1 /* 2 * Copyright 2012 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 SkSweepGradient_DEFINED 9 #define SkSweepGradient_DEFINED 10 11 #include "src/shaders/gradients/SkGradientShaderPriv.h" 12 13 class SkSweepGradient final : public SkGradientShaderBase { 14 public: 15 SkSweepGradient(const SkPoint& center, SkScalar t0, SkScalar t1, const Descriptor&); 16 17 GradientType asAGradient(GradientInfo* info) const override; 18 19 #if SK_SUPPORT_GPU 20 std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override; 21 #endif 22 void addToKey(SkShaderCodeDictionary*, 23 SkBackend, 24 SkPaintParamsKeyBuilder*, 25 SkUniformBlock*) const override; 26 getTBias()27 SkScalar getTBias() const { return fTBias; } 28 getTScale()29 SkScalar getTScale() const { return fTScale; } 30 31 protected: 32 void flatten(SkWriteBuffer& buffer) const override; 33 34 void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline, 35 SkRasterPipeline* postPipeline) const override; 36 37 skvm::F32 transformT(skvm::Builder*, skvm::Uniforms*, 38 skvm::Coord coord, skvm::I32* mask) const final; 39 private: 40 SK_FLATTENABLE_HOOKS(SkSweepGradient) 41 42 const SkPoint fCenter; 43 const SkScalar fTBias, 44 fTScale; 45 46 friend class SkGradientShader; 47 using INHERITED = SkGradientShaderBase; 48 }; 49 50 #endif 51