src/gpu/effects/GrCircleEffect.h

/*
 * 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 GrCircleEffect.fp; do not modify.
 **************************************************************************************************/
#ifndef GrCircleEffect_DEFINED
#define GrCircleEffect_DEFINED
#include "SkTypes.h"
#include "GrFragmentProcessor.h"
#include "GrCoordTransform.h"
class GrCircleEffect : public GrFragmentProcessor {
public:
    const GrClipEdgeType& edgeType() const { return fEdgeType; }
    const SkPoint& center() const { return fCenter; }
    float radius() const { return fRadius; }

    static std::unique_ptr<GrFragmentProcessor> Make(GrClipEdgeType edgeType, SkPoint center,
                                                     float radius) {
        // A radius below half causes the implicit insetting done by this processor to become
        // inverted. We could handle this case by making the processor code more complicated.
        if (radius < .5f && GrProcessorEdgeTypeIsInverseFill(edgeType)) {
            return nullptr;
        }
        return std::unique_ptr<GrFragmentProcessor>(new GrCircleEffect(edgeType, center, radius));
    }
    GrCircleEffect(const GrCircleEffect& src);
    std::unique_ptr<GrFragmentProcessor> clone() const override;
    const char* name() const override { return "CircleEffect"; }

private:
    GrCircleEffect(GrClipEdgeType edgeType, SkPoint center, float radius)
            : INHERITED(kGrCircleEffect_ClassID,
                        (OptimizationFlags)kCompatibleWithCoverageAsAlpha_OptimizationFlag)
            , fEdgeType(edgeType)
            , fCenter(center)
            , fRadius(radius) {}
    GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
    void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override;
    bool onIsEqual(const GrFragmentProcessor&) const override;
    GR_DECLARE_FRAGMENT_PROCESSOR_TEST
    GrClipEdgeType fEdgeType;
    SkPoint fCenter;
    float fRadius;
    typedef GrFragmentProcessor INHERITED;
};
#endif