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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 USE(ACCELERATED_COMPOSITING)
#include "RenderSurfaceChromium.h"
#include "GraphicsContext3D.h"
#include "LayerRendererChromium.h"
namespace WebCore {
RenderSurfaceChromium::RenderSurfaceChromium(LayerChromium* owningLayer)
: m_owningLayer(owningLayer)
, m_contentsTextureId(0)
{
}
RenderSurfaceChromium::~RenderSurfaceChromium()
{
cleanupResources();
}
void RenderSurfaceChromium::cleanupResources()
{
if (!m_contentsTextureId)
return;
ASSERT(layerRenderer());
layerRenderer()->deleteLayerTexture(m_contentsTextureId);
m_contentsTextureId = 0;
m_allocatedTextureSize = IntSize();
}
LayerRendererChromium* RenderSurfaceChromium::layerRenderer()
{
ASSERT(m_owningLayer);
return m_owningLayer->layerRenderer();
}
void RenderSurfaceChromium::prepareContentsTexture()
{
ASSERT(m_owningLayer);
if (!m_contentsTextureId) {
m_contentsTextureId = layerRenderer()->createLayerTexture();
ASSERT(m_contentsTextureId);
m_allocatedTextureSize = IntSize();
}
IntSize requiredSize(m_contentRect.width(), m_contentRect.height());
if (m_allocatedTextureSize != requiredSize) {
GraphicsContext3D* context = m_owningLayer->layerRenderer()->context();
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_contentsTextureId));
GLC(context, context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA,
requiredSize.width(), requiredSize.height(), 0, GraphicsContext3D::RGBA,
GraphicsContext3D::UNSIGNED_BYTE, 0));
m_allocatedTextureSize = requiredSize;
}
}
}
#endif // USE(ACCELERATED_COMPOSITING)
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