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++ // Copyright (C) 2014 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 "qpolygonoffset.h"
++ #include "qpolygonoffset_p.h"
++
++ QT_BEGIN_NAMESPACE
++
++ namespace Qt3DRender {
++
++ /*!
++ \class Qt3DRender::QPolygonOffset
++ \brief The QPolygonOffset class sets the scale and steps to calculate depth
++ values for polygon offsets.
++ \since 5.7
++ \inmodule Qt3DRender
++ \ingroup renderstates
++
++ A QPolygonOffset class adds an offset to the fragment depth value prior to
++ depth test and depth write. The offset can be used to avoid z-fighting when
++ rendering polygons with very close depth values such as decals.
++ */
++
++ /*!
++ \qmltype PolygonOffset
++ \brief The PolygonOffset type sets the scale and steps to calculate depth
++ values for polygon offsets.
++ \since 5.7
++ \inqmlmodule Qt3D.Render
++ \ingroup renderstates
++ \inherits RenderState
++ \nativetype Qt3DRender::QPolygonOffset
++
++ A PolygonOffset type adds an offset to the fragment depth value prior to
++ depth test and depth write. The offset can be used to avoid z-fighting when
++ rendering polygons with very close depth values such as decals.
++ */
++
++ /*!
++ \qmlproperty real PolygonOffset::scaleFactor
++ Holds the scale factor used to create a variable depth offset for
++ each polygon. Default value is 0.
++ */
++
++ /*!
++ \qmlproperty real PolygonOffset::depthSteps
++ Holds the units that create constant depth offsets. Default value is 0.
++ */
++
++ /*!
++ \property Qt3DRender::QPolygonOffset::scaleFactor
++ Holds the scale factor used to create a variable depth offset for
++ each polygon. Default value is 0.
++ */
++
++ /*!
++ \property Qt3DRender::QPolygonOffset::depthSteps
++ Holds the units that create constant depth offsets. Default value is 0.
++ */
++
++ /*!
++ The constructor creates a new QPolygonOffset::QPolygonOffset instance
++ with the specified \a parent
++ */
++ QPolygonOffset::QPolygonOffset(QNode *parent)
++ : QRenderState(*new QPolygonOffsetPrivate, parent)
++ {
++ }
++
++ /*! \internal */
++ QPolygonOffset::~QPolygonOffset()
++ {
++ }
++
++ float QPolygonOffset::scaleFactor() const
++ {
++ Q_D(const QPolygonOffset);
++ return d->m_scaleFactor;
++ }
++
++ void QPolygonOffset::setScaleFactor(float scaleFactor)
++ {
++ Q_D(QPolygonOffset);
++ if (d->m_scaleFactor != scaleFactor) {
++ d->m_scaleFactor = scaleFactor;
++ emit scaleFactorChanged(d->m_scaleFactor);
++ }
++ }
++
++ float QPolygonOffset::depthSteps() const
++ {
++ Q_D(const QPolygonOffset);
++ return d->m_depthSteps;
++ }
++
++ void QPolygonOffset::setDepthSteps(float depthSteps)
++ {
++ Q_D(QPolygonOffset);
++ if (d->m_depthSteps != depthSteps) {
++ d->m_depthSteps = depthSteps;
++ emit depthStepsChanged(d->m_depthSteps);
++ }
++ }
++
++ } // namespace Qt3DRender
++
++ QT_END_NAMESPACE
++
++ #include "moc_qpolygonoffset.cpp"