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 SkLinearGradient_DEFINED 9 #define SkLinearGradient_DEFINED 10 11 #include "src/shaders/gradients/SkGradientShaderPriv.h" 12 13 class SkLinearGradient : public SkGradientShaderBase { 14 public: 15 SkLinearGradient(const SkPoint pts[2], const Descriptor&); 16 17 GradientType asAGradient(GradientInfo* info) const override; 18 #if SK_SUPPORT_GPU 19 std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override; 20 #endif 21 void addToKey(SkShaderCodeDictionary*, 22 SkBackend, 23 SkPaintParamsKeyBuilder*, 24 SkUniformBlock*) const override; 25 26 protected: 27 SkLinearGradient(SkReadBuffer& buffer); 28 void flatten(SkWriteBuffer& buffer) const override; 29 #ifdef SK_ENABLE_LEGACY_SHADERCONTEXT 30 Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override; 31 #endif 32 33 void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline, 34 SkRasterPipeline* postPipeline) const final; 35 36 skvm::F32 transformT(skvm::Builder*, skvm::Uniforms*, 37 skvm::Coord coord, skvm::I32* mask) const final; 38 39 private: 40 SK_FLATTENABLE_HOOKS(SkLinearGradient) 41 42 class LinearGradient4fContext; 43 44 friend class SkGradientShader; 45 using INHERITED = SkGradientShaderBase; 46 const SkPoint fStart; 47 const SkPoint fEnd; 48 }; 49 50 #endif 51