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

Issue 1105263002: Remove vertex/index buffer factilities from GrDrawTarget. (Closed) Base URL: https://skia.googlesource.com/skia.git@josh
Patch Set: rebase Created 5 years, 7 months ago
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1 /* 1 /*
2 * Copyright 2014 Google Inc. 2 * Copyright 2014 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 GrFlushToGpuDrawTarget_DEFINED 8 #ifndef GrFlushToGpuDrawTarget_DEFINED
9 #define GrFlushToGpuDrawTarget_DEFINED 9 #define GrFlushToGpuDrawTarget_DEFINED
10 10
11 #include "GrDrawTarget.h" 11 #include "GrDrawTarget.h"
12 12
13 class GrIndexBufferAllocPool; 13 class GrIndexBufferAllocPool;
14 class GrVertexBufferAllocPool; 14 class GrVertexBufferAllocPool;
15 class GrGpu; 15 class GrGpu;
16 16
17 /** 17 /**
18 * Base class for draw targets that accumulate index and vertex data in buffers for deferred. 18 * Base class for draw targets that accumulate index and vertex data in buffers for deferred.
19 * When draw target clients reserve geometry this subclass will place that geome try into 19 * When draw target clients reserve geometry this subclass will place that geome try into
20 * preallocated vertex/index buffers in the order the requests are made (assumin g the requests fit 20 * preallocated vertex/index buffers in the order the requests are made (assumin g the requests fit
21 * in the preallocated buffers). 21 * in the preallocated buffers).
22 */ 22 */
23 class GrFlushToGpuDrawTarget : public GrClipTarget { 23 class GrFlushToGpuDrawTarget : public GrClipTarget {
24 public: 24 public:
25 GrFlushToGpuDrawTarget(GrGpu*, GrVertexBufferAllocPool*,GrIndexBufferAllocPo ol*); 25 GrFlushToGpuDrawTarget(GrGpu*, GrVertexBufferAllocPool*,GrIndexBufferAllocPo ol*);
26 26
27 ~GrFlushToGpuDrawTarget() override;
28
29 /** 27 /**
30 * Empties the draw buffer of any queued up draws. This must not be called w hile inside an 28 * Empties the draw buffer of any queued up draws. This must not be called w hile inside an
31 * unbalanced pushGeometrySource(). 29 * unbalanced pushGeometrySource().
32 */ 30 */
33 void reset(); 31 void reset();
34 32
35 /** 33 /**
36 * This plays any queued up draws to its GrGpu target. It also resets this o bject (i.e. flushing 34 * This plays any queued up draws to its GrGpu target. It also resets this o bject (i.e. flushing
37 * is destructive). This buffer must not have an active reserved vertex or i ndex source. Any 35 * is destructive). This buffer must not have an active reserved vertex or i ndex source. Any
38 * reserved geometry on the target will be finalized because it's geometry s ource will be pushed 36 * reserved geometry on the target will be finalized because it's geometry s ource will be pushed
39 * before flushing and popped afterwards. 37 * before flushing and popped afterwards.
40 */ 38 */
41 void flush(); 39 void flush();
42 40
43 bool geometryHints(size_t vertexStride, int* vertexCount, int* indexCount) c onst override;
44
45 protected: 41 protected:
46 GrGpu* getGpu() { return fGpu; } 42 GrGpu* getGpu() { return fGpu; }
47 const GrGpu* getGpu() const{ return fGpu; } 43 const GrGpu* getGpu() const{ return fGpu; }
48 44
49 GrVertexBufferAllocPool* getVertexAllocPool() { return fVertexPool; } 45 GrVertexBufferAllocPool* getVertexAllocPool() { return fVertexPool; }
50 GrIndexBufferAllocPool* getIndexAllocPool() { return fIndexPool; } 46 GrIndexBufferAllocPool* getIndexAllocPool() { return fIndexPool; }
51 47
52 // TODO all of this goes away when batch is everywhere
53 enum {
54 kGeoPoolStatePreAllocCnt = 4,
55 };
56
57 struct GeometryPoolState {
58 const GrVertexBuffer* fPoolVertexBuffer;
59 int fPoolStartVertex;
60 const GrIndexBuffer* fPoolIndexBuffer;
61 int fPoolStartIndex;
62 // caller may conservatively over reserve vertices / indices.
63 // we release unused space back to allocator if possible
64 // can only do this if there isn't an intervening pushGeometrySource()
65 size_t fUsedPoolVertexBytes;
66 size_t fUsedPoolIndexBytes;
67 };
68
69 typedef SkSTArray<kGeoPoolStatePreAllocCnt, GeometryPoolState> GeoPoolStateS tack;
70 const GeoPoolStateStack& getGeoPoolStateStack() const { return fGeoPoolState Stack; }
71
72 void willReserveVertexAndIndexSpace(int vertexCount,
73 size_t vertexStride,
74 int indexCount) override;
75
76 private: 48 private:
77 virtual void onReset() = 0; 49 virtual void onReset() = 0;
78 50
79 virtual void onFlush() = 0; 51 virtual void onFlush() = 0;
80 52
81 void setDrawBuffers(DrawInfo*, size_t stride) override;
82 bool onReserveVertexSpace(size_t vertexSize, int vertexCount, void** vertice s) override;
83 bool onReserveIndexSpace(int indexCount, void** indices) override;
84 void releaseReservedVertexSpace() override;
85 void releaseReservedIndexSpace() override;
86 void geometrySourceWillPush() override;
87 void geometrySourceWillPop(const GeometrySrcState& restoredState) override;
88 bool onCanCopySurface(const GrSurface* dst, 53 bool onCanCopySurface(const GrSurface* dst,
89 const GrSurface* src, 54 const GrSurface* src,
90 const SkIRect& srcRect, 55 const SkIRect& srcRect,
91 const SkIPoint& dstPoint) override; 56 const SkIPoint& dstPoint) override;
92 bool onInitCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) ove rride; 57 bool onInitCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) ove rride;
93 58
94 GeoPoolStateStack fGeoPoolStateStack;
95 SkAutoTUnref<GrGpu> fGpu; 59 SkAutoTUnref<GrGpu> fGpu;
96 GrVertexBufferAllocPool* fVertexPool; 60 GrVertexBufferAllocPool* fVertexPool;
97 GrIndexBufferAllocPool* fIndexPool; 61 GrIndexBufferAllocPool* fIndexPool;
98 bool fFlushing; 62 bool fFlushing;
99 63
100 typedef GrClipTarget INHERITED; 64 typedef GrClipTarget INHERITED;
101 }; 65 };
102 66
103 #endif 67 #endif
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