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/*
* 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 GrDitherEffect.fp; do not modify.
**************************************************************************************************/
#include "GrDitherEffect.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramBuilder.h"
#include "GrTexture.h"
#include "SkSLCPP.h"
#include "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 rangeType = _outer.rangeType();
(void)rangeType;
fragBuilder->codeAppendf(
"half value;\nhalf range;\n@switch (%d) {\n case 0:\n range = "
"0.0039215686274509803;\n break;\n case 1:\n range = "
"0.015873015873015872;\n break;\n default:\n range = "
"0.066666666666666666;\n break;\n}\n@if (sk_Caps.integerSupport) {\n "
"uint x = uint(sk_FragCoord.x);\n uint y = uint(sk_FragCoord.y);\n uint m = "
"(((((y & 1) << 5 | (x & 1) << 4) | (y & 2) << 2) | (x & 2) << 1) | (y & 4) >> 1) "
"| (x & 4) >> 2;\n value = float(float(half(m)) / 64.0) - 0.4",
_outer.rangeType());
fragBuilder->codeAppendf(
"921875;\n} else {\n half4 modValues = half4(mod(sk_FragCoord.xyxy, "
"float4(half4(2.0, 2.0, 4.0, 4.0))));\n half4 stepValues = "
"half4(step(float4(modValues), float4(half4(1.0, 1.0, 2.0, 2.0))));\n value = "
"float(dot(stepValues, half4(0.5, 0.25, 0.125, 0.0625))) - 0.46875;\n}\n%s = "
"half4(clamp(float3(%s.xyz + value * range), 0.0, float(%s.w)), %s.w);\n",
args.fOutputColor, args.fInputColor ? args.fInputColor : "half4(1)",
args.fInputColor ? args.fInputColor : "half4(1)",
args.fInputColor ? args.fInputColor : "half4(1)");
}
private:
void onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& _proc) override {}
};
GrGLSLFragmentProcessor* GrDitherEffect::onCreateGLSLInstance() const {
return new GrGLSLDitherEffect();
}
void GrDitherEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {
b->add32((int32_t)fRangeType);
}
bool GrDitherEffect::onIsEqual(const GrFragmentProcessor& other) const {
const GrDitherEffect& that = other.cast<GrDitherEffect>();
(void)that;
if (fRangeType != that.fRangeType) return false;
return true;
}
GrDitherEffect::GrDitherEffect(const GrDitherEffect& src)
: INHERITED(kGrDitherEffect_ClassID, src.optimizationFlags()), fRangeType(src.fRangeType) {}
std::unique_ptr<GrFragmentProcessor> GrDitherEffect::clone() const {
return std::unique_ptr<GrFragmentProcessor>(new GrDitherEffect(*this));
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrDitherEffect);
#if GR_TEST_UTILS
std::unique_ptr<GrFragmentProcessor> GrDitherEffect::TestCreate(GrProcessorTestData* testData) {
float range = testData->fRandom->nextRangeF(0.001f, 0.05f);
return std::unique_ptr<GrFragmentProcessor>(new GrDitherEffect(range));
}
#endif
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