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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
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 | |
8 #ifndef SkBitmapProcShader_DEFINED | 7 #ifndef SkBitmapProcShader_DEFINED |
9 #define SkBitmapProcShader_DEFINED | 8 #define SkBitmapProcShader_DEFINED |
10 | 9 |
11 #include "SkShader.h" | 10 #include "SkShader.h" |
12 #include "SkSmallAllocator.h" | 11 #include "SkSmallAllocator.h" |
13 | 12 |
14 struct SkBitmapProcState; | 13 struct SkBitmapProcState; |
15 class SkBitmapProvider; | 14 class SkBitmapProvider; |
16 | 15 |
17 class SkBitmapProcShader : public SkShader { | 16 class SkBitmapProcLegacyShader : public SkShader { |
f(malita)
2016/08/02 13:10:27
This is now just a collection of static private he
| |
18 public: | |
19 SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty, | |
20 const SkMatrix* localMatrix = nullptr); | |
21 | |
22 bool isOpaque() const override; | |
23 | |
24 // SkBitmapProcShader stores bitmap coordinates in a 16bit buffer, as it | |
25 // communicates between its matrix-proc and its sampler-proc. Until we can | |
26 // widen that, we have to reject bitmaps that are larger. | |
27 static bool BitmapIsTooBig(const SkBitmap&); | |
28 | |
29 SK_TO_STRING_OVERRIDE() | |
30 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapProcShader) | |
31 | |
32 #if SK_SUPPORT_GPU | |
33 sk_sp<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const overri de; | |
34 #endif | |
35 | |
36 protected: | |
37 void flatten(SkWriteBuffer&) const override; | |
38 size_t onContextSize(const ContextRec& rec) const override { | |
39 return ContextSize(rec, fRawBitmap.info()); | |
40 } | |
41 Context* onCreateContext(const ContextRec&, void* storage) const override; | |
42 bool onIsABitmap(SkBitmap*, SkMatrix*, TileMode*) const override; | |
43 | |
44 SkBitmap fRawBitmap; | |
45 uint8_t fTileModeX, fTileModeY; | |
46 | |
47 private: | 17 private: |
48 friend class SkImageShader; | 18 friend class SkImageShader; |
49 | 19 |
50 static size_t ContextSize(const ContextRec&, const SkImageInfo& srcInfo); | 20 static size_t ContextSize(const ContextRec&, const SkImageInfo& srcInfo); |
51 static Context* MakeContext(const SkShader&, TileMode tmx, TileMode tmy, | 21 static Context* MakeContext(const SkShader&, TileMode tmx, TileMode tmy, |
52 const SkBitmapProvider&, const ContextRec&, void * storage); | 22 const SkBitmapProvider&, const ContextRec&, void * storage); |
53 | 23 |
54 typedef SkShader INHERITED; | 24 typedef SkShader INHERITED; |
55 }; | 25 }; |
56 | 26 |
57 enum {kSkBlitterContextSize = 3332}; | 27 enum {kSkBlitterContextSize = 3332}; |
58 | 28 |
59 // Commonly used allocator. It currently is only used to allocate up to 3 object s. The total | 29 // Commonly used allocator. It currently is only used to allocate up to 3 object s. The total |
60 // bytes requested is calculated using one of our large shaders, its context siz e plus the size of | 30 // bytes requested is calculated using one of our large shaders, its context siz e plus the size of |
61 // an Sk3DBlitter in SkDraw.cpp | 31 // an Sk3DBlitter in SkDraw.cpp |
62 // Note that some contexts may contain other contexts (e.g. for compose shaders) , but we've not | 32 // Note that some contexts may contain other contexts (e.g. for compose shaders) , but we've not |
63 // yet found a situation where the size below isn't big enough. | 33 // yet found a situation where the size below isn't big enough. |
64 typedef SkSmallAllocator<3, kSkBlitterContextSize> SkTBlitterAllocator; | 34 typedef SkSmallAllocator<3, kSkBlitterContextSize> SkTBlitterAllocator; |
65 | 35 |
66 // If alloc is non-nullptr, it will be used to allocate the returned SkShader, a nd MUST outlive | 36 // If alloc is non-nullptr, it will be used to allocate the returned SkShader, a nd MUST outlive |
67 // the SkShader. | 37 // the SkShader. |
68 sk_sp<SkShader> SkMakeBitmapShader(const SkBitmap& src, SkShader::TileMode, SkSh ader::TileMode, | 38 sk_sp<SkShader> SkMakeBitmapShader(const SkBitmap& src, SkShader::TileMode, SkSh ader::TileMode, |
69 const SkMatrix* localMatrix, SkTBlitterAlloca tor* alloc); | 39 const SkMatrix* localMatrix, SkTBlitterAlloca tor* alloc); |
70 | 40 |
71 #endif | 41 #endif |
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