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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrBufferObj_DEFINED
#define GrBufferObj_DEFINED
#include "GrFakeRefObj.h"
#include "gl/GrGLDefines.h"
////////////////////////////////////////////////////////////////////////////////
class GrBufferObj : public GrFakeRefObj {
GR_DEFINE_CREATOR(GrBufferObj)
public:
GrBufferObj()
: GrFakeRefObj()
, fDataPtr(nullptr)
, fMapped(false)
, fBound(false)
, fSize(0)
, fUsage(GR_GL_STATIC_DRAW) {
}
~GrBufferObj() override {
delete[] fDataPtr;
}
void access() {
// cannot access the buffer if it is currently mapped
GrAlwaysAssert(!fMapped);
}
void setMapped(GrGLintptr offset, GrGLsizeiptr length) {
fMapped = true;
fMappedOffset = offset;
fMappedLength = length;
}
void resetMapped() { fMapped = false; }
bool getMapped() const { return fMapped; }
GrGLintptr getMappedOffset() const { return fMappedOffset; }
GrGLsizeiptr getMappedLength() const { return fMappedLength; }
void setBound() { fBound = true; }
void resetBound() { fBound = false; }
bool getBound() const { return fBound; }
void allocate(GrGLsizeiptr size, const GrGLchar *dataPtr);
GrGLsizeiptr getSize() const { return fSize; }
GrGLchar *getDataPtr() { return fDataPtr; }
void setUsage(GrGLint usage) { fUsage = usage; }
GrGLint getUsage() const { return fUsage; }
void deleteAction() override;
protected:
private:
GrGLchar* fDataPtr;
bool fMapped; // is the buffer object mapped via "glMapBuffer[Range]"?
GrGLintptr fMappedOffset; // the offset of the buffer range that is mapped
GrGLsizeiptr fMappedLength; // the size of the buffer range that is mapped
bool fBound; // is the buffer object bound via "glBindBuffer"?
GrGLsizeiptr fSize; // size in bytes
GrGLint fUsage; // one of: GL_STREAM_DRAW,
// GL_STATIC_DRAW,
// GL_DYNAMIC_DRAW
typedef GrFakeRefObj INHERITED;
};
#endif // GrBufferObj_DEFINED
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