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1 | |
2 /* | |
3 * Copyright 2012 Google Inc. | |
4 * | |
5 * Use of this source code is governed by a BSD-style license that can be | |
6 * found in the LICENSE file. | |
7 */ | |
8 | |
9 #ifndef GrBufferObj_DEFINED | |
10 #define GrBufferObj_DEFINED | |
11 | |
12 #include "GrFakeRefObj.h" | |
13 #include "../GrGLDefines.h" | |
14 | |
15 //////////////////////////////////////////////////////////////////////////////// | |
16 class GrBufferObj : public GrFakeRefObj { | |
17 GR_DEFINE_CREATOR(GrBufferObj); | |
18 | |
19 public: | |
20 GrBufferObj() | |
21 : GrFakeRefObj() | |
22 , fDataPtr(nullptr) | |
23 , fMapped(false) | |
24 , fBound(false) | |
25 , fSize(0) | |
26 , fUsage(GR_GL_STATIC_DRAW) { | |
27 } | |
28 virtual ~GrBufferObj() { | |
29 delete[] fDataPtr; | |
30 } | |
31 | |
32 void access() { | |
33 // cannot access the buffer if it is currently mapped | |
34 GrAlwaysAssert(!fMapped); | |
35 } | |
36 | |
37 void setMapped(GrGLintptr offset, GrGLsizeiptr length) { | |
38 fMapped = true; | |
39 fMappedOffset = offset; | |
40 fMappedLength = length; | |
41 } | |
42 void resetMapped() { fMapped = false; } | |
43 bool getMapped() const { return fMapped; } | |
44 GrGLintptr getMappedOffset() const { return fMappedOffset; } | |
45 GrGLsizeiptr getMappedLength() const { return fMappedLength; } | |
46 | |
47 void setBound() { fBound = true; } | |
48 void resetBound() { fBound = false; } | |
49 bool getBound() const { return fBound; } | |
50 | |
51 void allocate(GrGLsizeiptr size, const GrGLchar *dataPtr); | |
52 GrGLsizeiptr getSize() const { return fSize; } | |
53 GrGLchar *getDataPtr() { return fDataPtr; } | |
54 | |
55 void setUsage(GrGLint usage) { fUsage = usage; } | |
56 GrGLint getUsage() const { return fUsage; } | |
57 | |
58 void deleteAction() override; | |
59 | |
60 protected: | |
61 private: | |
62 | |
63 GrGLchar* fDataPtr; | |
64 bool fMapped; // is the buffer object mapped via "glMapBuffer[
Range]"? | |
65 GrGLintptr fMappedOffset; // the offset of the buffer range that is mapped | |
66 GrGLsizeiptr fMappedLength; // the size of the buffer range that is mapped | |
67 bool fBound; // is the buffer object bound via "glBindBuffer"
? | |
68 GrGLsizeiptr fSize; // size in bytes | |
69 GrGLint fUsage; // one of: GL_STREAM_DRAW, | |
70 // GL_STATIC_DRAW, | |
71 // GL_DYNAMIC_DRAW | |
72 | |
73 typedef GrFakeRefObj INHERITED; | |
74 }; | |
75 | |
76 #endif // GrBufferObj_DEFINED | |
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