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 SK_API 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 sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*, SkColorSpace*) const override; 27 #endif 28 29 SK_TO_STRING_OVERRIDE() 30 31 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorMatrixFilter) 32 33 protected: 34 void flatten(SkWriteBuffer&) const override; 35 36 private: 37 void onAppendStages(SkRasterPipeline*, SkColorSpace*, SkArenaAlloc*, 38 bool shaderIsOpaque) const override; 39 40 SkScalar fMatrix[20]; 41 float fTranspose[20]; // for Sk4s 42 uint32_t fFlags; 43 44 void initState(); 45 46 typedef SkColorFilter INHERITED; 47 }; 48 49 #endif 50
