egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2014 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
| 9 | #include "effects/GrCoverageSetOpXP.h" |
| 10 | #include "GrColor.h" |
| 11 | #include "GrDrawTargetCaps.h" |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 12 | #include "GrProcessor.h" |
| 13 | #include "GrProcOptInfo.h" |
| 14 | #include "gl/GrGLXferProcessor.h" |
| 15 | #include "gl/builders/GrGLFragmentShaderBuilder.h" |
| 16 | #include "gl/builders/GrGLProgramBuilder.h" |
| 17 | |
| 18 | class GrGLCoverageSetOpXP : public GrGLXferProcessor { |
| 19 | public: |
| 20 | GrGLCoverageSetOpXP(const GrProcessor&) {} |
| 21 | |
| 22 | ~GrGLCoverageSetOpXP() SK_OVERRIDE {} |
| 23 | |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame^] | 24 | static void GenKey(const GrProcessor& processor, const GrGLCaps& caps, |
| 25 | GrProcessorKeyBuilder* b) { |
| 26 | const GrCoverageSetOpXP& xp = processor.cast<GrCoverageSetOpXP>(); |
| 27 | uint32_t key = xp.invertCoverage() ? 0x0 : 0x1; |
| 28 | b->add32(key); |
| 29 | }; |
| 30 | |
| 31 | private: |
| 32 | void onEmitCode(const EmitArgs& args) SK_OVERRIDE { |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 33 | const GrCoverageSetOpXP& xp = args.fXP.cast<GrCoverageSetOpXP>(); |
| 34 | GrGLFPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
| 35 | |
| 36 | if (xp.invertCoverage()) { |
| 37 | fsBuilder->codeAppendf("%s = 1.0 - %s;", args.fOutputPrimary, args.fInputCoverage); |
| 38 | } else { |
| 39 | fsBuilder->codeAppendf("%s = %s;", args.fOutputPrimary, args.fInputCoverage); |
| 40 | } |
| 41 | } |
| 42 | |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame^] | 43 | void onSetData(const GrGLProgramDataManager&, const GrXferProcessor&) SK_OVERRIDE {}; |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 44 | |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 45 | typedef GrGLXferProcessor INHERITED; |
| 46 | }; |
| 47 | |
| 48 | /////////////////////////////////////////////////////////////////////////////// |
| 49 | |
| 50 | GrCoverageSetOpXP::GrCoverageSetOpXP(SkRegion::Op regionOp, bool invertCoverage) |
| 51 | : fRegionOp(regionOp) |
| 52 | , fInvertCoverage(invertCoverage) { |
| 53 | this->initClassID<GrCoverageSetOpXP>(); |
| 54 | } |
| 55 | |
| 56 | GrCoverageSetOpXP::~GrCoverageSetOpXP() { |
| 57 | } |
| 58 | |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame^] | 59 | void GrCoverageSetOpXP::onGetGLProcessorKey(const GrGLCaps& caps, GrProcessorKeyBuilder* b) const { |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 60 | GrGLCoverageSetOpXP::GenKey(*this, caps, b); |
| 61 | } |
| 62 | |
| 63 | GrGLXferProcessor* GrCoverageSetOpXP::createGLInstance() const { |
| 64 | return SkNEW_ARGS(GrGLCoverageSetOpXP, (*this)); |
| 65 | } |
| 66 | |
| 67 | GrXferProcessor::OptFlags |
| 68 | GrCoverageSetOpXP::getOptimizations(const GrProcOptInfo& colorPOI, |
| 69 | const GrProcOptInfo& coveragePOI, |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 70 | bool doesStencilWrite, |
| 71 | GrColor* color, |
| 72 | const GrDrawTargetCaps& caps) { |
| 73 | // We never look at the color input |
