate", "StencilMaskSeparateEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fStencilOp, { "StencilOp", nullptr } }, { (PRFuncPtr*) &mSymbols.fStencilOpSeparate, { "StencilOpSeparate", "StencilOpSeparateEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexImage2D, { "TexImage2D", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexSubImage2D, { "TexSubImage2D", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform1f, { "Uniform1f", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform1fv, { "Uniform1fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform1i, { "Uniform1i", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform1iv, { "Uniform1iv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform2f, { "Uniform2f", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform2fv, { "Uniform2fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform2i, { "Uniform2i", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform2iv, { "Uniform2iv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform3f, { "Uniform3f", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform3fv, { "Uniform3fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform3i, { "Uniform3i", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform3iv, { "Uniform3iv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform4f, { "Uniform4f", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform4fv, { "Uniform4fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform4i, { "Uniform4i", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform4iv, { "Uniform4iv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, { "UniformMatrix2fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, { "UniformMatrix3fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, { "UniformMatrix4fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUseProgram, { "UseProgram", nullptr } }, { (PRFuncPtr*) &mSymbols.fValidateProgram, { "ValidateProgram", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib1f, { "VertexAttrib1f", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib2f, { "VertexAttrib2f", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib3f, { "VertexAttrib3f", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib4f, { "VertexAttrib4f", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, { "VertexAttrib1fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, { "VertexAttrib2fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, { "VertexAttrib3fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, { "VertexAttrib4fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fViewport, { "Viewport", nullptr } }, { (PRFuncPtr*) &mSymbols.fCompileShader, { "CompileShader", nullptr } }, { (PRFuncPtr*) &mSymbols.fCopyTexImage2D, { "CopyTexImage2D", nullptr } }, { (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, { "CopyTexSubImage2D", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetShaderiv, { "GetShaderiv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, { "GetShaderInfoLog", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetShaderSource, { "GetShaderSource", nullptr } }, { (PRFuncPtr*) &mSymbols.fShaderSource, { "ShaderSource", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribPointer, { "VertexAttribPointer", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenBuffers, { "GenBuffers", "GenBuffersARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenTextures, { "GenTextures", nullptr } }, { (PRFuncPtr*) &mSymbols.fCreateProgram, { "CreateProgram", "CreateProgramARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fCreateShader, { "CreateShader", "CreateShaderARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteBuffers, { "DeleteBuffers", "DeleteBuffersARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteTextures, { "DeleteTextures", "DeleteTexturesARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteProgram, { "DeleteProgram", "DeleteProgramARB", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteShader, { "DeleteShader", "DeleteShaderARB", nullptr } }, END_SYMBOLS }; if (!LoadGLSymbols(this, prefix, trygl, coreSymbols, "GL")) return false; //////////////// MakeCurrent(); MOZ_ASSERT(mProfile != ContextProfile::Unknown); uint32_t version = 0; ParseGLVersion(this, &version); mShadingLanguageVersion = 100; ParseGLSLVersion(this, &mShadingLanguageVersion); if (ShouldSpew()) { printf_stderr("OpenGL version detected: %u\n", version); printf_stderr("OpenGL shading language version detected: %u\n", mShadingLanguageVersion); printf_stderr("OpenGL vendor: %s\n", fGetString(LOCAL_GL_VENDOR)); printf_stderr("OpenGL renderer: %s\n", fGetString(LOCAL_GL_RENDERER)); } if (version >= mVersion) { mVersion = version; } // Don't fail if version < mVersion, see bug 999445, // Mac OSX 10.6/10.7 machines with Intel GPUs claim only OpenGL 1.4 but // have all the GL2+ extensions that we need. //////////////// // Load OpenGL ES 2.0 symbols, or desktop if we aren't using ES 2. if (IsGLES()) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetShaderPrecisionFormat, { "GetShaderPrecisionFormat", nullptr } }, { (PRFuncPtr*) &mSymbols.fClearDepthf, { "ClearDepthf", nullptr } }, { (PRFuncPtr*) &mSymbols.fDepthRangef, { "DepthRangef", nullptr } }, END_SYMBOLS }; if (!LoadGLSymbols(this, prefix, trygl, symbols, "OpenGL ES")) return false; } else { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fClearDepth, { "ClearDepth", nullptr } }, { (PRFuncPtr*) &mSymbols.fDepthRange, { "DepthRange", nullptr } }, { (PRFuncPtr*) &mSymbols.fReadBuffer, { "ReadBuffer", nullptr } }, { (PRFuncPtr*) &mSymbols.fMapBuffer, { "MapBuffer", nullptr } }, { (PRFuncPtr*) &mSymbols.fUnmapBuffer, { "UnmapBuffer", nullptr } }, { (PRFuncPtr*) &mSymbols.fPointParameterf, { "PointParameterf", nullptr } }, { (PRFuncPtr*) &mSymbols.fDrawBuffer, { "DrawBuffer", nullptr } }, // The following functions are only used by Skia/GL in desktop mode. // Other parts of Gecko should avoid using these { (PRFuncPtr*) &mSymbols.fDrawBuffers, { "DrawBuffers", nullptr } }, { (PRFuncPtr*) &mSymbols.fClientActiveTexture, { "ClientActiveTexture", nullptr } }, { (PRFuncPtr*) &mSymbols.fDisableClientState, { "DisableClientState", nullptr } }, { (PRFuncPtr*) &mSymbols.fEnableClientState, { "EnableClientState", nullptr } }, { (PRFuncPtr*) &mSymbols.fLoadIdentity, { "LoadIdentity", nullptr } }, { (PRFuncPtr*) &mSymbols.fLoadMatrixf, { "LoadMatrixf", nullptr } }, { (PRFuncPtr*) &mSymbols.fMatrixMode, { "MatrixMode", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexGeni, { "TexGeni", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexGenf, { "TexGenf", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexGenfv, { "TexGenfv", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexPointer, { "VertexPointer", nullptr } }, END_SYMBOLS }; if (!LoadGLSymbols(this, prefix, trygl, symbols, "Desktop OpenGL")) return false; } //////////////// const char* glVendorString = (const char*)fGetString(LOCAL_GL_VENDOR); const char* glRendererString = (const char*)fGetString(LOCAL_GL_RENDERER); if (!glVendorString || !glRendererString) return false; // The order of these strings must match up with the order of the enum // defined in GLContext.h for vendor IDs. const char* vendorMatchStrings[size_t(GLVendor::Other) + 1] = { "Intel", "NVIDIA", "ATI", "Qualcomm", "Imagination", "nouveau", "Vivante", "VMware, Inc.", "ARM", "Unknown" }; mVendor = GLVendor::Other; for (size_t i = 0; i < size_t(GLVendor::Other); ++i) { if (DoesStringMatch(glVendorString, vendorMatchStrings[i])) { mVendor = GLVendor(i); break; } } // The order of these strings must match up with the order of the enum // defined in GLContext.h for renderer IDs. const char* rendererMatchStrings[size_t(GLRenderer::Other) + 1] = { "Adreno 200", "Adreno 205", "Adreno (TM) 200", "Adreno (TM) 205", "Adreno (TM) 305", "Adreno (TM) 320", "Adreno (TM) 330", "Adreno (TM) 420", "Mali-400 MP", "Mali-450 MP", "PowerVR SGX 530", "PowerVR SGX 540", "PowerVR SGX 544MP", "NVIDIA Tegra", "Android Emulator", "Gallium 0.4 on llvmpipe", "Intel HD Graphics 3000 OpenGL Engine", "Microsoft Basic Render Driver", "Unknown" }; mRenderer = GLRenderer::Other; for (size_t i = 0; i < size_t(GLRenderer::Other); ++i) { if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) { mRenderer = GLRenderer(i); break; } } if (ShouldSpew()) { printf_stderr("GL_VENDOR: %s\n", glVendorString); printf_stderr("mVendor: %s\n", vendorMatchStrings[size_t(mVendor)]); printf_stderr("GL_RENDERER: %s\n", glRendererString); printf_stderr("mRenderer: %s\n", rendererMatchStrings[size_t(mRenderer)]); } //////////////// // We need this for retrieving the list of extensions on Core profiles. if (IsFeatureProvidedByCoreSymbols(GLFeature::get_string_indexed)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetStringi, { "GetStringi", nullptr } }, END_SYMBOLS }; if (!LoadGLSymbols(this, prefix, trygl, symbols, "get_string_indexed")) { MOZ_RELEASE_ASSERT(false, "GFX: get_string_indexed is required!"); return false; } } InitExtensions(); InitFeatures(); // Disable extensions with partial or incorrect support. if (WorkAroundDriverBugs()) { if (Renderer() == GLRenderer::AdrenoTM320) { MarkUnsupported(GLFeature::standard_derivatives); } if (Vendor() == GLVendor::Vivante) { // bug 958256 MarkUnsupported(GLFeature::standard_derivatives); } if (Renderer() == GLRenderer::MicrosoftBasicRenderDriver) { // Bug 