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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 GrAlphaThresholdFragmentProcessor.fp; do not modify.
**************************************************************************************************/
#include "GrAlphaThresholdFragmentProcessor.h"
inline GrFragmentProcessor::OptimizationFlags GrAlphaThresholdFragmentProcessor::optFlags(
float outerThreshold) {
if (outerThreshold >= 1.0) {
return kPreservesOpaqueInput_OptimizationFlag |
kCompatibleWithCoverageAsAlpha_OptimizationFlag;
} else {
return kCompatibleWithCoverageAsAlpha_OptimizationFlag;
}
}
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramBuilder.h"
#include "GrTexture.h"
#include "SkSLCPP.h"
#include "SkSLUtil.h"
class GrGLSLAlphaThresholdFragmentProcessor : public GrGLSLFragmentProcessor {
public:
GrGLSLAlphaThresholdFragmentProcessor() {}
void emitCode(EmitArgs& args) override {
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
const GrAlphaThresholdFragmentProcessor& _outer =
args.fFp.cast<GrAlphaThresholdFragmentProcessor>();
(void)_outer;
auto innerThreshold = _outer.innerThreshold();
(void)innerThreshold;
auto outerThreshold = _outer.outerThreshold();
(void)outerThreshold;
fInnerThresholdVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kHalf_GrSLType, kDefault_GrSLPrecision, "innerThreshold");
fOuterThresholdVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kHalf_GrSLType, kDefault_GrSLPrecision, "outerThreshold");
SkString sk_TransformedCoords2D_0 = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
fragBuilder->codeAppendf(
"half4 color = %s;\nhalf4 mask_color = texture(%s, %s).%s;\nif "
"(float(mask_color.w) < 0.5) {\n if (color.w > %s) {\n half scale = %s / "
"color.w;\n color.xyz *= scale;\n color.w = %s;\n }\n} else if "
"(color.w < %s) {\n half scale = float(%s) / max(0.001, float(color.w));\n "
"color.xyz *= scale;\n color.w = %s;\n}\n%s = color;\n",
args.fInputColor ? args.fInputColor : "half4(1)",
fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(),
sk_TransformedCoords2D_0.c_str(),
fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
args.fUniformHandler->getUniformCStr(fOuterThresholdVar),
args.fUniformHandler->getUniformCStr(fOuterThresholdVar),
args.fUniformHandler->getUniformCStr(fOuterThresholdVar),
args.fUniformHandler->getUniformCStr(fInnerThresholdVar),
args.fUniformHandler->getUniformCStr(fInnerThresholdVar),
args.fUniformHandler->getUniformCStr(fInnerThresholdVar), args.fOutputColor);
}
private:
void onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& _proc) override {
const GrAlphaThresholdFragmentProcessor& _outer =
_proc.cast<GrAlphaThresholdFragmentProcessor>();
{
pdman.set1f(fInnerThresholdVar, _outer.innerThreshold());
pdman.set1f(fOuterThresholdVar, _outer.outerThreshold());
}
}
UniformHandle fInnerThresholdVar;
UniformHandle fOuterThresholdVar;
};
GrGLSLFragmentProcessor* GrAlphaThresholdFragmentProcessor::onCreateGLSLInstance() const {
return new GrGLSLAlphaThresholdFragmentProcessor();
}
void GrAlphaThresholdFragmentProcessor::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {}
bool GrAlphaThresholdFragmentProcessor::onIsEqual(const GrFragmentProcessor& other) const {
const GrAlphaThresholdFragmentProcessor& that = other.cast<GrAlphaThresholdFragmentProcessor>();
(void)that;
if (fMask != that.fMask) return false;
if (fInnerThreshold != that.fInnerThreshold) return false;
if (fOuterThreshold != that.fOuterThreshold) return false;
return true;
}
GrAlphaThresholdFragmentProcessor::GrAlphaThresholdFragmentProcessor(
const GrAlphaThresholdFragmentProcessor& src)
: INHERITED(kGrAlphaThresholdFragmentProcessor_ClassID, src.optimizationFlags())
, fMask(src.fMask)
, fInnerThreshold(src.fInnerThreshold)
, fOuterThreshold(src.fOuterThreshold)
, fMaskCoordTransform(src.fMaskCoordTransform) {
this->addTextureSampler(&fMask);
this->addCoordTransform(&fMaskCoordTransform);
}
std::unique_ptr<GrFragmentProcessor> GrAlphaThresholdFragmentProcessor::clone() const {
return std::unique_ptr<GrFragmentProcessor>(new GrAlphaThresholdFragmentProcessor(*this));
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrAlphaThresholdFragmentProcessor);
#if GR_TEST_UTILS
std::unique_ptr<GrFragmentProcessor> GrAlphaThresholdFragmentProcessor::TestCreate(
GrProcessorTestData* testData) {
sk_sp<GrTextureProxy> maskProxy = testData->textureProxy(GrProcessorUnitTest::kAlphaTextureIdx);
// Make the inner and outer thresholds be in (0, 1) exclusive and be sorted correctly.
float innerThresh = testData->fRandom->nextUScalar1() * .99f + 0.005f;
float outerThresh = testData->fRandom->nextUScalar1() * .99f + 0.005f;
const int kMaxWidth = 1000;
const int kMaxHeight = 1000;
uint32_t width = testData->fRandom->nextULessThan(kMaxWidth);
uint32_t height = testData->fRandom->nextULessThan(kMaxHeight);
uint32_t x = testData->fRandom->nextULessThan(kMaxWidth - width);
uint32_t y = testData->fRandom->nextULessThan(kMaxHeight - height);
SkIRect bounds = SkIRect::MakeXYWH(x, y, width, height);
return GrAlphaThresholdFragmentProcessor::Make(std::move(maskProxy), innerThresh, outerThresh,
bounds);
}
#endif
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