| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/gpu/GrShaderCaps.h" |
| #include "src/gpu/effects/GrBezierEffect.h" |
| #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "src/gpu/glsl/GrGLSLGeometryProcessor.h" |
| #include "src/gpu/glsl/GrGLSLProgramDataManager.h" |
| #include "src/gpu/glsl/GrGLSLUniformHandler.h" |
| #include "src/gpu/glsl/GrGLSLUtil.h" |
| #include "src/gpu/glsl/GrGLSLVarying.h" |
| #include "src/gpu/glsl/GrGLSLVertexGeoBuilder.h" |
| |
| class GrGLConicEffect : public GrGLSLGeometryProcessor { |
| public: |
| GrGLConicEffect(const GrGeometryProcessor&); |
| |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| static inline void GenKey(const GrGeometryProcessor&, |
| const GrShaderCaps&, |
| GrProcessorKeyBuilder*); |
| |
| void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& primProc, |
| FPCoordTransformIter&& transformIter) override { |
| const GrConicEffect& ce = primProc.cast<GrConicEffect>(); |
| |
| if (!ce.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(ce.viewMatrix())) { |
| fViewMatrix = ce.viewMatrix(); |
| float viewMatrix[3 * 3]; |
| GrGLSLGetMatrix<3>(viewMatrix, fViewMatrix); |
| pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); |
| } |
| |
| if (ce.color() != fColor) { |
| pdman.set4fv(fColorUniform, 1, ce.color().vec()); |
| fColor = ce.color(); |
| } |
| |
| if (ce.coverageScale() != 0xff && ce.coverageScale() != fCoverageScale) { |
| pdman.set1f(fCoverageScaleUniform, GrNormalizeByteToFloat(ce.coverageScale())); |
| fCoverageScale = ce.coverageScale(); |
| } |
| this->setTransformDataHelper(ce.localMatrix(), pdman, &transformIter); |
| } |
| |
| private: |
| SkMatrix fViewMatrix; |
| SkPMColor4f fColor; |
| uint8_t fCoverageScale; |
| GrClipEdgeType fEdgeType; |
| UniformHandle fColorUniform; |
| UniformHandle fCoverageScaleUniform; |
| UniformHandle fViewMatrixUniform; |
| |
| typedef GrGLSLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLConicEffect::GrGLConicEffect(const GrGeometryProcessor& processor) |
| : fViewMatrix(SkMatrix::InvalidMatrix()), fColor(SK_PMColor4fILLEGAL), fCoverageScale(0xff) { |
| const GrConicEffect& ce = processor.cast<GrConicEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLConicEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
| const GrConicEffect& gp = args.fGP.cast<GrConicEffect>(); |
| GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler; |
| GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| |
| // emit attributes |
| varyingHandler->emitAttributes(gp); |
| |
| GrGLSLVarying v(kFloat4_GrSLType); |
| varyingHandler->addVarying("ConicCoeffs", &v); |
| vertBuilder->codeAppendf("%s = %s;", v.vsOut(), gp.inConicCoeffs().name()); |
| |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| // Setup pass through color |
| this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform); |
| |
| // Setup position |
| this->writeOutputPosition(vertBuilder, |
| uniformHandler, |
| gpArgs, |
| gp.inPosition().name(), |
| gp.viewMatrix(), |
| &fViewMatrixUniform); |
| |
| // emit transforms with position |
| this->emitTransforms(vertBuilder, |
| varyingHandler, |
| uniformHandler, |
| gp.inPosition().asShaderVar(), |
| gp.localMatrix(), |
| args.fFPCoordTransformHandler); |
| |
| // TODO: we should check on the number of bits float and half provide and use the smallest one |
