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