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#ifndef WebGLSharedObject_h
27#define WebGLSharedObject_h
28
29#include "WebGLObject.h"
30
31namespace WebCore {
32
33class GraphicsContext3D;
34class WebGLContextGroup;
35class WebGLRenderingContext;
36
37// WebGLSharedObject the base class for objects that can be shared by multiple
38// WebGLRenderingContexts.
39class WebGLSharedObject : public WebGLObject {
40public:
41    virtual ~WebGLSharedObject();
42
43    WebGLContextGroup* contextGroup() const { return m_contextGroup; }
44
45    virtual bool isBuffer() const { return false; }
46    virtual bool isFramebuffer() const { return false; }
47    virtual bool isProgram() const { return false; }
48    virtual bool isRenderbuffer() const { return false; }
49    virtual bool isShader() const { return false; }
50    virtual bool isTexture() const { return false; }
51
52    virtual bool validate(const WebGLContextGroup* contextGroup, const WebGLRenderingContext*) const override
53    {
54        return contextGroup == m_contextGroup;
55    }
56
57    void detachContextGroup();
58
59protected:
60    WebGLSharedObject(WebGLRenderingContext*);
61
62    virtual bool hasGroupOrContext() const override
63    {
64        return m_contextGroup;
65    }
66
67    virtual GraphicsContext3D* getAGraphicsContext3D() const override;
68
69private:
70    WebGLContextGroup* m_contextGroup;
71};
72
73} // namespace WebCore
74
75#endif // WebGLSharedObject_h
76