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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkLinearGradient_DEFINED | 8 #ifndef SkLinearGradient_DEFINED |
9 #define SkLinearGradient_DEFINED | 9 #define SkLinearGradient_DEFINED |
10 | 10 |
11 #include "SkGradientShaderPriv.h" | 11 #include "SkGradientShaderPriv.h" |
| 12 #include "SkNx.h" |
| 13 |
| 14 struct Sk4fStorage { |
| 15 float fArray[4]; |
| 16 |
| 17 operator Sk4f() const { |
| 18 return Sk4f::Load(fArray); |
| 19 } |
| 20 |
| 21 Sk4fStorage& operator=(const Sk4f& src) { |
| 22 src.store(fArray); |
| 23 return *this; |
| 24 } |
| 25 }; |
12 | 26 |
13 class SkLinearGradient : public SkGradientShaderBase { | 27 class SkLinearGradient : public SkGradientShaderBase { |
14 public: | 28 public: |
15 SkLinearGradient(const SkPoint pts[2], const Descriptor&); | 29 SkLinearGradient(const SkPoint pts[2], const Descriptor&); |
16 | 30 |
17 size_t contextSize() const override; | 31 size_t contextSize() const override; |
18 | 32 |
19 class LinearGradientContext : public SkGradientShaderBase::GradientShaderBas
eContext { | 33 class LinearGradientContext : public SkGradientShaderBase::GradientShaderBas
eContext { |
20 public: | 34 public: |
21 LinearGradientContext(const SkLinearGradient&, const ContextRec&); | 35 LinearGradientContext(const SkLinearGradient&, const ContextRec&); |
22 ~LinearGradientContext() {} | |
23 | 36 |
24 void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; | 37 void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; |
25 void shadeSpan16(int x, int y, uint16_t dstC[], int count) override; | 38 void shadeSpan16(int x, int y, uint16_t dstC[], int count) override; |
26 | 39 |
| 40 struct Rec { |
| 41 Sk4fStorage fColor; |
| 42 float fPos; |
| 43 float fPosScale; |
| 44 }; |
27 private: | 45 private: |
| 46 SkTDArray<Rec> fRecs; |
| 47 bool fApplyAlphaAfterInterp; |
| 48 |
| 49 void shade4_clamp(int x, int y, SkPMColor dstC[], int count); |
| 50 template <bool, bool> void shade4_dx_clamp(SkPMColor dstC[], int count,
float fx, float dx, |
| 51 float invDx, const float dith
er[2]); |
| 52 |
28 typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; | 53 typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; |
29 }; | 54 }; |
30 | 55 |
31 GradientType asAGradient(GradientInfo* info) const override; | 56 GradientType asAGradient(GradientInfo* info) const override; |
32 #if SK_SUPPORT_GPU | 57 #if SK_SUPPORT_GPU |
33 const GrFragmentProcessor* asFragmentProcessor(GrContext*, | 58 const GrFragmentProcessor* asFragmentProcessor(GrContext*, |
34 const SkMatrix& viewM, | 59 const SkMatrix& viewM, |
35 const SkMatrix*, | 60 const SkMatrix*, |
36 SkFilterQuality) const overri
de; | 61 SkFilterQuality) const overri
de; |
37 #endif | 62 #endif |
38 | 63 |
39 SK_TO_STRING_OVERRIDE() | 64 SK_TO_STRING_OVERRIDE() |
40 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLinearGradient) | 65 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLinearGradient) |
41 | 66 |
42 protected: | 67 protected: |
43 SkLinearGradient(SkReadBuffer& buffer); | 68 SkLinearGradient(SkReadBuffer& buffer); |
44 void flatten(SkWriteBuffer& buffer) const override; | 69 void flatten(SkWriteBuffer& buffer) const override; |
45 Context* onCreateContext(const ContextRec&, void* storage) const override; | 70 Context* onCreateContext(const ContextRec&, void* storage) const override; |
46 | 71 |
47 private: | 72 private: |
48 friend class SkGradientShader; | 73 friend class SkGradientShader; |
49 typedef SkGradientShaderBase INHERITED; | 74 typedef SkGradientShaderBase INHERITED; |
50 const SkPoint fStart; | 75 const SkPoint fStart; |
51 const SkPoint fEnd; | 76 const SkPoint fEnd; |
52 }; | 77 }; |
53 | 78 |
54 #endif | 79 #endif |
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