1//
2// Copyright (c) 2013 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// This class contains prototypes for representing GLES 3 Vertex Array Objects:
7//
8//   The buffer objects that are to be used by the vertex stage of the GL are collected
9//   together to form a vertex array object. All state related to the definition of data used
10//   by the vertex processor is encapsulated in a vertex array object.
11//
12
13#ifndef LIBGLESV2_VERTEXARRAY_H_
14#define LIBGLESV2_VERTEXARRAY_H_
15
16#include "common/RefCountObject.h"
17#include "libGLESv2/constants.h"
18#include "libGLESv2/VertexAttribute.h"
19
20#include <vector>
21
22namespace rx
23{
24class Renderer;
25class VertexArrayImpl;
26}
27
28namespace gl
29{
30class Buffer;
31
32class VertexArray
33{
34  public:
35    VertexArray(rx::VertexArrayImpl *impl, GLuint id, size_t maxAttribs);
36    ~VertexArray();
37
38    GLuint id() const;
39
40    const VertexAttribute& getVertexAttribute(size_t attributeIndex) const;
41    void detachBuffer(GLuint bufferName);
42    void setVertexAttribDivisor(GLuint index, GLuint divisor);
43    void enableAttribute(unsigned int attributeIndex, bool enabledState);
44    void setAttributeState(unsigned int attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
45                           bool normalized, bool pureInteger, GLsizei stride, const void *pointer);
46
47    const VertexAttribute* getVertexAttributes() const { return mVertexAttributes.data(); }
48    Buffer *getElementArrayBuffer() const { return mElementArrayBuffer.get(); }
49    void setElementArrayBuffer(Buffer *buffer);
50    GLuint getElementArrayBufferId() const { return mElementArrayBuffer.id(); }
51    size_t getMaxAttribs() const { return mVertexAttributes.size(); }
52
53  private:
54    GLuint mId;
55
56    rx::VertexArrayImpl *mVertexArray;
57    std::vector<VertexAttribute> mVertexAttributes;
58    BindingPointer<Buffer> mElementArrayBuffer;
59};
60
61}
62
63#endif // LIBGLESV2_VERTEXARRAY_H_
64