| /* |
| * 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/effects/GrBezierEffect.h" |
| |
| #include "src/gpu/GrShaderCaps.h" |
| #include "src/gpu/KeyBuilder.h" |
| #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "src/gpu/glsl/GrGLSLProgramDataManager.h" |
| #include "src/gpu/glsl/GrGLSLUniformHandler.h" |
| #include "src/gpu/glsl/GrGLSLVarying.h" |
| #include "src/gpu/glsl/GrGLSLVertexGeoBuilder.h" |
| |
| class GrConicEffect::Impl : public ProgramImpl { |
| public: |
| void setData(const GrGLSLProgramDataManager& pdman, |
| const GrShaderCaps& shaderCaps, |
| const GrGeometryProcessor& geomProc) override { |
| const GrConicEffect& ce = geomProc.cast<GrConicEffect>(); |
| |
| SetTransform(pdman, shaderCaps, fViewMatrixUniform, ce.fViewMatrix, &fViewMatrix); |
| SetTransform(pdman, shaderCaps, fLocalMatrixUniform, ce.fLocalMatrix, &fLocalMatrix); |
| |
| if (fColor != ce.fColor) { |
| pdman.set4fv(fColorUniform, 1, ce.fColor.vec()); |
| fColor = ce.fColor; |
| } |
| |
| if (ce.fCoverageScale != 0xff && ce.fCoverageScale != fCoverageScale) { |
| pdman.set1f(fCoverageScaleUniform, GrNormalizeByteToFloat(ce.fCoverageScale)); |
| fCoverageScale = ce.fCoverageScale; |
| } |
| } |
| |
| private: |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| SkMatrix fViewMatrix = SkMatrix::InvalidMatrix(); |
| SkMatrix fLocalMatrix = SkMatrix::InvalidMatrix(); |
| SkPMColor4f fColor = SK_PMColor4fILLEGAL; |
| uint8_t fCoverageScale = 0xFF; |
| |
| UniformHandle fColorUniform; |
| UniformHandle fCoverageScaleUniform; |
| UniformHandle fViewMatrixUniform; |
| UniformHandle fLocalMatrixUniform; |
| }; |
| |
| void GrConicEffect::Impl::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
| const GrConicEffect& gp = args.fGeomProc.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 |
| fragBuilder->codeAppendf("half4 %s;", args.fOutputColor); |
| this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform); |
| |
| // Setup position |
| WriteOutputPosition(vertBuilder, |
| uniformHandler, |
| *args.fShaderCaps, |
| gpArgs, |
| gp.inPosition().name(), |
| gp.fViewMatrix, |
| &fViewMatrixUniform); |
| if (gp.fUsesLocalCoords) { |
| WriteLocalCoord(vertBuilder, |
| uniformHandler, |
| *args.fShaderCaps, |
| gpArgs, |
| gp.inPosition().asShaderVar(), |
| gp.fLocalMatrix, |
| &fLocalMatrixUniform); |
| } |
| |
| // 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); |
| |
| 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);"); |
| |
| // TODO should we really be doing this? |
| if (gp.fCoverageScale != 0xff) { |
| const char* coverageScale; |
| fCoverageScaleUniform = uniformHandler->addUniform(nullptr, |
| kFragment_GrShaderFlag, |
| kFloat_GrSLType, |
| "Coverage", |
| &coverageScale); |
| fragBuilder->codeAppendf("half4 %s = half4(half(%s) * %s);", |
| args.fOutputCoverage, coverageScale, edgeAlpha.c_str()); |
| } else { |
| fragBuilder->codeAppendf("half4 %s = half4(%s);", args.fOutputCoverage, edgeAlpha.c_str()); |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrConicEffect::~GrConicEffect() = default; |
| |
| void GrConicEffect::addToKey(const GrShaderCaps& caps, skgpu::KeyBuilder* b) const { |
| uint32_t key = 0; |
| key |= fCoverageScale == 0xff ? 0x8 : 0x0; |
| key |= fUsesLocalCoords ? 0x10 : 0x0; |
| key = ProgramImpl::AddMatrixKeys(caps, |
| key, |
| fViewMatrix, |
| fUsesLocalCoords ? fLocalMatrix : SkMatrix::I()); |
| b->add32(key); |
| } |
| |
| std::unique_ptr<GrGeometryProcessor::ProgramImpl> GrConicEffect::makeProgramImpl( |
| const GrShaderCaps&) const { |
| return std::make_unique<Impl>(); |
| } |
| |
| GrConicEffect::GrConicEffect(const SkPMColor4f& color, const SkMatrix& viewMatrix, uint8_t coverage, |
| const SkMatrix& localMatrix, bool usesLocalCoords) |
| : INHERITED(kGrConicEffect_ClassID) |
| , fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fLocalMatrix(viewMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fCoverageScale(coverage) { |
| this->setVertexAttributesWithImplicitOffsets(kAttributes, SK_ARRAY_COUNT(kAttributes)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrConicEffect); |
| |
| #if GR_TEST_UTILS |
| GrGeometryProcessor* GrConicEffect::TestCreate(GrProcessorTestData* d) { |
| GrColor color = GrTest::RandomColor(d->fRandom); |
| SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| SkMatrix localMatrix = GrTest::TestMatrix(d->fRandom); |
