src/gpu/effects/GrLumaColorFilterEffect.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 GrLumaColorFilterEffect.fp; do not modify.
 **************************************************************************************************/
#ifndef GrLumaColorFilterEffect_DEFINED
#define GrLumaColorFilterEffect_DEFINED
#include "SkTypes.h"
#include "GrFragmentProcessor.h"
#include "GrCoordTransform.h"
class GrLumaColorFilterEffect : public GrFragmentProcessor {
public:
#include "SkColorData.h"

    GrColor4f constantOutputForConstantInput(GrColor4f input) const override {
        float luma = SK_ITU_BT709_LUM_COEFF_R * input.fRGBA[0] +
                     SK_ITU_BT709_LUM_COEFF_G * input.fRGBA[1] +
                     SK_ITU_BT709_LUM_COEFF_B * input.fRGBA[2];
        return GrColor4f(0, 0, 0, luma);
    }
    static std::unique_ptr<GrFragmentProcessor> Make() {
        return std::unique_ptr<GrFragmentProcessor>(new GrLumaColorFilterEffect());
    }
    GrLumaColorFilterEffect(const GrLumaColorFilterEffect& src);
    std::unique_ptr<GrFragmentProcessor> clone() const override;
    const char* name() const override { return "LumaColorFilterEffect"; }

private:
    GrLumaColorFilterEffect()
            : INHERITED(kGrLumaColorFilterEffect_ClassID, kNone_OptimizationFlags) {}
    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