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/*
* Copyright (C) 2010 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.
*/
#include "config.h"
#if ENABLE(3D_CANVAS)
#include "Extensions3DOpenGL.h"
#include "GraphicsContext3D.h"
#include <wtf/Vector.h>
#if PLATFORM(MAC)
#include <OpenGL/gl.h>
#endif
namespace WebCore {
Extensions3DOpenGL::Extensions3DOpenGL()
: m_initializedAvailableExtensions(false)
{
}
Extensions3DOpenGL::~Extensions3DOpenGL()
{
}
bool Extensions3DOpenGL::supports(const String& name)
{
// Note on support for BGRA:
//
// For OpenGL ES2.0, requires checking for
// GL_EXT_texture_format_BGRA8888 and GL_EXT_read_format_bgra.
// For desktop GL, BGRA has been supported since OpenGL 1.2.
//
// However, note that the GL ES2 extension requires the
// internalFormat to glTexImage2D() be GL_BGRA, while desktop GL
// will not accept GL_BGRA (must be GL_RGBA), so this must be
// checked on each platform. Desktop GL offers neither
// GL_EXT_texture_format_BGRA8888 or GL_EXT_read_format_bgra, so
// treat them as unsupported here.
if (!m_initializedAvailableExtensions) {
String extensionsString(reinterpret_cast<const char*>(::glGetString(GL_EXTENSIONS)));
Vector<String> availableExtensions;
extensionsString.split(" ", availableExtensions);
for (size_t i = 0; i < availableExtensions.size(); ++i)
m_availableExtensions.add(availableExtensions[i]);
m_initializedAvailableExtensions = true;
}
return m_availableExtensions.contains(name);
}
int Extensions3DOpenGL::getGraphicsResetStatusARB()
{
return GraphicsContext3D::NO_ERROR;
}
} // namespace WebCore
#endif // ENABLE(3D_CANVAS)
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