src/gpu/effects/generated/GrConstColorProcessor.h

/*
 * 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 GrConstColorProcessor.fp; do not modify.
 **************************************************************************************************/
#ifndef GrConstColorProcessor_DEFINED
#define GrConstColorProcessor_DEFINED
#include "include/core/SkTypes.h"

#include "src/gpu/GrCoordTransform.h"
#include "src/gpu/GrFragmentProcessor.h"
class GrConstColorProcessor : public GrFragmentProcessor {
public:
    enum class InputMode { kIgnore = 0, kLast = 2, kModulateA = 2, kModulateRGBA = 1 };

    static const int kInputModeCnt = (int)InputMode::kLast + 1;

    static OptimizationFlags OptFlags(const SkPMColor4f& color, InputMode mode) {
        OptimizationFlags flags = kConstantOutputForConstantInput_OptimizationFlag;
        if (mode != InputMode::kIgnore) {
            flags |= kCompatibleWithCoverageAsAlpha_OptimizationFlag;
        }
        if (color.isOpaque()) {
            flags |= kPreservesOpaqueInput_OptimizationFlag;
        }
        return flags;
    }

    SkPMColor4f constantOutputForConstantInput(const SkPMColor4f& input) const override {
        switch (mode) {
            case InputMode::kIgnore:
                return color;
            case InputMode::kModulateA:
                return color * input.fA;
            case InputMode::kModulateRGBA:
                return color * input;
        }
        SK_ABORT("Unexpected mode");
        return SK_PMColor4fTRANSPARENT;
    }
    static std::unique_ptr<GrFragmentProcessor> Make(SkPMColor4f color, InputMode mode) {
        return std::unique_ptr<GrFragmentProcessor>(new GrConstColorProcessor(color, mode));
    }
    GrConstColorProcessor(const GrConstColorProcessor& src);
    std::unique_ptr<GrFragmentProcessor> clone() const override;
    const char* name() const override { return "ConstColorProcessor"; }
    SkPMColor4f color;
    InputMode mode;

private:
    GrConstColorProcessor(SkPMColor4f color, InputMode mode)
            : INHERITED(kGrConstColorProcessor_ClassID, (OptimizationFlags)OptFlags(color, mode))
            , color(color)
            , mode(mode) {}
    GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
    void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override;
    bool onIsEqual(const GrFragmentProcessor&) const override;
    GR_DECLARE_FRAGMENT_PROCESSOR_TEST
    typedef GrFragmentProcessor INHERITED;
};
#endif