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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 ContentLayerChromium_h
#define ContentLayerChromium_h
#if USE(ACCELERATED_COMPOSITING)
#include "LayerChromium.h"
namespace WebCore {
// A Layer that requires a GraphicsContext to render its contents.
class ContentLayerChromium : public LayerChromium {
friend class LayerRendererChromium;
public:
static PassRefPtr<ContentLayerChromium> create(GraphicsLayerChromium* owner = 0);
virtual ~ContentLayerChromium();
virtual void updateContents();
virtual void draw();
virtual bool drawsContent() { return m_owner && m_owner->drawsContent(); }
// Stores values that are shared between instances of this class that are
// associated with the same LayerRendererChromium (and hence the same GL
// context).
class SharedValues {
public:
explicit SharedValues(GraphicsContext3D*);
~SharedValues();
unsigned contentShaderProgram() const { return m_contentShaderProgram; }
int shaderSamplerLocation() const { return m_shaderSamplerLocation; }
int shaderMatrixLocation() const { return m_shaderMatrixLocation; }
int shaderAlphaLocation() const { return m_shaderAlphaLocation; }
int initialized() const { return m_initialized; }
private:
GraphicsContext3D* m_context;
unsigned m_contentShaderProgram;
int m_shaderSamplerLocation;
int m_shaderMatrixLocation;
int m_shaderAlphaLocation;
int m_initialized;
};
protected:
ContentLayerChromium(GraphicsLayerChromium* owner);
void updateTextureRect(void* pixels, const IntSize& bitmapSize, const IntSize& requiredTextureSize,
const IntRect& updateRect, unsigned textureId);
unsigned m_contentsTexture;
IntSize m_allocatedTextureSize;
bool m_skipsDraw;
};
}
#endif // USE(ACCELERATED_COMPOSITING)
#endif
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