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Side by Side Diff: src/gpu/GrBatchAtlas.h

Issue 1050633002: Revert of BitmapTextBatch and BitmapTextBlob (Closed) Base URL: https://skia.googlesource.com/skia.git@dfpr_take_2
Patch Set: Created 5 years, 8 months ago
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1 /* 1 /*
2 * Copyright 2015 Google Inc. 2 * Copyright 2015 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 GrBatchAtlas_DEFINED 8 #ifndef GrBatchAtlas_DEFINED
9 #define GrBatchAtlas_DEFINED 9 #define GrBatchAtlas_DEFINED
10 10
11 #include "GrTexture.h" 11 #include "GrTexture.h"
12 #include "SkPoint.h" 12 #include "SkPoint.h"
13 #include "SkTDArray.h" 13 #include "SkTDArray.h"
14 #include "SkTInternalLList.h" 14 #include "SkTInternalLList.h"
15 15
16 class BatchPlot; 16 class BatchPlot;
17 class GrBatchTarget; 17 class GrBatchTarget;
18 class GrRectanizer; 18 class GrRectanizer;
19 19
20 typedef SkTInternalLList<BatchPlot> GrBatchPlotList; 20 typedef SkTInternalLList<BatchPlot> GrBatchPlotList;
21 21
22 class GrBatchAtlas { 22 class GrBatchAtlas {
23 public: 23 public:
24 typedef uint64_t BatchToken; 24 typedef uint64_t BatchToken;
25 // An AtlasID is an opaque handle which callers can use to determine if the atlas contains 25 // An AtlasID is an opaque handle which callers can use to determine if the atlas contains
26 // a specific piece of data 26 // a specific piece of data
27 typedef uint32_t AtlasID; 27 typedef uint32_t AtlasID;
28 static const uint32_t kInvalidAtlasID = 0;
29 static const uint64_t kInvalidAtlasGeneration = 0;
30 28
31 // A function pointer for use as a callback during eviction. Whenever GrBat chAtlas evicts a 29 // A function pointer for use as a callback during eviction. Whenever GrBat chAtlas evicts a
32 // specific AtlasID, it will call all of the registered listeners so they ca n optionally process 30 // specific AtlasID, it will call all of the registered listeners so they ca n optionally process
33 // the eviction 31 // the eviction
34 typedef void (*EvictionFunc)(GrBatchAtlas::AtlasID, void*); 32 typedef void (*EvictionFunc)(GrBatchAtlas::AtlasID, void*);
35 33
36 GrBatchAtlas(GrTexture*, int numPlotsX, int numPlotsY); 34 GrBatchAtlas(GrTexture*, int numPlotsX, int numPlotsY);
37 ~GrBatchAtlas(); 35 ~GrBatchAtlas();
38 36
39 // Adds a width x height subimage to the atlas. Upon success it returns 37 // Adds a width x height subimage to the atlas. Upon success it returns
40 // the containing GrPlot and absolute location in the backing texture. 38 // the containing GrPlot and absolute location in the backing texture.
41 // NULL is returned if the subimage cannot fit in the atlas. 39 // NULL is returned if the subimage cannot fit in the atlas.
42 // If provided, the image data will be written to the CPU-side backing bitma p. 40 // If provided, the image data will be written to the CPU-side backing bitma p.
43 bool addToAtlas(AtlasID*, GrBatchTarget*, int width, int height, const void* image, 41 bool addToAtlas(AtlasID*, GrBatchTarget*, int width, int height, const void* image,
44 SkIPoint16* loc); 42 SkIPoint16* loc);
45 43
46 GrTexture* getTexture() const { return fTexture; } 44 GrTexture* getTexture() const { return fTexture; }
47 45
48 uint64_t atlasGeneration() const { return fAtlasGeneration; }
49 bool hasID(AtlasID id); 46 bool hasID(AtlasID id);
50 void setLastRefToken(AtlasID id, BatchToken batchToken); 47 void setLastRefToken(AtlasID id, BatchToken batchToken);
51 void registerEvictionCallback(EvictionFunc func, void* userData) { 48 void registerEvictionCallback(EvictionFunc func, void* userData) {
52 EvictionData* data = fEvictionCallbacks.append(); 49 EvictionData* data = fEvictionCallbacks.append();
53 data->fFunc = func; 50 data->fFunc = func;
54 data->fData = userData; 51 data->fData = userData;
55 } 52 }
56 53
57 private: 54 private:
58 int getIndexFromID(AtlasID id) { 55 int getIndexFromID(AtlasID id) {
59 return id & 0xffff; 56 return id & 0xffff;
60 } 57 }
61 58
62 int getGenerationFromID(AtlasID id) { 59 int getGenerationFromID(AtlasID id) {
63 return (id >> 16) & 0xffff; 60 return (id >> 16) & 0xffff;
64 } 61 }
65 62
66 inline void updatePlot(GrBatchTarget*, AtlasID*, BatchPlot*); 63 inline void updatePlot(GrBatchTarget*, AtlasID*, BatchPlot*);
67 64
68 inline void makeMRU(BatchPlot* plot); 65 inline void makeMRU(BatchPlot* plot);
69 66
70 inline void processEviction(AtlasID); 67 inline void processEviction(AtlasID);
71 68
72 GrTexture* fTexture; 69 GrTexture* fTexture;
73 int fNumPlotsX; 70 int fNumPlotsX;
74 int fNumPlotsY; 71 int fNumPlotsY;
75 int fPlotWidth; 72 int fPlotWidth;
76 int fPlotHeight; 73 int fPlotHeight;
77 size_t fBPP; 74 size_t fBPP;
78 uint64_t fAtlasGeneration;
79 75
80 struct EvictionData { 76 struct EvictionData {
81 EvictionFunc fFunc; 77 EvictionFunc fFunc;
82 void* fData; 78 void* fData;
83 }; 79 };
84 80
85 SkTDArray<EvictionData> fEvictionCallbacks; 81 SkTDArray<EvictionData> fEvictionCallbacks;
86 // allocated array of GrBatchPlots 82 // allocated array of GrBatchPlots
87 SkAutoTUnref<BatchPlot>* fPlotArray; 83 SkAutoTUnref<BatchPlot>* fPlotArray;
88 // LRU list of GrPlots (MRU at head - LRU at tail) 84 // LRU list of GrPlots (MRU at head - LRU at tail)
89 GrBatchPlotList fPlotList; 85 GrBatchPlotList fPlotList;
90 }; 86 };
91 87
92 #endif 88 #endif
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