| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #ifndef GrGLCaps_DEFINED |
| #define GrGLCaps_DEFINED |
| |
| #include <functional> |
| #include "GrCaps.h" |
| #include "GrGLStencilAttachment.h" |
| #include "GrSwizzle.h" |
| #include "SkChecksum.h" |
| #include "SkTHash.h" |
| #include "SkTArray.h" |
| |
| class GrGLContextInfo; |
| class GrGLRenderTarget; |
| |
| /** |
| * Stores some capabilities of a GL context. Most are determined by the GL |
| * version and the extensions string. It also tracks formats that have passed |
| * the FBO completeness test. |
| */ |
| class GrGLCaps : public GrCaps { |
| public: |
| typedef GrGLStencilAttachment::Format StencilFormat; |
| |
| /** |
| * The type of MSAA for FBOs supported. Different extensions have different |
| * semantics of how / when a resolve is performed. |
| */ |
| enum MSFBOType { |
| /** |
| * no support for MSAA FBOs |
| */ |
| kNone_MSFBOType = 0, |
| /** |
| * OpenGL 3.0+, OpenGL ES 3.0+, GL_ARB_framebuffer_object, |
| * GL_CHROMIUM_framebuffer_multisample, GL_ANGLE_framebuffer_multisample, |
| * or GL_EXT_framebuffer_multisample |
| */ |
| kStandard_MSFBOType, |
| /** |
| * GL_APPLE_framebuffer_multisample ES extension |
| */ |
| kES_Apple_MSFBOType, |
| /** |
| * GL_IMG_multisampled_render_to_texture. This variation does not have MSAA renderbuffers. |
| * Instead the texture is multisampled when bound to the FBO and then resolved automatically |
| * when read. It also defines an alternate value for GL_MAX_SAMPLES (which we call |
| * GR_GL_MAX_SAMPLES_IMG). |
| */ |
| kES_IMG_MsToTexture_MSFBOType, |
| /** |
| * GL_EXT_multisampled_render_to_texture. Same as the IMG one above but uses the standard |
| * GL_MAX_SAMPLES value. |
| */ |
| kES_EXT_MsToTexture_MSFBOType, |
| /** |
| * GL_NV_framebuffer_mixed_samples. |
| */ |
| kMixedSamples_MSFBOType, |
| |
| kLast_MSFBOType = kMixedSamples_MSFBOType |
| }; |
| |
| enum BlitFramebufferFlags { |
| kNoSupport_BlitFramebufferFlag = 1 << 0, |
| kNoScalingOrMirroring_BlitFramebufferFlag = 1 << 1, |
| kResolveMustBeFull_BlitFrambufferFlag = 1 << 2, |
| kNoMSAADst_BlitFramebufferFlag = 1 << 3, |
| kNoFormatConversion_BlitFramebufferFlag = 1 << 4, |
| kNoFormatConversionForMSAASrc_BlitFramebufferFlag = 1 << 5, |
| kRectsMustMatchForMSAASrc_BlitFramebufferFlag = 1 << 6, |
| }; |
| |
| enum InvalidateFBType { |
| kNone_InvalidateFBType, |
| kDiscard_InvalidateFBType, //<! glDiscardFramebuffer() |
| kInvalidate_InvalidateFBType, //<! glInvalidateFramebuffer() |
| |
| kLast_InvalidateFBType = kInvalidate_InvalidateFBType |
| }; |
| |
| enum MapBufferType { |
| kNone_MapBufferType, |
| kMapBuffer_MapBufferType, // glMapBuffer() |
| kMapBufferRange_MapBufferType, // glMapBufferRange() |
| kChromium_MapBufferType, // GL_CHROMIUM_map_sub |
| |
| kLast_MapBufferType = kChromium_MapBufferType, |
| }; |
| |
| enum TransferBufferType { |
| kNone_TransferBufferType, |
| kPBO_TransferBufferType, // ARB_pixel_buffer_object |
| kChromium_TransferBufferType, // CHROMIUM_pixel_transfer_buffer_object |
| |
| kLast_TransferBufferType = kChromium_TransferBufferType, |
| }; |
| |
| /** |
| * Initializes the GrGLCaps to the set of features supported in the current |
| * OpenGL context accessible via ctxInfo. |
| */ |
| GrGLCaps(const GrContextOptions& contextOptions, const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* glInterface); |
| |
