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/*
* Copyright (C) 2012, 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 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 TextureCopier_h
#define TextureCopier_h
#include "GraphicsContext3D.h"
#include "ProgramBinding.h"
#include "ShaderChromium.h"
namespace WebKit {
class WebGraphicsContext3D;
}
namespace WebCore {
class IntSize;
class TextureCopier {
public:
// Copy the base level contents of |sourceTextureId| to |destTextureId|. Both texture objects
// must be complete and have a base level of |size| dimensions. The color formats do not need
// to match, but |destTextureId| must have a renderable format.
virtual void copyTexture(unsigned sourceTextureId, unsigned destTextureId, const IntSize&) = 0;
virtual void flush() = 0;
protected:
virtual ~TextureCopier() { }
};
#if USE(ACCELERATED_COMPOSITING)
class AcceleratedTextureCopier : public TextureCopier {
WTF_MAKE_NONCOPYABLE(AcceleratedTextureCopier);
public:
static PassOwnPtr<AcceleratedTextureCopier> create(WebKit::WebGraphicsContext3D* context, bool usingBindUniforms)
{
return adoptPtr(new AcceleratedTextureCopier(context, usingBindUniforms));
}
virtual ~AcceleratedTextureCopier();
virtual void copyTexture(unsigned sourceTextureId, unsigned destTextureId, const IntSize&);
virtual void flush();
protected:
AcceleratedTextureCopier(WebKit::WebGraphicsContext3D*, bool usingBindUniforms);
private:
typedef ProgramBinding<VertexShaderPosTexIdentity, FragmentShaderRGBATex> BlitProgram;
WebKit::WebGraphicsContext3D* m_context;
Platform3DObject m_fbo;
Platform3DObject m_positionBuffer;
OwnPtr<BlitProgram> m_blitProgram;
bool m_usingBindUniforms;
};
#endif // USE(ACCELERATED_COMPOSITING)
}
#endif
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