| /* |
| * 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 "GrCaps.h" |
| #include "GrMtlStencilAttachment.h" |
| #include "SkTDArray.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 isConfigTexturable(GrPixelConfig config) const override { |
| return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kTextureable_Flag); |
| } |
| |
| int getRenderTargetSampleCount(int requestedCount, GrPixelConfig) const override; |
| int maxRenderTargetSampleCount(GrPixelConfig) const override; |
| |
| bool surfaceSupportsWritePixels(const GrSurface*) const override { return true; } |
| bool surfaceSupportsReadPixels(const GrSurface*) const override { return true; } |
| |
| bool isConfigCopyable(GrPixelConfig config) const override { |
| return true; |
| } |
| |
| /** |
| * Returns both a supported and most prefered stencil format to use in draws. |
| */ |
| const StencilFormat& preferredStencilFormat() const { |
| return fPreferredStencilFormat; |
| } |
| |
| bool canCopyAsBlit(GrPixelConfig dstConfig, int dstSampleCount, GrSurfaceOrigin dstOrigin, |
| GrPixelConfig srcConfig, int srcSampleCount, GrSurfaceOrigin srcOrigin, |
| const SkIRect& srcRect, const SkIPoint& dstPoint, |
| bool areDstSrcSameObj) const; |
| |
| bool canCopyAsDraw(GrPixelConfig dstConfig, bool dstIsRenderable, |
| GrPixelConfig srcConfig, bool srcIsTextureable) const; |
| |
| bool canCopyAsDrawThenBlit(GrPixelConfig dstConfig, GrPixelConfig srcConfig, |
| bool srcIsTextureable) const; |
| |
| bool canCopySurface(const GrSurfaceProxy* dst, const GrSurfaceProxy* src, |
| const SkIRect& srcRect, const SkIPoint& dstPoint) const override; |
| |
| bool initDescForDstCopy(const GrRenderTargetProxy* src, GrSurfaceDesc* desc, GrSurfaceOrigin*, |
| bool* rectsMustMatch, bool* disallowSubrect) const override { |
| return false; |
| } |
| |
| bool validateBackendTexture(const GrBackendTexture&, SkColorType, |
| GrPixelConfig*) const override { |
| return false; |
| } |
| bool validateBackendRenderTarget(const GrBackendRenderTarget&, SkColorType, |
| GrPixelConfig*) const override { |
| return false; |
| } |
| |
| bool getConfigFromBackendFormat(const GrBackendFormat&, SkColorType, |
| GrPixelConfig*) const override { |
| return false; |
| } |
| |
| bool getYUVAConfigFromBackendFormat(const GrBackendFormat&, |
| GrPixelConfig*) const override { |
| return false; |
| } |
| |
| bool performPartialClearsAsDraws() const override { |
| return true; |
| } |
| |
| private: |
| void initFeatureSet(MTLFeatureSet featureSet); |
| |
| void initStencilFormat(const id<MTLDevice> device); |
| |
| void initGrCaps(const id<MTLDevice> device); |
| void initShaderCaps(); |
| |
| #ifdef GR_TEST_UTILS |
| GrBackendFormat onCreateFormatFromBackendTexture(const GrBackendTexture&) const override; |
| #endif |
| |
| void initConfigTable(); |
| |
| struct ConfigInfo { |
| ConfigInfo() : fFlags(0) {} |
| |
| enum { |
| kTextureable_Flag = 0x1, |
| kRenderable_Flag = 0x2, // Color attachment and blendable |
| kMSAA_Flag = 0x4, |
| kResolve_Flag = 0x8, |
| }; |
| // TODO: Put kMSAA_Flag back when MSAA is implemented |
| static const uint16_t kAllFlags = kTextureable_Flag | kRenderable_Flag | |
| /*kMSAA_Flag |*/ kResolve_Flag; |
| |
| uint16_t fFlags; |
| }; |
| ConfigInfo fConfigTable[kGrPixelConfigCnt]; |
| |
| 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 |