egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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 | #include "GrPorterDuffXferProcessor.h" |
| 9 | |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 10 | #include "GrDrawState.h" |
| 11 | #include "GrInvariantOutput.h" |
| 12 | #include "GrProcessor.h" |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 13 | #include "GrTypes.h" |
| 14 | #include "GrXferProcessor.h" |
| 15 | #include "gl/GrGLProcessor.h" |
| 16 | #include "gl/builders/GrGLFragmentShaderBuilder.h" |
| 17 | #include "gl/builders/GrGLProgramBuilder.h" |
| 18 | |
| 19 | class GrGLPorterDuffXferProcessor : public GrGLXferProcessor { |
| 20 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 21 | GrGLPorterDuffXferProcessor(const GrProcessor&) {} |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 22 | |
| 23 | virtual ~GrGLPorterDuffXferProcessor() {} |
| 24 | |
| 25 | virtual void emitCode(GrGLFPBuilder* builder, |
| 26 | const GrFragmentProcessor& fp, |
| 27 | const char* outputColor, |
| 28 | const char* inputColor, |
| 29 | const TransformedCoordsArray& coords, |
| 30 | const TextureSamplerArray& samplers) SK_OVERRIDE { |
| 31 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 32 | fsBuilder->codeAppendf("%s = %s;", outputColor, inputColor); |
| 33 | } |
| 34 | |
| 35 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {}; |
| 36 | |
| 37 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b) {}; |
| 38 | |
| 39 | private: |
| 40 | typedef GrGLXferProcessor INHERITED; |
| 41 | }; |
| 42 | |
| 43 | /////////////////////////////////////////////////////////////////////////////// |
| 44 | |
| 45 | GrPorterDuffXferProcessor::GrPorterDuffXferProcessor(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 46 | : fSrcBlend(srcBlend), fDstBlend(dstBlend) { |
| 47 | this->initClassID<GrPorterDuffXferProcessor>(); |
| 48 | } |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 49 | |
| 50 | GrPorterDuffXferProcessor::~GrPorterDuffXferProcessor() { |
| 51 | } |
| 52 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 53 | void GrPorterDuffXferProcessor::getGLProcessorKey(const GrGLCaps& caps, |
| 54 | GrProcessorKeyBuilder* b) const { |
| 55 | GrGLPorterDuffXferProcessor::GenKey(*this, caps, b); |
| 56 | } |
| 57 | |
| 58 | GrGLFragmentProcessor* GrPorterDuffXferProcessor::createGLInstance() const { |
| 59 | return SkNEW_ARGS(GrGLPorterDuffXferProcessor, (*this)); |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | void GrPorterDuffXferProcessor::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
| 63 | inout->setToUnknown(GrInvariantOutput::kWillNot_ReadInput); |
| 64 | } |
| 65 | |
| 66 | /////////////////////////////////////////////////////////////////////////////// |
| 67 | |
egdaniel | c016fb8 | 2014-12-03 11:41:54 -0800 | [diff] [blame] | 68 | GrXPFactory* GrPorterDuffXPFactory::Create(SkXfermode::Mode mode) { |
| 69 | switch (mode) { |
| 70 | case SkXfermode::kClear_Mode: { |
| 71 | static GrPorterDuffXPFactory gClearPDXPF(kZero_GrBlendCoeff, kZero_GrBlendCoeff); |
| 72 | return SkRef(&gClearPDXPF); |
| 73 | break; |
| 74 | } |
| 75 | case SkXfermode::kSrc_Mode: { |
| 76 | static GrPorterDuffXPFactory gSrcPDXPF(kOne_GrBlendCoeff, kZero_GrBlendCoeff); |
