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/*
* Copyright (C) 2010, 2011 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 program 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 program; 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 "QtSGTileNode.h"
#include <QtQuick/QSGEngine>
#include <QtQuick/QSGFlatColorMaterial>
#include <QtQuick/QSGTexture>
namespace WebKit {
QtSGTileNode::QtSGTileNode(QSGEngine* engine)
: m_engine(engine)
, m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
, m_textureMaterialsCreated(false)
{
setFlags(OwnsMaterial | OwnsOpaqueMaterial);
setGeometry(&m_geometry);
setMaterial(new QSGFlatColorMaterial);
setOpaqueMaterial(new QSGFlatColorMaterial);
}
void QtSGTileNode::setBackBuffer(const QImage& backBuffer, const QRectF& sourceRect, const QRectF& targetRect)
{
m_backBufferTexture.reset(m_engine->createTextureFromImage(backBuffer));
m_backBufferTargetRect = targetRect;
m_backBufferSourceRect = m_backBufferTexture->convertToNormalizedSourceRect(sourceRect);
// Force the texture upload.
m_backBufferTexture->bind();
}
void QtSGTileNode::swapBuffersIfNeeded()
{
if (!m_backBufferTexture)
return;
if (!m_textureMaterialsCreated) {
setMaterial(new QSGTextureMaterial);
setOpaqueMaterial(new QSGOpaqueTextureMaterial);
m_textureMaterialsCreated = true;
}
static_cast<QSGTextureMaterial*>(material())->setTexture(m_backBufferTexture.data());
static_cast<QSGOpaqueTextureMaterial*>(opaqueMaterial())->setTexture(m_backBufferTexture.data());
markDirty(DirtyMaterial);
QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_backBufferTargetRect, m_backBufferSourceRect);
markDirty(DirtyGeometry);
m_frontBufferTexture.swap(m_backBufferTexture);
m_backBufferTexture.reset();
}
}
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