1//
2// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
3// Use of this source code is governed by a BSD-style license that can be
4// found in the LICENSE file.
5//
6
7// Buffer.h: Defines the gl::Buffer class, representing storage of vertex and/or
8// index data. Implements GL buffer objects and related functionality.
9// [OpenGL ES 2.0.24] section 2.9 page 21.
10
11#ifndef LIBGLESV2_BUFFER_H_
12#define LIBGLESV2_BUFFER_H_
13
14#include <cstddef>
15#include <vector>
16
17#define GL_APICALL
18#include <GLES2/gl2.h>
19
20#include "common/angleutils.h"
21#include "libGLESv2/RefCountObject.h"
22
23namespace gl
24{
25class StaticVertexBuffer;
26class StaticIndexBuffer;
27
28class Buffer : public RefCountObject
29{
30  public:
31    explicit Buffer(GLuint id);
32
33    virtual ~Buffer();
34
35    void bufferData(const void *data, GLsizeiptr size, GLenum usage);
36    void bufferSubData(const void *data, GLsizeiptr size, GLintptr offset);
37
38    void *data() { return mContents; }
39    size_t size() const { return mSize; }
40    GLenum usage() const { return mUsage; }
41
42    StaticVertexBuffer *getVertexBuffer();
43    StaticIndexBuffer *getIndexBuffer();
44    void invalidateStaticData();
45
46  private:
47    DISALLOW_COPY_AND_ASSIGN(Buffer);
48
49    GLubyte *mContents;
50    size_t mSize;
51    GLenum mUsage;
52
53    StaticVertexBuffer *mVertexBuffer;
54    StaticIndexBuffer *mIndexBuffer;
55};
56
57}
58
59#endif   // LIBGLESV2_BUFFER_H_
60