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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkColorMatrixFilter_DEFINED
#define SkColorMatrixFilter_DEFINED
#include "SkFlattenable.h"
#include "SkColorFilter.h"
class SkColorMatrixFilterRowMajor255 : public SkColorFilter {
public:
SkColorMatrixFilterRowMajor255() {}
explicit SkColorMatrixFilterRowMajor255(const SkScalar array[20]);
/** Creates a color matrix filter that returns the same value in all four channels. */
static sk_sp<SkColorFilter> MakeSingleChannelOutput(const SkScalar row[5]);
uint32_t getFlags() const override;
bool asColorMatrix(SkScalar matrix[20]) const override;
sk_sp<SkColorFilter> onMakeComposed(sk_sp<SkColorFilter>) const override;
#if SK_SUPPORT_GPU
std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(
GrContext*, const GrColorSpaceInfo&) const override;
#endif
Factory getFactory() const override { return CreateProc; }
protected:
void flatten(SkWriteBuffer&) const override;
private:
void onAppendStages(SkRasterPipeline*, SkColorSpace*, SkArenaAlloc*,
bool shaderIsOpaque) const override;
static sk_sp<SkFlattenable> CreateProc(SkReadBuffer&);
friend class SkFlattenable::PrivateInitializer;
SkScalar fMatrix[20];
float fTranspose[20]; // for Sk4s
uint32_t fFlags;
void initState();
typedef SkColorFilter INHERITED;
};
#endif
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