| 74 | return GrXferProcessor::kIgnoreColor_OptFlag; |
| 75 | } |
| 76 | |
| 77 | void GrCoverageSetOpXP::getBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const { |
| 78 | switch (fRegionOp) { |
| 79 | case SkRegion::kReplace_Op: |
| 80 | blendInfo->fSrcBlend = kOne_GrBlendCoeff; |
| 81 | blendInfo->fDstBlend = kZero_GrBlendCoeff; |
| 82 | break; |
| 83 | case SkRegion::kIntersect_Op: |
| 84 | blendInfo->fSrcBlend = kDC_GrBlendCoeff; |
| 85 | blendInfo->fDstBlend = kZero_GrBlendCoeff; |
| 86 | break; |
| 87 | case SkRegion::kUnion_Op: |
| 88 | blendInfo->fSrcBlend = kOne_GrBlendCoeff; |
| 89 | blendInfo->fDstBlend = kISC_GrBlendCoeff; |
| 90 | break; |
| 91 | case SkRegion::kXOR_Op: |
| 92 | blendInfo->fSrcBlend = kIDC_GrBlendCoeff; |
| 93 | blendInfo->fDstBlend = kISC_GrBlendCoeff; |
| 94 | break; |
| 95 | case SkRegion::kDifference_Op: |
| 96 | blendInfo->fSrcBlend = kZero_GrBlendCoeff; |
| 97 | blendInfo->fDstBlend = kISC_GrBlendCoeff; |
| 98 | break; |
| 99 | case SkRegion::kReverseDifference_Op: |
| 100 | blendInfo->fSrcBlend = kIDC_GrBlendCoeff; |
| 101 | blendInfo->fDstBlend = kZero_GrBlendCoeff; |
| 102 | break; |
| 103 | } |
| 104 | blendInfo->fBlendConstant = 0; |
| 105 | } |
| 106 | |
| 107 | /////////////////////////////////////////////////////////////////////////////// |
| 108 | |
| 109 | GrCoverageSetOpXPFactory::GrCoverageSetOpXPFactory(SkRegion::Op regionOp, bool invertCoverage) |
| 110 | : fRegionOp(regionOp) |
| 111 | , fInvertCoverage(invertCoverage) { |
| 112 | this->initClassID<GrCoverageSetOpXPFactory>(); |
| 113 | } |
| 114 | |
| 115 | GrXPFactory* GrCoverageSetOpXPFactory::Create(SkRegion::Op regionOp, bool invertCoverage) { |
| 116 | switch (regionOp) { |
| 117 | case SkRegion::kReplace_Op: { |
| 118 | if (invertCoverage) { |
| 119 | static GrCoverageSetOpXPFactory gReplaceCDXPFI(regionOp, invertCoverage); |
| 120 | return SkRef(&gReplaceCDXPFI); |
| 121 | } else { |
| 122 | static GrCoverageSetOpXPFactory gReplaceCDXPF(regionOp, invertCoverage); |
| 123 | return SkRef(&gReplaceCDXPF); |
| 124 | } |
| 125 | break; |
| 126 | } |
| 127 | case SkRegion::kIntersect_Op: { |
| 128 | if (invertCoverage) { |
| 129 | static GrCoverageSetOpXPFactory gIntersectCDXPFI(regionOp, invertCoverage); |
| 130 | return SkRef(&gIntersectCDXPFI); |
| 131 | } else { |
| 132 | static GrCoverageSetOpXPFactory gIntersectCDXPF(regionOp, invertCoverage); |
| 133 | return SkRef(&gIntersectCDXPF); |
| 134 | } |
| 135 | break; |
| 136 | } |
| 137 | case SkRegion::kUnion_Op: { |
| 138 | if (invertCoverage) { |
| 139 | static GrCoverageSetOpXPFactory gUnionCDXPFI(regionOp, invertCoverage); |
| 140 | return SkRef(&gUnionCDXPFI); |
| 141 | } else { |
| 142 | static GrCoverageSetOpXPFactory gUnionCDXPF(regionOp, invertCoverage); |
| 143 | return SkRef(&gUnionCDXPF); |
| 144 | } |
| 145 | break; |
| 146 | } |
| 147 | case SkRegion::kXOR_Op: { |
| 148 | if (invertCoverage) { |
| 149 | static GrCoverageSetOpXPFactory gXORCDXPFI(regionOp, invertCoverage); |
| 150 | return SkRef(&gXORCDXPFI); |
| 151 | } else { |
| 152 | static GrCoverageSetOpXPFactory gXORCDXPF(regionOp, invertCoverage); |
