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1 /* | |
2 * Copyright 2014 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef GrFlushToGpuDrawTarget_DEFINED | |
9 #define GrFlushToGpuDrawTarget_DEFINED | |
10 | |
11 #include "GrDrawTarget.h" | |
12 | |
13 class GrIndexBufferAllocPool; | |
14 class GrVertexBufferAllocPool; | |
15 class GrGpu; | |
16 | |
17 /** | |
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 | |
20 * preallocated vertex/index buffers in the order the requests are made (assumin
g the requests fit | |
21 * in the preallocated buffers). | |
22 */ | |
23 class GrFlushToGpuDrawTarget : public GrClipTarget { | |
24 public: | |
25 GrFlushToGpuDrawTarget(GrGpu*, GrVertexBufferAllocPool*,GrIndexBufferAllocPo
ol*); | |
26 | |
27 /** | |
28 * Empties the draw buffer of any queued up draws. This must not be called w
hile inside an | |
29 * unbalanced pushGeometrySource(). | |
30 */ | |
31 void reset(); | |
32 | |
33 /** | |
34 * This plays any queued up draws to its GrGpu target. It also resets this o
bject (i.e. flushing | |
35 * is destructive). This buffer must not have an active reserved vertex or i
ndex source. Any | |
36 * reserved geometry on the target will be finalized because it's geometry s
ource will be pushed | |
37 * before flushing and popped afterwards. | |
38 */ | |
39 void flush(); | |
40 | |
41 protected: | |
42 GrGpu* getGpu() { return fGpu; } | |
43 const GrGpu* getGpu() const{ return fGpu; } | |
44 | |
45 GrVertexBufferAllocPool* getVertexAllocPool() { return fVertexPool; } | |
46 GrIndexBufferAllocPool* getIndexAllocPool() { return fIndexPool; } | |
47 | |
48 private: | |
49 virtual void onReset() = 0; | |
50 | |
51 virtual void onFlush() = 0; | |
52 | |
53 bool onCanCopySurface(const GrSurface* dst, | |
54 const GrSurface* src, | |
55 const SkIRect& srcRect, | |
56 const SkIPoint& dstPoint) override; | |
57 bool onInitCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) ove
rride; | |
58 | |
59 SkAutoTUnref<GrGpu> fGpu; | |
60 GrVertexBufferAllocPool* fVertexPool; | |
61 GrIndexBufferAllocPool* fIndexPool; | |
62 bool fFlushing; | |
63 | |
64 typedef GrClipTarget INHERITED; | |
65 }; | |
66 | |
67 #endif | |
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