blob: 5526ff93f18914f4cf50dc5f0ff1a8c05b670577 [file] [log] [blame]
* Copyright 2013 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrGLBufferImpl_DEFINED
#define GrGLBufferImpl_DEFINED
#include "SkTypes.h"
#include "gl/GrGLFunctions.h"
class GrGLGpu;
* This class serves as the implementation of GrGL*Buffer classes. It was written to avoid code
* duplication in those classes.
class GrGLBufferImpl : SkNoncopyable {
struct Desc {
GrGLuint fID; // set to 0 to indicate buffer is CPU-backed and not a VBO.
size_t fSizeInBytes;
bool fDynamic;
GrGLBufferImpl(GrGLGpu*, const Desc&, GrGLenum bufferType);
~GrGLBufferImpl() {
// either release or abandon should have been called by the owner of this object.
SkASSERT(0 == fDesc.fID);
void abandon();
void release(GrGLGpu* gpu);
GrGLuint bufferID() const { return fDesc.fID; }
size_t baseOffset() const { return reinterpret_cast<size_t>(fCPUData); }
void bind(GrGLGpu* gpu) const;
void* map(GrGLGpu* gpu);
void unmap(GrGLGpu* gpu);
bool isMapped() const;
bool updateData(GrGLGpu* gpu, const void* src, size_t srcSizeInBytes);
void validate() const;
Desc fDesc;
void* fCPUData;
void* fMapPtr;
size_t fGLSizeInBytes; // In certain cases we make the size of the GL buffer object
// smaller or larger than the size in fDesc.
typedef SkNoncopyable INHERITED;