| // that suffices. Additionally we should assert that the upstream code only lets us get here if |
| // either float or half provides the required number of bits. |
| |
| GrShaderVar edgeAlpha("edgeAlpha", kHalf_GrSLType, 0); |
| GrShaderVar dklmdx("dklmdx", kFloat3_GrSLType, 0); |
| GrShaderVar dklmdy("dklmdy", kFloat3_GrSLType, 0); |
| GrShaderVar dfdx("dfdx", kFloat_GrSLType, 0); |
| GrShaderVar dfdy("dfdy", kFloat_GrSLType, 0); |
| GrShaderVar gF("gF", kFloat2_GrSLType, 0); |
| GrShaderVar gFM("gFM", kFloat_GrSLType, 0); |
| GrShaderVar func("func", kFloat_GrSLType, 0); |
| |
| fragBuilder->declAppend(edgeAlpha); |
| fragBuilder->declAppend(dklmdx); |
| fragBuilder->declAppend(dklmdy); |
| fragBuilder->declAppend(dfdx); |
| fragBuilder->declAppend(dfdy); |
| fragBuilder->declAppend(gF); |
| fragBuilder->declAppend(gFM); |
| fragBuilder->declAppend(func); |
| |
| switch (fEdgeType) { |
| case GrClipEdgeType::kHairlineAA: { |
| fragBuilder->codeAppendf("%s = dFdx(%s.xyz);", dklmdx.c_str(), v.fsIn()); |
| fragBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), v.fsIn()); |
| fragBuilder->codeAppendf("%s = 2.0 * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdx.c_str(), |
| v.fsIn(), dklmdx.c_str(), |
| v.fsIn(), dklmdx.c_str(), |
| v.fsIn(), dklmdx.c_str()); |
| fragBuilder->codeAppendf("%s = 2.0 * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdy.c_str(), |
| v.fsIn(), dklmdy.c_str(), |
| v.fsIn(), dklmdy.c_str(), |
| v.fsIn(), dklmdy.c_str()); |
| fragBuilder->codeAppendf("%s = float2(%s, %s);", gF.c_str(), dfdx.c_str(), |
| dfdy.c_str()); |
| fragBuilder->codeAppendf("%s = sqrt(dot(%s, %s));", |
| gFM.c_str(), gF.c_str(), gF.c_str()); |
| fragBuilder->codeAppendf("%s = %s.x*%s.x - %s.y*%s.z;", |
| func.c_str(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppendf("%s = abs(%s);", func.c_str(), func.c_str()); |
| fragBuilder->codeAppendf("%s = half(%s / %s);", |
| edgeAlpha.c_str(), func.c_str(), gFM.c_str()); |
| fragBuilder->codeAppendf("%s = max(1.0 - %s, 0.0);", |
| edgeAlpha.c_str(), edgeAlpha.c_str()); |
| // Add line below for smooth cubic ramp |
| // fragBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case GrClipEdgeType::kFillAA: { |
| fragBuilder->codeAppendf("%s = dFdx(%s.xyz);", dklmdx.c_str(), v.fsIn()); |
| fragBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), v.fsIn()); |
| fragBuilder->codeAppendf("%s =" |
| "2.0 * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdx.c_str(), |
| v.fsIn(), dklmdx.c_str(), |
| v.fsIn(), dklmdx.c_str(), |
| v.fsIn(), dklmdx.c_str()); |
| fragBuilder->codeAppendf("%s =" |
| "2.0 * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdy.c_str(), |
| v.fsIn(), dklmdy.c_str(), |
| v.fsIn(), dklmdy.c_str(), |
| v.fsIn(), dklmdy.c_str()); |
| fragBuilder->codeAppendf("%s = float2(%s, %s);", gF.c_str(), dfdx.c_str(), |
| dfdy.c_str()); |
| fragBuilder->codeAppendf("%s = sqrt(dot(%s, %s));", |
| gFM.c_str(), gF.c_str(), gF.c_str()); |
| fragBuilder->codeAppendf("%s = %s.x * %s.x - %s.y * %s.z;", |
| func.c_str(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppendf("%s = half(%s / %s);", |
| edgeAlpha.c_str(), func.c_str(), gFM.c_str()); |
| fragBuilder->codeAppendf("%s = saturate(0.5 - %s);", |
| edgeAlpha.c_str(), edgeAlpha.c_str()); |