| bool isConfigTexturable(GrPixelConfig config) const override { |
| return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kTextureable_Flag); |
| } |
| |
| int getRenderTargetSampleCount(int requestedCount, GrPixelConfig config) const override; |
| int maxRenderTargetSampleCount(GrPixelConfig config) const override; |
| |
| bool isConfigCopyable(GrPixelConfig config) const override { |
| // In GL we have three ways to be able to copy. CopyTexImage, blit, and draw. CopyTexImage |
| // requires the src to be an FBO attachment, blit requires both src and dst to be FBO |
| // attachments, and draw requires the dst to be an FBO attachment. Thus to copy from and to |
| // the same config, we need that config to be bindable to an FBO. |
| return this->canConfigBeFBOColorAttachment(config); |
| } |
| |
| bool canConfigBeFBOColorAttachment(GrPixelConfig config) const { |
| return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kFBOColorAttachment_Flag); |
| } |
| |
| bool isConfigTexSupportEnabled(GrPixelConfig config) const { |
| return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kCanUseTexStorage_Flag); |
| } |
| |
| /** Returns the mapping between GrPixelConfig components and GL internal format components. */ |
| const GrSwizzle& configSwizzle(GrPixelConfig config) const { |
| return fConfigTable[config].fSwizzle; |
| } |
| |
| GrGLenum configSizedInternalFormat(GrPixelConfig config) const { |
| return fConfigTable[config].fFormats.fSizedInternalFormat; |
| } |
| |
| bool getTexImageFormats(GrPixelConfig surfaceConfig, GrPixelConfig externalConfig, |
| GrGLenum* internalFormat, GrGLenum* externalFormat, |
| GrGLenum* externalType) const; |
| |
| bool getCompressedTexImageFormats(GrPixelConfig surfaceConfig, GrGLenum* internalFormat) const; |
| |
| |
| bool getReadPixelsFormat(GrPixelConfig surfaceConfig, GrPixelConfig externalConfig, |
| GrGLenum* externalFormat, GrGLenum* externalType) const; |
| |
| void getRenderbufferFormat(GrPixelConfig config, GrGLenum* internalFormat) const; |
| void getSizedInternalFormat(GrPixelConfig config, GrGLenum* internalFormat) const; |
| |
| /** The format to use read/write a texture as an image in a shader */ |
| GrGLenum getImageFormat(GrPixelConfig config) const { |
| return fConfigTable[config].fFormats.fSizedInternalFormat; |
| } |
| |
| /** |
| * Gets an array of legal stencil formats. These formats are not guaranteed |
| * to be supported by the driver but are legal GLenum names given the GL |
| * version and extensions supported. |
| */ |
| const SkTArray<StencilFormat, true>& stencilFormats() const { |
| return fStencilFormats; |
| } |
| |
| /** |
| * Has a stencil format index been found for the config (or we've found that no format works). |
| */ |
| bool hasStencilFormatBeenDeterminedForConfig(GrPixelConfig config) const { |
| return fConfigTable[config].fStencilFormatIndex != ConfigInfo::kUnknown_StencilIndex; |
| } |
| |
| /** |
| * Gets the stencil format index for the config. This assumes |
| * hasStencilFormatBeenDeterminedForConfig has already been checked. Returns a value < 0 if |
| * no stencil format is supported with the config. Otherwise, returned index refers to the array |
| * returned by stencilFormats(). |
| */ |
| int getStencilFormatIndexForConfig(GrPixelConfig config) const { |
| SkASSERT(this->hasStencilFormatBeenDeterminedForConfig(config)); |
