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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qrendertargetselector.h"
#include "qrendertargetselector_p.h"
#include <Qt3DRender/qrendertarget.h>
#include <Qt3DRender/private/qrenderpass_p.h>
#include <Qt3DRender/qframegraphnodecreatedchange.h>
QT_BEGIN_NAMESPACE
using namespace Qt3DCore;
namespace Qt3DRender {
/*!
\class Qt3DRender::QRenderTargetSelector
\inmodule Qt3DRender
\since 5.7
\brief Provides a way of specifying a render target.
A Qt3DRender::QRenderTargetSelector is used to select active Qt3DRender::QRenderTarget
for the FrameGraph. When QRenderTargetSelector is present in the FrameGraph,
the rendering is directed into QTexture objects or draw buffers instead of the surface
specified in the Qt3DRender::QRenderSurfaceSelector. A render buffer is automatically
generated for an attachment point if drawBuffers contain attachment point that any
output in the QRenderTarget do not specify. If the drawBuffers is empty,
the renderer will default to using all the outputs in QRenderTarget.
*/
/*!
\qmltype RenderTargetSelector
\inqmlmodule Qt3D.Render
\since 5.7
\instantiates Qt3DRender::QRenderTargetSelector
\inherits FrameGraphNode
\brief Provides a way of specifying a render target.
A RenderTargetSelector is used to select active RenderTarget
for the FrameGraph. When RenderTargetSelector is present in the FrameGraph,
the rendering is directed into Texture objects or draw buffers instead of the surface
specified in the RenderSurfaceSelector.
*/
/*!
\qmlproperty list<variant> RenderTargetSelector::drawBuffers
Holds the list of draw buffers enabled for the RenderTarget.
\sa Qt3DRender::QRenderTargetOutput::AttachmentPoint
*/
QRenderTargetSelectorPrivate::QRenderTargetSelectorPrivate()
: QFrameGraphNodePrivate()
, m_target(nullptr)
{
}
/*!
Constructs QRenderTargetSelector with given \a parent.
*/
QRenderTargetSelector::QRenderTargetSelector(QNode *parent)
: QFrameGraphNode(*new QRenderTargetSelectorPrivate, parent)
{
}
/*! \internal */
QRenderTargetSelector::~QRenderTargetSelector()
{
}
/*!
\property QRenderTargetSelector::target
Holds the current render target
*/
/*! \qmlproperty RenderTarget Qt3D.Render::RenderTargetSelector::target
Holds the current render target
*/
void QRenderTargetSelector::setTarget(QRenderTarget *target)
{
Q_D(QRenderTargetSelector);
if (d->m_target != target) {
if (d->m_target)
d->unregisterDestructionHelper(d->m_target);
// For inline declaration cases
if (target != nullptr && !target->parent())
target->setParent(this);
d->m_target = target;
if (d->m_target)
d->registerDestructionHelper(d->m_target, &QRenderTargetSelector::setTarget, d->m_target);
emit targetChanged(target);
}
}
QRenderTarget *QRenderTargetSelector::target() const
{
Q_D(const QRenderTargetSelector);
return d->m_target;
}
/*!
Sets the draw \a buffers to be used. The draw buffers should be
matching the Qt3DRender::QRenderTargetOutput::AttachmentPoint
defined in the attachments of the Qt3DRender::QRenderTarget associated to the
Qt3DRender::QRenderTargetSelector instance.
\note At render time, if no draw buffer has been specified, the renderer will
default to using all the attachments' draw buffers.
*/
void QRenderTargetSelector::setOutputs(const QVector<QRenderTargetOutput::AttachmentPoint> &buffers)
{
Q_D(QRenderTargetSelector);
if (buffers != d->m_outputs) {
d->m_outputs = buffers;
d->update();
}
}
/*!
\return the list of draw buffers for the current Qt3DRender::QRenderTargetSelector instance.
*/
QVector<QRenderTargetOutput::AttachmentPoint> QRenderTargetSelector::outputs() const
{
Q_D(const QRenderTargetSelector);
return d->m_outputs;
}
/*! \internal */
QRenderTargetSelector::QRenderTargetSelector(QRenderTargetSelectorPrivate &dd, QNode *parent)
: QFrameGraphNode(dd, parent)
{
}
Qt3DCore::QNodeCreatedChangeBasePtr QRenderTargetSelector::createNodeCreationChange() const
{
auto creationChange = QFrameGraphNodeCreatedChangePtr<QRenderTargetSelectorData>::create(this);
auto &data = creationChange->data;
Q_D(const QRenderTargetSelector);
data.targetId = qIdForNode(d->m_target);
data.outputs = d->m_outputs;
return creationChange;
}
} // namespace Qt3DRender
QT_END_NAMESPACE
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