1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrMtlCaps_DEFINED 9 #define GrMtlCaps_DEFINED 10 11 #include "GrCaps.h" 12 13 #include "SkTDArray.h" 14 15 #import <Metal/Metal.h> 16 17 class GrShaderCaps; 18 19 /** 20 * Stores some capabilities of a Mtl backend. 21 */ 22 class GrMtlCaps : public GrCaps { 23 public: 24 GrMtlCaps(const GrContextOptions& contextOptions, id<MTLDevice> device, 25 MTLFeatureSet featureSet); 26 isConfigTexturable(GrPixelConfig config)27 bool isConfigTexturable(GrPixelConfig config) const override { 28 return SkToBool(fConfigTable[config].fFlags & ConfigInfo::kTextureable_Flag); 29 } 30 31 int getRenderTargetSampleCount(int requestedCount, GrPixelConfig) const override; maxRenderTargetSampleCount(GrPixelConfig)32 int maxRenderTargetSampleCount(GrPixelConfig) const override; 33 34 bool surfaceSupportsWritePixels(const GrSurface* surface) const override { return true; } 35 isConfigCopyable(GrPixelConfig config)36 bool isConfigCopyable(GrPixelConfig config) const override { 37 return true; 38 } 39 40 #if 0 41 /** 42 * Returns both a supported and most prefered stencil format to use in draws. 43 */ 44 const StencilFormat& preferedStencilFormat() const { 45 return fPreferedStencilFormat; 46 } 47 #endif initDescForDstCopy(const GrRenderTargetProxy * src,GrSurfaceDesc * desc,bool * rectsMustMatch,bool * disallowSubrect)48 bool initDescForDstCopy(const GrRenderTargetProxy* src, GrSurfaceDesc* desc, 49 bool* rectsMustMatch, bool* disallowSubrect) const override { 50 return false; 51 } 52 validateBackendTexture(const GrBackendTexture &,SkColorType,GrPixelConfig *)53 bool validateBackendTexture(const GrBackendTexture&, SkColorType, 54 GrPixelConfig*) const override { 55 return false; 56 } validateBackendRenderTarget(const GrBackendRenderTarget &,SkColorType,GrPixelConfig *)57 bool validateBackendRenderTarget(const GrBackendRenderTarget&, SkColorType, 58 GrPixelConfig*) const override { 59 return false; 60 } 61 getConfigFromBackendFormat(const GrBackendFormat &,SkColorType,GrPixelConfig *)62 bool getConfigFromBackendFormat(const GrBackendFormat&, SkColorType, 63 GrPixelConfig*) const override { 64 return false; 65 } 66 67 private: 68 void initFeatureSet(MTLFeatureSet featureSet); 69 70 void initGrCaps(const id<MTLDevice> device); 71 void initShaderCaps(); 72 void initConfigTable(); 73 74 struct ConfigInfo { ConfigInfoConfigInfo75 ConfigInfo() : fFlags(0) {} 76 77 enum { 78 kTextureable_Flag = 0x1, 79 kRenderable_Flag = 0x2, // Color attachment and blendable 80 kMSAA_Flag = 0x4, 81 kResolve_Flag = 0x8, 82 }; 83 static const uint16_t kAllFlags = kTextureable_Flag | kRenderable_Flag | 84 kMSAA_Flag | kResolve_Flag; 85 86 uint16_t fFlags; 87 }; 88 ConfigInfo fConfigTable[kGrPixelConfigCnt]; 89 90 enum class Platform { 91 kMac, 92 kIOS 93 }; isMac()94 bool isMac() { return Platform::kMac == fPlatform; } isIOS()95 bool isIOS() { return Platform::kIOS == fPlatform; } 96 97 Platform fPlatform; 98 int fFamilyGroup; 99 int fVersion; 100 101 SkTDArray<int> fSampleCounts; 102 103 typedef GrCaps INHERITED; 104 }; 105 106 #endif 107