| return fConfigTable[config].fStencilFormatIndex; |
| } |
| |
| /** |
| * If index is >= 0 this records an index into stencilFormats() as the best stencil format for |
| * the config. If < 0 it records that the config has no supported stencil format index. |
| */ |
| void setStencilFormatIndexForConfig(GrPixelConfig config, int index) { |
| SkASSERT(!this->hasStencilFormatBeenDeterminedForConfig(config)); |
| if (index < 0) { |
| fConfigTable[config].fStencilFormatIndex = ConfigInfo::kUnsupported_StencilFormatIndex; |
| } else { |
| fConfigTable[config].fStencilFormatIndex = index; |
| } |
| } |
| |
| /** |
| * Call to note that a color config has been verified as a valid color |
| * attachment. This may save future calls to glCheckFramebufferStatus |
| * using isConfigVerifiedColorAttachment(). |
| */ |
| void markConfigAsValidColorAttachment(GrPixelConfig config) { |
| fConfigTable[config].fVerifiedColorAttachment = true; |
| } |
| |
| /** |
| * Call to check whether a config has been verified as a valid color |
| * attachment. |
| */ |
| bool isConfigVerifiedColorAttachment(GrPixelConfig config) const { |
| return fConfigTable[config].fVerifiedColorAttachment; |
| } |
| |
| /** |
| * Reports the type of MSAA FBO support. |
| */ |
| MSFBOType msFBOType() const { return fMSFBOType; } |
| |
| /** |
| * Does the preferred MSAA FBO extension have MSAA renderbuffers? |
| */ |
| bool usesMSAARenderBuffers() const { |
| return kNone_MSFBOType != fMSFBOType && |
| kES_IMG_MsToTexture_MSFBOType != fMSFBOType && |
| kES_EXT_MsToTexture_MSFBOType != fMSFBOType && |
| kMixedSamples_MSFBOType != fMSFBOType; |
| } |
| |
| /** |
| * What functionality is supported by glBlitFramebuffer. |
| */ |
| uint32_t blitFramebufferSupportFlags() const { return fBlitFramebufferFlags; } |
| |
| /** |
| * Is the MSAA FBO extension one where the texture is multisampled when bound to an FBO and |
| * then implicitly resolved when read. |
| */ |
| bool usesImplicitMSAAResolve() const { |
| return kES_IMG_MsToTexture_MSFBOType == fMSFBOType || |
| kES_EXT_MsToTexture_MSFBOType == fMSFBOType; |
| } |
| |
| InvalidateFBType invalidateFBType() const { return fInvalidateFBType; } |
| |
| /// What type of buffer mapping is supported? |
| MapBufferType mapBufferType() const { return fMapBufferType; } |
| |
| /// What type of transfer buffer is supported? |
| TransferBufferType transferBufferType() const { return fTransferBufferType; } |
| |
| /// The maximum number of fragment uniform vectors (GLES has min. 16). |
| int maxFragmentUniformVectors() const { return fMaxFragmentUniformVectors; } |
| |
| /** |
| * Depending on the ES extensions present the BGRA external format may |
| * correspond to either a BGRA or RGBA internalFormat. On desktop GL it is |
| * RGBA. |
| */ |
| bool bgraIsInternalFormat() const; |
| |
| /// Is there support for GL_UNPACK_ROW_LENGTH |
| bool unpackRowLengthSupport() const { return fUnpackRowLengthSupport; } |
| |
| /// Is there support for GL_PACK_ROW_LENGTH |
| bool packRowLengthSupport() const { return fPackRowLengthSupport; } |
| |
| /// Is there support for GL_PACK_REVERSE_ROW_ORDER |
| bool packFlipYSupport() const { return fPackFlipYSupport; } |
| |
| /// Is there support for texture parameter GL_TEXTURE_USAGE |
| bool textureUsageSupport() const { return fTextureUsageSupport; } |
| |
| /// Is GL_ALPHA8 renderable |
| bool alpha8IsRenderable() const { return fAlpha8IsRenderable; } |
