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1 /*
2  * Copyright (C) 2010, 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 INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  */
24 
25 #ifndef LayerTexture_h
26 #define LayerTexture_h
27 
28 #include "IntSize.h"
29 #include "TextureManager.h"
30 
31 #include <wtf/FastAllocBase.h>
32 #include <wtf/Noncopyable.h>
33 #include <wtf/PassOwnPtr.h>
34 #include <wtf/RefPtr.h>
35 
36 namespace WebCore {
37 
38 class GraphicsContext3D;
39 class TextureManager;
40 
41 class LayerTexture {
42     WTF_MAKE_NONCOPYABLE(LayerTexture); WTF_MAKE_FAST_ALLOCATED;
43 public:
create(GraphicsContext3D * context,TextureManager * manager)44     static PassOwnPtr<LayerTexture> create(GraphicsContext3D* context, TextureManager* manager)
45     {
46         return adoptPtr(new LayerTexture(context, manager));
47     }
48     ~LayerTexture();
49 
50     bool isValid(const IntSize&, unsigned format);
51     bool reserve(const IntSize&, unsigned format);
isReserved()52     bool isReserved()
53     {
54         ASSERT(m_textureManager);
55         return m_textureManager->isProtected(m_token);
56     }
57 
58     void bindTexture();
59     void framebufferTexture2D();
60 
61 private:
62     LayerTexture(GraphicsContext3D*, TextureManager*);
63 
64     RefPtr<GraphicsContext3D> m_context;
65     TextureManager* m_textureManager;
66     TextureToken m_token;
67     IntSize m_size;
68     unsigned m_format;
69     unsigned m_textureId;
70 };
71 
72 }
73 
74 #endif
75 
76