| 153 | return SkRef(&gXORCDXPF); |
| 154 | } |
| 155 | break; |
| 156 | } |
| 157 | case SkRegion::kDifference_Op: { |
| 158 | if (invertCoverage) { |
| 159 | static GrCoverageSetOpXPFactory gDifferenceCDXPFI(regionOp, invertCoverage); |
| 160 | return SkRef(&gDifferenceCDXPFI); |
| 161 | } else { |
| 162 | static GrCoverageSetOpXPFactory gDifferenceCDXPF(regionOp, invertCoverage); |
| 163 | return SkRef(&gDifferenceCDXPF); |
| 164 | } |
| 165 | break; |
| 166 | } |
| 167 | case SkRegion::kReverseDifference_Op: { |
| 168 | if (invertCoverage) { |
| 169 | static GrCoverageSetOpXPFactory gRevDiffCDXPFI(regionOp, invertCoverage); |
| 170 | return SkRef(&gRevDiffCDXPFI); |
| 171 | } else { |
| 172 | static GrCoverageSetOpXPFactory gRevDiffCDXPF(regionOp, invertCoverage); |
| 173 | return SkRef(&gRevDiffCDXPF); |
| 174 | } |
| 175 | break; |
| 176 | } |
| 177 | default: |
| 178 | return NULL; |
| 179 | } |
| 180 | } |
| 181 | |
bsalomon | 50785a3 | 2015-02-06 07:02:37 -0800 | [diff] [blame^] | 182 | GrXferProcessor* |
| 183 | GrCoverageSetOpXPFactory::onCreateXferProcessor(const GrProcOptInfo& colorPOI, |
| 184 | const GrProcOptInfo& covPOI, |
| 185 | const GrDeviceCoordTexture* dstCopy) const { |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 186 | return GrCoverageSetOpXP::Create(fRegionOp, fInvertCoverage); |
| 187 | } |
| 188 | |
egdaniel | 9e4ecdc | 2014-12-18 12:44:55 -0800 | [diff] [blame] | 189 | void GrCoverageSetOpXPFactory::getInvariantOutput(const GrProcOptInfo& colorPOI, |
| 190 | const GrProcOptInfo& coveragePOI, |
egdaniel | 9e4ecdc | 2014-12-18 12:44:55 -0800 | [diff] [blame] | 191 | GrXPFactory::InvariantOutput* output) const { |
| 192 | if (SkRegion::kReplace_Op == fRegionOp) { |
| 193 | if (coveragePOI.isSolidWhite()) { |
| 194 | output->fBlendedColor = GrColor_WHITE; |
| 195 | output->fBlendedColorFlags = kRGBA_GrColorComponentFlags; |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 196 | } else { |
egdaniel | 9e4ecdc | 2014-12-18 12:44:55 -0800 | [diff] [blame] | 197 | output->fBlendedColorFlags = 0; |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 198 | } |
egdaniel | 9e4ecdc | 2014-12-18 12:44:55 -0800 | [diff] [blame] | 199 | |
egdaniel | 71e236c | 2015-01-20 06:34:51 -0800 | [diff] [blame] | 200 | output->fWillBlendWithDst = false; |
egdaniel | 9e4ecdc | 2014-12-18 12:44:55 -0800 | [diff] [blame] | 201 | } else { |
| 202 | output->fBlendedColorFlags = 0; |
| 203 | output->fWillBlendWithDst = true; |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 204 | } |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 205 | } |
| 206 | |
egdaniel | 8750924 | 2014-12-17 13:37:13 -0800 | [diff] [blame] | 207 | GR_DEFINE_XP_FACTORY_TEST(GrCoverageSetOpXPFactory); |
| 208 | |
| 209 | GrXPFactory* GrCoverageSetOpXPFactory::TestCreate(SkRandom* random, |
| 210 | GrContext*, |
| 211 | const GrDrawTargetCaps&, |
| 212 | GrTexture*[]) { |
| 213 | SkRegion::Op regionOp = SkRegion::Op(random->nextULessThan(SkRegion::kLastOp + 1)); |
| 214 | bool invertCoverage = random->nextBool(); |
| 215 | return GrCoverageSetOpXPFactory::Create(regionOp, invertCoverage); |
| 216 | } |
| 217 | |