1/*
2 * Copyright (C) 2011 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 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 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 "WebGLContextGroup.h"
31
32#include "GraphicsContext3D.h"
33#include "WebGLRenderingContext.h"
34#include "WebGLSharedObject.h"
35
36namespace WebCore {
37
38PassRefPtr<WebGLContextGroup> WebGLContextGroup::create()
39{
40    RefPtr<WebGLContextGroup> contextGroup = adoptRef(new WebGLContextGroup());
41    return contextGroup.release();
42}
43
44WebGLContextGroup::WebGLContextGroup()
45{
46}
47
48WebGLContextGroup::~WebGLContextGroup()
49{
50    detachAndRemoveAllObjects();
51}
52
53GraphicsContext3D* WebGLContextGroup::getAGraphicsContext3D()
54{
55    ASSERT(!m_contexts.isEmpty());
56    HashSet<WebGLRenderingContext*>::iterator it = m_contexts.begin();
57    return (*it)->graphicsContext3D();
58}
59
60void WebGLContextGroup::addContext(WebGLRenderingContext* context)
61{
62    m_contexts.add(context);
63}
64
65void WebGLContextGroup::removeContext(WebGLRenderingContext* context)
66{
67    // We must call detachAndRemoveAllObjects before removing the last context.
68    if (m_contexts.size() == 1 && m_contexts.contains(context))
69        detachAndRemoveAllObjects();
70
71    m_contexts.remove(context);
72}
73
74void WebGLContextGroup::removeObject(WebGLSharedObject* object)
75{
76    m_groupObjects.remove(object);
77}
78
79void WebGLContextGroup::addObject(WebGLSharedObject* object)
80{
81    m_groupObjects.add(object);
82}
83
84void WebGLContextGroup::detachAndRemoveAllObjects()
85{
86    while (!m_groupObjects.isEmpty()) {
87        HashSet<WebGLSharedObject*>::iterator it = m_groupObjects.begin();
88        (*it)->detachContextGroup();
89    }
90}
91
92void WebGLContextGroup::loseContextGroup(WebGLRenderingContext::LostContextMode mode)
93{
94    for (HashSet<WebGLRenderingContext*>::iterator it = m_contexts.begin(); it != m_contexts.end(); ++it)
95        (*it)->loseContextImpl(mode);
96
97    detachAndRemoveAllObjects();
98}
99
100} // namespace WebCore
101
102#endif // ENABLE(WEBGL)
103