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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"
////////////////////////////////////////////////////////////////////////////////
class GrBufferObj : public GrFakeRefObj {
GR_DEFINE_CREATOR(GrBufferObj);
public:
GrBufferObj()
: GrFakeRefObj()
, fDataPtr(NULL)
, fMapped(false)
, fBound(false)
, fSize(0)
, fUsage(GR_GL_STATIC_DRAW) {
}
virtual ~GrBufferObj() {
delete[] fDataPtr;
}
void access() {
// cannot access the buffer if it is currently mapped
GrAlwaysAssert(!fMapped);
}
void setMapped() { fMapped = true; }
void resetMapped() { fMapped = false; }
bool getMapped() const { return fMapped; }
void setBound() { fBound = true; }
void resetBound() { fBound = false; }
bool getBound() const { return fBound; }
void allocate(GrGLint size, const GrGLchar *dataPtr) {
GrAlwaysAssert(size >= 0);
// delete pre-existing data
delete[] fDataPtr;
fSize = size;
fDataPtr = new GrGLchar[size];
if (dataPtr) {
memcpy(fDataPtr, dataPtr, fSize);
}
// TODO: w/ no dataPtr the data is unitialized - this could be tracked
}
GrGLint getSize() const { return fSize; }
GrGLchar *getDataPtr() { return fDataPtr; }
GrGLint getUsage() const { return fUsage; }
void setUsage(GrGLint usage) { fUsage = usage; }
virtual void deleteAction() SK_OVERRIDE {
// buffers are automatically unmapped when deleted
this->resetMapped();
this->INHERITED::deleteAction();
}
protected:
private:
GrGLchar* fDataPtr;
bool fMapped; // is the buffer object mapped via "glMapBuffer"?
bool fBound; // is the buffer object bound via "glBindBuffer"?
GrGLint 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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