| // Add line below for smooth cubic ramp |
| // fragBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case GrClipEdgeType::kFillBW: { |
| fragBuilder->codeAppendf("%s = half(%s.x * %s.x - %s.y * %s.z);", |
| edgeAlpha.c_str(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppendf("%s = half(%s < 0.0);", |
| edgeAlpha.c_str(), edgeAlpha.c_str()); |
| break; |
| } |
| default: |
| SK_ABORT("Shouldn't get here"); |
| } |
| |
| // TODO should we really be doing this? |
| if (gp.coverageScale() != 0xff) { |
| const char* coverageScale; |
| fCoverageScaleUniform = uniformHandler->addUniform(kFragment_GrShaderFlag, |
| kFloat_GrSLType, |
| "Coverage", |
| &coverageScale); |
| fragBuilder->codeAppendf("%s = half4(half(%s) * %s);", |
| args.fOutputCoverage, coverageScale, edgeAlpha.c_str()); |
| } else { |
| fragBuilder->codeAppendf("%s = half4(%s);", args.fOutputCoverage, edgeAlpha.c_str()); |
| } |
| } |
| |
| void GrGLConicEffect::GenKey(const GrGeometryProcessor& gp, |
| const GrShaderCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrConicEffect& ce = gp.cast<GrConicEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| key |= 0xff != ce.coverageScale() ? 0x8 : 0x0; |
| key |= ce.usesLocalCoords() && ce.localMatrix().hasPerspective() ? 0x10 : 0x0; |
| key |= ComputePosKey(ce.viewMatrix()) << 5; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| constexpr GrPrimitiveProcessor::Attribute GrConicEffect::kAttributes[]; |
| |
| GrConicEffect::~GrConicEffect() {} |
| |
| void GrConicEffect::getGLSLProcessorKey(const GrShaderCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLConicEffect::GenKey(*this, caps, b); |
| } |
| |
| GrGLSLPrimitiveProcessor* GrConicEffect::createGLSLInstance(const GrShaderCaps&) const { |
| return new GrGLConicEffect(*this); |
| } |
| |
| GrConicEffect::GrConicEffect(const SkPMColor4f& color, const SkMatrix& viewMatrix, uint8_t coverage, |
| GrClipEdgeType edgeType, const SkMatrix& localMatrix, |
| bool usesLocalCoords) |
| : INHERITED(kGrConicEffect_ClassID) |
| , fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fLocalMatrix(viewMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fCoverageScale(coverage) |
| , fEdgeType(edgeType) { |
| this->setVertexAttributes(kAttributes, SK_ARRAY_COUNT(kAttributes)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrConicEffect); |
| |
| #if GR_TEST_UTILS |
| sk_sp<GrGeometryProcessor> GrConicEffect::TestCreate(GrProcessorTestData* d) { |
| sk_sp<GrGeometryProcessor> gp; |
| do { |
| GrClipEdgeType edgeType = |
| static_cast<GrClipEdgeType>( |
| d->fRandom->nextULessThan(kGrClipEdgeTypeCnt)); |
| gp = GrConicEffect::Make(SkPMColor4f::FromBytes_RGBA(GrRandomColor(d->fRandom)), |
| GrTest::TestMatrix(d->fRandom), edgeType, *d->caps(), |
| GrTest::TestMatrix(d->fRandom), d->fRandom->nextBool()); |
| } while (nullptr == gp); |
| return gp; |
| } |
| #endif |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Quad |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class GrGLQuadEffect : public GrGLSLGeometryProcessor { |
| public: |
| GrGLQuadEffect(const GrGeometryProcessor&); |
| |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| static inline void GenKey(const GrGeometryProcessor&, |
| const GrShaderCaps&, |
| GrProcessorKeyBuilder*); |
| |
