2 * Copyright (C) 2011 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "core/html/canvas/WebGLContextGroup.h"
30 #include "core/html/canvas/WebGLSharedObject.h"
34 PassRefPtr<WebGLContextGroup> WebGLContextGroup::create()
36 RefPtr<WebGLContextGroup> contextGroup = adoptRef(new WebGLContextGroup());
37 return contextGroup.release();
40 WebGLContextGroup::WebGLContextGroup()
44 WebGLContextGroup::~WebGLContextGroup()
46 detachAndRemoveAllObjects();
49 blink::WebGraphicsContext3D* WebGLContextGroup::getAWebGraphicsContext3D()
51 ASSERT(!m_contexts.isEmpty());
52 HashSet<WebGLRenderingContextBase*>::iterator it = m_contexts.begin();
53 return (*it)->webContext();
56 void WebGLContextGroup::addContext(WebGLRenderingContextBase* context)
58 m_contexts.add(context);
61 void WebGLContextGroup::removeContext(WebGLRenderingContextBase* context)
63 // We must call detachAndRemoveAllObjects before removing the last context.
64 if (m_contexts.size() == 1 && m_contexts.contains(context))
65 detachAndRemoveAllObjects();
67 m_contexts.remove(context);
70 void WebGLContextGroup::removeObject(WebGLSharedObject* object)
72 m_groupObjects.remove(object);
75 void WebGLContextGroup::addObject(WebGLSharedObject* object)
77 m_groupObjects.add(object);
80 void WebGLContextGroup::detachAndRemoveAllObjects()
82 while (!m_groupObjects.isEmpty()) {
83 HashSet<WebGLSharedObject*>::iterator it = m_groupObjects.begin();
84 (*it)->detachContextGroup();
88 void WebGLContextGroup::loseContextGroup(WebGLRenderingContextBase::LostContextMode mode, WebGLRenderingContextBase::AutoRecoveryMethod autoRecoveryMethod)
90 // Detach must happen before loseContextImpl, which destroys the GraphicsContext3D
91 // and prevents groupObjects from being properly deleted.
92 detachAndRemoveAllObjects();
94 for (HashSet<WebGLRenderingContextBase*>::iterator it = m_contexts.begin(); it != m_contexts.end(); ++it)
95 (*it)->loseContextImpl(mode, autoRecoveryMethod);