| 77 | return SkRef(&gSrcPDXPF); |
| 78 | break; |
| 79 | } |
| 80 | case SkXfermode::kDst_Mode: { |
| 81 | static GrPorterDuffXPFactory gDstPDXPF(kZero_GrBlendCoeff, kOne_GrBlendCoeff); |
| 82 | return SkRef(&gDstPDXPF); |
| 83 | break; |
| 84 | } |
| 85 | case SkXfermode::kSrcOver_Mode: { |
| 86 | static GrPorterDuffXPFactory gSrcOverPDXPF(kOne_GrBlendCoeff, kISA_GrBlendCoeff); |
| 87 | return SkRef(&gSrcOverPDXPF); |
| 88 | break; |
| 89 | } |
| 90 | case SkXfermode::kDstOver_Mode: { |
| 91 | static GrPorterDuffXPFactory gDstOverPDXPF(kIDA_GrBlendCoeff, kOne_GrBlendCoeff); |
| 92 | return SkRef(&gDstOverPDXPF); |
| 93 | break; |
| 94 | } |
| 95 | case SkXfermode::kSrcIn_Mode: { |
| 96 | static GrPorterDuffXPFactory gSrcInPDXPF(kDA_GrBlendCoeff, kZero_GrBlendCoeff); |
| 97 | return SkRef(&gSrcInPDXPF); |
| 98 | break; |
| 99 | } |
| 100 | case SkXfermode::kDstIn_Mode: { |
| 101 | static GrPorterDuffXPFactory gDstInPDXPF(kZero_GrBlendCoeff, kSA_GrBlendCoeff); |
| 102 | return SkRef(&gDstInPDXPF); |
| 103 | break; |
| 104 | } |
| 105 | case SkXfermode::kSrcOut_Mode: { |
| 106 | static GrPorterDuffXPFactory gSrcOutPDXPF(kIDA_GrBlendCoeff, kZero_GrBlendCoeff); |
| 107 | return SkRef(&gSrcOutPDXPF); |
| 108 | break; |
| 109 | } |
| 110 | case SkXfermode::kDstOut_Mode: { |
| 111 | static GrPorterDuffXPFactory gDstOutPDXPF(kZero_GrBlendCoeff, kISA_GrBlendCoeff); |
| 112 | return SkRef(&gDstOutPDXPF); |
| 113 | break; |
| 114 | } |
| 115 | case SkXfermode::kSrcATop_Mode: { |
| 116 | static GrPorterDuffXPFactory gSrcATopPDXPF(kDA_GrBlendCoeff, kISA_GrBlendCoeff); |
| 117 | return SkRef(&gSrcATopPDXPF); |
| 118 | break; |
| 119 | } |
| 120 | case SkXfermode::kDstATop_Mode: { |
| 121 | static GrPorterDuffXPFactory gDstATopPDXPF(kIDA_GrBlendCoeff, kSA_GrBlendCoeff); |
| 122 | return SkRef(&gDstATopPDXPF); |
| 123 | break; |
| 124 | } |
| 125 | case SkXfermode::kXor_Mode: { |
| 126 | static GrPorterDuffXPFactory gXorPDXPF(kIDA_GrBlendCoeff, kISA_GrBlendCoeff); |
| 127 | return SkRef(&gXorPDXPF); |
| 128 | break; |
| 129 | } |
| 130 | case SkXfermode::kPlus_Mode: { |
| 131 | static GrPorterDuffXPFactory gPlusPDXPF(kOne_GrBlendCoeff, kOne_GrBlendCoeff); |
| 132 | return SkRef(&gPlusPDXPF); |
| 133 | break; |
| 134 | } |
| 135 | case SkXfermode::kModulate_Mode: { |
| 136 | static GrPorterDuffXPFactory gModulatePDXPF(kZero_GrBlendCoeff, kSC_GrBlendCoeff); |
| 137 | return SkRef(&gModulatePDXPF); |
| 138 | break; |
| 139 | } |
| 140 | case SkXfermode::kScreen_Mode: { |
| 141 | static GrPorterDuffXPFactory gScreenPDXPF(kOne_GrBlendCoeff, kISC_GrBlendCoeff); |
| 142 | return SkRef(&gScreenPDXPF); |
| 143 | break; |
| 144 | } |
| 145 | default: |
| 146 | return NULL; |
| 147 | } |
| 148 | } |
| 149 | |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 150 | const GrXferProcessor* GrPorterDuffXPFactory::createXferProcessor() const { |
| 151 | return GrPorterDuffXferProcessor::Create(fSrc, fDst); |
| 152 | } |
| 153 | |
| 154 | bool GrPorterDuffXPFactory::supportsRGBCoverage(GrColor /*knownColor*/, |
| 155 | uint32_t knownColorFlags) const { |
| 156 | if (kOne_GrBlendCoeff == fSrc && kISA_GrBlendCoeff == fDst && |
| 157 | kRGBA_GrColorComponentFlags == knownColorFlags) { |
| 158 | return true; |
| 159 | } |
| 160 | return false; |
| 161 | } |
| 162 | |