| void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& primProc, |
| FPCoordTransformIter&& transformIter) override { |
| const GrQuadEffect& qe = primProc.cast<GrQuadEffect>(); |
| |
| if (!qe.viewMatrix().isIdentity() && !fViewMatrix.cheapEqualTo(qe.viewMatrix())) { |
| fViewMatrix = qe.viewMatrix(); |
| float viewMatrix[3 * 3]; |
| GrGLSLGetMatrix<3>(viewMatrix, fViewMatrix); |
| pdman.setMatrix3f(fViewMatrixUniform, viewMatrix); |
| } |
| |
| if (qe.color() != fColor) { |
| pdman.set4fv(fColorUniform, 1, qe.color().vec()); |
| fColor = qe.color(); |
| } |
| |
| if (qe.coverageScale() != 0xff && qe.coverageScale() != fCoverageScale) { |
| pdman.set1f(fCoverageScaleUniform, GrNormalizeByteToFloat(qe.coverageScale())); |
| fCoverageScale = qe.coverageScale(); |
| } |
| this->setTransformDataHelper(qe.localMatrix(), pdman, &transformIter); |
| } |
| |
| private: |
| SkMatrix fViewMatrix; |
| SkPMColor4f fColor; |
| uint8_t fCoverageScale; |
| GrClipEdgeType fEdgeType; |
| UniformHandle fColorUniform; |
| UniformHandle fCoverageScaleUniform; |
| UniformHandle fViewMatrixUniform; |
| |
| typedef GrGLSLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLQuadEffect::GrGLQuadEffect(const GrGeometryProcessor& processor) |
| : fViewMatrix(SkMatrix::InvalidMatrix()), fColor(SK_PMColor4fILLEGAL), fCoverageScale(0xff) { |
| const GrQuadEffect& ce = processor.cast<GrQuadEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLQuadEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
| const GrQuadEffect& gp = args.fGP.cast<GrQuadEffect>(); |
| GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler; |
| GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| |
| // emit attributes |
| varyingHandler->emitAttributes(gp); |
| |
| GrGLSLVarying v(kHalf4_GrSLType); |
| varyingHandler->addVarying("HairQuadEdge", &v); |
| vertBuilder->codeAppendf("%s = %s;", v.vsOut(), gp.inHairQuadEdge().name()); |
| |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| // Setup pass through color |
| this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform); |
| |
| // Setup position |
| this->writeOutputPosition(vertBuilder, |
| uniformHandler, |
| gpArgs, |
| gp.inPosition().name(), |
| gp.viewMatrix(), |
| &fViewMatrixUniform); |
| |
| // emit transforms with position |
| this->emitTransforms(vertBuilder, |
| varyingHandler, |
| uniformHandler, |
| gp.inPosition().asShaderVar(), |
| gp.localMatrix(), |
| args.fFPCoordTransformHandler); |
| |
| fragBuilder->codeAppendf("half edgeAlpha;"); |
| |
| switch (fEdgeType) { |
| case GrClipEdgeType::kHairlineAA: { |
| fragBuilder->codeAppendf("half2 duvdx = half2(dFdx(%s.xy));", v.fsIn()); |
| fragBuilder->codeAppendf("half2 duvdy = half2(dFdy(%s.xy));", v.fsIn()); |
| fragBuilder->codeAppendf("half2 gF = half2(2.0 * %s.x * duvdx.x - duvdx.y," |
| " 2.0 * %s.x * duvdy.x - duvdy.y);", |
| v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppendf("edgeAlpha = half(%s.x * %s.x - %s.y);", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppend("edgeAlpha = sqrt(edgeAlpha * edgeAlpha / dot(gF, gF));"); |
| fragBuilder->codeAppend("edgeAlpha = max(1.0 - edgeAlpha, 0.0);"); |
| // Add line below for smooth cubic ramp |
| // fragBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case GrClipEdgeType::kFillAA: { |