| bool usesLocalCoords = d->fRandom->nextBool(); |
| return GrConicEffect::Make(d->allocator(), |
| SkPMColor4f::FromBytes_RGBA(color), |
| viewMatrix, |
| *d->caps(), |
| localMatrix, |
| usesLocalCoords); |
| } |
| #endif |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Quad |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class GrQuadEffect::Impl : public ProgramImpl { |
| public: |
| void setData(const GrGLSLProgramDataManager& pdman, |
| const GrShaderCaps& shaderCaps, |
| const GrGeometryProcessor& geomProc) override { |
| const GrQuadEffect& qe = geomProc.cast<GrQuadEffect>(); |
| |
| SetTransform(pdman, shaderCaps, fViewMatrixUniform, qe.fViewMatrix, &fViewMatrix); |
| SetTransform(pdman, shaderCaps, fLocalMatrixUniform, qe.fLocalMatrix, &fLocalMatrix); |
| |
| if (qe.fColor != fColor) { |
| pdman.set4fv(fColorUniform, 1, qe.fColor.vec()); |
| fColor = qe.fColor; |
| } |
| |
| if (qe.fCoverageScale != 0xff && qe.fCoverageScale != fCoverageScale) { |
| pdman.set1f(fCoverageScaleUniform, GrNormalizeByteToFloat(qe.fCoverageScale)); |
| fCoverageScale = qe.fCoverageScale; |
| } |
| } |
| |
| private: |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| SkMatrix fViewMatrix = SkMatrix::InvalidMatrix(); |
| SkMatrix fLocalMatrix = SkMatrix::InvalidMatrix(); |
| SkPMColor4f fColor = SK_PMColor4fILLEGAL; |
| uint8_t fCoverageScale = 0xFF; |
| |
| UniformHandle fColorUniform; |
| UniformHandle fCoverageScaleUniform; |
| UniformHandle fViewMatrixUniform; |
| UniformHandle fLocalMatrixUniform; |
| }; |
| |
| void GrQuadEffect::Impl::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
| const GrQuadEffect& gp = args.fGeomProc.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 |
| fragBuilder->codeAppendf("half4 %s;", args.fOutputColor); |
| this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform); |
| |
| // Setup position |
| WriteOutputPosition(vertBuilder, |
| uniformHandler, |
| *args.fShaderCaps, |
| gpArgs, |
| gp.inPosition().name(), |
| gp.fViewMatrix, |
| &fViewMatrixUniform); |
| if (gp.fUsesLocalCoords) { |
| WriteLocalCoord(vertBuilder, |
| uniformHandler, |
| *args.fShaderCaps, |
| gpArgs, |
| gp.inPosition().asShaderVar(), |
| gp.fLocalMatrix, |
| &fLocalMatrixUniform); |
| } |
| |
| fragBuilder->codeAppendf("half edgeAlpha;"); |
| |
| 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);"); |
| |
| if (gp.fCoverageScale != 0xFF) { |
| const char* coverageScale; |
| fCoverageScaleUniform = uniformHandler->addUniform(nullptr, |
| kFragment_GrShaderFlag, |
| kHalf_GrSLType, |
| "Coverage", |
| &coverageScale); |
| fragBuilder->codeAppendf("half4 %s = half4(%s * edgeAlpha);", args.fOutputCoverage, |
| coverageScale); |
| } else { |
| fragBuilder->codeAppendf("half4 %s = half4(edgeAlpha);", args.fOutputCoverage); |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrQuadEffect::~GrQuadEffect() = default; |
| |
| void GrQuadEffect::addToKey(const GrShaderCaps& caps, skgpu::KeyBuilder* b) const { |
| uint32_t key = 0; |
| key |= fCoverageScale != 0xff ? 0x8 : 0x0; |
| key |= fUsesLocalCoords ? 0x10 : 0x0; |
| key = ProgramImpl::AddMatrixKeys(caps, |
| key, |
| fViewMatrix, |
| fUsesLocalCoords ? fLocalMatrix : SkMatrix::I()); |
| b->add32(key); |
| } |
| |
| std::unique_ptr<GrGeometryProcessor::ProgramImpl> GrQuadEffect::makeProgramImpl( |
| const GrShaderCaps&) const { |
| return std::make_unique<Impl>(); |
| } |
| |
| GrQuadEffect::GrQuadEffect(const SkPMColor4f& color, const SkMatrix& viewMatrix, uint8_t coverage, |
| const SkMatrix& localMatrix, bool usesLocalCoords) |
| : INHERITED(kGrQuadEffect_ClassID) |
| , fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fLocalMatrix(localMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fCoverageScale(coverage) { |
| this->setVertexAttributesWithImplicitOffsets(kAttributes, SK_ARRAY_COUNT(kAttributes)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrQuadEffect); |
| |
| #if GR_TEST_UTILS |
| GrGeometryProcessor* GrQuadEffect::TestCreate(GrProcessorTestData* d) { |
| GrColor color = GrTest::RandomColor(d->fRandom); |
| SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| SkMatrix localMatrix = GrTest::TestMatrix(d->fRandom); |
| bool usesLocalCoords = d->fRandom->nextBool(); |
| return GrQuadEffect::Make(d->allocator(), |
| SkPMColor4f::FromBytes_RGBA(color), |
| viewMatrix, |
| *d->caps(), |
| localMatrix, |
| usesLocalCoords); |
| } |
| #endif |
