/* * Copyright (C) 2013 Apple Inc. All rights reserved. * Copyright (C) 2011 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include "GraphicsTypesGL.h" #if ENABLE(GRAPHICS_CONTEXT_GL) && (USE(OPENGL) || USE(OPENGL_ES)) #include <wtf/Noncopyable.h> namespace WebCore { // TemporaryOpenGLSetting<> is useful for temporarily disabling (or enabling) a particular OpenGL // feature with a particular scope. A TemporaryOpenGLSetting<> object returns the flag to its original // value upon destruction, making it an alternative to checking, clearing, and resetting each flag // at all of a block's exit points. // // Based on WTF::SetForScope<> class TemporaryOpenGLSetting { WTF_MAKE_NONCOPYABLE(TemporaryOpenGLSetting); public: TemporaryOpenGLSetting(GCGLenum capability, GCGLenum scopedState); ~TemporaryOpenGLSetting(); private: const GCGLenum m_capability; const GCGLenum m_scopedState; GCGLenum m_originalState; }; } using WebCore::TemporaryOpenGLSetting; #endif