978966: on Microsoft's "Basic Render Driver" (software renderer) // multisampling hardcodes blending with the default blendfunc, which breaks WebGL. MarkUnsupported(GLFeature::framebuffer_multisample); } #ifdef XP_MACOSX // The Mac Nvidia driver, for versions up to and including 10.8, // don't seem to properly support this. See 814839 // this has been fixed in Mac OS X 10.9. See 907946 // and it also works in 10.8.3 and higher. See 1094338. if (Vendor() == gl::GLVendor::NVIDIA && !nsCocoaFeatures::IsAtLeastVersion(10,8,3)) { MarkUnsupported(GLFeature::depth_texture); } #endif } if (IsExtensionSupported(GLContext::ARB_pixel_buffer_object)) { MOZ_ASSERT((mSymbols.fMapBuffer && mSymbols.fUnmapBuffer), "ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer" " being available!"); } //////////////////////////////////////////////////////////////////////////// const auto fnLoadForFeature = [this, prefix, trygl](const SymLoadStruct* list, GLFeature feature) { return this->LoadFeatureSymbols(prefix, trygl, list, feature); }; // Check for ARB_framebuffer_objects if (IsSupported(GLFeature::framebuffer_object)) { // https://www.opengl.org/registry/specs/ARB/framebuffer_object.txt const SymLoadStruct symbols[] = { CORE_SYMBOL(IsRenderbuffer), CORE_SYMBOL(BindRenderbuffer), CORE_SYMBOL(DeleteRenderbuffers), CORE_SYMBOL(GenRenderbuffers), CORE_SYMBOL(RenderbufferStorage), CORE_SYMBOL(RenderbufferStorageMultisample), CORE_SYMBOL(GetRenderbufferParameteriv), CORE_SYMBOL(IsFramebuffer), CORE_SYMBOL(BindFramebuffer), CORE_SYMBOL(DeleteFramebuffers), CORE_SYMBOL(GenFramebuffers), CORE_SYMBOL(CheckFramebufferStatus), CORE_SYMBOL(FramebufferTexture2D), CORE_SYMBOL(FramebufferTextureLayer), CORE_SYMBOL(FramebufferRenderbuffer), CORE_SYMBOL(GetFramebufferAttachmentParameteriv), CORE_SYMBOL(BlitFramebuffer), CORE_SYMBOL(GenerateMipmap), END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::framebuffer_object); } if (!IsSupported(GLFeature::framebuffer_object)) { // Check for aux symbols based on extensions if (IsSupported(GLFeature::framebuffer_object_EXT_OES)) { const SymLoadStruct symbols[] = { CORE_EXT_SYMBOL2(IsRenderbuffer, EXT, OES), CORE_EXT_SYMBOL2(BindRenderbuffer, EXT, OES), CORE_EXT_SYMBOL2(DeleteRenderbuffers, EXT, OES), CORE_EXT_SYMBOL2(GenRenderbuffers, EXT, OES), CORE_EXT_SYMBOL2(RenderbufferStorage, EXT, OES), CORE_EXT_SYMBOL2(GetRenderbufferParameteriv, EXT, OES), CORE_EXT_SYMBOL2(IsFramebuffer, EXT, OES), CORE_EXT_SYMBOL2(BindFramebuffer, EXT, OES), CORE_EXT_SYMBOL2(DeleteFramebuffers, EXT, OES), CORE_EXT_SYMBOL2(GenFramebuffers, EXT, OES), CORE_EXT_SYMBOL2(CheckFramebufferStatus, EXT, OES), CORE_EXT_SYMBOL2(FramebufferTexture2D, EXT, OES), CORE_EXT_SYMBOL2(FramebufferRenderbuffer, EXT, OES), CORE_EXT_SYMBOL2(GetFramebufferAttachmentParameteriv, EXT, OES), CORE_EXT_SYMBOL2(GenerateMipmap, EXT, OES), END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::framebuffer_object_EXT_OES); } if (IsSupported(GLFeature::framebuffer_blit)) { const SymLoadStruct symbols[] = { EXT_SYMBOL3(BlitFramebuffer, ANGLE, EXT, NV), END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::framebuffer_blit); } if (IsSupported(GLFeature::framebuffer_multisample)) { const SymLoadStruct symbols[] = { EXT_SYMBOL3(RenderbufferStorageMultisample, ANGLE, APPLE, EXT), END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::framebuffer_multisample); } if (IsExtensionSupported(GLContext::ARB_geometry_shader4) || IsExtensionSupported(GLContext::NV_geometry_program4)) { const SymLoadStruct symbols[] = { EXT_SYMBOL2(FramebufferTextureLayer, ARB, EXT), END_SYMBOLS }; if (!LoadGLSymbols(this, prefix, trygl, symbols, "ARB_geometry_shader4/NV_geometry_program4")) { MarkExtensionUnsupported(GLContext::ARB_geometry_shader4); MarkExtensionUnsupported(GLContext::NV_geometry_program4); } } } if (!IsSupported(GLFeature::framebuffer_object) && !IsSupported(GLFeature::framebuffer_object_EXT_OES)) { NS_ERROR("GLContext requires support for framebuffer objects."); return false; } MOZ_RELEASE_ASSERT(mSymbols.fBindFramebuffer, "GFX: mSymbols.fBindFramebuffer zero or not set."); //////////////// LoadMoreSymbols(prefix, trygl); //////////////////////////////////////////////////////////////////////////// raw_fGetIntegerv(LOCAL_GL_VIEWPORT, mViewportRect); raw_fGetIntegerv(LOCAL_GL_SCISSOR_BOX, mScissorRect); raw_fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); raw_fGetIntegerv(LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE, &mMaxCubeMapTextureSize); raw_fGetIntegerv(LOCAL_GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize); raw_fGetIntegerv(LOCAL_GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); #ifdef XP_MACOSX if (mWorkAroundDriverBugs) { if (mVendor == GLVendor::Intel) { // see bug 737182 for 2D textures, bug 684882 for cube map textures. mMaxTextureSize = std::min(mMaxTextureSize, 4096); mMaxCubeMapTextureSize = std::min(mMaxCubeMapTextureSize, 512); // for good measure, we align renderbuffers on what we do for 2D textures mMaxRenderbufferSize = std::min(mMaxRenderbufferSize, 4096); mNeedsTextureSizeChecks = true; } else if (mVendor == GLVendor::NVIDIA) { // See bug 879656. 8192 fails, 8191 works. mMaxTextureSize = std::min(mMaxTextureSize, 8191); mMaxRenderbufferSize = std::min(mMaxRenderbufferSize, 8191); // Part of the bug 879656, but it also doesn't hurt the 877949 mNeedsTextureSizeChecks = true; } } #endif #ifdef MOZ_X11 if (mWorkAroundDriverBugs) { if (mVendor == GLVendor::Nouveau) { // see bug 814716. Clamp MaxCubeMapTextureSize at 2K for Nouveau. mMaxCubeMapTextureSize = std::min(mMaxCubeMapTextureSize, 2048); mNeedsTextureSizeChecks = true; } else if (mVendor == GLVendor::Intel) { // Bug 1199923. Driver seems to report a larger max size than // actually supported. mMaxTextureSize /= 2; mMaxRenderbufferSize /= 2; mNeedsTextureSizeChecks = true; } } #endif if (mWorkAroundDriverBugs && Renderer() == GLRenderer::AdrenoTM420) { // see bug 1194923. Calling glFlush before glDeleteFramebuffers // prevents occasional driver crash. mNeedsFlushBeforeDeleteFB = true; } #ifdef MOZ_WIDGET_ANDROID if (mWorkAroundDriverBugs && (Renderer() == GLRenderer::AdrenoTM305 || Renderer() == GLRenderer::AdrenoTM320 || Renderer() == GLRenderer::AdrenoTM330) && AndroidBridge::Bridge()->GetAPIVersion() < 21) { // Bug 1164027. Driver crashes when functions such as // glTexImage2D fail due to virtual memory exhaustion. mTextureAllocCrashesOnMapFailure = true; } #endif #if MOZ_WIDGET_ANDROID if (mWorkAroundDriverBugs && Renderer() == GLRenderer::SGX540 && AndroidBridge::Bridge()->GetAPIVersion() <= 15) { // Bug 1288446. Driver sometimes crashes when uploading data to a // texture if the render target has changed since the texture was // rendered from. Calling glCheckFramebufferStatus after // glFramebufferTexture2D prevents the crash. mNeedsCheckAfterAttachTextureToFb = true; } #endif mMaxTextureImageSize = mMaxTextureSize; if (IsSupported(GLFeature::framebuffer_multisample)) { fGetIntegerv(LOCAL_GL_MAX_SAMPLES, (GLint*)&mMaxSamples); } //////////////////////////////////////////////////////////////////////////// // We're ready for final setup. fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0); // TODO: Remove SurfaceCaps::any. if (mCaps.any) { mCaps.any = false; mCaps.color = true; mCaps.alpha = false; } mTexGarbageBin = new TextureGarbageBin(this); MOZ_ASSERT(IsCurrent()); if (ShouldSpew() && IsExtensionSupported(KHR_debug)) { fEnable(LOCAL_GL_DEBUG_OUTPUT); fDisable(LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS); fDebugMessageCallback(&StaticDebugCallback, (void*)this); fDebugMessageControl(LOCAL_GL_DONT_CARE, LOCAL_GL_DONT_CARE, LOCAL_GL_DONT_CARE, 0, nullptr, true); } mVersionString = nsPrintfCString("%u.%u.%u", mVersion / 100, (mVersion / 10) % 10, mVersion % 10); return true; } void GLContext::LoadMoreSymbols(const char* prefix, bool trygl) { const auto fnLoadForExt = [this, prefix, trygl](const SymLoadStruct* list, GLExtensions ext) { return this->LoadExtSymbols(prefix, trygl, list, ext); }; const auto fnLoadForFeature = [this, prefix, trygl](const SymLoadStruct* list, GLFeature feature) { return this->LoadFeatureSymbols(prefix, trygl, list, feature); }; const auto fnLoadFeatureByCore = [this, fnLoadForFeature](const SymLoadStruct* coreList, const SymLoadStruct* extList, GLFeature feature) { const bool useCore = this->IsFeatureProvidedByCoreSymbols(feature); const auto list = useCore ? coreList : extList; return fnLoadForFeature(list, feature); }; if (IsSupported(GLFeature::robustness)) { bool hasRobustness = false; if (!hasRobustness && IsExtensionSupported(ARB_robustness)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetGraphicsResetStatus, { "GetGraphicsResetStatusARB", nullptr } }, END_SYMBOLS }; if (fnLoadForExt(symbols, ARB_robustness)) { hasRobustness = true; } } if (!hasRobustness && IsExtensionSupported(EXT_robustness)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetGraphicsResetStatus, { "GetGraphicsResetStatusEXT", nullptr } }, END_SYMBOLS }; if (fnLoadForExt(symbols, EXT_robustness)) { hasRobustness = true; } } if (!hasRobustness) { MarkUnsupported(GLFeature::robustness); } } if (IsSupported(GLFeature::sync)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fFenceSync, { "FenceSync", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsSync, { "IsSync", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteSync, { "DeleteSync", nullptr } }, { (PRFuncPtr*) &mSymbols.fClientWaitSync, { "ClientWaitSync", nullptr } }, { (PRFuncPtr*) &mSymbols.fWaitSync, { "WaitSync", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetInteger64v, { "GetInteger64v", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetSynciv, { "GetSynciv", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::sync); } if (IsExtensionSupported(OES_EGL_image)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fEGLImageTargetTexture2D, { "EGLImageTargetTexture2DOES", nullptr } }, { (PRFuncPtr*) &mSymbols.fEGLImageTargetRenderbufferStorage, { "EGLImageTargetRenderbufferStorageOES", nullptr } }, END_SYMBOLS }; fnLoadForExt(symbols, OES_EGL_image); } if (IsExtensionSupported(APPLE_texture_range)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fTextureRangeAPPLE, { "TextureRangeAPPLE", nullptr } }, END_SYMBOLS }; fnLoadForExt(symbols, APPLE_texture_range); } if (IsSupported(GLFeature::vertex_array_object)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fIsVertexArray, { "IsVertexArray", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenVertexArrays, { "GenVertexArrays", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindVertexArray, { "BindVertexArray", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, { "DeleteVertexArrays", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fIsVertexArray, { "IsVertexArrayARB", "IsVertexArrayOES", "IsVertexArrayAPPLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenVertexArrays, { "GenVertexArraysARB", "GenVertexArraysOES", "GenVertexArraysAPPLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindVertexArray, { "BindVertexArrayARB", "BindVertexArrayOES", "BindVertexArrayAPPLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, { "DeleteVertexArraysARB", "DeleteVertexArraysOES", "DeleteVertexArraysAPPLE", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::vertex_array_object); } if (IsSupported(GLFeature::draw_instanced)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, { "DrawArraysInstanced", nullptr } }, { (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, { "DrawElementsInstanced", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, { "DrawArraysInstancedARB", "DrawArraysInstancedEXT", "DrawArraysInstancedNV", "DrawArraysInstancedANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, { "DrawElementsInstancedARB", "DrawElementsInstancedEXT", "DrawElementsInstancedNV", "DrawElementsInstancedANGLE", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_instanced); } if (IsSupported(GLFeature::instanced_arrays)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, { "VertexAttribDivisor", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, { "VertexAttribDivisorARB", "VertexAttribDivisorNV", "VertexAttribDivisorANGLE", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::instanced_arrays); } if (IsSupported(GLFeature::texture_storage)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fTexStorage2D, { "TexStorage2D", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexStorage3D, { "TexStorage3D", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fTexStorage2D, { "TexStorage2DEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexStorage3D, { "TexStorage3DEXT", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage); } if (IsSupported(GLFeature::sampler_objects)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGenSamplers, { "GenSamplers", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteSamplers, { "DeleteSamplers", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsSampler, { "IsSampler", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindSampler, { "BindSampler", nullptr } }, { (PRFuncPtr*) &mSymbols.fSamplerParameteri, { "SamplerParameteri", nullptr } }, { (PRFuncPtr*) &mSymbols.fSamplerParameteriv, { "SamplerParameteriv", nullptr } }, { (PRFuncPtr*) &mSymbols.fSamplerParameterf, { "SamplerParameterf", nullptr } }, { (PRFuncPtr*) &mSymbols.fSamplerParameterfv, { "SamplerParameterfv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetSamplerParameteriv, { "GetSamplerParameteriv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetSamplerParameterfv, { "GetSamplerParameterfv", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::sampler_objects); } // ARB_transform_feedback2/NV_transform_feedback2 is a // superset of EXT_transform_feedback/NV_transform_feedback // and adds glPauseTransformFeedback & // glResumeTransformFeedback, which are required for WebGL2. if (IsSupported(GLFeature::transform_feedback2)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fBindBufferBase, { "BindBufferBase", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindBufferRange, { "BindBufferRange", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, { "GenTransformFeedbacks", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindTransformFeedback, { "BindTransformFeedback", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, { "DeleteTransformFeedbacks", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsTransformFeedback, { "IsTransformFeedback", nullptr } }, { (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, { "BeginTransformFeedback", nullptr } }, { (PRFuncPtr*) &mSymbols.fEndTransformFeedback, { "EndTransformFeedback", nullptr } }, { (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, { "TransformFeedbackVaryings", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, { "GetTransformFeedbackVarying", nullptr } }, { (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, { "PauseTransformFeedback", nullptr } }, { (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, { "ResumeTransformFeedback", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fBindBufferBase, { "BindBufferBaseEXT", "BindBufferBaseNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindBufferRange, { "BindBufferRangeEXT", "BindBufferRangeNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, { "GenTransformFeedbacksNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fBindTransformFeedback, { "BindTransformFeedbackNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, { "DeleteTransformFeedbacksNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsTransformFeedback, { "IsTransformFeedbackNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, { "BeginTransformFeedbackEXT", "BeginTransformFeedbackNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fEndTransformFeedback, { "EndTransformFeedbackEXT", "EndTransformFeedbackNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, { "TransformFeedbackVaryingsEXT", "TransformFeedbackVaryingsNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, { "GetTransformFeedbackVaryingEXT", "GetTransformFeedbackVaryingNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, { "PauseTransformFeedbackNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, { "ResumeTransformFeedbackNV", nullptr } }, END_SYMBOLS }; if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage)) { // Also mark bind_buffer_offset as unsupported. MarkUnsupported(GLFeature::bind_buffer_offset); } } if (IsSupported(GLFeature::bind_buffer_offset)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fBindBufferOffset, { "BindBufferOffset", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fBindBufferOffset, { "BindBufferOffsetEXT", "BindBufferOffsetNV", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::bind_buffer_offset); } if (IsSupported(GLFeature::query_counter)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fQueryCounter, { "QueryCounter", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fQueryCounter, { "QueryCounterEXT", "QueryCounterANGLE", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_counter); } if (IsSupported(GLFeature::query_objects)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fBeginQuery, { "BeginQuery", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenQueries, { "GenQueries", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteQueries, { "DeleteQueries", nullptr } }, { (PRFuncPtr*) &mSymbols.fEndQuery, { "EndQuery", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetQueryiv, { "GetQueryiv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, { "GetQueryObjectuiv", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsQuery, { "IsQuery", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fBeginQuery, { "BeginQueryEXT", "BeginQueryANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fGenQueries, { "GenQueriesEXT", "GenQueriesANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteQueries, { "DeleteQueriesEXT", "DeleteQueriesANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fEndQuery, { "EndQueryEXT", "EndQueryANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetQueryiv, { "GetQueryivEXT", "GetQueryivANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, { "GetQueryObjectuivEXT", "GetQueryObjectuivANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsQuery, { "IsQueryEXT", "IsQueryANGLE", nullptr } }, END_SYMBOLS }; if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_objects)) { MarkUnsupported(GLFeature::get_query_object_i64v); MarkUnsupported(GLFeature::get_query_object_iv); MarkUnsupported(GLFeature::occlusion_query); MarkUnsupported(GLFeature::occlusion_query_boolean); MarkUnsupported(GLFeature::occlusion_query2); } } if (IsSupported(GLFeature::get_query_object_i64v)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, { "GetQueryObjecti64v", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, { "GetQueryObjectui64v", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, { "GetQueryObjecti64vEXT", "GetQueryObjecti64vANGLE", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, { "GetQueryObjectui64vEXT", "GetQueryObjectui64vANGLE", nullptr } }, END_SYMBOLS }; if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_i64v)) { MarkUnsupported(GLFeature::query_counter); } } if (IsSupported(GLFeature::get_query_object_iv)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, { "GetQueryObjectiv", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, { "GetQueryObjectivEXT", "GetQueryObjectivANGLE", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_iv); } if (IsSupported(GLFeature::clear_buffers)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fClearBufferfi, { "ClearBufferfi", nullptr } }, { (PRFuncPtr*) &mSymbols.fClearBufferfv, { "ClearBufferfv", nullptr } }, { (PRFuncPtr*) &mSymbols.fClearBufferiv, { "ClearBufferiv", nullptr } }, { (PRFuncPtr*) &mSymbols.fClearBufferuiv, { "ClearBufferuiv", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::clear_buffers); } if (IsSupported(GLFeature::copy_buffer)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fCopyBufferSubData, { "CopyBufferSubData", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::copy_buffer); } if (IsSupported(GLFeature::draw_buffers)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fDrawBuffers, { "DrawBuffers", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fDrawBuffers, { "DrawBuffersARB", "DrawBuffersEXT", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_buffers); } if (IsSupported(GLFeature::draw_range_elements)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fDrawRangeElements, { "DrawRangeElements", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fDrawRangeElements, { "DrawRangeElementsEXT", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_range_elements); } if (IsSupported(GLFeature::get_integer_indexed)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fGetIntegeri_v, { "GetIntegeri_v", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] ={ { (PRFuncPtr*) &mSymbols.fGetIntegeri_v, { "GetIntegerIndexedvEXT", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_integer_indexed); } if (IsSupported(GLFeature::get_integer64_indexed)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetInteger64i_v, { "GetInteger64i_v", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::get_integer64_indexed); } if (IsSupported(GLFeature::gpu_shader4)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetVertexAttribIiv, { "GetVertexAttribIiv", "GetVertexAttribIivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetVertexAttribIuiv, { "GetVertexAttribIuiv", "GetVertexAttribIuivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribI4i, { "VertexAttribI4i", "VertexAttribI4iEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribI4iv, { "VertexAttribI4iv","VertexAttribI4ivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribI4ui, { "VertexAttribI4ui", "VertexAttribI4uiEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribI4uiv, { "VertexAttribI4uiv", "VertexAttribI4uivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fVertexAttribIPointer, { "VertexAttribIPointer", "VertexAttribIPointerEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform1ui, { "Uniform1ui", "Uniform1uiEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform2ui, { "Uniform2ui", "Uniform2uiEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform3ui, { "Uniform3ui", "Uniform3uiEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform4ui, { "Uniform4ui", "Uniform4uiEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform1uiv, { "Uniform1uiv", "Uniform1uivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform2uiv, { "Uniform2uiv", "Uniform2uivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform3uiv, { "Uniform3uiv", "Uniform3uivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniform4uiv, { "Uniform4uiv", "Uniform4uivEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetFragDataLocation, { "GetFragDataLocation", "GetFragDataLocationEXT", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetUniformuiv, { "GetUniformuiv", "GetUniformuivEXT", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::gpu_shader4); } if (IsSupported(GLFeature::map_buffer_range)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fMapBufferRange, { "MapBufferRange", nullptr } }, { (PRFuncPtr*) &mSymbols.fFlushMappedBufferRange, { "FlushMappedBufferRange", nullptr } }, { (PRFuncPtr*) &mSymbols.fUnmapBuffer, { "UnmapBuffer", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::map_buffer_range); } if (IsSupported(GLFeature::texture_3D)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fTexImage3D, { "TexImage3D", nullptr } }, { (PRFuncPtr*) &mSymbols.fTexSubImage3D, { "TexSubImage3D", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fTexSubImage3D, { "TexSubImage3DEXT", "TexSubImage3DOES", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D); } if (IsSupported(GLFeature::texture_3D_compressed)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, { "CompressedTexImage3D", nullptr } }, { (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, { "CompressedTexSubImage3D", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, { "CompressedTexImage3DARB", "CompressedTexImage3DOES", nullptr } }, { (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, { "CompressedTexSubImage3DARB", "CompressedTexSubImage3DOES", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_compressed); } if (IsSupported(GLFeature::texture_3D_copy)) { const SymLoadStruct coreSymbols[] = { { (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, { "CopyTexSubImage3D", nullptr } }, END_SYMBOLS }; const SymLoadStruct extSymbols[] = { { (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, { "CopyTexSubImage3DEXT", "CopyTexSubImage3DOES", nullptr } }, END_SYMBOLS }; fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_copy); } if (IsSupported(GLFeature::uniform_buffer_object)) { // Note: Don't query for glGetActiveUniformName because it is not // supported by GL ES 3. const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGetUniformIndices, { "GetUniformIndices", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetActiveUniformsiv, { "GetActiveUniformsiv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetUniformBlockIndex, { "GetUniformBlockIndex", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockiv, { "GetActiveUniformBlockiv", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockName, { "GetActiveUniformBlockName", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformBlockBinding, { "UniformBlockBinding", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::uniform_buffer_object); } if (IsSupported(GLFeature::uniform_matrix_nonsquare)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fUniformMatrix2x3fv, { "UniformMatrix2x3fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix2x4fv, { "UniformMatrix2x4fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix3x2fv, { "UniformMatrix3x2fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix3x4fv, { "UniformMatrix3x4fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix4x2fv, { "UniformMatrix4x2fv", nullptr } }, { (PRFuncPtr*) &mSymbols.fUniformMatrix4x3fv, { "UniformMatrix4x3fv", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::uniform_matrix_nonsquare); } if (IsSupported(GLFeature::internalformat_query)) { const SymLoadStruct symbols[] = { CORE_SYMBOL(GetInternalformativ), END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::internalformat_query); } if (IsSupported(GLFeature::invalidate_framebuffer)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fInvalidateFramebuffer, { "InvalidateFramebuffer", nullptr } }, { (PRFuncPtr*) &mSymbols.fInvalidateSubFramebuffer, { "InvalidateSubFramebuffer", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::invalidate_framebuffer); } if (IsSupported(GLFeature::prim_restart)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fPrimitiveRestartIndex, { "PrimitiveRestartIndex", "PrimitiveRestartIndexNV", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::prim_restart); } if (IsExtensionSupported(KHR_debug)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fDebugMessageControl, { "DebugMessageControl", "DebugMessageControlKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fDebugMessageInsert, { "DebugMessageInsert", "DebugMessageInsertKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fDebugMessageCallback, { "DebugMessageCallback", "DebugMessageCallbackKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetDebugMessageLog, { "GetDebugMessageLog", "GetDebugMessageLogKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetPointerv, { "GetPointerv", "GetPointervKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fPushDebugGroup, { "PushDebugGroup", "PushDebugGroupKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fPopDebugGroup, { "PopDebugGroup", "PopDebugGroupKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fObjectLabel, { "ObjectLabel", "ObjectLabelKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetObjectLabel, { "GetObjectLabel", "GetObjectLabelKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fObjectPtrLabel, { "ObjectPtrLabel", "ObjectPtrLabelKHR", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetObjectPtrLabel, { "GetObjectPtrLabel", "GetObjectPtrLabelKHR", nullptr } }, END_SYMBOLS }; fnLoadForExt(symbols, KHR_debug); } if (IsExtensionSupported(NV_fence)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fGenFences, { "GenFencesNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fDeleteFences, { "DeleteFencesNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fSetFence, { "SetFenceNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fTestFence, { "TestFenceNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fFinishFence, { "FinishFenceNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fIsFence, { "IsFenceNV", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetFenceiv, { "GetFenceivNV", nullptr } }, END_SYMBOLS }; fnLoadForExt(symbols, NV_fence); } if (IsExtensionSupported(NV_texture_barrier)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fTextureBarrier, { "TextureBarrierNV", nullptr } }, END_SYMBOLS }; fnLoadForExt(symbols, NV_texture_barrier); } if (IsSupported(GLFeature::read_buffer)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fReadBuffer, { "ReadBuffer", nullptr } }, END_SYMBOLS }; fnLoadForFeature(symbols, GLFeature::read_buffer); } if (IsExtensionSupported(APPLE_framebuffer_multisample)) { const SymLoadStruct symbols[] = { { (PRFuncPtr*) &mSymbols.fResolveMultisampleFramebufferAPPLE, { "ResolveMultisampleFramebufferAPPLE", nullptr } }, END_SYMBOLS }; fnLoadForExt(symbols, APPLE_framebuffer_multisample); } // Load developer symbols, don't fail if we can't find them. const SymLoadStruct devSymbols[] = { { (PRFuncPtr*) &mSymbols.fGetTexImage, { "GetTexImage", nullptr } }, { (PRFuncPtr*) &mSymbols.fGetTexLevelParameteriv, { "GetTexLevelParameteriv", nullptr } }, END_SYMBOLS }; const bool warnOnFailures = ShouldSpew(); LoadSymbols(devSymbols, trygl, prefix, warnOnFailures); } #undef CORE_SYMBOL #undef CORE_EXT_SYMBOL2 #undef EXT_SYMBOL2 #undef EXT_SYMBOL3 #undef END_SYMBOLS void GLContext::DebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message) { nsAutoCString sourceStr; switch (source) { case LOCAL_GL_DEBUG_SOURCE_API: sourceStr = NS_LITERAL_CSTRING("SOURCE_API"); break; case LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM: sourceStr = NS_LITERAL_CSTRING("SOURCE_WINDOW_SYSTEM"); break; case LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER: sourceStr = NS_LITERAL_CSTRING("SOURCE_SHADER_COMPILER"); break; case LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY: sourceStr = NS_LITERAL_CSTRING("SOURCE_THIRD_PARTY"); break; case LOCAL_GL_DEBUG_SOURCE_APPLICATION: sourceStr = NS_LITERAL_CSTRING("SOURCE_APPLICATION"); break; case LOCAL_GL_DEBUG_SOURCE_OTHER: sourceStr = NS_LITERAL_CSTRING("SOURCE_OTHER"); break; default: sourceStr = nsPrintfCString("<source 0x%04x>", source); break; } nsAutoCString typeStr; switch (type) { case LOCAL_GL_DEBUG_TYPE_ERROR: typeStr = NS_LITERAL_CSTRING("TYPE_ERROR"); break; case LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: typeStr = NS_LITERAL_CSTRING("TYPE_DEPRECATED_BEHAVIOR"); break; case LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: typeStr = NS_LITERAL_CSTRING("TYPE_UNDEFINED_BEHAVIOR"); break; case LOCAL_GL_DEBUG_TYPE_PORTABILITY: typeStr = NS_LITERAL_CSTRING("TYPE_PORTABILITY"); break; case LOCAL_GL_DEBUG_TYPE_PERFORMANCE: typeStr = NS_LITERAL_CSTRING("TYPE_PERFORMANCE"); break; case LOCAL_GL_DEBUG_TYPE_OTHER: typeStr = NS_LITERAL_CSTRING("TYPE_OTHER"); break; case LOCAL_GL_DEBUG_TYPE_MARKER: typeStr = NS_LITERAL_CSTRING("TYPE_MARKER"); break; default: typeStr = nsPrintfCString("<type 0x%04x>", type); break; } nsAutoCString sevStr; switch (severity) { case LOCAL_GL_DEBUG_SEVERITY_HIGH: sevStr = NS_LITERAL_CSTRING("SEVERITY_HIGH"); break; case LOCAL_GL_DEBUG_SEVERITY_MEDIUM: sevStr = NS_LITERAL_CSTRING("SEVERITY_MEDIUM"); break; case LOCAL_GL_DEBUG_SEVERITY_LOW: sevStr = NS_LITERAL_CSTRING("SEVERITY_LOW"); break; case LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION: sevStr = NS_LITERAL_CSTRING("SEVERITY_NOTIFICATION"); break; default: sevStr = nsPrintfCString("<severity 0x%04x>", severity); break; } printf_stderr("[KHR_debug: 0x%" PRIxPTR "] ID %u: %s, %s, %s:\n %s\n", (uintptr_t)this, id, sourceStr.BeginReading(), typeStr.BeginReading(), sevStr.BeginReading(), message); } void GLContext::InitExtensions() { MOZ_ASSERT(IsCurrent()); std::vector<nsCString> driverExtensionList; if (IsFeatureProvidedByCoreSymbols(GLFeature::get_string_indexed)) { GLuint count = 0; GetUIntegerv(LOCAL_GL_NUM_EXTENSIONS, &count); for (GLuint i = 0; i < count; i++) { // This is UTF-8. const char* rawExt = (const char*)fGetStringi(LOCAL_GL_EXTENSIONS, i); // We CANNOT use nsDependentCString here, because the spec doesn't guarantee // that the pointers returned are different, only that their contents are. // On Flame, each of these index string queries returns the same address. driverExtensionList.push_back(nsCString(rawExt)); } } else { MOZ_ALWAYS_TRUE(!fGetError()); const char* rawExts = (const char*)fGetString(LOCAL_GL_EXTENSIONS); MOZ_ALWAYS_TRUE(!fGetError()); if (rawExts) { nsDependentCString exts(rawExts); SplitByChar(exts, ' ', &driverExtensionList); } } const bool shouldDumpExts = ShouldDumpExts(); if (shouldDumpExts) { printf_stderr("%i GL driver extensions: (*: recognized)\n", (uint32_t)driverExtensionList.size()); } MarkBitfieldByStrings(driverExtensionList, shouldDumpExts, sExtensionNames, &mAvailableExtensions); if (WorkAroundDriverBugs()) { if (Vendor() == GLVendor::Qualcomm) { // Some Adreno drivers do not report GL_OES_EGL_sync, but they really do support it. MarkExtensionSupported(OES_EGL_sync); } if (Vendor() == GLVendor::ATI) { // ATI drivers say this extension exists, but we can't // actually find the EGLImageTargetRenderbufferStorageOES // extension function pointer in the drivers. MarkExtensionUnsupported(OES_EGL_image); } if (Vendor() == GLVendor::Imagination && Renderer() == GLRenderer::SGX540) { // Bug 980048 MarkExtensionUnsupported(OES_EGL_sync); } #ifdef MOZ_WIDGET_ANDROID if (Vendor() == GLVendor::Imagination && Renderer() == GLRenderer::SGX544MP && AndroidBridge::Bridge()->GetAPIVersion() < 21) { // Bug 1026404 MarkExtensionUnsupported(OES_EGL_image); MarkExtensionUnsupported(OES_EGL_image_external); } #endif if (Vendor() == GLVendor::ARM && (Renderer() == GLRenderer::Mali400MP || Renderer() == GLRenderer::Mali450MP)) { // Bug 1264505 MarkExtensionUnsupported(OES_EGL_image_external); } if (Renderer() == GLRenderer::AndroidEmulator) { // the Android emulator, which we use to run B2G reftests on, // doesn't expose the OES_rgb8_rgba8 extension, but it seems to // support it (tautologically, as it only runs on desktop GL). MarkExtensionSupported(OES_rgb8_rgba8); // there seems to be a similar issue for EXT_texture_format_BGRA8888 // on the Android 4.3 emulator MarkExtensionSupported(EXT_texture_format_BGRA8888); } if (Vendor() == GLVendor::VMware && Renderer() == GLRenderer::GalliumLlvmpipe) { // The llvmpipe driver that is used on linux try servers appears to have // buggy support for s3tc/dxt1 compressed textures. // See Bug 975824. MarkExtensionUnsupported(EXT_texture_compression_s3tc); MarkExtensionUnsupported(EXT_texture_compression_dxt1); MarkExtensionUnsupported(ANGLE_texture_compression_dxt3); MarkExtensionUnsupported(ANGLE_texture_compression_dxt5); } #ifdef XP_MACOSX // Bug 1009642: On OSX Mavericks (10.9), the driver for Intel HD // 3000 appears to be buggy WRT updating sub-images of S3TC // textures with glCompressedTexSubImage2D. Works on Intel HD 4000 // and Intel HD 5000/Iris that I tested. // Bug 1124996: Appears to be the same on OSX Yosemite (10.10) if (nsCocoaFeatures::OSXVersionMajor() == 10 && nsCocoaFeatures::OSXVersionMinor() >= 9 && Renderer() == GLRenderer::IntelHD3000) { MarkExtensionUnsupported(EXT_texture_compression_s3tc); } #endif } if (shouldDumpExts) { printf_stderr("\nActivated extensions:\n"); for (size_t i = 0; i < mAvailableExtensions.size(); i++) { if (!mAvailableExtensions[i]) continue; const char* ext = sExtensionNames[i]; printf_stderr("[%i] %s\n", (uint32_t)i, ext); } } } void GLContext::PlatformStartup() { RegisterStrongMemoryReporter(new GfxTexturesReporter()); } // Common code for checking for both GL extensions and GLX extensions. bool GLContext::ListHasExtension(const GLubyte* extensions, const char* extension) { // fix bug 612572 - we were crashing as we were calling this function with extensions==null if (extensions == nullptr || extension == nullptr) return false; const GLubyte* start; GLubyte* where; GLubyte* terminator; /* Extension names should not have spaces. */ where = (GLubyte*) strchr(extension, ' '); if (where || *extension == '\0') return false; /* * It takes a bit of care to be fool-proof about parsing the * OpenGL extensions string. Don't be fooled by sub-strings, * etc. */ start = extensions; for (;;) { where = (GLubyte*) strstr((const char*) start, extension); if (!where) { break; } terminator = where + strlen(extension); if (where == start || *(where - 1) == ' ') { if (*terminator == ' ' || *terminator == '\0') { return true; } } start = terminator; } return false; } GLFormats GLContext::ChooseGLFormats(const SurfaceCaps& caps) const { GLFormats formats; // If we're on ES2 hardware and we