1/* 2 * Copyright 2018 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8/************************************************************************************************** 9 *** This file was autogenerated from GrDitherEffect.fp; do not modify. 10 **************************************************************************************************/ 11#include "GrDitherEffect.h" 12#if SK_SUPPORT_GPU 13#include "glsl/GrGLSLFragmentProcessor.h" 14#include "glsl/GrGLSLFragmentShaderBuilder.h" 15#include "glsl/GrGLSLProgramBuilder.h" 16#include "GrTexture.h" 17#include "SkSLCPP.h" 18#include "SkSLUtil.h" 19class GrGLSLDitherEffect : public GrGLSLFragmentProcessor { 20public: 21 GrGLSLDitherEffect() {} 22 void emitCode(EmitArgs& args) override { 23 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; 24 const GrDitherEffect& _outer = args.fFp.cast<GrDitherEffect>(); 25 (void)_outer; 26 auto rangeType = _outer.rangeType(); 27 (void)rangeType; 28 fragBuilder->codeAppendf( 29 "half value;\nhalf range;\n@switch (%d) {\n case 0:\n range = " 30 "0.0039215686274509803;\n break;\n case 1:\n range = " 31 "0.015873015873015872;\n break;\n default:\n range = " 32 "0.066666666666666666;\n break;\n}\n@if (sk_Caps.integerSupport) {\n " 33 "uint x = uint(sk_FragCoord.x);\n uint y = uint(sk_FragCoord.y);\n uint m = " 34 "(((((y & 1) << 5 | (x & 1) << 4) | (y & 2) << 2) | (x & 2) << 1) | (y & 4) >> 1) " 35 "| (x & 4) >> 2;\n value = float(float(half(m)) / 64.0) - 0.4", 36 _outer.rangeType()); 37 fragBuilder->codeAppendf( 38 "921875;\n} else {\n half4 modValues = half4(mod(sk_FragCoord.xyxy, " 39 "float4(half4(2.0, 2.0, 4.0, 4.0))));\n half4 stepValues = " 40 "half4(step(float4(modValues), float4(half4(1.0, 1.0, 2.0, 2.0))));\n value = " 41 "float(dot(stepValues, half4(0.5, 0.25, 0.125, 0.0625))) - 0.46875;\n}\n%s = " 42 "half4(clamp(float3(%s.xyz + value * range), 0.0, float(%s.w)), %s.w);\n", 43 args.fOutputColor, args.fInputColor ? args.fInputColor : "half4(1)", 44 args.fInputColor ? args.fInputColor : "half4(1)", 45 args.fInputColor ? args.fInputColor : "half4(1)"); 46 } 47 48private: 49 void onSetData(const GrGLSLProgramDataManager& pdman, 50 const GrFragmentProcessor& _proc) override {} 51}; 52GrGLSLFragmentProcessor* GrDitherEffect::onCreateGLSLInstance() const { 53 return new GrGLSLDitherEffect(); 54} 55void GrDitherEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, 56 GrProcessorKeyBuilder* b) const { 57 b->add32((int32_t)fRangeType); 58} 59bool GrDitherEffect::onIsEqual(const GrFragmentProcessor& other) const { 60 const GrDitherEffect& that = other.cast<GrDitherEffect>(); 61 (void)that; 62 if (fRangeType != that.fRangeType) return false; 63 return true; 64} 65GrDitherEffect::GrDitherEffect(const GrDitherEffect& src) 66 : INHERITED(kGrDitherEffect_ClassID, src.optimizationFlags()), fRangeType(src.fRangeType) {} 67std::unique_ptr<GrFragmentProcessor> GrDitherEffect::clone() const { 68 return std::unique_ptr<GrFragmentProcessor>(new GrDitherEffect(*this)); 69} 70GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrDitherEffect); 71#if GR_TEST_UTILS 72std::unique_ptr<GrFragmentProcessor> GrDitherEffect::TestCreate(GrProcessorTestData* testData) { 73 float range = testData->fRandom->nextRangeF(0.001f, 0.05f); 74 return std::unique_ptr<GrFragmentProcessor>(new GrDitherEffect(range)); 75} 76#endif 77#endif 78