void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { fMSFBOType = kNone_MSFBOType; if (kDesktop_GrGLBinding != ctxInfo.binding()) { // We prefer the EXT/IMG extension over ES3 MSAA because we've observed // ES3 driver bugs on at least one device with a tiled GPU (N10). if (ctxInfo.hasExtension("GL_EXT_multisampled_render_to_texture")) { fMSFBOType = kES_EXT_MsToTexture_MSFBOType; } else if (ctxInfo.hasExtension("GL_IMG_multisampled_render_to_texture")) { fMSFBOType = kES_IMG_MsToTexture_MSFBOType; } else if (!GR_GL_IGNORE_ES3_MSAA && ctxInfo.version() >= GR_GL_VER(3,0)) { fMSFBOType = GrGLCaps::kES_3_0_MSFBOType; } else if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) { // chrome's extension is equivalent to the EXT msaa // and fbo_blit extensions. fMSFBOType = kDesktop_EXT_MSFBOType; } else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) { fMSFBOType = kES_Apple_MSFBOType; } } else { if ((ctxInfo.version() >= GR_GL_VER(3,0)) || ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { fMSFBOType = GrGLCaps::kDesktop_ARB_MSFBOType; } else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") && ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) { fMSFBOType = GrGLCaps::kDesktop_EXT_MSFBOType; } } }
void GrGLCaps::initStencilFormats(const GrGLContextInfo& ctxInfo) { // Build up list of legal stencil formats (though perhaps not supported on // the particular gpu/driver) from most preferred to least. // these consts are in order of most preferred to least preferred // we don't bother with GL_STENCIL_INDEX1 or GL_DEPTH32F_STENCIL8 static const StencilFormat // internal Format stencil bits total bits packed? gS8 = {GR_GL_STENCIL_INDEX8, 8, 8, false}, gS16 = {GR_GL_STENCIL_INDEX16, 16, 16, false}, gD24S8 = {GR_GL_DEPTH24_STENCIL8, 8, 32, true }, gS4 = {GR_GL_STENCIL_INDEX4, 4, 4, false}, // gS = {GR_GL_STENCIL_INDEX, kUnknownBitCount, kUnknownBitCount, false}, gDS = {GR_GL_DEPTH_STENCIL, kUnknownBitCount, kUnknownBitCount, true }; if (kDesktop_GrGLBinding == ctxInfo.binding()) { bool supportsPackedDS = ctxInfo.version() >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_packed_depth_stencil") || ctxInfo.hasExtension("GL_ARB_framebuffer_object"); // S1 thru S16 formats are in GL 3.0+, EXT_FBO, and ARB_FBO since we // require FBO support we can expect these are legal formats and don't // check. These also all support the unsized GL_STENCIL_INDEX. fStencilFormats.push_back() = gS8; fStencilFormats.push_back() = gS16; if (supportsPackedDS) { fStencilFormats.push_back() = gD24S8; } fStencilFormats.push_back() = gS4; if (supportsPackedDS) { fStencilFormats.push_back() = gDS; } } else { // ES2 has STENCIL_INDEX8 without extensions but requires extensions // for other formats. // ES doesn't support using the unsized format. fStencilFormats.push_back() = gS8; //fStencilFormats.push_back() = gS16; if (ctxInfo.version() >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_OES_packed_depth_stencil")) { fStencilFormats.push_back() = gD24S8; } if (ctxInfo.hasExtension("GL_OES_stencil4")) { fStencilFormats.push_back() = gS4; } } SkASSERT(0 == fStencilVerifiedColorConfigs.count()); fStencilVerifiedColorConfigs.push_back_n(fStencilFormats.count()); }