| |
| /// Is GL_ARB_IMAGING supported |
| bool imagingSupport() const { return fImagingSupport; } |
| |
| /// Is there support for Vertex Array Objects? |
| bool vertexArrayObjectSupport() const { return fVertexArrayObjectSupport; } |
| |
| /// Is there support for GL_KHR_debug? |
| bool debugSupport() const { return fDebugSupport; } |
| |
| /// Is there support for ES2 compatability? |
| bool ES2CompatibilitySupport() const { return fES2CompatibilitySupport; } |
| |
| /// Is there support for glDraw*Instanced? |
| bool drawInstancedSupport() const { return fDrawInstancedSupport; } |
| |
| /// Is there support for glDraw*Indirect? Note that the baseInstance fields of indirect draw |
| /// commands cannot be used unless we have base instance support. |
| bool drawIndirectSupport() const { return fDrawIndirectSupport; } |
| |
| /// Is there support for glMultiDraw*Indirect? Note that the baseInstance fields of indirect |
| /// draw commands cannot be used unless we have base instance support. |
| bool multiDrawIndirectSupport() const { return fMultiDrawIndirectSupport; } |
| |
| /// Is there support for glDrawRangeElements? |
| bool drawRangeElementsSupport() const { return fDrawRangeElementsSupport; } |
| |
| /// Are the baseInstance fields supported in indirect draw commands? |
| bool baseInstanceSupport() const { return fBaseInstanceSupport; } |
| |
| /// Use indices or vertices in CPU arrays rather than VBOs for dynamic content. |
| bool useNonVBOVertexAndIndexDynamicData() const { return fUseNonVBOVertexAndIndexDynamicData; } |
| |
| bool surfaceSupportsReadPixels(const GrSurface*) const override; |
| GrColorType supportedReadPixelsColorType(GrPixelConfig, GrColorType) const override; |
| |
| /// Does ReadPixels support reading readConfig pixels from a FBO that is surfaceConfig? |
| bool readPixelsSupported(GrPixelConfig surfaceConfig, |
| GrPixelConfig readConfig, |
| std::function<void (GrGLenum, GrGLint*)> getIntegerv, |
| std::function<bool ()> bindRenderTarget, |
| std::function<void ()> unbindRenderTarget) const; |
| |
| bool isCoreProfile() const { return fIsCoreProfile; } |
| |
| bool bindFragDataLocationSupport() const { return fBindFragDataLocationSupport; } |
| |
| bool bindUniformLocationSupport() const { return fBindUniformLocationSupport; } |
| |
| /// Are textures with GL_TEXTURE_RECTANGLE type supported. |
| bool rectangleTextureSupport() const { return fRectangleTextureSupport; } |
| |
| /// GL_ARB_texture_swizzle |
| bool textureSwizzleSupport() const { return fTextureSwizzleSupport; } |
| |
| bool mipMapLevelAndLodControlSupport() const { return fMipMapLevelAndLodControlSupport; } |
| |
| bool doManualMipmapping() const { return fDoManualMipmapping; } |
| |
| void onDumpJSON(SkJSONWriter*) const override; |
| |
| bool rgba8888PixelsOpsAreSlow() const { return fRGBA8888PixelsOpsAreSlow; } |
| bool partialFBOReadIsSlow() const { return fPartialFBOReadIsSlow; } |
| bool rgbaToBgraReadbackConversionsAreSlow() const { |
| return fRGBAToBGRAReadbackConversionsAreSlow; |
| } |
| |
| bool useBufferDataNullHint() const { return fUseBufferDataNullHint; } |
| |
| // Certain Intel GPUs on Mac fail to clear if the glClearColor is made up of only 1s and 0s. |
| bool clearToBoundaryValuesIsBroken() const { return fClearToBoundaryValuesIsBroken; } |
| |
| /// glClearTex(Sub)Image support |
