/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "gl/GrGLInterface.h" #include "gl/GrGLExtensions.h" #include "gl/GrGLUtil.h" #include #if GR_GL_PER_GL_FUNC_CALLBACK namespace { void GrGLDefaultInterfaceCallback(const GrGLInterface*) {} } #endif const GrGLInterface* GrGLInterfaceRemoveNVPR(const GrGLInterface* interface) { GrGLInterface* newInterface = GrGLInterface::NewClone(interface); newInterface->fExtensions.remove("GL_NV_path_rendering"); newInterface->fPathCommands = NULL; newInterface->fPathCoords = NULL; newInterface->fPathSubCommands = NULL; newInterface->fPathSubCoords = NULL; newInterface->fPathString = NULL; newInterface->fPathGlyphs = NULL; newInterface->fPathGlyphRange = NULL; newInterface->fWeightPaths = NULL; newInterface->fCopyPath = NULL; newInterface->fInterpolatePaths = NULL; newInterface->fTransformPath = NULL; newInterface->fPathParameteriv = NULL; newInterface->fPathParameteri = NULL; newInterface->fPathParameterfv = NULL; newInterface->fPathParameterf = NULL; newInterface->fPathDashArray = NULL; newInterface->fGenPaths = NULL; newInterface->fDeletePaths = NULL; newInterface->fIsPath = NULL; newInterface->fPathStencilFunc = NULL; newInterface->fPathStencilDepthOffset = NULL; newInterface->fStencilFillPath = NULL; newInterface->fStencilStrokePath = NULL; newInterface->fStencilFillPathInstanced = NULL; newInterface->fStencilStrokePathInstanced = NULL; newInterface->fPathCoverDepthFunc = NULL; newInterface->fPathColorGen = NULL; newInterface->fPathTexGen = NULL; newInterface->fPathFogGen = NULL; newInterface->fCoverFillPath = NULL; newInterface->fCoverStrokePath = NULL; newInterface->fCoverFillPathInstanced = NULL; newInterface->fCoverStrokePathInstanced = NULL; newInterface->fGetPathParameteriv = NULL; newInterface->fGetPathParameterfv = NULL; newInterface->fGetPathCommands = NULL; newInterface->fGetPathCoords = NULL; newInterface->fGetPathDashArray = NULL; newInterface->fGetPathMetrics = NULL; newInterface->fGetPathMetricRange = NULL; newInterface->fGetPathSpacing = NULL; newInterface->fGetPathColorGeniv = NULL; newInterface->fGetPathColorGenfv = NULL; newInterface->fGetPathTexGeniv = NULL; newInterface->fGetPathTexGenfv = NULL; newInterface->fIsPointInFillPath = NULL; newInterface->fIsPointInStrokePath = NULL; newInterface->fGetPathLength = NULL; newInterface->fPointAlongPath = NULL; return newInterface; } GrGLInterface::GrGLInterface() // TODO: Remove this madness ASAP. : fActiveTexture(&fFunctions.fActiveTexture) , fAttachShader(&fFunctions.fAttachShader) , fBeginQuery(&fFunctions.fBeginQuery) , fBindAttribLocation(&fFunctions.fBindAttribLocation) , fBindBuffer(&fFunctions.fBindBuffer) , fBindFragDataLocation(&fFunctions.fBindFragDataLocation) , fBindFragDataLocationIndexed(&fFunctions.fBindFragDataLocationIndexed) , fBindFramebuffer(&fFunctions.fBindFramebuffer) , fBindRenderbuffer(&fFunctions.fBindRenderbuffer) , fBindTexture(&fFunctions.fBindTexture) , fBindVertexArray(&fFunctions.fBindVertexArray) , fBlendColor(&fFunctions.fBlendColor) , fBlendFunc(&fFunctions.fBlendFunc) , fBlitFramebuffer(&fFunctions.fBlitFramebuffer) , fBufferData(&fFunctions.fBufferData) , fBufferSubData(&fFunctions.fBufferSubData) , fCheckFramebufferStatus(&fFunctions.fCheckFramebufferStatus) , fClear(&fFunctions.fClear) , fClearColor(&fFunctions.fClearColor) , fClearStencil(&fFunctions.fClearStencil) , fClientActiveTexture(&fFunctions.fClientActiveTexture) , fColorMask(&fFunctions.fColorMask) , fCompileShader(&fFunctions.fCompileShader) , fCompressedTexImage2D(&fFunctions.fCompressedTexImage2D) , fCopyTexSubImage2D(&fFunctions.fCopyTexSubImage2D) , fCreateProgram(&fFunctions.fCreateProgram) , fCreateShader(&fFunctions.fCreateShader) , fCullFace(&fFunctions.fCullFace) , fDeleteBuffers(&fFunctions.fDeleteBuffers) , fDeleteFramebuffers(&fFunctions.fDeleteFramebuffers) , fDeleteProgram(&fFunctions.fDeleteProgram) , fDeleteQueries(&fFunctions.fDeleteQueries) , fDeleteRenderbuffers(&fFunctions.fDeleteRenderbuffers) , fDeleteShader(&fFunctions.fDeleteShader) , fDeleteTextures(&fFunctions.fDeleteTextures) , fDeleteVertexArrays(&fFunctions.fDeleteVertexArrays) , fDepthMask(&fFunctions.fDepthMask) , fDisable(&fFunctions.fDisable) , fDisableClientState(&fFunctions.fDisableClientState) , fDisableVertexAttribArray(&fFunctions.fDisableVertexAttribArray) , fDrawArrays(&fFunctions.fDrawArrays) , fDrawBuffer(&fFunctions.fDrawBuffer) , fDrawBuffers(&fFunctions.fDrawBuffers) , fDrawElements(&fFunctions.fDrawElements) , fEnable(&fFunctions.fEnable) , fEnableClientState(&fFunctions.fEnableClientState) , fEnableVertexAttribArray(&fFunctions.fEnableVertexAttribArray) , fEndQuery(&fFunctions.fEndQuery) , fFinish(&fFunctions.fFinish) , fFlush(&fFunctions.fFlush) , fFramebufferRenderbuffer(&fFunctions.fFramebufferRenderbuffer) , fFramebufferTexture2D(&fFunctions.fFramebufferTexture2D) , fFramebufferTexture2DMultisample(&fFunctions.fFramebufferTexture2DMultisample) , fFrontFace(&fFunctions.fFrontFace) , fGenBuffers(&fFunctions.fGenBuffers) , fGenFramebuffers(&fFunctions.fGenFramebuffers) , fGenerateMipmap(&fFunctions.fGenerateMipmap) , fGenQueries(&fFunctions.fGenQueries) , fGenRenderbuffers(&fFunctions.fGenRenderbuffers) , fGenTextures(&fFunctions.fGenTextures) , fGenVertexArrays(&fFunctions.fGenVertexArrays) , fGetBufferParameteriv(&fFunctions.fGetBufferParameteriv) , fGetError(&fFunctions.fGetError) , fGetFramebufferAttachmentParameteriv(&fFunctions.fGetFramebufferAttachmentParameteriv) , fGetIntegerv(&fFunctions.fGetIntegerv) , fGetQueryObjecti64v(&fFunctions.fGetQueryObjecti64v) , fGetQueryObjectiv(&fFunctions.fGetQueryObjectiv) , fGetQueryObjectui64v(&fFunctions.fGetQueryObjectui64v) , fGetQueryObjectuiv(&fFunctions.fGetQueryObjectuiv) , fGetQueryiv(&fFunctions.fGetQueryiv) , fGetProgramInfoLog(&fFunctions.fGetProgramInfoLog) , fGetProgramiv(&fFunctions.fGetProgramiv) , fGetRenderbufferParameteriv(&fFunctions.fGetRenderbufferParameteriv) , fGetShaderInfoLog(&fFunctions.fGetShaderInfoLog) , fGetShaderiv(&fFunctions.fGetShaderiv) , fGetString(&fFunctions.fGetString) , fGetStringi(&fFunctions.fGetStringi) , fGetTexLevelParameteriv(&fFunctions.fGetTexLevelParameteriv) , fGetUniformLocation(&fFunctions.fGetUniformLocation) , fLineWidth(&fFunctions.fLineWidth) , fLinkProgram(&fFunctions.fLinkProgram) , fLoadIdentity(&fFunctions.fLoadIdentity) , fLoadMatrixf(&fFunctions.fLoadMatrixf) , fMapBuffer(&fFunctions.fMapBuffer) , fMatrixMode(&fFunctions.fMatrixMode) , fPixelStorei(&fFunctions.fPixelStorei) , fQueryCounter(&fFunctions.fQueryCounter) , fReadBuffer(&fFunctions.fReadBuffer) , fReadPixels(&fFunctions.fReadPixels) , fRenderbufferStorage(&fFunctions.fRenderbufferStorage) , fRenderbufferStorageMultisampleES2EXT(&fFunctions.fRenderbufferStorageMultisampleES2EXT) , fRenderbufferStorageMultisampleES2APPLE(&fFunctions.fRenderbufferStorageMultisampleES2APPLE) , fRenderbufferStorageMultisample(&fFunctions.fRenderbufferStorageMultisample) , fBindUniformLocation(&fFunctions.fBindUniformLocation) , fResolveMultisampleFramebuffer(&fFunctions.fResolveMultisampleFramebuffer) , fScissor(&fFunctions.fScissor) , fShaderSource(&fFunctions.fShaderSource) , fStencilFunc(&fFunctions.fStencilFunc) , fStencilFuncSeparate(&fFunctions.fStencilFuncSeparate) , fStencilMask(&fFunctions.fStencilMask) , fStencilMaskSeparate(&fFunctions.fStencilMaskSeparate) , fStencilOp(&fFunctions.fStencilOp) , fStencilOpSeparate(&fFunctions.fStencilOpSeparate) , fTexGenf(&fFunctions.fTexGenf) , fTexGenfv(&fFunctions.fTexGenfv) , fTexGeni(&fFunctions.fTexGeni) , fTexImage2D(&fFunctions.fTexImage2D) , fTexParameteri(&fFunctions.fTexParameteri) , fTexParameteriv(&fFunctions.fTexParameteriv) , fTexSubImage2D(&fFunctions.fTexSubImage2D) , fTexStorage2D(&fFunctions.fTexStorage2D) , fDiscardFramebuffer(&fFunctions.fDiscardFramebuffer) , fUniform1f(&fFunctions.fUniform1f) , fUniform1i(&fFunctions.fUniform1i) , fUniform1fv(&fFunctions.fUniform1fv) , fUniform1iv(&fFunctions.fUniform1iv) , fUniform2f(&fFunctions.fUniform2f) , fUniform2i(&fFunctions.fUniform2i) , fUniform2fv(&fFunctions.fUniform2fv) , fUniform2iv(&fFunctions.fUniform2iv) , fUniform3f(&fFunctions.fUniform3f) , fUniform3i(&fFunctions.fUniform3i) , fUniform3fv(&fFunctions.fUniform3fv) , fUniform3iv(&fFunctions.fUniform3iv) , fUniform4f(&fFunctions.fUniform4f) , fUniform4i(&fFunctions.fUniform4i) , fUniform4fv(&fFunctions.fUniform4fv) , fUniform4iv(&fFunctions.fUniform4iv) , fUniformMatrix2fv(&fFunctions.fUniformMatrix2fv) , fUniformMatrix3fv(&fFunctions.fUniformMatrix3fv) , fUniformMatrix4fv(&fFunctions.fUniformMatrix4fv) , fUnmapBuffer(&fFunctions.fUnmapBuffer) , fUseProgram(&fFunctions.fUseProgram) , fVertexAttrib4fv(&fFunctions.fVertexAttrib4fv) , fVertexAttribPointer(&fFunctions.fVertexAttribPointer) , fVertexPointer(&fFunctions.fVertexPointer) , fViewport(&fFunctions.fViewport) , fPathCommands(&fFunctions.fPathCommands) , fPathCoords(&fFunctions.fPathCoords) , fPathSubCommands(&fFunctions.fPathSubCommands) , fPathSubCoords(&fFunctions.fPathSubCoords) , fPathString(&fFunctions.fPathString) , fPathGlyphs(&fFunctions.fPathGlyphs) , fPathGlyphRange(&fFunctions.fPathGlyphRange) , fWeightPaths(&fFunctions.fWeightPaths) , fCopyPath(&fFunctions.fCopyPath) , fInterpolatePaths(&fFunctions.fInterpolatePaths) , fTransformPath(&fFunctions.fTransformPath) , fPathParameteriv(&fFunctions.fPathParameteriv) , fPathParameteri(&fFunctions.fPathParameteri) , fPathParameterfv(&fFunctions.fPathParameterfv) , fPathParameterf(&fFunctions.fPathParameterf) , fPathDashArray(&fFunctions.fPathDashArray) , fGenPaths(&fFunctions.fGenPaths) , fDeletePaths(&fFunctions.fDeletePaths) , fIsPath(&fFunctions.fIsPath) , fPathStencilFunc(&fFunctions.fPathStencilFunc) , fPathStencilDepthOffset(&fFunctions.fPathStencilDepthOffset) , fStencilFillPath(&fFunctions.fStencilFillPath) , fStencilStrokePath(&fFunctions.fStencilStrokePath) , fStencilFillPathInstanced(&fFunctions.fStencilFillPathInstanced) , fStencilStrokePathInstanced(&fFunctions.fStencilStrokePathInstanced) , fPathCoverDepthFunc(&fFunctions.fPathCoverDepthFunc) , fPathColorGen(&fFunctions.fPathColorGen) , fPathTexGen(&fFunctions.fPathTexGen) , fPathFogGen(&fFunctions.fPathFogGen) , fCoverFillPath(&fFunctions.fCoverFillPath) , fCoverStrokePath(&fFunctions.fCoverStrokePath) , fCoverFillPathInstanced(&fFunctions.fCoverFillPathInstanced) , fCoverStrokePathInstanced(&fFunctions.fCoverStrokePathInstanced) , fGetPathParameteriv(&fFunctions.fGetPathParameteriv) , fGetPathParameterfv(&fFunctions.fGetPathParameterfv) , fGetPathCommands(&fFunctions.fGetPathCommands) , fGetPathCoords(&fFunctions.fGetPathCoords) , fGetPathDashArray(&fFunctions.fGetPathDashArray) , fGetPathMetrics(&fFunctions.fGetPathMetrics) , fGetPathMetricRange(&fFunctions.fGetPathMetricRange) , fGetPathSpacing(&fFunctions.fGetPathSpacing) , fGetPathColorGeniv(&fFunctions.fGetPathColorGeniv) , fGetPathColorGenfv(&fFunctions.fGetPathColorGenfv) , fGetPathTexGeniv(&fFunctions.fGetPathTexGeniv) , fGetPathTexGenfv(&fFunctions.fGetPathTexGenfv) , fIsPointInFillPath(&fFunctions.fIsPointInFillPath) , fIsPointInStrokePath(&fFunctions.fIsPointInStrokePath) , fGetPathLength(&fFunctions.fGetPathLength) , fPointAlongPath(&fFunctions.fPointAlongPath) { fStandard = kNone_GrGLStandard; #if GR_GL_PER_GL_FUNC_CALLBACK fCallback = GrGLDefaultInterfaceCallback; fCallbackData = 0; #endif } GrGLInterface* GrGLInterface::NewClone(const GrGLInterface* interface) { SkASSERT(NULL != interface); GrGLInterface* clone = SkNEW(GrGLInterface); clone->fStandard = interface->fStandard; clone->fExtensions = interface->fExtensions; clone->fFunctions = interface->fFunctions; #if GR_GL_PER_GL_FUNC_CALLBACK clone->fCallback = interface->fCallback; clone->fCallbackData = interface->fCallbackData; #endif return clone; } bool GrGLInterface::validate() const { if (kNone_GrGLStandard == fStandard) { return false; } // This const hackery is necessary because the factories in Chromium do not yet initialize // fExtensions. if (!fExtensions.isInitialized()) { GrGLExtensions* extensions = const_cast(&fExtensions); if (!extensions->init(fStandard, fFunctions.fGetString, fFunctions.fGetStringi, fFunctions.fGetIntegerv)) { return false; } } // functions that are always required if (NULL == fFunctions.fActiveTexture || NULL == fFunctions.fAttachShader || NULL == fFunctions.fBindAttribLocation || NULL == fFunctions.fBindBuffer || NULL == fFunctions.fBindTexture || NULL == fFunctions.fBlendFunc || NULL == fFunctions.fBlendColor || // -> GL >= 1.4, ES >= 2.0 or extension NULL == fFunctions.fBufferData || NULL == fFunctions.fBufferSubData || NULL == fFunctions.fClear || NULL == fFunctions.fClearColor || NULL == fFunctions.fClearStencil || NULL == fFunctions.fColorMask || NULL == fFunctions.fCompileShader || NULL == fFunctions.fCopyTexSubImage2D || NULL == fFunctions.fCreateProgram || NULL == fFunctions.fCreateShader || NULL == fFunctions.fCullFace || NULL == fFunctions.fDeleteBuffers || NULL == fFunctions.fDeleteProgram || NULL == fFunctions.fDeleteShader || NULL == fFunctions.fDeleteTextures || NULL == fFunctions.fDepthMask || NULL == fFunctions.fDisable || NULL == fFunctions.fDisableVertexAttribArray || NULL == fFunctions.fDrawArrays || NULL == fFunctions.fDrawElements || NULL == fFunctions.fEnable || NULL == fFunctions.fEnableVertexAttribArray || NULL == fFunctions.fFrontFace || NULL == fFunctions.fGenBuffers || NULL == fFunctions.fGenTextures || NULL == fFunctions.fGetBufferParameteriv || NULL == fFunctions.fGenerateMipmap || NULL == fFunctions.fGetError || NULL == fFunctions.fGetIntegerv || NULL == fFunctions.fGetProgramInfoLog || NULL == fFunctions.fGetProgramiv || NULL == fFunctions.fGetShaderInfoLog || NULL == fFunctions.fGetShaderiv || NULL == fFunctions.fGetString || NULL == fFunctions.fGetUniformLocation || NULL == fFunctions.fLinkProgram || NULL == fFunctions.fLineWidth || NULL == fFunctions.fPixelStorei || NULL == fFunctions.fReadPixels || NULL == fFunctions.fScissor || NULL == fFunctions.fShaderSource || NULL == fFunctions.fStencilFunc || NULL == fFunctions.fStencilMask || NULL == fFunctions.fStencilOp || NULL == fFunctions.fTexImage2D || NULL == fFunctions.fTexParameteri || NULL == fFunctions.fTexParameteriv || NULL == fFunctions.fTexSubImage2D || NULL == fFunctions.fUniform1f || NULL == fFunctions.fUniform1i || NULL == fFunctions.fUniform1fv || NULL == fFunctions.fUniform1iv || NULL == fFunctions.fUniform2f || NULL == fFunctions.fUniform2i || NULL == fFunctions.fUniform2fv || NULL == fFunctions.fUniform2iv || NULL == fFunctions.fUniform3f || NULL == fFunctions.fUniform3i || NULL == fFunctions.fUniform3fv || NULL == fFunctions.fUniform3iv || NULL == fFunctions.fUniform4f || NULL == fFunctions.fUniform4i || NULL == fFunctions.fUniform4fv || NULL == fFunctions.fUniform4iv || NULL == fFunctions.fUniformMatrix2fv || NULL == fFunctions.fUniformMatrix3fv || NULL == fFunctions.fUniformMatrix4fv || NULL == fFunctions.fUseProgram || NULL == fFunctions.fVertexAttrib4fv || NULL == fFunctions.fVertexAttribPointer || NULL == fFunctions.fViewport || NULL == fFunctions.fBindFramebuffer || NULL == fFunctions.fBindRenderbuffer || NULL == fFunctions.fCheckFramebufferStatus || NULL == fFunctions.fDeleteFramebuffers || NULL == fFunctions.fDeleteRenderbuffers || NULL == fFunctions.fFinish || NULL == fFunctions.fFlush || NULL == fFunctions.fFramebufferRenderbuffer || NULL == fFunctions.fFramebufferTexture2D || NULL == fFunctions.fGetFramebufferAttachmentParameteriv || NULL == fFunctions.fGetRenderbufferParameteriv || NULL == fFunctions.fGenFramebuffers || NULL == fFunctions.fGenRenderbuffers || NULL == fFunctions.fRenderbufferStorage) { return false; } GrGLVersion glVer = GrGLGetVersion(this); bool isCoreProfile = false; if (kGL_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,2)) { GrGLint profileMask; GR_GL_GetIntegerv(this, GR_GL_CONTEXT_PROFILE_MASK, &profileMask); isCoreProfile = SkToBool(profileMask & GR_GL_CONTEXT_CORE_PROFILE_BIT); } // Now check that baseline ES/Desktop fns not covered above are present // and that we have fn pointers for any advertised fExtensions that we will // try to use. // these functions are part of ES2, we assume they are available // On the desktop we assume they are available if the extension // is present or GL version is high enough. if (kGLES_GrGLStandard == fStandard) { if (NULL == fFunctions.fStencilFuncSeparate || NULL == fFunctions.fStencilMaskSeparate || NULL == fFunctions.fStencilOpSeparate) { return false; } } else if (kGL_GrGLStandard == fStandard) { if (glVer >= GR_GL_VER(2,0)) { if (NULL == fFunctions.fStencilFuncSeparate || NULL == fFunctions.fStencilMaskSeparate || NULL == fFunctions.fStencilOpSeparate) { return false; } } if (glVer >= GR_GL_VER(3,0) && NULL == fFunctions.fBindFragDataLocation) { return