1/*
2 * Copyright (C) 2012 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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WebSharedGraphicsContext3D_h
27#define WebSharedGraphicsContext3D_h
28
29#include "WebCommon.h"
30
31class GrContext;
32
33namespace WebKit {
34
35class WebGraphicsContext3D;
36
37class WebSharedGraphicsContext3D {
38public:
39 // Returns a context usable from the main thread. If the context is lost or has never been created, this will attempt to create a new context.
40 // The returned pointer is only valid until the next call to mainThreadContext().
41 WEBKIT_EXPORT static WebGraphicsContext3D* mainThreadContext();
42
43 // Returns a ganesh context associated with the main thread shared context. The ganesh context has the same lifetime as the main thread shared
44 // WebGraphicsContext3D.
45 WEBKIT_EXPORT static GrContext* mainThreadGrContext();
46
47 // Attempts to create a context usable from the compositor thread. Must be called from the main (WebKit) thread. Returns false
48 // if a context could not be created.
49 WEBKIT_EXPORT static bool createCompositorThreadContext();
50
51 // Can be called from any thread.
52 WEBKIT_EXPORT static bool haveCompositorThreadContext();
53
54 // Returns a context usable from the compositor thread, if there is one. The context must be used only from the compositor thread.
55 // The returned context is valid until the next call to createCompositorThreadContext().
56 // If this context becomes lost or unusable, the caller should call createCompositorThreadContext() on the main thread and
57 // then use the newly created context from the compositor thread.
58 WEBKIT_EXPORT static WebGraphicsContext3D* compositorThreadContext();
59
60 // Returns a ganesh context associated with the compositor thread shared context. The ganesh context has the same lifetime as the compositor thread
61 // shared WebGraphicsContext3D.
62 WEBKIT_EXPORT static GrContext* compositorThreadGrContext();
63};
64
65}
66
67#endif // WebSharedGraphicsContext3D_h