| bool clearTextureSupport() const { return fClearTextureSupport; } |
| |
| // Adreno/MSAA drops a draw on the imagefiltersbase GM if the base vertex param to |
| // glDrawArrays is nonzero. |
| // https://bugs.chromium.org/p/skia/issues/detail?id=6650 |
| bool drawArraysBaseVertexIsBroken() const { return fDrawArraysBaseVertexIsBroken; } |
| |
| // If true then we must use an intermediate surface to perform partial updates to unorm textures |
| // that have ever been bound to a FBO. |
| bool disallowTexSubImageForUnormConfigTexturesEverBoundToFBO() const { |
| return fDisallowTexSubImageForUnormConfigTexturesEverBoundToFBO; |
| } |
| |
| // Use an intermediate surface to write pixels (full or partial overwrite) to into a texture |
| // that is bound to an FBO. |
| bool useDrawInsteadOfAllRenderTargetWrites() const { |
| return fUseDrawInsteadOfAllRenderTargetWrites; |
| } |
| |
| // At least some Adreno 3xx drivers draw lines incorrectly after drawing non-lines. Toggling |
| // face culling on and off seems to resolve this. |
| bool requiresCullFaceEnableDisableWhenDrawingLinesAfterNonLines() const { |
| return fRequiresCullFaceEnableDisableWhenDrawingLinesAfterNonLines; |
| } |
| |
| // Some Adreno drivers refuse to ReadPixels from an MSAA buffer that has stencil attached. |
| bool detachStencilFromMSAABuffersBeforeReadPixels() const { |
| return fDetachStencilFromMSAABuffersBeforeReadPixels; |
| } |
| |
| // Older Android versions seem to have an issue with setting GL_TEXTURE_BASE_LEVEL or |
| // GL_TEXTURE_MAX_LEVEL for GL_TEXTURE_EXTERNAL_OES textures. |
| bool dontSetBaseOrMaxLevelForExternalTextures() const { |
| return fDontSetBaseOrMaxLevelForExternalTextures; |
| } |
| |
| // Returns the observed maximum number of instances the driver can handle in a single draw call |
| // without crashing, or 'pendingInstanceCount' if this workaround is not necessary. |
| // NOTE: the return value may be larger than pendingInstanceCount. |
| int maxInstancesPerDrawWithoutCrashing(int pendingInstanceCount) const { |
| return (fMaxInstancesPerDrawWithoutCrashing) |
| ? fMaxInstancesPerDrawWithoutCrashing : pendingInstanceCount; |
| } |
| |
| bool canCopyTexSubImage(GrPixelConfig dstConfig, bool dstHasMSAARenderBuffer, |
| bool dstIsTextureable, bool dstIsGLTexture2D, |
| GrSurfaceOrigin dstOrigin, |
| GrPixelConfig srcConfig, bool srcHasMSAARenderBuffer, |
| bool srcIsTextureable, bool srcIsGLTexture2D, |
| GrSurfaceOrigin srcOrigin) const; |
| bool canCopyAsBlit(GrPixelConfig dstConfig, int dstSampleCnt, |
| bool dstIsTextureable, bool dstIsGLTexture2D, |
| GrSurfaceOrigin dstOrigin, |
| GrPixelConfig srcConfig, int srcSampleCnt, |
| bool srcIsTextureable, bool srcIsGLTexture2D, |
| GrSurfaceOrigin srcOrigin, const SkRect& srcBounds, |
| const SkIRect& srcRect, const SkIPoint& dstPoint) const; |
| bool canCopyAsDraw(GrPixelConfig dstConfig, bool srcIsTextureable) const; |
| |
| bool initDescForDstCopy(const GrRenderTargetProxy* src, GrSurfaceDesc* desc, GrSurfaceOrigin*, |
| bool* rectsMustMatch, bool* disallowSubrect) const override; |
| |
| bool programBinarySupport() const { return fProgramBinarySupport; } |
| |
| bool samplerObjectSupport() const { return fSamplerObjectSupport; } |
| |
| bool fbFetchRequiresEnablePerSample() const { return fFBFetchRequiresEnablePerSample; } |
| |
| GrPixelConfig validateBackendRenderTarget(const GrBackendRenderTarget&, |
