| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /************************************************************************************************** |
| *** This file was autogenerated from GrSweepGradientLayout.fp; do not modify. |
| **************************************************************************************************/ |
| #include "GrSweepGradientLayout.h" |
| |
| #include "src/gpu/GrTexture.h" |
| #include "src/gpu/glsl/GrGLSLFragmentProcessor.h" |
| #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "src/gpu/glsl/GrGLSLProgramBuilder.h" |
| #include "src/sksl/SkSLCPP.h" |
| #include "src/sksl/SkSLUtil.h" |
| class GrGLSLSweepGradientLayout : public GrGLSLFragmentProcessor { |
| public: |
| GrGLSLSweepGradientLayout() {} |
| void emitCode(EmitArgs& args) override { |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| const GrSweepGradientLayout& _outer = args.fFp.cast<GrSweepGradientLayout>(); |
| (void)_outer; |
| auto gradientMatrix = _outer.gradientMatrix; |
| (void)gradientMatrix; |
| auto bias = _outer.bias; |
| (void)bias; |
| auto scale = _outer.scale; |
| (void)scale; |
| biasVar = args.fUniformHandler->addUniform(&_outer, kFragment_GrShaderFlag, kHalf_GrSLType, |
| "bias"); |
| scaleVar = args.fUniformHandler->addUniform(&_outer, kFragment_GrShaderFlag, kHalf_GrSLType, |
| "scale"); |
| fragBuilder->codeAppendf( |
| R"SkSL(half angle; |
| if (sk_Caps.atan2ImplementedAsAtanYOverX) { |
| angle = half(2.0 * atan(-%s.y, length(%s) - %s.x)); |
| } else { |
| angle = half(atan(-%s.y, -%s.x)); |
| } |
| half t = ((angle * 0.15915493667125702 + 0.5) + %s) * %s; |
| %s = half4(t, 1.0, 0.0, 0.0); |
| )SkSL", |
| args.fSampleCoord, args.fSampleCoord, args.fSampleCoord, args.fSampleCoord, |
| args.fSampleCoord, args.fUniformHandler->getUniformCStr(biasVar), |
| args.fUniformHandler->getUniformCStr(scaleVar), args.fOutputColor); |
| } |
| |
| private: |
| void onSetData(const GrGLSLProgramDataManager& pdman, |
| const GrFragmentProcessor& _proc) override { |
| const GrSweepGradientLayout& _outer = _proc.cast<GrSweepGradientLayout>(); |
| { |
| float biasValue = _outer.bias; |
| if (biasPrev != biasValue) { |
| biasPrev = biasValue; |
| pdman.set1f(biasVar, biasValue); |
| } |
| float scaleValue = _outer.scale; |
| if (scalePrev != scaleValue) { |
| scalePrev = scaleValue; |
| pdman.set1f(scaleVar, scaleValue); |
| } |
| } |
| } |
| float biasPrev = SK_FloatNaN; |
| float scalePrev = SK_FloatNaN; |
| UniformHandle biasVar; |
| UniformHandle scaleVar; |
| }; |
| GrGLSLFragmentProcessor* GrSweepGradientLayout::onCreateGLSLInstance() const { |
| return new GrGLSLSweepGradientLayout(); |
| } |
| void GrSweepGradientLayout::onGetGLSLProcessorKey(const GrShaderCaps& caps, |
| GrProcessorKeyBuilder* b) const {} |
| bool GrSweepGradientLayout::onIsEqual(const GrFragmentProcessor& other) const { |
| const GrSweepGradientLayout& that = other.cast<GrSweepGradientLayout>(); |
| (void)that; |
| if (gradientMatrix != that.gradientMatrix) return false; |
| if (bias != that.bias) return false; |
| if (scale != that.scale) return false; |
| return true; |
| } |
| GrSweepGradientLayout::GrSweepGradientLayout(const GrSweepGradientLayout& src) |
| : INHERITED(kGrSweepGradientLayout_ClassID, src.optimizationFlags()) |
| , fCoordTransform0(src.fCoordTransform0) |
| , gradientMatrix(src.gradientMatrix) |
| , bias(src.bias) |
| , scale(src.scale) { |
| this->addCoordTransform(&fCoordTransform0); |
| this->setUsesSampleCoordsDirectly(); |
| } |
| std::unique_ptr<GrFragmentProcessor> GrSweepGradientLayout::clone() const { |
| return std::unique_ptr<GrFragmentProcessor>(new GrSweepGradientLayout(*this)); |
| } |
| GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSweepGradientLayout); |
| #if GR_TEST_UTILS |
| std::unique_ptr<GrFragmentProcessor> GrSweepGradientLayout::TestCreate(GrProcessorTestData* d) { |
| SkScalar scale = GrGradientShader::RandomParams::kGradientScale; |
| SkPoint center = {d->fRandom->nextRangeScalar(0.0f, scale), |
| d->fRandom->nextRangeScalar(0.0f, scale)}; |
| |
| GrGradientShader::RandomParams params(d->fRandom); |
| auto shader = params.fUseColors4f |
| ? SkGradientShader::MakeSweep(center.fX, center.fY, params.fColors4f, |
| params.fColorSpace, params.fStops, |
| params.fColorCount) |
| : SkGradientShader::MakeSweep(center.fX, center.fY, params.fColors, |
| params.fStops, params.fColorCount); |
| GrTest::TestAsFPArgs asFPArgs(d); |
| std::unique_ptr<GrFragmentProcessor> fp = as_SB(shader)->asFragmentProcessor(asFPArgs.args()); |
| SkASSERT_RELEASE(fp); |
| return fp; |
| } |
| #endif |
| |
| std::unique_ptr<GrFragmentProcessor> GrSweepGradientLayout::Make(const SkSweepGradient& grad, |
| const GrFPArgs& args) { |
| SkMatrix matrix; |
| if (!grad.totalLocalMatrix(args.fPreLocalMatrix)->invert(&matrix)) { |
| return nullptr; |
| } |
| matrix.postConcat(grad.getGradientMatrix()); |
| return std::unique_ptr<GrFragmentProcessor>( |
| new GrSweepGradientLayout(matrix, grad.getTBias(), grad.getTScale())); |
| } |