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,
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19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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26 #ifndef WebGLContextGroup_h
27 #define WebGLContextGroup_h
29 #include "core/html/canvas/WebGLRenderingContextBase.h"
30 #include "wtf/HashSet.h"
31 #include "wtf/PassRefPtr.h"
32 #include "wtf/RefCounted.h"
35 class WebGraphicsContext3D;
41 class WebGLSharedObject;
42 class WebGLRenderingContextBase;
44 typedef int ExceptionCode;
46 class WebGLContextGroup FINAL : public RefCounted<WebGLContextGroup> {
48 static PassRefPtr<WebGLContextGroup> create();
51 void addContext(WebGLRenderingContextBase*);
52 void removeContext(WebGLRenderingContextBase*);
54 void addObject(WebGLSharedObject*);
55 void removeObject(WebGLSharedObject*);
57 blink::WebGraphicsContext3D* getAWebGraphicsContext3D();
59 void loseContextGroup(WebGLRenderingContextBase::LostContextMode);
62 friend class WebGLObject;
66 void detachAndRemoveAllObjects();
68 // FIXME: Oilpan: this object is not on the heap, but keeps bare
69 // pointers to garbage collected objects in the two hash sets
70 // below. The objects are responsible for managing their
71 // registration with WebGLContextGroup, and vice versa, the
72 // WebGLContextGroup takes care of detaching the group objects if
73 // the set of WebGLRenderingContextBase contexts becomes empty.
74 HashSet<WebGLRenderingContextBase*> m_contexts;
75 HashSet<WebGLSharedObject*> m_groupObjects;
80 #endif // WebGLContextGroup_h