have an explicit request for 16 bits of color or less // OR we don't support full 8-bit color, return a 4444 or 565 format. bool bpp16 = caps.bpp16; if (IsGLES()) { if (!IsExtensionSupported(OES_rgb8_rgba8)) bpp16 = true; } else { // RGB565 is uncommon on desktop, requiring ARB_ES2_compatibility. // Since it's also vanishingly useless there, let's not support it. bpp16 = false; } if (bpp16) { MOZ_ASSERT(IsGLES()); if (caps.alpha) { formats.color_texInternalFormat = LOCAL_GL_RGBA; formats.color_texFormat = LOCAL_GL_RGBA; formats.color_texType = LOCAL_GL_UNSIGNED_SHORT_4_4_4_4; formats.color_rbFormat = LOCAL_GL_RGBA4; } else { formats.color_texInternalFormat = LOCAL_GL_RGB; formats.color_texFormat = LOCAL_GL_RGB; formats.color_texType = LOCAL_GL_UNSIGNED_SHORT_5_6_5; formats.color_rbFormat = LOCAL_GL_RGB565; } } else { formats.color_texType = LOCAL_GL_UNSIGNED_BYTE; if (caps.alpha) { formats.color_texInternalFormat = IsGLES() ? LOCAL_GL_RGBA : LOCAL_GL_RGBA8; formats.color_texFormat = LOCAL_GL_RGBA; formats.color_rbFormat = LOCAL_GL_RGBA8; } else { formats.color_texInternalFormat = IsGLES() ? LOCAL_GL_RGB : LOCAL_GL_RGB8; formats.color_texFormat = LOCAL_GL_RGB; formats.color_rbFormat = LOCAL_GL_RGB8; } } uint32_t msaaLevel = gfxPrefs::MSAALevel(); GLsizei samples = msaaLevel * msaaLevel; samples = std::min(samples, mMaxSamples); // Bug 778765. if (WorkAroundDriverBugs() && samples == 1) { samples = 0; } formats.samples = samples; // Be clear that these are 0 if unavailable. formats.depthStencil = 0; if (IsSupported(GLFeature::packed_depth_stencil)) { formats.depthStencil = LOCAL_GL_DEPTH24_STENCIL8; } formats.depth = 0; if (IsGLES()) { if (IsExtensionSupported(OES_depth24)) { formats.depth = LOCAL_GL_DEPTH_COMPONENT24; } else { formats.depth = LOCAL_GL_DEPTH_COMPONENT16; } } else { formats.depth = LOCAL_GL_DEPTH_COMPONENT24; } formats.stencil = LOCAL_GL_STENCIL_INDEX8; return formats; } bool GLContext::IsFramebufferComplete(GLuint fb, GLenum* pStatus) { MOZ_ASSERT(fb); ScopedBindFramebuffer autoFB(this, fb); MOZ_ASSERT(fIsFramebuffer(fb)); GLenum status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER); if (pStatus) *pStatus = status; return status == LOCAL_GL_FRAMEBUFFER_COMPLETE; } void GLContext::AttachBuffersToFB(GLuint colorTex, GLuint colorRB, GLuint depthRB, GLuint stencilRB, GLuint fb, GLenum target) { MOZ_ASSERT(fb); MOZ_ASSERT( !(colorTex && colorRB) ); ScopedBindFramebuffer autoFB(this, fb); MOZ_ASSERT(fIsFramebuffer(fb)); // It only counts after being bound. if (colorTex) { MOZ_ASSERT(fIsTexture(colorTex)); MOZ_ASSERT(target == LOCAL_GL_TEXTURE_2D || target == LOCAL_GL_TEXTURE_RECTANGLE_ARB); fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, target, colorTex, 0); } else if (colorRB) { // On the Android 4.3 emulator, IsRenderbuffer may return false incorrectly. MOZ_ASSERT_IF(Renderer() != GLRenderer::AndroidEmulator, fIsRenderbuffer(colorRB)); fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_RENDERBUFFER, colorRB); } if (depthRB) { MOZ_ASSERT_IF(Renderer() != GLRenderer::AndroidEmulator, fIsRenderbuffer(depthRB)); fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT, LOCAL_GL_RENDERBUFFER, depthRB); } if (stencilRB) { MOZ_ASSERT_IF(Renderer() != GLRenderer::AndroidEmulator, fIsRenderbuffer(stencilRB)); fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT, LOCAL_GL_RENDERBUFFER, stencilRB); } } bool GLContext::AssembleOffscreenFBs(const GLuint colorMSRB, const GLuint depthRB, const GLuint stencilRB, const GLuint texture, GLuint* drawFB_out, GLuint* readFB_out) { if (!colorMSRB && !texture) { MOZ_ASSERT(!depthRB && !stencilRB); if (drawFB_out) *drawFB_out = 0; if (readFB_out) *readFB_out = 0; return true; } ScopedBindFramebuffer autoFB(this); GLuint drawFB = 0; GLuint readFB = 0; if (texture) { readFB = 0; fGenFramebuffers(1, &readFB); BindFB(readFB); fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_TEXTURE_2D, texture, 0); } if (colorMSRB) { drawFB = 0; fGenFramebuffers(1, &drawFB); BindFB(drawFB); fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_RENDERBUFFER, colorMSRB); } else { drawFB = readFB; } MOZ_ASSERT(GetFB() == drawFB); if (depthRB) { fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT, LOCAL_GL_RENDERBUFFER, depthRB); } if (stencilRB) { fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT, LOCAL_GL_RENDERBUFFER, stencilRB); } // We should be all resized. Check for framebuffer completeness. GLenum status; bool isComplete = true; if (!IsFramebufferComplete(drawFB, &status)) { NS_WARNING("DrawFBO: Incomplete"); #ifdef MOZ_GL_DEBUG if (ShouldSpew()) { printf_stderr("Framebuffer status: %X\n", status); } #endif isComplete = false; } if (!IsFramebufferComplete(readFB, &status)) { NS_WARNING("ReadFBO: Incomplete"); #ifdef MOZ_GL_DEBUG if (ShouldSpew()) { printf_stderr("Framebuffer status: %X\n", status); } #endif isComplete = false; } if (drawFB_out) { *drawFB_out = drawFB; } else if (drawFB) { NS_RUNTIMEABORT("drawFB created when not requested!"); } if (readFB_out) { *readFB_out = readFB; } else if (readFB) { NS_RUNTIMEABORT("readFB created when not requested!"); } return isComplete; } void GLContext::ClearSafely() { // bug 659349 --- we must be very careful here: clearing a GL framebuffer is nontrivial, relies on a lot of state, // and in the case of the backbuffer of a WebGL context, state is exposed to scripts. // // The code here is taken from WebGLContext::ForceClearFramebufferWithDefaultValues, but I didn't find a good way of // sharing code with it. WebGL's code is somewhat performance-critical as it is typically called on every frame, so // WebGL keeps track of GL state to avoid having to query it everytime, and also tries to only do work for actually // present buffers (e.g. stencil buffer). Doing that here seems like premature optimization, // as ClearSafely() is called only when e.g. a canvas is resized, not on every animation frame. realGLboolean scissorTestEnabled; realGLboolean ditherEnabled; realGLboolean colorWriteMask[4]; realGLboolean depthWriteMask; GLint stencilWriteMaskFront, stencilWriteMaskBack; GLfloat colorClearValue[4]; GLfloat depthClearValue; GLint stencilClearValue; // save current GL state fGetBooleanv(LOCAL_GL_SCISSOR_TEST, &scissorTestEnabled); fGetBooleanv(LOCAL_GL_DITHER, &ditherEnabled); fGetBooleanv(LOCAL_GL_COLOR_WRITEMASK, colorWriteMask); fGetBooleanv(LOCAL_GL_DEPTH_WRITEMASK, &depthWriteMask); fGetIntegerv(LOCAL_GL_STENCIL_WRITEMASK, &stencilWriteMaskFront); fGetIntegerv(LOCAL_GL_STENCIL_BACK_WRITEMASK, &stencilWriteMaskBack); fGetFloatv(LOCAL_GL_COLOR_CLEAR_VALUE, colorClearValue); fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue); fGetIntegerv(LOCAL_GL_STENCIL_CLEAR_VALUE, &stencilClearValue); // prepare GL state for clearing fDisable(LOCAL_GL_SCISSOR_TEST); fDisable(LOCAL_GL_DITHER); fColorMask(1, 1, 1, 1); fClearColor(0.f, 0.f, 0.f, 0.f); fDepthMask(1); fClearDepth(1.0f); fStencilMask(0xffffffff); fClearStencil(0); // do clear fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT | LOCAL_GL_STENCIL_BUFFER_BIT); // restore GL state after clearing fColorMask(colorWriteMask[0], colorWriteMask[1], colorWriteMask[2], colorWriteMask[3]); fClearColor(colorClearValue[0], colorClearValue[1], colorClearValue[2], colorClearValue[3]); fDepthMask(depthWriteMask); fClearDepth(depthClearValue); fStencilMaskSeparate(LOCAL_GL_FRONT, stencilWriteMaskFront); fStencilMaskSeparate(LOCAL_GL_BACK, stencilWriteMaskBack); fClearStencil(stencilClearValue); if (ditherEnabled) fEnable(LOCAL_GL_DITHER); else fDisable(LOCAL_GL_DITHER); if (scissorTestEnabled) fEnable(LOCAL_GL_SCISSOR_TEST); else fDisable(LOCAL_GL_SCISSOR_TEST); } void GLContext::MarkDestroyed() { if (IsDestroyed()) return; // Null these before they're naturally nulled after dtor, as we want GLContext to // still be alive in *their* dtors. mScreen = nullptr; mBlitHelper = nullptr; mReadTexImageHelper = nullptr; if (MakeCurrent()) { mTexGarbageBin->GLContextTeardown(); } else { NS_WARNING("MakeCurrent() failed during MarkDestroyed! Skipping GL object teardown."); } mSymbols.Zero(); } #ifdef MOZ_GL_DEBUG /* static */ void GLContext::AssertNotPassingStackBufferToTheGL(const void* ptr) { int somethingOnTheStack; const void* someStackPtr = &somethingOnTheStack; const int page_bits = 12; intptr_t page = reinterpret_cast<uintptr_t>(ptr) >> page_bits; intptr_t someStackPage = reinterpret_cast<uintptr_t>(someStackPtr) >> page_bits; uintptr_t pageDistance = std::abs(page - someStackPage); // Explanation for the "distance <= 1" check here as opposed to just // an equality check. // // Here we assume that pages immediately adjacent to the someStackAddress page, // are also stack pages. That allows to catch the case where the calling frame put // a buffer on the stack, and we just crossed the page boundary. That is likely // to happen, precisely, when using stack arrays. I hit that specifically // with CompositorOGL::Initialize. // // In theory we could be unlucky and wrongly assert here. If that happens, // it will only affect debug builds, and looking at stacks we'll be able to // see that this assert is wrong and revert to the conservative and safe // approach of only asserting when address and someStackAddress are // on the same page. bool isStackAddress = pageDistance <= 1; MOZ_ASSERT(!isStackAddress, "Please don't pass stack arrays to the GL. " "Consider using HeapCopyOfStackArray. " "See bug 1005658."); } void GLContext::CreatedProgram(GLContext* aOrigin, GLuint aName) { mTrackedPrograms.AppendElement(NamedResource(aOrigin, aName)); } void GLContext::CreatedShader(GLContext* aOrigin, GLuint aName) { mTrackedShaders.AppendElement(NamedResource(aOrigin, aName)); } void GLContext::CreatedBuffers(GLContext* aOrigin, GLsizei aCount, GLuint* aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedBuffers.