src/third_party/skia/src/gpu/effects/GrSimpleTextureEffect.cpp

/*
 * Copyright 2017 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 GrSimpleTextureEffect.fp; do not modify.
 */
#include "GrSimpleTextureEffect.h"
#if SK_SUPPORT_GPU
#include "glsl/GrGLSLColorSpaceXformHelper.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramBuilder.h"
#include "SkSLCPP.h"
#include "SkSLUtil.h"
class GrGLSLSimpleTextureEffect : public GrGLSLFragmentProcessor {
public:
    GrGLSLSimpleTextureEffect() {}
    void emitCode(EmitArgs& args) override {
        GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
        const GrSimpleTextureEffect& _outer = args.fFp.cast<GrSimpleTextureEffect>();
        (void)_outer;
        fColorSpaceHelper.emitCode(args.fUniformHandler, _outer.colorXform().get());
        SkSL::String sk_TransformedCoords2D_0 =
                fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
        fragBuilder->codeAppendf(
                "vec4 _tmpVar1;%s = %s * %stexture(%s, %s).%s%s;\n", args.fOutputColor,
                args.fInputColor ? args.fInputColor : "vec4(1)",
                fColorSpaceHelper.isValid() ? "(_tmpVar1 = " : "",
                fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(),
                sk_TransformedCoords2D_0.c_str(),
                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
                fColorSpaceHelper.isValid()
                        ? SkStringPrintf(", vec4(clamp((%s * vec4(_tmpVar1.rgb, 1.0)).rgb, 0.0, "
                                         "_tmpVar1.a), _tmpVar1.a))",
                                         args.fUniformHandler->getUniformCStr(
                                                 fColorSpaceHelper.gamutXformUniform()))
                                  .c_str()
                        : "");
    }

private:
    void onSetData(const GrGLSLProgramDataManager& pdman,
                   const GrFragmentProcessor& _proc) override {
        const GrSimpleTextureEffect& _outer = _proc.cast<GrSimpleTextureEffect>();
        {
            if (fColorSpaceHelper.isValid()) {
                fColorSpaceHelper.setData(pdman, _outer.colorXform().get());
            }
        }
    }
    UniformHandle fImageVar;
    GrGLSLColorSpaceXformHelper fColorSpaceHelper;
};
GrGLSLFragmentProcessor* GrSimpleTextureEffect::onCreateGLSLInstance() const {
    return new GrGLSLSimpleTextureEffect();
}
void GrSimpleTextureEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
                                                  GrProcessorKeyBuilder* b) const {
    b->add32(GrColorSpaceXform::XformKey(fColorXform.get()));
}
bool GrSimpleTextureEffect::onIsEqual(const GrFragmentProcessor& other) const {
    const GrSimpleTextureEffect& that = other.cast<GrSimpleTextureEffect>();
    (void)that;
    if (fImage != that.fImage) return false;
    if (fColorXform != that.fColorXform) return false;
    if (fMatrix != that.fMatrix) return false;
    return true;
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSimpleTextureEffect);
#if GR_TEST_UTILS
sk_sp<GrFragmentProcessor> GrSimpleTextureEffect::TestCreate(GrProcessorTestData* testData) {
    int texIdx = testData->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx
                                               : GrProcessorUnitTest::kAlphaTextureIdx;
    static const SkShader::TileMode kTileModes[] = {
            SkShader::kClamp_TileMode,
            SkShader::kRepeat_TileMode,
            SkShader::kMirror_TileMode,
    };
    SkShader::TileMode tileModes[] = {
            kTileModes[testData->fRandom->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
            kTileModes[testData->fRandom->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
    };
    GrSamplerParams params(tileModes, testData->fRandom->nextBool()
                                              ? GrSamplerParams::kBilerp_FilterMode
                                              : GrSamplerParams::kNone_FilterMode);

    const SkMatrix& matrix = GrTest::TestMatrix(testData->fRandom);
    sk_sp<GrColorSpaceXform> colorSpaceXform = GrTest::TestColorXform(testData->fRandom);
    return GrSimpleTextureEffect::Make(testData->textureProxy(texIdx), std::move(colorSpaceXform),
                                       matrix);
}
#endif
#endif