| /* |
| * Copyright 2020 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 GrDitherEffect.fp; do not modify. |
| **************************************************************************************************/ |
| #include "GrDitherEffect.h" |
| |
| #include "src/core/SkUtils.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 GrGLSLDitherEffect : public GrGLSLFragmentProcessor { |
| public: |
| GrGLSLDitherEffect() {} |
| void emitCode(EmitArgs& args) override { |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| const GrDitherEffect& _outer = args.fFp.cast<GrDitherEffect>(); |
| (void)_outer; |
| auto range = _outer.range; |
| (void)range; |
| rangeVar = args.fUniformHandler->addUniform( |
| &_outer, kFragment_GrShaderFlag, kHalf_GrSLType, "range"); |
| SkString _sample0 = this->invokeChild(0, args); |
| fragBuilder->codeAppendf( |
| R"SkSL(half4 color = %s; |
| half value; |
| @if (sk_Caps.integerSupport) { |
| uint x = uint(sk_FragCoord.x); |
| uint y = uint(sk_FragCoord.y) ^ x; |
| uint m = (((((y & 1) << 5 | (x & 1) << 4) | (y & 2) << 2) | (x & 2) << 1) | (y & 4) >> 1) | (x & 4) >> 2; |
| value = half(m) / 64.0 - 0.4921875; |
| } else { |
| half4 bits = mod(half4(sk_FragCoord.yxyx), half4(2.0, 2.0, 4.0, 4.0)); |
| bits.zw = step(2.0, bits.zw); |
| bits.xz = abs(bits.xz - bits.yw); |
| value = dot(bits, half4(0.5, 0.25, 0.125, 0.0625)) - 0.46875; |
| } |
| return half4(clamp(color.xyz + value * %s, 0.0, color.w), color.w); |
| )SkSL", |
| _sample0.c_str(), |
| args.fUniformHandler->getUniformCStr(rangeVar)); |
| } |
| |
| private: |
| void onSetData(const GrGLSLProgramDataManager& pdman, |
| const GrFragmentProcessor& _proc) override { |
| const GrDitherEffect& _outer = _proc.cast<GrDitherEffect>(); |
| { pdman.set1f(rangeVar, _outer.range); } |
| } |
| UniformHandle rangeVar; |
| }; |
| std::unique_ptr<GrGLSLFragmentProcessor> GrDitherEffect::onMakeProgramImpl() const { |
| return std::make_unique<GrGLSLDitherEffect>(); |
| } |
| void GrDitherEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, |
| GrProcessorKeyBuilder* b) const {} |
| bool GrDitherEffect::onIsEqual(const GrFragmentProcessor& other) const { |
| const GrDitherEffect& that = other.cast<GrDitherEffect>(); |
| (void)that; |
| if (range != that.range) return false; |
| return true; |
| } |
| GrDitherEffect::GrDitherEffect(const GrDitherEffect& src) |
| : INHERITED(kGrDitherEffect_ClassID, src.optimizationFlags()), range(src.range) { |
| this->cloneAndRegisterAllChildProcessors(src); |
| } |
| std::unique_ptr<GrFragmentProcessor> GrDitherEffect::clone() const { |
| return std::make_unique<GrDitherEffect>(*this); |
| } |
| #if GR_TEST_UTILS |
| SkString GrDitherEffect::onDumpInfo() const { return SkStringPrintf("(range=%f)", range); } |
| #endif |
| GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrDitherEffect); |
| #if GR_TEST_UTILS |
| std::unique_ptr<GrFragmentProcessor> GrDitherEffect::TestCreate(GrProcessorTestData* d) { |
| float range = 1.0f - d->fRandom->nextRangeF(0.0f, 1.0f); |
| return GrDitherEffect::Make(GrProcessorUnitTest::MakeChildFP(d), range); |
| } |
| #endif |