1/*
2 * Copyright (C) 2011 Google 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#if ENABLE(WEBGL)
29
30#include "OESVertexArrayObject.h"
31
32#include "Extensions3D.h"
33#include "WebGLRenderingContext.h"
34#include "WebGLVertexArrayObjectOES.h"
35
36namespace WebCore {
37
38OESVertexArrayObject::OESVertexArrayObject(WebGLRenderingContext* context)
39    : WebGLExtension()
40    , m_context(context)
41{
42}
43
44OESVertexArrayObject::~OESVertexArrayObject()
45{
46}
47
48WebGLExtension::ExtensionName OESVertexArrayObject::getName() const
49{
50    return OESVertexArrayObjectName;
51}
52
53PassRefPtr<OESVertexArrayObject> OESVertexArrayObject::create(WebGLRenderingContext* context)
54{
55    return adoptRef(new OESVertexArrayObject(context));
56}
57
58PassRefPtr<WebGLVertexArrayObjectOES> OESVertexArrayObject::createVertexArrayOES()
59{
60    if (m_context->isContextLost())
61        return 0;
62
63    RefPtr<WebGLVertexArrayObjectOES> o = WebGLVertexArrayObjectOES::create(m_context, WebGLVertexArrayObjectOES::VaoTypeUser);
64    m_context->addObject(o.get());
65    return o.release();
66}
67
68void OESVertexArrayObject::deleteVertexArrayOES(WebGLVertexArrayObjectOES* arrayObject)
69{
70    if (!arrayObject || m_context->isContextLost())
71        return;
72
73    arrayObject->deleteObject();
74}
75
76GC3Dboolean OESVertexArrayObject::isVertexArrayOES(WebGLVertexArrayObjectOES* arrayObject)
77{
78    if (!arrayObject || m_context->isContextLost())
79        return 0;
80
81    if (!arrayObject->hasEverBeenBound())
82        return 0;
83
84    Extensions3D* extensions = m_context->graphicsContext3D()->getExtensions();
85    return extensions->isVertexArrayOES(arrayObject->object());
86}
87
88void OESVertexArrayObject::bindVertexArrayOES(WebGLVertexArrayObjectOES* arrayObject, ExceptionCode& ec)
89{
90    UNUSED_PARAM(ec);
91    if (m_context->isContextLost())
92        return;
93
94    if (arrayObject && arrayObject->context() != m_context) {
95        m_context->graphicsContext3D()->synthesizeGLError(GraphicsContext3D::INVALID_OPERATION);
96        return;
97    }
98
99    Extensions3D* extensions = m_context->graphicsContext3D()->getExtensions();
100    if (arrayObject && !arrayObject->isDefaultObject() && arrayObject->object()) {
101        extensions->bindVertexArrayOES(arrayObject->object());
102
103        arrayObject->setHasEverBeenBound();
104        m_context->setBoundVertexArrayObject(arrayObject);
105    } else {
106        extensions->bindVertexArrayOES(0);
107
108        m_context->setBoundVertexArrayObject(0);
109    }
110
111    m_context->cleanupAfterGraphicsCall(false);
112}
113
114} // namespace WebCore
115
116#endif // ENABLE(WEBGL)
117