void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo) { fMSFBOType = kNone_MSFBOType; if (kDesktop_GrGLBinding != ctxInfo.binding()) { if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) { // chrome's extension is equivalent to the EXT msaa // and fbo_blit extensions. fMSFBOType = kDesktopEXT_MSFBOType; } else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) { fMSFBOType = kAppleES_MSFBOType; } } else { if ((ctxInfo.version() >= GR_GL_VER(3,0)) || ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { fMSFBOType = GrGLCaps::kDesktopARB_MSFBOType; } else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") && ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) { fMSFBOType = GrGLCaps::kDesktopEXT_MSFBOType; } // TODO: We could populate fMSAACoverageModes using GetInternalformativ // on GL 4.2+. It's format-specific, though. See also // http://code.google.com/p/skia/issues/detail?id=470 about using actual // rather than requested sample counts in cache key. if (ctxInfo.hasExtension("GL_NV_framebuffer_multisample_coverage")) { fCoverageAAType = kNVDesktop_CoverageAAType; GrGLint count; GR_GL_GetIntegerv(ctxInfo.interface(), GR_GL_MAX_MULTISAMPLE_COVERAGE_MODES, &count); fMSAACoverageModes.setCount(count); GR_GL_GetIntegerv(ctxInfo.interface(), GR_GL_MULTISAMPLE_COVERAGE_MODES, (int*)&fMSAACoverageModes[0]); // The NV driver seems to return the modes already sorted but the // spec doesn't require this. So we sort. SkQSortCompareProc compareProc = reinterpret_cast<SkQSortCompareProc>(&coverage_mode_compare); SkQSort(&fMSAACoverageModes[0], count, sizeof(MSAACoverageMode), compareProc); } } if (kNone_MSFBOType != fMSFBOType) { GR_GL_GetIntegerv(ctxInfo.interface(), GR_GL_MAX_SAMPLES, &fMaxSampleCount); } }
void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo) { fMSFBOType = kNone_MSFBOType; if (kDesktop_GrGLBinding != ctxInfo.binding()) { if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) { // chrome's extension is equivalent to the EXT msaa // and fbo_blit extensions. fMSFBOType = kDesktopEXT_MSFBOType; } else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) { fMSFBOType = kAppleES_MSFBOType; } } else { if ((ctxInfo.version() >= GR_GL_VER(3,0)) || ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { fMSFBOType = GrGLCaps::kDesktopARB_MSFBOType; } else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") && ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) { fMSFBOType = GrGLCaps::kDesktopEXT_MSFBOType; } } }
void GrGLCaps::init(const GrGLContextInfo& ctxInfo) { this->reset(); if (!ctxInfo.isInitialized()) { return; } const GrGLInterface* gli = ctxInfo.interface(); GrGLBinding binding = ctxInfo.binding(); GrGLVersion version = ctxInfo.version(); if (kES2_GrGLBinding == binding) { GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS, &fMaxFragmentUniformVectors); } else { GrAssert(kDesktop_GrGLBinding == binding); GrGLint max; GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max); fMaxFragmentUniformVectors = max / 4; } if (kDesktop_GrGLBinding == binding) { fRGBA8RenderbufferSupport = true; } else { fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") || ctxInfo.hasExtension("GL_ARM_rgba8"); } if (kDesktop_GrGLBinding == binding) { fBGRAFormatSupport = version >= GR_GL_VER(1,2) || ctxInfo.hasExtension("GL_EXT_bgra"); } else { bool hasBGRAExt = false; if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) { fBGRAFormatSupport = true; } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) { fBGRAFormatSupport = true; fBGRAIsInternalFormat = true; } GrAssert(fBGRAFormatSupport || kSkia8888_PM_GrPixelConfig != kBGRA_8888_PM_GrPixelConfig); } if (kDesktop_GrGLBinding == binding) { fTextureSwizzleSupport = version >= GR_GL_VER(3,3) || ctxInfo.hasExtension("GL_ARB_texture_swizzle"); } else { fTextureSwizzleSupport = false; } if (kDesktop_GrGLBinding == binding) { fUnpackRowLengthSupport = true; fUnpackFlipYSupport = false; fPackRowLengthSupport = true; fPackFlipYSupport = false; } else { fUnpackRowLengthSupport =ctxInfo.hasExtension("GL_EXT_unpack_subimage"); fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy"); // no extension for pack row length fPackRowLengthSupport = false; fPackFlipYSupport = ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order"); } fTextureUsageSupport = (kES2_GrGLBinding == binding) && ctxInfo.hasExtension("GL_ANGLE_texture_usage"); // Tex storage is in desktop 4.2 and can be an extension to desktop or ES. fTexStorageSupport = (kDesktop_GrGLBinding == binding && version >= GR_GL_VER(4,2)) || ctxInfo.hasExtension("GL_ARB_texture_storage") || ctxInfo.hasExtension("GL_EXT_texture_storage"); // ARB_texture_rg is part of OpenGL 3.0 if (kDesktop_GrGLBinding == binding) { fTextureRedSupport = version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_ARB_texture_rg"); } else { fTextureRedSupport = ctxInfo.hasExtension("GL_ARB_texture_rg"); } this->initFSAASupport(ctxInfo); this->initStencilFormats(ctxInfo); }
void GrGLCaps::init(const GrGLContextInfo& ctxInfo) { this->reset(); if (!ctxInfo.isInitialized()) { return; } const GrGLInterface* gli = ctxInfo.interface(); GrGLBinding binding = ctxInfo.binding(); GrGLVersion version = ctxInfo.version(); if (kES2_GrGLBinding == binding) { GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS, &fMaxFragmentUniformVectors); } else { GrAssert(kDesktop_GrGLBinding == binding); GrGLint max; GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max); fMaxFragmentUniformVectors = max / 4; } GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes); if (kDesktop_GrGLBinding == binding) { fRGBA8RenderbufferSupport = true; } else { fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") || ctxInfo.hasExtension("GL_ARM_rgba8"); } if (kDesktop_GrGLBinding == binding) { fBGRAFormatSupport = version >= GR_GL_VER(1,2) || ctxInfo.hasExtension("GL_EXT_bgra"); } else { if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) { fBGRAFormatSupport = true; } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) { fBGRAFormatSupport = true; fBGRAIsInternalFormat = true; } GrAssert(fBGRAFormatSupport || kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig); } if (kDesktop_GrGLBinding == binding) { fTextureSwizzleSupport = version >= GR_GL_VER(3,3) || ctxInfo.hasExtension("GL_ARB_texture_swizzle"); } else { fTextureSwizzleSupport = false; } if (kDesktop_GrGLBinding == binding) { fUnpackRowLengthSupport = true; fUnpackFlipYSupport = false; fPackRowLengthSupport = true; fPackFlipYSupport = false; } else { fUnpackRowLengthSupport =ctxInfo.hasExtension("GL_EXT_unpack_subimage"); fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy"); // no extension for pack row length fPackRowLengthSupport = false; fPackFlipYSupport = ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order"); } fTextureUsageSupport = (kES2_GrGLBinding == binding) && ctxInfo.hasExtension("GL_ANGLE_texture_usage"); // Tex storage is in desktop 4.2 and can be an extension to desktop or ES. fTexStorageSupport = (kDesktop_GrGLBinding == binding && version >= GR_GL_VER(4,2)) || ctxInfo.hasExtension("GL_ARB_texture_storage") || ctxInfo.hasExtension("GL_EXT_texture_storage"); // ARB_texture_rg is part of OpenGL 3.0 if (kDesktop_GrGLBinding == binding) { fTextureRedSupport = version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_ARB_texture_rg"); } else { fTextureRedSupport = ctxInfo.hasExtension("GL_EXT_texture_rg"); } fImagingSupport = kDesktop_GrGLBinding == binding && ctxInfo.hasExtension("GL_ARB_imaging"); // ES 2 only guarantees RGBA/uchar + one other format/type combo for // ReadPixels. The other format has to checked at run-time since it // can change based on which render target is bound fTwoFormatLimit = kES2_GrGLBinding == binding; // Known issue on at least some Intel platforms: // http://code.google.com/p/skia/issues/detail?id=946 if (kIntel_GrGLVendor != ctxInfo.vendor()) { fFragCoordsConventionSupport = ctxInfo.glslGeneration() >= k150_GrGLSLGeneration || ctxInfo.hasExtension("GL_ARB_fragment_coord_conventions"); } this->initFSAASupport(ctxInfo); this->initStencilFormats(ctxInfo); }
