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/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "TextureMapperBackingStore.h"
#include "GraphicsLayer.h"
#include "ImageBuffer.h"
#include "TextureMapper.h"
#if USE(GRAPHICS_SURFACE)
#include "GraphicsSurface.h"
#include "TextureMapperGL.h"
#endif
namespace WebCore {
unsigned TextureMapperBackingStore::calculateExposedTileEdges(const FloatRect& totalRect, const FloatRect& tileRect)
{
unsigned exposedEdges = TextureMapper::NoEdges;
if (!tileRect.x())
exposedEdges |= TextureMapper::LeftEdge;
if (!tileRect.y())
exposedEdges |= TextureMapper::TopEdge;
if (tileRect.width() + tileRect.x() >= totalRect.width())
exposedEdges |= TextureMapper::RightEdge;
if (tileRect.height() + tileRect.y() >= totalRect.height())
exposedEdges |= TextureMapper::BottomEdge;
return exposedEdges;
}
}
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