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/*
* Copyright (C) 2012 Intel Corporation. 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 INC. 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 INC. 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.
*/
#ifndef GLPlatformContext_h
#define GLPlatformContext_h
#if USE(ACCELERATED_COMPOSITING)
#include "GLDefs.h"
#include "GLPlatformSurface.h"
#include "GraphicsContext3D.h"
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
// Encapsulates an OpenGL context, hiding platform specific management.
namespace WebCore {
class GLPlatformContext {
WTF_MAKE_NONCOPYABLE(GLPlatformContext);
public:
// From http://www.khronos.org/registry/gles/extensions/EXT/EXT_robustness.txt
enum PlatformContextReset {
PLATFORMCONTEXT_NO_ERROR = 0x0000,
PLATFORMCONTEXT_GUILTY_CONTEXT_RESET = 0x8253,
PLATFORMCONTEXT_INNOCENT_CONTEXT_RESET = 0x8254,
PLATFORMCONTEXT_UNKNOWN_CONTEXT_RESET = 0x8255,
};
static PassOwnPtr<GLPlatformContext> createContext(GraphicsContext3D::RenderStyle);
static bool supportsGLExtension(const String&);
#if USE(EGL)
static bool supportsEGLExtension(EGLDisplay, const String&);
#endif
#if USE(GLX)
static bool supportsGLXExtension(Display*, const String&);
#endif
virtual ~GLPlatformContext();
virtual bool initialize(GLPlatformSurface*, PlatformContext = 0);
// Makes this and surface as current context and drawable.
// Calling this function with no surface is same as calling releaseCurrent.
// Does nothing if this is already current Context.
bool makeCurrent(GLPlatformSurface* = 0);
// Sets Current Context and Drawable as Null.
// Doesn't have any effect if this is not the current Context.
void releaseCurrent();
virtual PlatformContext handle() const;
virtual bool isCurrentContext() const;
bool isValid() const;
// Destroys any GL resources associated with this context.
virtual void destroy();
static GLPlatformContext* getCurrent();
protected:
GLPlatformContext();
virtual bool platformMakeCurrent(GLPlatformSurface*);
virtual void platformReleaseCurrent();
PlatformContext m_contextHandle;
bool m_resetLostContext;
bool m_contextLost;
};
} // namespace WebCore
#endif
#endif // GLNativeContext_H
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