1/*
2 * Copyright (C) 2013 Apple Inc. All rights reserved.
3 * Copyright (C) 2011 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef TemporaryOpenGLSetting_h
28#define TemporaryOpenGLSetting_h
29
30#include "GraphicsTypes3D.h"
31
32#include <wtf/Noncopyable.h>
33
34namespace WebCore {
35
36// TemporaryOpenGLSetting<> is useful for temporarily disabling (or enabling) a particular OpenGL
37// feature with a particular scope. A TemporaryOpenGLSetting<> object returns the flag to its original
38// value upon destruction, making it an alternative to checking, clearing, and resetting each flag
39// at all of a block's exit points.
40//
41// Based on WTF::SetForScope<>
42
43class TemporaryOpenGLSetting {
44 WTF_MAKE_NONCOPYABLE(TemporaryOpenGLSetting);
45public:
46 TemporaryOpenGLSetting(GC3Denum capability, GC3Denum scopedState);
47 ~TemporaryOpenGLSetting();
48
49private:
50 const GC3Denum m_capability;
51 const GC3Denum m_scopedState;
52 GC3Denum m_originalState;
53};
54
55}
56
57using WebCore::TemporaryOpenGLSetting;
58
59#endif
60