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::TemporaryChange<> 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