| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrMtlCaps_DEFINED |
| #define GrMtlCaps_DEFINED |
| |
| #include "include/private/SkTDArray.h" |
| #include "src/gpu/GrCaps.h" |
| #include "src/gpu/mtl/GrMtlStencilAttachment.h" |
| |
| #import <Metal/Metal.h> |
| |
| class GrShaderCaps; |
| |
| /** |
| * Stores some capabilities of a Mtl backend. |
| */ |
| class GrMtlCaps : public GrCaps { |
| public: |
| typedef GrMtlStencilAttachment::Format StencilFormat; |
| |
| GrMtlCaps(const GrContextOptions& contextOptions, id<MTLDevice> device, |
| MTLFeatureSet featureSet); |
| |
| bool isFormatSRGB(const GrBackendFormat&) const override; |
| SkImage::CompressionType compressionType(const GrBackendFormat&) const override; |
| |
| bool isFormatTexturableAndUploadable(GrColorType, const GrBackendFormat&) const override; |
| bool isFormatTexturable(const GrBackendFormat&) const override; |
| bool isFormatTexturable(MTLPixelFormat) const; |
| |
| bool isFormatCopyable(const GrBackendFormat&) const override { return true; } |
| |
| bool isFormatAsColorTypeRenderable(GrColorType ct, const GrBackendFormat& format, |
| int sampleCount = 1) const override; |
| bool isFormatRenderable(const GrBackendFormat& format, int sampleCount) const override; |
| bool isFormatRenderable(MTLPixelFormat, int sampleCount) const; |
| |
| int getRenderTargetSampleCount(int requestedCount, const GrBackendFormat&) const override; |
| int getRenderTargetSampleCount(int requestedCount, MTLPixelFormat) const; |
| |
| int maxRenderTargetSampleCount(const GrBackendFormat&) const override; |
| int maxRenderTargetSampleCount(MTLPixelFormat) const; |
| |
| size_t bytesPerPixel(const GrBackendFormat&) const override; |
| size_t bytesPerPixel(MTLPixelFormat) const; |
| |
| SupportedWrite supportedWritePixelsColorType(GrColorType surfaceColorType, |
| const GrBackendFormat& surfaceFormat, |
| GrColorType srcColorType) const override; |
| |
| SurfaceReadPixelsSupport surfaceSupportsReadPixels(const GrSurface*) const override { |
| return SurfaceReadPixelsSupport::kSupported; |
| } |
| |
| /** |
| * Returns both a supported and most prefered stencil format to use in draws. |
| */ |
| const StencilFormat& preferredStencilFormat() const { |
| return fPreferredStencilFormat; |
| } |
| |
| bool canCopyAsBlit(GrSurface* dst, int dstSampleCount, GrSurface* src, int srcSampleCount, |
| const SkIRect& srcRect, const SkIPoint& dstPoint, |
| bool areDstSrcSameObj) const; |
| |
| bool canCopyAsBlit(MTLPixelFormat dstFormat, int dstSampleCount, |
| MTLPixelFormat srcFormat, int srcSampleCount, |
| const SkIRect& srcRect, const SkIPoint& dstPoint, |
| bool areDstSrcSameObj) const; |
| |
| bool canCopyAsResolve(GrSurface* dst, int dstSampleCount, GrSurface* src, int srcSampleCount, |
| const SkIRect& srcRect, const SkIPoint& dstPoint) const; |
| |
| GrColorType getYUVAColorTypeFromBackendFormat(const GrBackendFormat&, |
| bool isAlphaChannel) const override; |
| |
| GrBackendFormat getBackendFormatFromCompressionType(SkImage::CompressionType) const override; |
| |
| MTLPixelFormat getFormatFromColorType(GrColorType colorType) const { |
| int idx = static_cast<int>(colorType); |
| return fColorTypeToFormatTable[idx]; |
| } |
| |
| GrSwizzle getReadSwizzle(const GrBackendFormat&, GrColorType) const override; |
| GrSwizzle getOutputSwizzle(const GrBackendFormat&, GrColorType) const override; |
