src/gpu/effects/generated/GrModulateAlphaEffect.cpp

/*
 * 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 GrModulateAlphaEffect.fp; do not modify.
 **************************************************************************************************/
#include "GrModulateAlphaEffect.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 GrGLSLModulateAlphaEffect : public GrGLSLFragmentProcessor {
public:
    GrGLSLModulateAlphaEffect() {}
    void emitCode(EmitArgs& args) override {
        GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
        const GrModulateAlphaEffect& _outer = args.fFp.cast<GrModulateAlphaEffect>();
        (void)_outer;
        auto color = _outer.color;
        (void)color;
        colorVar = args.fUniformHandler->addUniform(&_outer, kFragment_GrShaderFlag,
                                                    kHalf4_GrSLType, "color");
        SkString _input618(args.fInputColor);
        SkString _sample618;
        if (_outer.inputFP_index >= 0) {
            _sample618 = this->invokeChild(_outer.inputFP_index, _input618.c_str(), args);
        } else {
            _sample618.swap(_input618);
        }
        fragBuilder->codeAppendf(
                R"SkSL(%s = %s * %s.w;
)SkSL",
                args.fOutputColor, args.fUniformHandler->getUniformCStr(colorVar),
                _sample618.c_str());
    }

private:
    void onSetData(const GrGLSLProgramDataManager& pdman,
                   const GrFragmentProcessor& _proc) override {
        const GrModulateAlphaEffect& _outer = _proc.cast<GrModulateAlphaEffect>();
        {
            const SkPMColor4f& colorValue = _outer.color;
            if (colorPrev != colorValue) {
                colorPrev = colorValue;
                pdman.set4fv(colorVar, 1, colorValue.vec());
            }
        }
    }
    SkPMColor4f colorPrev = {SK_FloatNaN, SK_FloatNaN, SK_FloatNaN, SK_FloatNaN};
    UniformHandle colorVar;
};
GrGLSLFragmentProcessor* GrModulateAlphaEffect::onCreateGLSLInstance() const {
    return new GrGLSLModulateAlphaEffect();
}
void GrModulateAlphaEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
                                                  GrProcessorKeyBuilder* b) const {}
bool GrModulateAlphaEffect::onIsEqual(const GrFragmentProcessor& other) const {
    const GrModulateAlphaEffect& that = other.cast<GrModulateAlphaEffect>();
    (void)that;
    if (color != that.color) return false;
    return true;
}
GrModulateAlphaEffect::GrModulateAlphaEffect(const GrModulateAlphaEffect& src)
        : INHERITED(kGrModulateAlphaEffect_ClassID, src.optimizationFlags()), color(src.color) {
    if (src.inputFP_index >= 0) {
        inputFP_index = this->cloneAndRegisterChildProcessor(src.childProcessor(src.inputFP_index));
    }
}
std::unique_ptr<GrFragmentProcessor> GrModulateAlphaEffect::clone() const {
    return std::unique_ptr<GrFragmentProcessor>(new GrModulateAlphaEffect(*this));
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrModulateAlphaEffect);
#if GR_TEST_UTILS
std::unique_ptr<GrFragmentProcessor> GrModulateAlphaEffect::TestCreate(GrProcessorTestData* d) {
    SkPMColor4f color;
    int colorPicker = d->fRandom->nextULessThan(3);
    switch (colorPicker) {
        case 0: {
            uint32_t a = d->fRandom->nextULessThan(0x100);
            uint32_t r = d->fRandom->nextULessThan(a + 1);
            uint32_t g = d->fRandom->nextULessThan(a + 1);
            uint32_t b = d->fRandom->nextULessThan(a + 1);
            color = SkPMColor4f::FromBytes_RGBA(GrColorPackRGBA(r, g, b, a));
            break;
        }
        case 1:
            color = SK_PMColor4fTRANSPARENT;
            break;
        case 2:
            uint32_t c = d->fRandom->nextULessThan(0x100);
            color = SkPMColor4f::FromBytes_RGBA(c | (c << 8) | (c << 16) | (c << 24));
            break;
    }
    return GrModulateAlphaEffect::Make(/*inputFP=*/nullptr, color);
}
#endif