1/*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#include "core/html/canvas/WebGLBuffer.h"
29
30#include "core/html/canvas/WebGLRenderingContextBase.h"
31
32namespace blink {
33
34PassRefPtrWillBeRawPtr<WebGLBuffer> WebGLBuffer::create(WebGLRenderingContextBase* ctx)
35{
36    return adoptRefWillBeNoop(new WebGLBuffer(ctx));
37}
38
39WebGLBuffer::WebGLBuffer(WebGLRenderingContextBase* ctx)
40    : WebGLSharedObject(ctx)
41    , m_target(0)
42{
43    setObject(ctx->webContext()->createBuffer());
44}
45
46WebGLBuffer::~WebGLBuffer()
47{
48    // Delete the buffer's platform object. This object will have been
49    // detached from the WebGLContextGroup if the group object was
50    // finalized first. With Oilpan not enabled, it always will be,
51    // but with Oilpan enabled, the WebGLBuffer might end up being
52    // finalized first. In which case detachment is needed to ensure
53    // that the platform object is indeed deleted.
54    //
55    // To keep the code regular, the trivial detach()ment is always
56    // performed.
57    detachAndDeleteObject();
58}
59
60void WebGLBuffer::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject object)
61{
62      context3d->deleteBuffer(object);
63}
64
65void WebGLBuffer::setTarget(GLenum target)
66{
67    // In WebGL, a buffer is bound to one target in its lifetime
68    if (m_target)
69        return;
70    if (target == GL_ARRAY_BUFFER || target == GL_ELEMENT_ARRAY_BUFFER)
71        m_target = target;
72}
73
74}
75