| /* |
| * 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 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 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 // USE(OPENGL) || USE(OPENGL_ES) |