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++ // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
++ // Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies).
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #include "qalphatest.h"
++ #include "qalphatest_p.h"
++
++ QT_BEGIN_NAMESPACE
++
++ namespace Qt3DRender {
++
++ /*!
++ \class Qt3DRender::QAlphaTest
++ \brief The QAlphaTest class specify alpha reference test.
++ \since 5.7
++ \inmodule Qt3DRender
++ \ingroup renderstates
++
++ As the OpenGL documentation explains; The alpha test discards a fragment
++ conditional on the outcome of a comparison between the incoming fragment's
++ alpha value and a constant reference value.
++ */
++
++ /*!
++ \qmltype AlphaTest
++ \brief The AlphaTest class specify alpha reference test.
++ \since 5.7
++ \inqmlmodule Qt3D.Render
++ \inherits RenderState
++ \nativetype Qt3DRender::QAlphaTest
++ \ingroup renderstates
++
++ As the OpenGL documentation explains; The alpha test discards a fragment
++ conditional on the outcome of a comparison between the incoming fragment's
++ alpha value and a constant reference value.
++ */
++
++ /*!
++ \enum Qt3DRender::QAlphaTest::AlphaFunction
++
++ Enumeration for the alpha function values
++ \value Never Never pass alpha test
++ \value Always Always pass alpha test
++ \value Less Pass alpha test if fragment alpha is less than reference value
++ \value LessOrEqual Pass alpha test if fragment alpha is less than or equal to reference value
++ \value Equal Pass alpha test if fragment alpha is equal to reference value
++ \value GreaterOrEqual Pass alpha test if fragment alpha is greater than or equal to reference value
++ \value Greater Pass alpha test if fragment alpha is greater than reference value
++ \value NotEqual Pass alpha test if fragment alpha is not equal to reference value
++ */
++
++ /*!
++ \qmlproperty enumeration AlphaTest::alphaFunction
++ Holds the alpha function used by the alpha test. Default is AlphaTest.Never.
++ \list
++ \li AlphaTest.Never
++ \li AlphaTest.Always
++ \li AlphaTest.Less
++ \li AlphaTest.LessOrEqual
++ \li AlphaTest.Equal
++ \li AlphaTest.GreaterOrEqual
++ \li AlphaTest.Greater
++ \li AlphaTest.NotEqual
++ \endlist
++ \sa Qt3DRender::QAlphaTest::AlphaFunction
++ */
++
++ /*!
++ \qmlproperty real AlphaTest::referenceValue
++ Holds the reference value used by the alpha test. Default is 0.0.
++ When set, the value is clamped between 0 and 1.
++ */
++
++ /*!
++ \property Qt3DRender::QAlphaTest::alphaFunction
++ Holds the alpha function used by the alpha test. Default is Never.
++ */
++
++ /*!
++ \property Qt3DRender::QAlphaTest::referenceValue
++ Holds the reference value used by the alpha test. Default is 0.0.
++ When set, the value is clamped between 0 and 1.
++ */
++
++
++ QAlphaTest::QAlphaTest(QNode *parent)
++ : QRenderState(*new QAlphaTestPrivate, parent)
++ {
++ }
++
++ /*! \internal */
++ QAlphaTest::~QAlphaTest()
++ {
++ }
++
++ QAlphaTest::AlphaFunction QAlphaTest::alphaFunction() const
++ {
++ Q_D(const QAlphaTest);
++ return d->m_alphaFunction;
++ }
++
++ void QAlphaTest::setAlphaFunction(QAlphaTest::AlphaFunction alphaFunction)
++ {
++ Q_D(QAlphaTest);
++ if (d->m_alphaFunction != alphaFunction) {
++ d->m_alphaFunction = alphaFunction;
++ emit alphaFunctionChanged(alphaFunction);
++ }
++ }
++
++ float QAlphaTest::referenceValue() const
++ {
++ Q_D(const QAlphaTest);
++ return d->m_referenceValue;
++ }
++
++ void QAlphaTest::setReferenceValue(float referenceValue)
++ {
++ Q_D(QAlphaTest);
++ if (d->m_referenceValue != referenceValue) {
++ d->m_referenceValue = referenceValue;
++ emit referenceValueChanged(referenceValue);
++ }
++ }
++
++ } // namespace Qt3DRender
++
++ QT_END_NAMESPACE
++
++ #include "moc_qalphatest.cpp"