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Side by Side Diff: src/core/SkBitmapProcShader.h

Issue 1753903002: fission bitmapprocstate (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: use real types instead of uint8_t, fix formatting Created 4 years, 9 months ago
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1
2 /* 1 /*
3 * Copyright 2006 The Android Open Source Project 2 * Copyright 2006 The Android Open Source Project
4 * 3 *
5 * 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
6 * found in the LICENSE file. 5 * found in the LICENSE file.
7 */ 6 */
8 7
9
10 #ifndef SkBitmapProcShader_DEFINED 8 #ifndef SkBitmapProcShader_DEFINED
11 #define SkBitmapProcShader_DEFINED 9 #define SkBitmapProcShader_DEFINED
12 10
13 #include "SkShader.h" 11 #include "SkShader.h"
14 #include "SkSmallAllocator.h" 12 #include "SkSmallAllocator.h"
15 13
16 struct SkBitmapProcState; 14 struct SkBitmapProcState;
17 class SkBitmapProvider; 15 class SkBitmapProvider;
18 16
19 class SkBitmapProcShader : public SkShader { 17 class SkBitmapProcShader : public SkShader {
20 public: 18 public:
21 SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty, 19 SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty,
22 const SkMatrix* localMatrix = nullptr); 20 const SkMatrix* localMatrix = nullptr);
23 21
24 bool isOpaque() const override; 22 bool isOpaque() const override;
25 23
26 size_t contextSize(const ContextRec&) const override { return ContextSize(); } 24 size_t contextSize(const ContextRec& rec) const override { return ContextSiz e(rec); }
27 25
28 SK_TO_STRING_OVERRIDE() 26 SK_TO_STRING_OVERRIDE()
29 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapProcShader) 27 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapProcShader)
30 28
31 #if SK_SUPPORT_GPU 29 #if SK_SUPPORT_GPU
32 const GrFragmentProcessor* asFragmentProcessor(GrContext*, const SkMatrix& v iewM, 30 const GrFragmentProcessor* asFragmentProcessor(GrContext*, const SkMatrix& v iewM,
33 const SkMatrix*, SkFilterQual ity) const override; 31 const SkMatrix*, SkFilterQual ity) const override;
34 #endif 32 #endif
35 33
36 protected: 34 protected:
37 class BitmapProcShaderContext : public SkShader::Context {
38 public:
39 // The context takes ownership of the state. It will call its destructor
40 // but will NOT free the memory.
41 BitmapProcShaderContext(const SkShader&, const ContextRec&, SkBitmapProc State*);
42 ~BitmapProcShaderContext() override;
43
44 void shadeSpan(int x, int y, SkPMColor dstC[], int count) override;
45 ShadeProc asAShadeProc(void** ctx) override;
46
47 uint32_t getFlags() const override { return fFlags; }
48
49 private:
50 SkBitmapProcState* fState;
51 uint32_t fFlags;
52
53 typedef SkShader::Context INHERITED;
54 };
55
56 void flatten(SkWriteBuffer&) const override; 35 void flatten(SkWriteBuffer&) const override;
57 Context* onCreateContext(const ContextRec&, void* storage) const override; 36 Context* onCreateContext(const ContextRec&, void* storage) const override;
58 bool onIsABitmap(SkBitmap*, SkMatrix*, TileMode*) const override; 37 bool onIsABitmap(SkBitmap*, SkMatrix*, TileMode*) const override;
59 38
60 SkBitmap fRawBitmap; // experimental for RLE encoding 39 SkBitmap fRawBitmap; // experimental for RLE encoding
61 uint8_t fTileModeX, fTileModeY; 40 uint8_t fTileModeX, fTileModeY;
62 41
63 private: 42 private:
64 friend class SkImageShader; 43 friend class SkImageShader;
65 44
66 static size_t ContextSize(); 45 static size_t ContextSize(const ContextRec&);
67 static Context* MakeContext(const SkShader&, TileMode tmx, TileMode tmy, 46 static Context* MakeContext(const SkShader&, TileMode tmx, TileMode tmy,
68 const SkBitmapProvider&, const ContextRec&, void * storage); 47 const SkBitmapProvider&, const ContextRec&, void * storage);
69 48
70 typedef SkShader INHERITED; 49 typedef SkShader INHERITED;
71 }; 50 };
72 51
73 // Commonly used allocator. It currently is only used to allocate up to 3 object s. The total 52 // Commonly used allocator. It currently is only used to allocate up to 3 object s. The total
74 // bytes requested is calculated using one of our large shaders, its context siz e plus the size of 53 // bytes requested is calculated using one of our large shaders, its context siz e plus the size of
75 // an Sk3DBlitter in SkDraw.cpp 54 // an Sk3DBlitter in SkDraw.cpp
76 // Note that some contexts may contain other contexts (e.g. for compose shaders) , but we've not 55 // Note that some contexts may contain other contexts (e.g. for compose shaders) , but we've not
77 // yet found a situation where the size below isn't big enough. 56 // yet found a situation where the size below isn't big enough.
78 typedef SkSmallAllocator<3, 1500> SkTBlitterAllocator; 57 typedef SkSmallAllocator<3, 1500> SkTBlitterAllocator;
79 58
80 // If alloc is non-nullptr, it will be used to allocate the returned SkShader, a nd MUST outlive 59 // If alloc is non-nullptr, it will be used to allocate the returned SkShader, a nd MUST outlive
81 // the SkShader. 60 // the SkShader.
82 SkShader* SkCreateBitmapShader(const SkBitmap& src, SkShader::TileMode, SkShader ::TileMode, 61 SkShader* SkCreateBitmapShader(const SkBitmap& src, SkShader::TileMode, SkShader ::TileMode,
83 const SkMatrix* localMatrix, SkTBlitterAllocator* alloc); 62 const SkMatrix* localMatrix, SkTBlitterAllocator* alloc);
84 63
85 #endif 64 #endif
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