1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkColorMatrixFilter_DEFINED 9 #define SkColorMatrixFilter_DEFINED 10 11 #include "SkColorFilter.h" 12 13 class SkColorMatrixFilterRowMajor255 : public SkColorFilter { 14 public: 15 SkColorMatrixFilterRowMajor255() {} 16 explicit SkColorMatrixFilterRowMajor255(const SkScalar array[20]); 17 18 /** Creates a color matrix filter that returns the same value in all four channels. */ 19 static sk_sp<SkColorFilter> MakeSingleChannelOutput(const SkScalar row[5]); 20 21 uint32_t getFlags() const override; 22 bool asColorMatrix(SkScalar matrix[20]) const override; 23 sk_sp<SkColorFilter> makeComposed(sk_sp<SkColorFilter>) const override; 24 25 #if SK_SUPPORT_GPU 26 std::unique_ptr<GrFragmentProcessor> asFragmentProcessor( 27 GrContext*, const GrColorSpaceInfo&) const override; 28 #endif 29 30 SK_TO_STRING_OVERRIDE() 31 32 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorMatrixFilter) 33 34 protected: 35 void flatten(SkWriteBuffer&) const override; 36 37 private: 38 void onAppendStages(SkRasterPipeline*, SkColorSpace*, SkArenaAlloc*, 39 bool shaderIsOpaque) const override; 40 41 SkScalar fMatrix[20]; 42 float fTranspose[20]; // for Sk4s 43 uint32_t fFlags; 44 45 void initState(); 46 47 typedef SkColorFilter INHERITED; 48 }; 49 50 #endif 51