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedQueries(GLContext* aOrigin, GLsizei aCount, GLuint* aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedQueries.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedTextures(GLContext* aOrigin, GLsizei aCount, GLuint* aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedTextures.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedFramebuffers(GLContext* aOrigin, GLsizei aCount, GLuint* aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedFramebuffers.AppendElement(NamedResource(aOrigin, aNames[i])); } } void GLContext::CreatedRenderbuffers(GLContext* aOrigin, GLsizei aCount, GLuint* aNames) { for (GLsizei i = 0; i < aCount; ++i) { mTrackedRenderbuffers.AppendElement(NamedResource(aOrigin, aNames[i])); } } static void RemoveNamesFromArray(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames, nsTArray<GLContext::NamedResource>& aArray) { for (GLsizei j = 0; j < aCount; ++j) { GLuint name = aNames[j]; // name 0 can be ignored if (name == 0) continue; for (uint32_t i = 0; i < aArray.Length(); ++i) { if (aArray[i].name == name) { aArray.RemoveElementAt(i); break; } } } } void GLContext::DeletedProgram(GLContext* aOrigin, GLuint aName) { RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedPrograms); } void GLContext::DeletedShader(GLContext* aOrigin, GLuint aName) { RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedShaders); } void GLContext::DeletedBuffers(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedBuffers); } void GLContext::DeletedQueries(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedQueries); } void GLContext::DeletedTextures(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedTextures); } void GLContext::DeletedFramebuffers(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedFramebuffers); } void GLContext::DeletedRenderbuffers(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames) { RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedRenderbuffers); } static void MarkContextDestroyedInArray(GLContext* aContext, nsTArray<GLContext::NamedResource>& aArray) { for (uint32_t i = 0; i < aArray.Length(); ++i) { if (aArray[i].origin == aContext) aArray[i].originDeleted = true; } } void GLContext::SharedContextDestroyed(GLContext* aChild) { MarkContextDestroyedInArray(aChild, mTrackedPrograms); MarkContextDestroyedInArray(aChild, mTrackedShaders); MarkContextDestroyedInArray(aChild, mTrackedTextures); MarkContextDestroyedInArray(aChild, mTrackedFramebuffers); MarkContextDestroyedInArray(aChild, mTrackedRenderbuffers); MarkContextDestroyedInArray(aChild, mTrackedBuffers); MarkContextDestroyedInArray(aChild, mTrackedQueries); } static void ReportArrayContents(const char* title, const nsTArray<GLContext::NamedResource>& aArray) { if (aArray.Length() == 0) return; printf_stderr("%s:\n", title); nsTArray<GLContext::NamedResource> copy(aArray); copy.Sort(); GLContext* lastContext = nullptr; for (uint32_t i = 0; i < copy.Length(); ++i) { if (lastContext != copy[i].origin) { if (lastContext) printf_stderr("\n"); printf_stderr(" [%p - %s] ", copy[i].origin, copy[i].originDeleted ? "deleted" : "live"); lastContext = copy[i].origin; } printf_stderr("%d ", copy[i].name); } printf_stderr("\n"); } void GLContext::ReportOutstandingNames() { if (!ShouldSpew()) return; printf_stderr("== GLContext %p Outstanding ==\n", this); ReportArrayContents("Outstanding Textures", mTrackedTextures); ReportArrayContents("Outstanding Buffers", mTrackedBuffers); ReportArrayContents("Outstanding Queries", mTrackedQueries); ReportArrayContents("Outstanding Programs", mTrackedPrograms); ReportArrayContents("Outstanding Shaders", mTrackedShaders); ReportArrayContents("Outstanding Framebuffers", mTrackedFramebuffers); ReportArrayContents("Outstanding Renderbuffers", mTrackedRenderbuffers); } #endif /* DEBUG */ void GLContext::GuaranteeResolve() { if (mScreen) { mScreen->AssureBlitted(); } fFinish(); } const gfx::IntSize& GLContext::OffscreenSize() const { MOZ_ASSERT(IsOffscreen()); return mScreen->Size(); } bool GLContext::CreateScreenBufferImpl(const IntSize& size, const SurfaceCaps& caps) { UniquePtr<GLScreenBuffer> newScreen = GLScreenBuffer::Create(this, size, caps); if (!newScreen) return false; if (!newScreen->Resize(size)) { return false; } // This will rebind to 0 (Screen) if needed when // it falls out of scope. ScopedBindFramebuffer autoFB(this); mScreen = Move(newScreen); return true; } bool GLContext::ResizeScreenBuffer(const IntSize& size) { if (!IsOffscreenSizeAllowed(size)) return false; return mScreen->Resize(size); } void GLContext::ForceDirtyScreen() { ScopedBindFramebuffer autoFB(0); BeforeGLDrawCall(); // no-op; just pretend we did something AfterGLDrawCall(); } void GLContext::CleanDirtyScreen() { ScopedBindFramebuffer autoFB(0); BeforeGLReadCall(); // no-op; we just want to make sure the Read FBO is updated if it needs to be AfterGLReadCall(); } void GLContext::EmptyTexGarbageBin() { TexGarbageBin()->EmptyGarbage(); } bool GLContext::IsOffscreenSizeAllowed(const IntSize& aSize) const { int32_t biggerDimension = std::max(aSize.width, aSize.height); int32_t maxAllowed = std::min(mMaxRenderbufferSize, mMaxTextureSize); return biggerDimension <= maxAllowed; } bool GLContext::IsOwningThreadCurrent() { return PlatformThread::CurrentId() == mOwningThreadId; } GLBlitHelper* GLContext::BlitHelper() { if (!mBlitHelper) { mBlitHelper.reset(new GLBlitHelper(this)); } return mBlitHelper.get(); } GLReadTexImageHelper* GLContext::ReadTexImageHelper() { if (!mReadTexImageHelper) { mReadTexImageHelper = MakeUnique<GLReadTexImageHelper>(this); } return mReadTexImageHelper.get(); } void GLContext::FlushIfHeavyGLCallsSinceLastFlush() { if (!mHeavyGLCallsSinceLastFlush) { return; } MakeCurrent(); fFlush(); } /*static*/ bool GLContext::ShouldDumpExts() { return gfxEnv::GlDumpExtensions(); } bool DoesStringMatch(const char* aString, const char* aWantedString) { if (!aString || !aWantedString) return false; const char* occurrence = strstr(aString, aWantedString); // aWanted not found if (!occurrence) return false; // aWantedString preceded by alpha character if (occurrence != aString && isalpha(*(occurrence-1))) return false; // aWantedVendor followed by alpha character const char* afterOccurrence = occurrence + strlen(aWantedString); if (isalpha(*afterOccurrence)) return false; return true; } /*static*/ bool GLContext::ShouldSpew() { return gfxEnv::GlSpew(); } void SplitByChar(const nsACString& str, const char delim, std::vector<nsCString>* const out) { uint32_t start = 0; while (true) { int32_t end = str.FindChar(' ', start); if (end == -1) break; uint32_t len = (uint32_t)end - start; nsDependentCSubstring substr(str, start, len); out->push_back(nsCString(substr)); start = end + 1; continue; } nsDependentCSubstring substr(str, start); out->push_back(nsCString(substr)); } void GLContext::Readback(SharedSurface* src, gfx::DataSourceSurface* dest) { MOZ_ASSERT(src && dest); MOZ_ASSERT(dest->GetSize() == src->mSize); MOZ_ASSERT(dest->GetFormat() == (src->mHasAlpha ? SurfaceFormat::B8G8R8A8 : SurfaceFormat::B8G8R8X8)); MakeCurrent(); SharedSurface* prev = GetLockedSurface(); const bool needsSwap = src != prev; if (needsSwap) { if (prev) prev->UnlockProd(); src->LockProd(); } GLuint tempFB = 0; GLuint tempTex = 0; { ScopedBindFramebuffer autoFB(this); // We're consuming from the producer side, so which do we use? // Really, we just want a read-only lock, so ConsumerAcquire is the best match. src->ProducerReadAcquire(); if (src->mAttachType == AttachmentType::Screen) { fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0); } else { fGenFramebuffers(1, &tempFB); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, tempFB); switch (src->mAttachType) { case AttachmentType::GLTexture: fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, src->ProdTextureTarget(), src->ProdTexture(), 0); break; case AttachmentType::GLRenderbuffer: fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_RENDERBUFFER, src->ProdRenderbuffer()); break; default: MOZ_CRASH("GFX: bad `src->mAttachType`."); } DebugOnly<GLenum> status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER); MOZ_ASSERT(status == LOCAL_GL_FRAMEBUFFER_COMPLETE); } if (src->NeedsIndirectReads()) { fGenTextures(1, &tempTex); { ScopedBindTexture autoTex(this, tempTex); GLenum format = src->mHasAlpha ? LOCAL_GL_RGBA : LOCAL_GL_RGB; auto width = src->mSize.width; auto height = src->mSize.height; fCopyTexImage2D(LOCAL_GL_TEXTURE_2D, 0, format, 0, 0, width, height, 0); } fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_TEXTURE_2D, tempTex, 0); } ReadPixelsIntoDataSurface(this, dest); src->ProducerReadRelease(); } if (tempFB) fDeleteFramebuffers(1, &tempFB); if (tempTex) { fDeleteTextures(1, &tempTex); } if (needsSwap) { src->UnlockProd(); if (prev) prev->LockProd(); } } // Do whatever tear-down is necessary after drawing to our offscreen FBO, // if it's