false; } if (glVer >= GR_GL_VER(2,0) || fExtensions.has("GL_ARB_draw_buffers")) { if (NULL == fFunctions.fDrawBuffers) { return false; } } if (glVer >= GR_GL_VER(1,5) || fExtensions.has("GL_ARB_occlusion_query")) { if (NULL == fFunctions.fGenQueries || NULL == fFunctions.fDeleteQueries || NULL == fFunctions.fBeginQuery || NULL == fFunctions.fEndQuery || NULL == fFunctions.fGetQueryiv || NULL == fFunctions.fGetQueryObjectiv || NULL == fFunctions.fGetQueryObjectuiv) { return false; } } if (glVer >= GR_GL_VER(3,3) || fExtensions.has("GL_ARB_timer_query") || fExtensions.has("GL_EXT_timer_query")) { if (NULL == fFunctions.fGetQueryObjecti64v || NULL == fFunctions.fGetQueryObjectui64v) { return false; } } if (glVer >= GR_GL_VER(3,3) || fExtensions.has("GL_ARB_timer_query")) { if (NULL == fFunctions.fQueryCounter) { return false; } } if (!isCoreProfile) { if (NULL == fFunctions.fClientActiveTexture || NULL == fFunctions.fDisableClientState || NULL == fFunctions.fEnableClientState || NULL == fFunctions.fLoadIdentity || NULL == fFunctions.fLoadMatrixf || NULL == fFunctions.fMatrixMode || NULL == fFunctions.fTexGenf || NULL == fFunctions.fTexGenfv || NULL == fFunctions.fTexGeni || NULL == fFunctions.fVertexPointer) { return false; } } if (fExtensions.has("GL_NV_path_rendering")) { if (NULL == fFunctions.fPathCommands || NULL == fFunctions.fPathCoords || NULL == fFunctions.fPathSubCommands || NULL == fFunctions.fPathSubCoords || NULL == fFunctions.fPathString || NULL == fFunctions.fPathGlyphs || NULL == fFunctions.fPathGlyphRange || NULL == fFunctions.fWeightPaths || NULL == fFunctions.fCopyPath || NULL == fFunctions.fInterpolatePaths || NULL == fFunctions.fTransformPath || NULL == fFunctions.fPathParameteriv || NULL == fFunctions.fPathParameteri || NULL == fFunctions.fPathParameterfv || NULL == fFunctions.fPathParameterf || NULL == fFunctions.fPathDashArray || NULL == fFunctions.fGenPaths || NULL == fFunctions.fDeletePaths || NULL == fFunctions.fIsPath || NULL == fFunctions.fPathStencilFunc || NULL == fFunctions.fPathStencilDepthOffset || NULL == fFunctions.fStencilFillPath || NULL == fFunctions.fStencilStrokePath || NULL == fFunctions.fStencilFillPathInstanced || NULL == fFunctions.fStencilStrokePathInstanced || NULL == fFunctions.fPathCoverDepthFunc || NULL == fFunctions.fPathColorGen || NULL == fFunctions.fPathTexGen || NULL == fFunctions.fPathFogGen || NULL == fFunctions.fCoverFillPath || NULL == fFunctions.fCoverStrokePath || NULL == fFunctions.fCoverFillPathInstanced || NULL == fFunctions.fCoverStrokePathInstanced || NULL == fFunctions.fGetPathParameteriv || NULL == fFunctions.fGetPathParameterfv || NULL == fFunctions.fGetPathCommands || NULL == fFunctions.fGetPathCoords || NULL == fFunctions.fGetPathDashArray || NULL == fFunctions.fGetPathMetrics || NULL == fFunctions.fGetPathMetricRange || NULL == fFunctions.fGetPathSpacing || NULL == fFunctions.fGetPathColorGeniv || NULL == fFunctions.fGetPathColorGenfv || NULL == fFunctions.fGetPathTexGeniv || NULL == fFunctions.fGetPathTexGenfv || NULL == fFunctions.fIsPointInFillPath || NULL == fFunctions.fIsPointInStrokePath || NULL == fFunctions.fGetPathLength || NULL == fFunctions.fPointAlongPath) { return false; } } } // optional function on desktop before 1.3 if (kGL_GrGLStandard != fStandard || (glVer >= GR_GL_VER(1,3)) || fExtensions.has("GL_ARB_texture_compression")) { if (NULL == fFunctions.fCompressedTexImage2D) { return false; } } // part of desktop GL, but not ES if (kGL_GrGLStandard == fStandard && (NULL == fFunctions.fGetTexLevelParameteriv || NULL == fFunctions.fDrawBuffer || NULL == fFunctions.fReadBuffer)) { return false; } // GL_EXT_texture_storage is part of desktop 4.2 // There is a desktop ARB extension and an ES+desktop EXT extension if (kGL_GrGLStandard == fStandard) { if (glVer >= GR_GL_VER(4,2) || fExtensions.has("GL_ARB_texture_storage") || fExtensions.has("GL_EXT_texture_storage")) { if (NULL == fFunctions.fTexStorage2D) { return false; } } } else if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_EXT_texture_storage")) { if (NULL == fFunctions.fTexStorage2D) { return false; } } if (fExtensions.has("GL_EXT_discard_framebuffer")) { // FIXME: Remove this once Chromium is updated to provide this function #if 0 if (NULL == fFunctions.fDiscardFramebuffer) { return false; } #endif } // FBO MSAA if (kGL_GrGLStandard == fStandard) { // GL 3.0 and the ARB extension have multisample + blit if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_ARB_framebuffer_object")) { if (NULL == fFunctions.fRenderbufferStorageMultisample || NULL == fFunctions.fBlitFramebuffer) { return false; } } else { if (fExtensions.has("GL_EXT_framebuffer_blit") && NULL == fFunctions.fBlitFramebuffer) { return false; } if (fExtensions.has("GL_EXT_framebuffer_multisample") && NULL == fFunctions.fRenderbufferStorageMultisample) { return false; } } } else { if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_CHROMIUM_framebuffer_multisample")) { if (NULL == fFunctions.fRenderbufferStorageMultisample || NULL == fFunctions.fBlitFramebuffer) { return false; } } if (fExtensions.has("GL_APPLE_framebuffer_multisample")) { if (NULL == fFunctions.fRenderbufferStorageMultisampleES2APPLE || NULL == fFunctions.fResolveMultisampleFramebuffer) { return false; } } if (fExtensions.has("GL_IMG_multisampled_render_to_texture") || fExtensions.has("GL_EXT_multisampled_render_to_texture")) { if (NULL == fFunctions.fRenderbufferStorageMultisampleES2EXT || NULL == fFunctions.fFramebufferTexture2DMultisample) { return false; } } } // On ES buffer mapping is an extension. On Desktop // buffer mapping was part of original VBO extension // which we require. if (kGL_GrGLStandard == fStandard || fExtensions.has("GL_OES_mapbuffer")) { if (NULL == fFunctions.fMapBuffer || NULL == fFunctions.fUnmapBuffer) { return false; } } // Dual source blending if (kGL_GrGLStandard == fStandard && (glVer >= GR_GL_VER(3,3) || fExtensions.has("GL_ARB_blend_func_extended"))) { if (NULL == fFunctions.fBindFragDataLocationIndexed) { return false; } } // glGetStringi was added in version 3.0 of both desktop and ES. if (glVer >= GR_GL_VER(3, 0)) { if (NULL == fFunctions.fGetStringi) { return false; } } if (kGL_GrGLStandard == fStandard) { if (glVer >= GR_GL_VER(3, 0) || fExtensions.has("GL_ARB_vertex_array_object")) { if (NULL == fFunctions.fBindVertexArray || NULL == fFunctions.fDeleteVertexArrays || NULL == fFunctions.fGenVertexArrays) { return false; } } } else { if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_OES_vertex_array_object")) { if (NULL == fFunctions.fBindVertexArray || NULL == fFunctions.fDeleteVertexArrays || NULL == fFunctions.fGenVertexArrays) { return false; } } } return true; }