| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkLinearGradient_DEFINED |
| #define SkLinearGradient_DEFINED |
| |
| #include "SkGradientShaderPriv.h" |
| #include "SkNx.h" |
| |
| struct Sk4fStorage { |
| float fArray[4]; |
| |
| operator Sk4f() const { |
| return Sk4f::Load(fArray); |
| } |
| |
| Sk4fStorage& operator=(const Sk4f& src) { |
| src.store(fArray); |
| return *this; |
| } |
| }; |
| |
| class SkLinearGradient : public SkGradientShaderBase { |
| public: |
| SkLinearGradient(const SkPoint pts[2], const Descriptor&); |
| |
| class LinearGradientContext : public SkGradientShaderBase::GradientShaderBaseContext { |
| public: |
| LinearGradientContext(const SkLinearGradient&, const ContextRec&); |
| |
| void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; |
| |
| struct Rec { |
| Sk4fStorage fColor; |
| float fPos; |
| float fPosScale; |
| }; |
| private: |
| SkTDArray<Rec> fRecs; |
| bool fApplyAlphaAfterInterp; |
| |
| void shade4_clamp(int x, int y, SkPMColor dstC[], int count); |
| template <bool, bool> void shade4_dx_clamp(SkPMColor dstC[], int count, float fx, float dx, |
| float invDx, const float dither[2]); |
| |
| typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; |
| }; |
| |
| GradientType asAGradient(GradientInfo* info) const override; |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override; |
| #endif |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLinearGradient) |
| |
| protected: |
| SkLinearGradient(SkReadBuffer& buffer); |
| void flatten(SkWriteBuffer& buffer) const override; |
| Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override; |
| Context* onMakeBurstPipelineContext(const ContextRec&, SkArenaAlloc*) const override; |
| |
| void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline, |
| SkRasterPipeline* postPipeline) const final; |
| |
| |
| sk_sp<SkShader> onMakeColorSpace(SkColorSpaceXformer* xformer) const override; |
| |
| private: |
| class LinearGradient4fContext; |
| |
| friend class SkGradientShader; |
| typedef SkGradientShaderBase INHERITED; |
| const SkPoint fStart; |
| const SkPoint fEnd; |
| }; |
| |
| #endif |