bound. void GLContext::AfterGLDrawCall() { if (mScreen) { mScreen->AfterDrawCall(); } mHeavyGLCallsSinceLastFlush = true; } // Do whatever setup is necessary to read from our offscreen FBO, if it's // bound. void GLContext::BeforeGLReadCall() { if (mScreen) mScreen->BeforeReadCall(); } void GLContext::fBindFramebuffer(GLenum target, GLuint framebuffer) { if (!mScreen) { raw_fBindFramebuffer(target, framebuffer); return; } switch (target) { case LOCAL_GL_DRAW_FRAMEBUFFER_EXT: mScreen->BindDrawFB(framebuffer); return; case LOCAL_GL_READ_FRAMEBUFFER_EXT: mScreen->BindReadFB(framebuffer); return; case LOCAL_GL_FRAMEBUFFER: mScreen->BindFB(framebuffer); return; default: // Nothing we care about, likely an error. break; } raw_fBindFramebuffer(target, framebuffer); } void GLContext::fCopyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border) { if (!IsTextureSizeSafeToPassToDriver(target, width, height)) { // pass wrong values to cause the GL to generate GL_INVALID_VALUE. // See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver. level = -1; width = -1; height = -1; border = -1; } BeforeGLReadCall(); bool didCopyTexImage2D = false; if (mScreen) { didCopyTexImage2D = mScreen->CopyTexImage2D(target, level, internalformat, x, y, width, height, border); } if (!didCopyTexImage2D) { raw_fCopyTexImage2D(target, level, internalformat, x, y, width, height, border); } AfterGLReadCall(); } void GLContext::fGetIntegerv(GLenum pname, GLint* params) { switch (pname) { // LOCAL_GL_FRAMEBUFFER_BINDING is equal to // LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT, // so we don't need two cases. case LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT: if (mScreen) { *params = mScreen->GetDrawFB(); } else { raw_fGetIntegerv(pname, params); } break; case LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT: if (mScreen) { *params = mScreen->GetReadFB(); } else { raw_fGetIntegerv(pname, params); } break; case LOCAL_GL_MAX_TEXTURE_SIZE: MOZ_ASSERT(mMaxTextureSize>0); *params = mMaxTextureSize; break; case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE: MOZ_ASSERT(mMaxCubeMapTextureSize>0); *params = mMaxCubeMapTextureSize; break; case LOCAL_GL_MAX_RENDERBUFFER_SIZE: MOZ_ASSERT(mMaxRenderbufferSize>0); *params = mMaxRenderbufferSize; break; case LOCAL_GL_VIEWPORT: for (size_t i = 0; i < 4; i++) { params[i] = mViewportRect[i]; } break; case LOCAL_GL_SCISSOR_BOX: for (size_t i = 0; i < 4; i++) { params[i] = mScissorRect[i]; } break; default: raw_fGetIntegerv(pname, params); break; } } void GLContext::fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels) { BeforeGLReadCall(); bool didReadPixels = false; if (mScreen) { didReadPixels = mScreen->ReadPixels(x, y, width, height, format, type, pixels); } if (!didReadPixels) { raw_fReadPixels(x, y, width, height, format, type, pixels); } AfterGLReadCall(); // Check if GL is giving back 1.0 alpha for // RGBA reads to RGBA images from no-alpha buffers. #ifdef XP_MACOSX if (WorkAroundDriverBugs() && Vendor() == gl::GLVendor::NVIDIA && format == LOCAL_GL_RGBA && type == LOCAL_GL_UNSIGNED_BYTE && !IsCoreProfile() && width && height) { GLint alphaBits = 0; fGetIntegerv(LOCAL_GL_ALPHA_BITS, &alphaBits); if (!alphaBits) { const uint32_t alphaMask = 0xff000000; uint32_t* itr = (uint32_t*)pixels; uint32_t testPixel = *itr; if ((testPixel & alphaMask) != alphaMask) { // We need to set the alpha channel to 1.0 manually. uint32_t* itrEnd = itr + width*height; // Stride is guaranteed to be width*4. for (; itr != itrEnd; itr++) { *itr |= alphaMask; } } } } #endif } void GLContext::fDeleteFramebuffers(GLsizei n, const GLuint* names) { if (mScreen) { // Notify mScreen which framebuffers we're deleting. // Otherwise, we will get framebuffer binding mispredictions. for (int i = 0; i < n; i++) { mScreen->DeletingFB(names[i]); } } // Avoid crash by flushing before glDeleteFramebuffers. See bug 1194923. if (mNeedsFlushBeforeDeleteFB) { fFlush(); } if (n == 1 && *names == 0) { // Deleting framebuffer 0 causes hangs on the DROID. See bug 623228. } else { raw_fDeleteFramebuffers(n, names); } TRACKING_CONTEXT(DeletedFramebuffers(this, n, names)); } #ifdef MOZ_WIDGET_ANDROID /** * Conservatively estimate whether there is enough available * contiguous virtual address space to map a newly allocated texture. */ static bool WillTextureMapSucceed(GLsizei width, GLsizei height, GLenum format, GLenum type) { bool willSucceed = false; // Some drivers leave large gaps between textures, so require // there to be double the actual size of the texture available. size_t size = width * height * GetBytesPerTexel(format, type) * 2; void *p = mmap(nullptr, size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (p != MAP_FAILED) { willSucceed = true; munmap(p, size); } return willSucceed; } #endif // MOZ_WIDGET_ANDROID void GLContext::fTexImage2D(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels) { if (!IsTextureSizeSafeToPassToDriver(target, width, height)) { // pass wrong values to cause the GL to generate GL_INVALID_VALUE. // See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver. level = -1; width = -1; height = -1; border = -1; } #if MOZ_WIDGET_ANDROID if (mTextureAllocCrashesOnMapFailure) { // We have no way of knowing whether this texture already has // storage allocated for it, and therefore whether this check // is necessary. We must therefore assume it does not and // always perform the check. if (!WillTextureMapSucceed(width, height, internalformat, type)) { return; } } #endif raw_fTexImage2D(target, level, internalformat, width, height, border, format, type, pixels); } GLuint GLContext::GetDrawFB() { if (mScreen) return mScreen->GetDrawFB(); GLuint ret = 0; GetUIntegerv(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT, &ret); return ret; } GLuint GLContext::GetReadFB() { if (mScreen) return mScreen->GetReadFB(); GLenum bindEnum = IsSupported(GLFeature::split_framebuffer) ? LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT : LOCAL_GL_FRAMEBUFFER_BINDING; GLuint ret = 0; GetUIntegerv(bindEnum, &ret); return ret; } GLuint GLContext::GetFB() { if (mScreen) { // This has a very important extra assert that checks that we're // not accidentally ignoring a situation where the draw and read // FBs differ. return mScreen->GetFB(); } GLuint ret = 0; GetUIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &ret); return ret; } bool GLContext::InitOffscreen(const gfx::IntSize& size, const SurfaceCaps& caps) { if (!CreateScreenBuffer(size, caps)) return false; MakeCurrent(); fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0); fScissor(0, 0, size.width, size.height); fViewport(0, 0, size.width, size.height); mCaps = mScreen->mCaps; MOZ_ASSERT(!mCaps.any); return true; } bool GLContext::IsDrawingToDefaultFramebuffer() { return Screen()->IsDrawFramebufferDefault(); } GLuint CreateTexture(GLContext* aGL, GLenum aInternalFormat, GLenum aFormat, GLenum aType, const gfx::IntSize& aSize, bool linear) { GLuint tex = 0; aGL->fGenTextures(1, &tex); ScopedBindTexture autoTex(aGL, tex); aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, linear ? LOCAL_GL_LINEAR : LOCAL_GL_NEAREST); aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, linear ? LOCAL_GL_LINEAR : LOCAL_GL_NEAREST); aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE); aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE); aGL->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, aInternalFormat, aSize.width, aSize.height, 0, aFormat, aType, nullptr); return tex; } GLuint CreateTextureForOffscreen(GLContext* aGL, const GLFormats& aFormats, const gfx::IntSize& aSize) { MOZ_ASSERT(aFormats.color_texInternalFormat); MOZ_ASSERT(aFormats.color_texFormat); MOZ_ASSERT(aFormats.color_texType); GLenum internalFormat = aFormats.color_texInternalFormat; GLenum unpackFormat = aFormats.color_texFormat; GLenum unpackType = aFormats.color_texType; if (aGL->IsANGLE()) { MOZ_ASSERT(internalFormat == LOCAL_GL_RGBA); MOZ_ASSERT(unpackFormat == LOCAL_GL_RGBA); MOZ_ASSERT(unpackType == LOCAL_GL_UNSIGNED_BYTE); internalFormat = LOCAL_GL_BGRA_EXT; unpackFormat = LOCAL_GL_BGRA_EXT; } return CreateTexture(aGL, internalFormat, unpackFormat, unpackType, aSize); } uint32_t GetBytesPerTexel(GLenum format, GLenum type) { // If there is no defined format or type, we're not taking up any memory if (!format || !type) { return 0; } if (format == LOCAL_GL_DEPTH_COMPONENT) { if (type == LOCAL_GL_UNSIGNED_SHORT) return 2; else if (type == LOCAL_GL_UNSIGNED_INT) return 4; } else if (format == LOCAL_GL_DEPTH_STENCIL) { if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT) return 4; } if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT || type == LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV) { uint32_t multiplier = type == LOCAL_GL_UNSIGNED_BYTE ? 1 : 4; switch (format) { case LOCAL_GL_ALPHA: case LOCAL_GL_LUMINANCE: return 1 * multiplier; case LOCAL_GL_LUMINANCE_ALPHA: return 2 * multiplier; case LOCAL_GL_RGB: return 3 * multiplier; case LOCAL_GL_RGBA: case LOCAL_GL_BGRA_EXT: return 4 * multiplier; default: break; } } else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 || type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 || type == LOCAL_GL_UNSIGNED_SHORT_5_6_5) { return 2; } gfxCriticalError() << "Unknown texture type " << type << " or format " << format; return 0; } } /* namespace gl */ } /* namespace mozilla */