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//
// Copyright (c) 2002-2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Buffer.h: Defines the gl::Buffer class, representing storage of vertex and/or
// index data. Implements GL buffer objects and related functionality.
// [OpenGL ES 2.0.24] section 2.9 page 21.
#ifndef LIBGLESV2_BUFFER_H_
#define LIBGLESV2_BUFFER_H_
#include "libGLESv2/Error.h"
#include "common/angleutils.h"
#include "common/RefCountObject.h"
#include "libGLESv2/renderer/IndexRangeCache.h"
namespace rx
{
class Renderer;
class BufferImpl;
};
namespace gl
{
class Buffer : public RefCountObject
{
public:
Buffer(rx::BufferImpl *impl, GLuint id);
virtual ~Buffer();
Error bufferData(const void *data, GLsizeiptr size, GLenum usage);
Error bufferSubData(const void *data, GLsizeiptr size, GLintptr offset);
Error copyBufferSubData(Buffer* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size);
Error mapRange(GLintptr offset, GLsizeiptr length, GLbitfield access);
Error unmap();
GLenum getUsage() const { return mUsage; }
GLint getAccessFlags() const { return mAccessFlags; }
GLboolean isMapped() const { return mMapped; }
GLvoid *getMapPointer() const { return mMapPointer; }
GLint64 getMapOffset() const { return mMapOffset; }
GLint64 getMapLength() const { return mMapLength; }
GLint64 getSize() const { return mSize; }
rx::BufferImpl *getImplementation() const { return mBuffer; }
void markTransformFeedbackUsage();
rx::IndexRangeCache *getIndexRangeCache() { return &mIndexRangeCache; }
const rx::IndexRangeCache *getIndexRangeCache() const { return &mIndexRangeCache; }
private:
DISALLOW_COPY_AND_ASSIGN(Buffer);
rx::BufferImpl *mBuffer;
GLenum mUsage;
GLint64 mSize;
GLint mAccessFlags;
GLboolean mMapped;
GLvoid *mMapPointer;
GLint64 mMapOffset;
GLint64 mMapLength;
rx::IndexRangeCache mIndexRangeCache;
};
}
#endif // LIBGLESV2_BUFFER_H_
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