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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qglcontextsurface_p.h"
#include <QtCore/QtDebug>
#include <QtGui/QWindow>
#include <QtGui/QOpenGLContext>
QT_BEGIN_NAMESPACE
bool QGLContextSurface::activate(QGLAbstractSurface *prevSurface)
{
Q_UNUSED(prevSurface);
Q_ASSERT_X(QOpenGLContext::currentContext() || m_context,
Q_FUNC_INFO,
"Activating GL contex surface without GL context");
if (m_context)
{
if (m_context != QOpenGLContext::currentContext())
{
m_context->makeCurrent(m_window);
}
}
else
{
m_context = QOpenGLContext::currentContext();
}
// Once we have used this context with a window remember that window and
// complain if it is used with another window, since that will affect the
// viewport and other rendering assumptions.
if (!m_window)
{
#ifndef QT_NO_DEBUG_STREAM
if (!m_context->surface() || m_context->surface()->surfaceType() == QSurface::Window)
qWarning() << "Attempt to access context without GL window";
#endif
m_window = static_cast<QWindow*>(m_context->surface());
}
#ifndef QT_NO_DEBUG_STREAM
else
{
if (m_context->surface() != m_window)
qWarning() << "Attempt to render in wrong window for context";
}
#endif
return isValid();
}
void QGLContextSurface::deactivate(QGLAbstractSurface *nextSurface)
{
Q_UNUSED(nextSurface);
}
QRect QGLContextSurface::viewportGL() const
{
QRect r;
if (m_window)
{
r = m_window->geometry();
}
#ifndef QT_NO_DEBUG_STREAM
else
{
qWarning() << "Attempt to get viewport rect with no window\n"
<< "Call activate() first";
}
#endif
return r;
}
bool QGLContextSurface::isValid() const
{
bool winOK = true;
if (m_window)
winOK = m_window->surfaceType() == QWindow::OpenGLSurface;
return isValid() && winOK;
}
QT_END_NAMESPACE
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