void GrGLCaps::init(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { this->reset(); if (!ctxInfo.isInitialized()) { return; } GrGLBinding binding = ctxInfo.binding(); GrGLVersion version = ctxInfo.version(); /************************************************************************** * Caps specific to GrGLCaps **************************************************************************/ if (kES2_GrGLBinding == binding) { GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS, &fMaxFragmentUniformVectors); } else { GrAssert(kDesktop_GrGLBinding == binding); GrGLint max; GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max); fMaxFragmentUniformVectors = max / 4; } GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes); if (kDesktop_GrGLBinding == binding) { fRGBA8RenderbufferSupport = true; } else { fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") || ctxInfo.hasExtension("GL_ARM_rgba8"); } if (kDesktop_GrGLBinding == binding) { fBGRAFormatSupport = version >= GR_GL_VER(1,2) || ctxInfo.hasExtension("GL_EXT_bgra"); } else { if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) { fBGRAFormatSupport = true; } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) { fBGRAFormatSupport = true; fBGRAIsInternalFormat = true; } GrAssert(fBGRAFormatSupport || kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig); } if (kDesktop_GrGLBinding == binding) { fTextureSwizzleSupport = version >= GR_GL_VER(3,3) || ctxInfo.hasExtension("GL_ARB_texture_swizzle"); } else { fTextureSwizzleSupport = false; } if (kDesktop_GrGLBinding == binding) { fUnpackRowLengthSupport = true; fUnpackFlipYSupport = false; fPackRowLengthSupport = true; fPackFlipYSupport = false; } else { fUnpackRowLengthSupport =ctxInfo.hasExtension("GL_EXT_unpack_subimage"); fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy"); // no extension for pack row length fPackRowLengthSupport = false; fPackFlipYSupport = ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order"); } fTextureUsageSupport = (kES2_GrGLBinding == binding) && ctxInfo.hasExtension("GL_ANGLE_texture_usage"); // Tex storage is in desktop 4.2 and can be an extension to desktop or ES. fTexStorageSupport = (kDesktop_GrGLBinding == binding && version >= GR_GL_VER(4,2)) || ctxInfo.hasExtension("GL_ARB_texture_storage") || ctxInfo.hasExtension("GL_EXT_texture_storage"); // ARB_texture_rg is part of OpenGL 3.0 if (kDesktop_GrGLBinding == binding) { fTextureRedSupport = version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_ARB_texture_rg"); } else { fTextureRedSupport = ctxInfo.hasExtension("GL_EXT_texture_rg"); } fImagingSupport = kDesktop_GrGLBinding == binding && ctxInfo.hasExtension("GL_ARB_imaging"); // ES 2 only guarantees RGBA/uchar + one other format/type combo for // ReadPixels. The other format has to checked at run-time since it // can change based on which render target is bound fTwoFormatLimit = kES2_GrGLBinding == binding; // Known issue on at least some Intel platforms: // http://code.google.com/p/skia/issues/detail?id=946 if (kIntel_GrGLVendor != ctxInfo.vendor()) { fFragCoordsConventionSupport = ctxInfo.glslGeneration() >= k150_GrGLSLGeneration || ctxInfo.hasExtension("GL_ARB_fragment_coord_conventions"); } // SGX and Mali GPUs that are based on a tiled-deferred architecture that have trouble with // frequently changing VBOs. We've measured a performance increase using non-VBO vertex // data for dynamic content on these GPUs. Perhaps we should read the renderer string and // limit this decision to specific GPU families rather than basing it on the vendor alone. if (!GR_GL_MUST_USE_VBO && (kARM_GrGLVendor == ctxInfo.vendor() || kImagination_GrGLVendor == ctxInfo.vendor())) { fUseNonVBOVertexAndIndexDynamicData = true; } if (kDesktop_GrGLBinding == binding && version >= GR_GL_VER(3, 2)) { GrGLint profileMask; GR_GL_GetIntegerv(gli, GR_GL_CONTEXT_PROFILE_MASK, &profileMask); fIsCoreProfile = SkToBool(profileMask & GR_GL_CONTEXT_CORE_PROFILE_BIT); } fDiscardFBSupport = ctxInfo.hasExtension("GL_EXT_discard_framebuffer"); if (kDesktop_GrGLBinding == binding) { fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_ARB_vertex_array_object"); } else { fVertexArrayObjectSupport = ctxInfo.hasExtension("GL_OES_vertex_array_object"); } this->initFSAASupport(ctxInfo, gli); this->initStencilFormats(ctxInfo); /************************************************************************** * GrDrawTargetCaps fields **************************************************************************/ GrGLint maxTextureUnits; // check FS and fixed-function texture unit limits // we only use textures in the fragment stage currently. // checks are > to make sure we have a spare unit. GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits); GrGLint numFormats; GR_GL_GetIntegerv(gli, GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats); SkAutoSTMalloc<10, GrGLint> formats(numFormats); GR_GL_GetIntegerv(gli, GR_GL_COMPRESSED_TEXTURE_FORMATS, formats); for (int i = 0; i < numFormats; ++i) { if (formats[i] == GR_GL_PALETTE8_RGBA8) { f8BitPaletteSupport = true; break; } } if (kDesktop_GrGLBinding == binding) { // we could also look for GL_ATI_separate_stencil extension or // GL_EXT_stencil_two_side but they use different function signatures // than GL2.0+ (and than each other). fTwoSidedStencilSupport = (ctxInfo.version() >= GR_GL_VER(2,0)); // supported on GL 1.4 and higher or by extension fStencilWrapOpsSupport = (ctxInfo.version() >= GR_GL_VER(1,4)) || ctxInfo.hasExtension("GL_EXT_stencil_wrap"); } else { // ES 2 has two sided stencil and stencil wrap fTwoSidedStencilSupport = true; fStencilWrapOpsSupport = true; } if (kDesktop_GrGLBinding == binding) { fBufferLockSupport = true; // we require VBO support and the desktop VBO extension includes // glMapBuffer. } else { fBufferLockSupport = ctxInfo.hasExtension("GL_OES_mapbuffer"); } if (kDesktop_GrGLBinding == binding) { if (ctxInfo.version() >= GR_GL_VER(2,0) || ctxInfo.hasExtension("GL_ARB_texture_non_power_of_two")) { fNPOTTextureTileSupport = true; } else { fNPOTTextureTileSupport = false; } } else { // Unextended ES2 supports NPOT textures with clamp_to_edge and non-mip filters only fNPOTTextureTileSupport = ctxInfo.hasExtension("GL_OES_texture_npot"); } fHWAALineSupport = (kDesktop_GrGLBinding == binding); GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_SIZE, &fMaxTextureSize); GR_GL_GetIntegerv(gli, GR_GL_MAX_RENDERBUFFER_SIZE, &fMaxRenderTargetSize); // Our render targets are always created with textures as the color // attachment, hence this min: fMaxRenderTargetSize = GrMin(fMaxTextureSize, fMaxRenderTargetSize); fPathStencilingSupport = GR_GL_USE_NV_PATH_RENDERING && ctxInfo.hasExtension("GL_NV_path_rendering"); // Enable supported shader-related caps if (kDesktop_GrGLBinding == binding) { fDualSourceBlendingSupport = ctxInfo.version() >= GR_GL_VER(3,3) || ctxInfo.hasExtension("GL_ARB_blend_func_extended"); fShaderDerivativeSupport = true; // we don't support GL_ARB_geometry_shader4, just GL 3.2+ GS fGeometryShaderSupport = ctxInfo.version() >= GR_GL_VER(3,2) && ctxInfo.glslGeneration() >= k150_GrGLSLGeneration; } else { fShaderDerivativeSupport = ctxInfo.hasExtension("GL_OES_standard_derivatives"); } if (GrGLCaps::kImaginationES_MSFBOType == fMSFBOType) { GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES_IMG, &fMaxSampleCount); } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxSampleCount); } }