| SkColorType) const override; |
| |
| GrPixelConfig getConfigFromBackendFormat(const GrBackendFormat&, SkColorType) const override; |
| GrPixelConfig getYUVAConfigFromBackendFormat(const GrBackendFormat&) const override; |
| |
| GrBackendFormat getBackendFormatFromGrColorType(GrColorType ct, |
| GrSRGBEncoded srgbEncoded) const override; |
| |
| #if GR_TEST_UTILS |
| GrGLStandard standard() const { return fStandard; } |
| #endif |
| |
| private: |
| enum ExternalFormatUsage { |
| kTexImage_ExternalFormatUsage, |
| kReadPixels_ExternalFormatUsage, |
| |
| kLast_ExternalFormatUsage = kReadPixels_ExternalFormatUsage |
| }; |
| static const int kExternalFormatUsageCnt = kLast_ExternalFormatUsage + 1; |
| bool getExternalFormat(GrPixelConfig surfaceConfig, GrPixelConfig memoryConfig, |
| ExternalFormatUsage usage, GrGLenum* externalFormat, |
| GrGLenum* externalType) const; |
| |
| void init(const GrContextOptions&, const GrGLContextInfo&, const GrGLInterface*); |
| void initGLSL(const GrGLContextInfo&, const GrGLInterface*); |
| bool hasPathRenderingSupport(const GrGLContextInfo&, const GrGLInterface*); |
| |
| void applyDriverCorrectnessWorkarounds(const GrGLContextInfo&, const GrContextOptions&, |
| GrShaderCaps*); |
| |
| void onApplyOptionsOverrides(const GrContextOptions& options) override; |
| |
| bool onIsWindowRectanglesSupportedForRT(const GrBackendRenderTarget&) const override; |
| |
| void initFSAASupport(const GrContextOptions& contextOptions, const GrGLContextInfo&, |
| const GrGLInterface*); |
| void initBlendEqationSupport(const GrGLContextInfo&); |
| void initStencilSupport(const GrGLContextInfo&); |
| // This must be called after initFSAASupport(). |
| void initConfigTable(const GrContextOptions&, const GrGLContextInfo&, const GrGLInterface*, |
| GrShaderCaps*); |
| bool onSurfaceSupportsWritePixels(const GrSurface*) const override; |
| bool onCanCopySurface(const GrSurfaceProxy* dst, const GrSurfaceProxy* src, |
| const SkIRect& srcRect, const SkIPoint& dstPoint) const override; |
| size_t onTransferFromOffsetAlignment(GrColorType bufferColorType) const override; |
| |
| GrGLStandard fStandard; |
| |
| SkTArray<StencilFormat, true> fStencilFormats; |
| |
| int fMaxFragmentUniformVectors; |
| |
| MSFBOType fMSFBOType; |
| InvalidateFBType fInvalidateFBType; |
| MapBufferType fMapBufferType; |
| TransferBufferType fTransferBufferType; |
| |
| bool fUnpackRowLengthSupport : 1; |
| bool fPackRowLengthSupport : 1; |
| bool fPackFlipYSupport : 1; |
| bool fTextureUsageSupport : 1; |
| bool fAlpha8IsRenderable: 1; |
| bool fImagingSupport : 1; |
| bool fVertexArrayObjectSupport : 1; |
| bool fDebugSupport : 1; |
| bool fES2CompatibilitySupport : 1; |
| bool fDrawInstancedSupport : 1; |
| bool fDrawIndirectSupport : 1; |
| bool fDrawRangeElementsSupport : 1; |
| bool fMultiDrawIndirectSupport : 1; |
| bool fBaseInstanceSupport : 1; |
| bool fUseNonVBOVertexAndIndexDynamicData : 1; |
| bool fIsCoreProfile : 1; |
| bool fBindFragDataLocationSupport : 1; |
| bool fRGBA8888PixelsOpsAreSlow : 1; |
| bool fPartialFBOReadIsSlow : 1; |
| bool fBindUniformLocationSupport : 1; |
| bool fRectangleTextureSupport : 1; |
| bool fTextureSwizzleSupport : 1; |
| bool fMipMapLevelAndLodControlSupport : 1; |
| bool fRGBAToBGRAReadbackConversionsAreSlow : 1; |
| bool fUseBufferDataNullHint : 1; |
| bool fClearTextureSupport : 1; |
