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// Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qrenderstateset.h"
#include "qrenderstateset_p.h"
#include <Qt3DRender/qrenderstate.h>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
using namespace Qt3DCore;
QRenderStateSetPrivate::QRenderStateSetPrivate()
: QFrameGraphNodePrivate()
{
}
/*!
\class Qt3DRender::QRenderStateSet
\inmodule Qt3DRender
\since 5.5
\brief The QRenderStateSet \l {QFrameGraphNode}{FrameGraph} node offers a way of
specifying a set of QRenderState objects to be applied during the execution
of a framegraph branch.
States set on a QRenderStateSet are set globally, contrary to the per-material
states that can be set on a QRenderPass. By default, an empty
QRenderStateSet will result in all render states being disabled when
executed. Adding a QRenderState state explicitly enables that render
state at runtime.
The RenderStateSet is enabled when added to the active frame graph:
\code
// using namespace Qt3DRender;
Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
QRenderSettings *renderSettings = new QRenderSettings();
QViewport *viewport = new QViewport();
QCameraSelector *cameraSelector = new QCameraSelector(viewport);
QClearBuffers *clearBuffers = new QClearBuffers(cameraSelector);
clearBuffers->setBuffers(QClearBuffers::ColorDepthBuffer);
QRenderStateSet *renderStateSet = new QRenderStateSet(cameraSelector);
QCullFace *cullFace = new QCullFace(renderStateSet);
cullFace->setMode(QCullFace::Front);
renderStateSet->addRenderState(cullFace);
renderSettings->setActiveFrameGraph(viewport);
rootEntity->addComponent(renderSettings);
\endcode
\sa QRenderState, QRenderPass
*/
/*!
\qmltype RenderStateSet
\inqmlmodule Qt3D.Render
\since 5.5
\inherits FrameGraphNode
\nativetype Qt3DRender::QRenderStateSet
\brief The RenderStateSet \l {FrameGraphNode}{FrameGraph} node offers a way of
specifying a set of RenderState objects to be applied during the execution
of a framegraph branch.
States set on a RenderStateSet are set globally, contrary to the per-material
states that can be set on a RenderPass. By default, an empty
RenderStateSet will result in all render states being disabled when
executed. Adding a RenderState state explicitly enables that render
state at runtime.
The RenderStateSet is enabled when added to the active frame graph:
\qml
import Qt3D.Core 2.0
import Qt3D.Render 2.0
import Qt3D.Extras 2.0
Entity {
id: rootNode
components: [
RenderSettings {
activeFrameGraph: RenderSurfaceSelector {
ClearBuffers {
buffers : ClearBuffers.ColorDepthBuffer
CameraSelector {
camera: Camera {
position: Qt.vector3d(10, 0, 0)
viewCenter: Qt.vector3d(0, 0, 0)
}
RenderStateSet {
renderStates: [
CullFace { mode: CullFace.Back }
]
}
}
}
}
}
]
Entity {
id: sphereEntity
components: [
GeometryRenderer { view: SphereMesh {} },
PhongMaterial {}
]
}
}
\endqml
\sa RenderState, RenderPass
*/
/*!
\qmlproperty list<RenderState> RenderStateSet::renderStates
Holds the list of RenderState objects used by the RenderStateSet.
*/
QRenderStateSet::QRenderStateSet(QNode *parent)
: QFrameGraphNode(*new QRenderStateSetPrivate, parent)
{
}
/*! \internal */
QRenderStateSet::~QRenderStateSet()
{
}
/*!
Adds a new QRenderState \a state to the QRenderStateSet instance.
\note Not setting any QRenderState state on a QRenderStateSet instance
implies all the render states will be disabled at render time.
*/
void QRenderStateSet::addRenderState(QRenderState *state)
{
Q_ASSERT(state);
Q_D(QRenderStateSet);
if (!d->m_renderStates.contains(state)) {
d->m_renderStates.append(state);
// Ensures proper bookkeeping
d->registerDestructionHelper(state, &QRenderStateSet::removeRenderState, d->m_renderStates);
if (!state->parent())
state->setParent(this);
d->update();
}
}
/*!
Removes the QRenderState \a state from the QRenderStateSet instance.
*/
void QRenderStateSet::removeRenderState(QRenderState *state)
{
Q_ASSERT(state);
Q_D(QRenderStateSet);
if (!d->m_renderStates.removeOne(state))
return;
d->update();
// Remove bookkeeping connection
d->unregisterDestructionHelper(state);
}
/*!
Returns the list of QRenderState objects that compose the QRenderStateSet instance.
*/
QList<QRenderState *> QRenderStateSet::renderStates() const
{
Q_D(const QRenderStateSet);
return d->m_renderStates;
}
} // namespace Qt3DRender
QT_END_NAMESPACE
#include "moc_qrenderstateset.cpp"
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