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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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