| |
| GrProgramDesc makeDesc(const GrRenderTarget*, const GrProgramInfo&) const override; |
| |
| #if GR_TEST_UTILS |
| std::vector<TestFormatColorTypeCombination> getTestingCombinations() const override; |
| #endif |
| |
| private: |
| void initFeatureSet(MTLFeatureSet featureSet); |
| |
| void initStencilFormat(const id<MTLDevice> device); |
| |
| void initGrCaps(const id<MTLDevice> device); |
| void initShaderCaps(); |
| |
| void initFormatTable(); |
| |
| bool onSurfaceSupportsWritePixels(const GrSurface*) const override; |
| bool onCanCopySurface(const GrSurfaceProxy* dst, const GrSurfaceProxy* src, |
| const SkIRect& srcRect, const SkIPoint& dstPoint) const override; |
| GrBackendFormat onGetDefaultBackendFormat(GrColorType, GrRenderable) const override; |
| GrPixelConfig onGetConfigFromBackendFormat(const GrBackendFormat&, GrColorType) const override; |
| GrPixelConfig onGetConfigFromCompressedBackendFormat(const GrBackendFormat&) const override; |
| bool onAreColorTypeAndFormatCompatible(GrColorType, const GrBackendFormat&) const override; |
| |
| SupportedRead onSupportedReadPixelsColorType(GrColorType, const GrBackendFormat&, |
| GrColorType) const override; |
| |
| // ColorTypeInfo for a specific format |
| struct ColorTypeInfo { |
| GrColorType fColorType = GrColorType::kUnknown; |
| enum { |
| kUploadData_Flag = 0x1, |
| // Does Ganesh itself support rendering to this colorType & format pair. Renderability |
| // still additionally depends on if the format itself is renderable. |
| kRenderable_Flag = 0x2, |
| }; |
| uint32_t fFlags = 0; |
| |
| GrSwizzle fReadSwizzle; |
| GrSwizzle fOutputSwizzle; |
| }; |
| |
| struct FormatInfo { |
| uint32_t colorTypeFlags(GrColorType colorType) const { |
| for (int i = 0; i < fColorTypeInfoCount; ++i) { |
| if (fColorTypeInfos[i].fColorType == colorType) { |
| return fColorTypeInfos[i].fFlags; |
| } |
| } |
| return 0; |
| } |
| |
| enum { |
| kTexturable_Flag = 0x1, |
| kRenderable_Flag = 0x2, // Color attachment and blendable |
| kMSAA_Flag = 0x4, |
| kResolve_Flag = 0x8, |
| }; |
| static const uint16_t kAllFlags = kTexturable_Flag | kRenderable_Flag | |
| kMSAA_Flag | kResolve_Flag; |
| |
| uint16_t fFlags = 0; |
| |
| // This value is only valid for regular formats. Compressed formats will be 0. |
| size_t fBytesPerPixel = 0; |
| |
| std::unique_ptr<ColorTypeInfo[]> fColorTypeInfos; |
| int fColorTypeInfoCount = 0; |
| }; |
| #ifdef SK_BUILD_FOR_IOS |
| static constexpr size_t kNumMtlFormats = 17; |
| #else |
| static constexpr size_t kNumMtlFormats = 14; |
| #endif |
| static size_t GetFormatIndex(MTLPixelFormat); |
| FormatInfo fFormatTable[kNumMtlFormats]; |
| |
| const FormatInfo& getFormatInfo(const MTLPixelFormat pixelFormat) const { |
| size_t index = GetFormatIndex(pixelFormat); |
| return fFormatTable[index]; |
| } |
| |
| MTLPixelFormat fColorTypeToFormatTable[kGrColorTypeCnt]; |
| void setColorType(GrColorType, std::initializer_list<MTLPixelFormat> formats); |
| |
| enum class Platform { |
| kMac, |
| kIOS |
| }; |
| bool isMac() { return Platform::kMac == fPlatform; } |
| bool isIOS() { return Platform::kIOS == fPlatform; } |
| |
| Platform fPlatform; |
| int fFamilyGroup; |
| int fVersion; |
| |
| SkTDArray<int> fSampleCounts; |
| |
| StencilFormat fPreferredStencilFormat; |
| |
| typedef GrCaps INHERITED; |
| }; |
| |
| #endif |