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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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 DrawingBuffer_h
#define DrawingBuffer_h
#include "GraphicsLayer.h"
#include "IntSize.h"
#include <wtf/Noncopyable.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
namespace WebCore {
class SharedGraphicsContext3D;
struct DrawingBufferInternal;
// Manages a rendering target (framebuffer + attachment) for a canvas. Can publish its rendering
// results to a PlatformLayer for compositing.
class DrawingBuffer : public Noncopyable {
public:
static PassOwnPtr<DrawingBuffer> create(SharedGraphicsContext3D*, const IntSize&);
~DrawingBuffer();
void reset(const IntSize&);
void bind();
IntSize size() const { return m_size; }
#if USE(ACCELERATED_COMPOSITING)
PlatformLayer* platformLayer();
void publishToPlatformLayer();
#endif
unsigned getRenderingResultsAsTexture();
class WillPublishCallback : public Noncopyable {
public:
virtual void willPublish() = 0;
};
void setWillPublishCallback(PassOwnPtr<WillPublishCallback>);
private:
DrawingBuffer(SharedGraphicsContext3D*, const IntSize&, unsigned framebuffer);
SharedGraphicsContext3D* m_context;
IntSize m_size;
unsigned m_framebuffer;
OwnPtr<WillPublishCallback> m_callback;
OwnPtr<DrawingBufferInternal> m_internal;
};
} // namespace WebCore
#endif // DrawingBuffer_h
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