| fragBuilder->codeAppendf("half2 duvdx = half2(dFdx(%s.xy));", v.fsIn()); |
| fragBuilder->codeAppendf("half2 duvdy = half2(dFdy(%s.xy));", v.fsIn()); |
| fragBuilder->codeAppendf("half2 gF = half2(2.0 * %s.x * duvdx.x - duvdx.y," |
| " 2.0 * %s.x * duvdy.x - duvdy.y);", |
| v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppendf("edgeAlpha = half(%s.x * %s.x - %s.y);", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppend("edgeAlpha = edgeAlpha / sqrt(dot(gF, gF));"); |
| fragBuilder->codeAppend("edgeAlpha = saturate(0.5 - edgeAlpha);"); |
| // Add line below for smooth cubic ramp |
| // fragBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case GrClipEdgeType::kFillBW: { |
| fragBuilder->codeAppendf("edgeAlpha = half(%s.x * %s.x - %s.y);", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| fragBuilder->codeAppend("edgeAlpha = half(edgeAlpha < 0.0);"); |
| break; |
| } |
| default: |
| SK_ABORT("Shouldn't get here"); |
| } |
| |
| if (0xff != gp.coverageScale()) { |
| const char* coverageScale; |
| fCoverageScaleUniform = uniformHandler->addUniform(kFragment_GrShaderFlag, |
| kHalf_GrSLType, |
| "Coverage", |
| &coverageScale); |
| fragBuilder->codeAppendf("%s = half4(%s * edgeAlpha);", args.fOutputCoverage, |
| coverageScale); |
| } else { |
| fragBuilder->codeAppendf("%s = half4(edgeAlpha);", args.fOutputCoverage); |
| } |
| } |
| |
| void GrGLQuadEffect::GenKey(const GrGeometryProcessor& gp, |
| const GrShaderCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrQuadEffect& ce = gp.cast<GrQuadEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| key |= ce.coverageScale() != 0xff ? 0x8 : 0x0; |
| key |= ce.usesLocalCoords() && ce.localMatrix().hasPerspective() ? 0x10 : 0x0; |
| key |= ComputePosKey(ce.viewMatrix()) << 5; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| constexpr GrPrimitiveProcessor::Attribute GrQuadEffect::kAttributes[]; |
| |
| GrQuadEffect::~GrQuadEffect() {} |
| |
| void GrQuadEffect::getGLSLProcessorKey(const GrShaderCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLQuadEffect::GenKey(*this, caps, b); |
| } |
| |
| GrGLSLPrimitiveProcessor* GrQuadEffect::createGLSLInstance(const GrShaderCaps&) const { |
| return new GrGLQuadEffect(*this); |
| } |
| |
| GrQuadEffect::GrQuadEffect(const SkPMColor4f& color, const SkMatrix& viewMatrix, uint8_t coverage, |
| GrClipEdgeType edgeType, const SkMatrix& localMatrix, |
| bool usesLocalCoords) |
| : INHERITED(kGrQuadEffect_ClassID) |
| , fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fLocalMatrix(localMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fCoverageScale(coverage) |
| , fEdgeType(edgeType) { |
| this->setVertexAttributes(kAttributes, SK_ARRAY_COUNT(kAttributes)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrQuadEffect); |
| |
| #if GR_TEST_UTILS |
| sk_sp<GrGeometryProcessor> GrQuadEffect::TestCreate(GrProcessorTestData* d) { |
| sk_sp<GrGeometryProcessor> gp; |
| do { |
| GrClipEdgeType edgeType = static_cast<GrClipEdgeType>( |
| d->fRandom->nextULessThan(kGrClipEdgeTypeCnt)); |
| gp = GrQuadEffect::Make(SkPMColor4f::FromBytes_RGBA(GrRandomColor(d->fRandom)), |
| GrTest::TestMatrix(d->fRandom), edgeType, *d->caps(), |
| GrTest::TestMatrix(d->fRandom), d->fRandom->nextBool()); |
| } while (nullptr == gp); |
| return gp; |
| } |
| #endif |