| bool fProgramBinarySupport : 1; |
| bool fSamplerObjectSupport : 1; |
| bool fFBFetchRequiresEnablePerSample : 1; |
| |
| // Driver workarounds |
| bool fDoManualMipmapping : 1; |
| bool fClearToBoundaryValuesIsBroken : 1; |
| bool fDrawArraysBaseVertexIsBroken : 1; |
| bool fDisallowTexSubImageForUnormConfigTexturesEverBoundToFBO : 1; |
| bool fUseDrawInsteadOfAllRenderTargetWrites : 1; |
| bool fRequiresCullFaceEnableDisableWhenDrawingLinesAfterNonLines : 1; |
| bool fDetachStencilFromMSAABuffersBeforeReadPixels : 1; |
| bool fDontSetBaseOrMaxLevelForExternalTextures : 1; |
| int fMaxInstancesPerDrawWithoutCrashing; |
| |
| uint32_t fBlitFramebufferFlags; |
| |
| /** Number type of the components (with out considering number of bits.) */ |
| enum FormatType { |
| kNormalizedFixedPoint_FormatType, |
| kFloat_FormatType, |
| }; |
| |
| struct ReadPixelsFormat { |
| ReadPixelsFormat() : fFormat(0), fType(0) {} |
| GrGLenum fFormat; |
| GrGLenum fType; |
| }; |
| |
| struct ConfigFormats { |
| ConfigFormats() { |
| // Inits to known bad GL enum values. |
| memset(this, 0xAB, sizeof(ConfigFormats)); |
| } |
| GrGLenum fBaseInternalFormat; |
| GrGLenum fSizedInternalFormat; |
| |
| /** The external format and type are to be used when uploading/downloading data using this |
| config where both the CPU data and GrSurface are the same config. To get the external |
| format and type when converting between configs while copying to/from memory use |
| getExternalFormat(). |
| The kTexImage external format is usually the same as kOther except for kSRGBA on some |
| GL contexts. */ |
| GrGLenum fExternalFormat[kExternalFormatUsageCnt]; |
| GrGLenum fExternalType; |
| |
| // Either the base or sized internal format depending on the GL and config. |
| GrGLenum fInternalFormatTexImage; |
| GrGLenum fInternalFormatRenderbuffer; |
| }; |
| |
| struct ConfigInfo { |
| ConfigInfo() : fStencilFormatIndex(kUnknown_StencilIndex), fFlags(0) {} |
| |
| ConfigFormats fFormats; |
| |
| FormatType fFormatType; |
| |
| // On ES contexts there are restrictions on type type/format that may be used for |
| // ReadPixels. One is implicitly specified by the current FBO's format. The other is |
| // queryable. This stores the queried option (lazily). |
| ReadPixelsFormat fSecondReadPixelsFormat; |
| |
| enum { |
| // This indicates that a stencil format has not yet been determined for the config. |
| kUnknown_StencilIndex = -1, |
| // This indicates that there is no supported stencil format for the config. |
| kUnsupported_StencilFormatIndex = -2 |
| }; |
| |
| // Index fStencilFormats. |
| int fStencilFormatIndex; |
| |
| SkTDArray<int> fColorSampleCounts; |
| |
| enum { |
| kTextureable_Flag = 0x1, |
| kRenderable_Flag = 0x2, |
| kRenderableWithMSAA_Flag = 0x4, |
| /** kFBOColorAttachment means that even if the config cannot be a GrRenderTarget, we can |
| still attach it to a FBO for blitting or reading pixels. */ |
| kFBOColorAttachment_Flag = 0x8, |
| kCanUseTexStorage_Flag = 0x10, |
| }; |
| uint32_t fFlags; |
| |
| // verification of color attachment validity is done while flushing. Although only ever |
| // used in the (sole) rendering thread it can cause races if it is glommed into fFlags. |
| bool fVerifiedColorAttachment = false; |
| |
| GrSwizzle fSwizzle; |
| }; |
| |
| ConfigInfo fConfigTable[kGrPixelConfigCnt]; |
| |
| typedef GrCaps INHERITED; |
| }; |
| |
| #endif |
