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<td >Qt 5.12</td><td ><a href="qt3d-index.html">Qt 3D</a></td><td ><a href="qt3d-cpp.html">C++ Classes</a></td><td >QAlphaTest</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-types">Public Types</a></li>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#public-functions">Public Functions</a></li>
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<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#static-public-members">Static Public Members</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QAlphaTest Class</h1>
<span class="small-subtitle">(<a href="qt3drender-qalphatest.html">Qt3DRender::QAlphaTest</a>)<br/></span>
<!-- $$$QAlphaTest-brief -->
<p>The <a href="qt3drender-qalphatest.html">QAlphaTest</a> class specify alpha reference test. <a href="#details">More...</a></p>
<!-- @@@QAlphaTest -->
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QAlphaTest&gt;</span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += 3drender</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign">  Qt 5.7</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Instantiated By:</td><td class="memItemRight bottomAlign"> <a href="qml-qt3d-render-alphatest.html">AlphaTest</a></td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qt3drender-qrenderstate.html">Qt3DRender::QRenderState</a></td></tr></table></div><ul>
<li><a href="qt3drender-qalphatest-members.html">List of all members, including inherited members</a></li>
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<a name="public-types"></a>
<h2 id="public-types">Public Types</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#AlphaFunction-enum">AlphaFunction</a></b> { Never, Always, Less, LessOrEqual, ..., NotEqual }</td></tr>
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<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><a href="qt3drender-qalphatest.html#alphaFunction-prop">alphaFunction</a></b> : AlphaFunction</li>
<li class="fn"><b><a href="qt3drender-qalphatest.html#referenceValue-prop">referenceValue</a></b> : float</li>
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<ul>
<li class="fn">3 properties inherited from <a href="qt3dcore-qnode.html#properties">Qt3DCore::QNode</a></li>
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<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#QAlphaTest">QAlphaTest</a></b>(Qt3DCore::QNode *<i>parent</i> = nullptr)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DRender::QAlphaTest::AlphaFunction </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#alphaFunction-prop">alphaFunction</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> float </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#referenceValue-prop">referenceValue</a></b>() const</td></tr>
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<li class="fn">13 public functions inherited from <a href="qt3dcore-qnode.html#public-functions">Qt3DCore::QNode</a></li>
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<a name="public-slots"></a>
<h2 id="public-slots">Public Slots</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#alphaFunction-prop">setAlphaFunction</a></b>(Qt3DRender::QAlphaTest::AlphaFunction <i>alphaFunction</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#referenceValue-prop">setReferenceValue</a></b>(float <i>referenceValue</i>)</td></tr>
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<li class="fn">3 public slots inherited from <a href="qt3dcore-qnode.html#public-slots">Qt3DCore::QNode</a></li>
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<a name="signals"></a>
<h2 id="signals">Signals</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#alphaFunction-prop">alphaFunctionChanged</a></b>(Qt3DRender::QAlphaTest::AlphaFunction <i>alphaFunction</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#referenceValue-prop">referenceValueChanged</a></b>(float <i>referenceValue</i>)</td></tr>
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<li class="fn">4 signals inherited from <a href="qt3dcore-qnode.html#signals">Qt3DCore::QNode</a></li>
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<h2 id="static-public-members">Static Public Members</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qalphatest.html#staticMetaObject-var">staticMetaObject</a></b></td></tr>
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<h3>Additional Inherited Members</h3>
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<li class="fn">2 protected functions inherited from <a href="qt3dcore-qnode.html#protected-functions">Qt3DCore::QNode</a></li>
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<a name="details"></a>
<!-- $$$QAlphaTest-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qt3drender-qalphatest.html">QAlphaTest</a> class specify alpha reference test.</p>
<p>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.</p>
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<!-- @@@QAlphaTest -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$AlphaFunction$$$Never$$$Always$$$Less$$$LessOrEqual$$$Equal$$$GreaterOrEqual$$$Greater$$$NotEqual -->
<h3 class="fn" id="AlphaFunction-enum"><a name="AlphaFunction-enum"></a>enum QAlphaTest::<span class="name">AlphaFunction</span></h3>
<p>Enumeration for the alpha function values</p>
<div class="table"><table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::Never</code></td><td class="topAlign tblval"><code>0x0200</code></td><td class="topAlign">Never pass alpha test</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::Always</code></td><td class="topAlign tblval"><code>0x0207</code></td><td class="topAlign">Always pass alpha test</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::Less</code></td><td class="topAlign tblval"><code>0x0201</code></td><td class="topAlign">Pass alpha test if fragment alpha is less than reference value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::LessOrEqual</code></td><td class="topAlign tblval"><code>0x0203</code></td><td class="topAlign">Pass alpha test if fragment alpha is less than or equal to reference value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::Equal</code></td><td class="topAlign tblval"><code>0x0202</code></td><td class="topAlign">Pass alpha test if fragment alpha is equal to reference value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::GreaterOrEqual</code></td><td class="topAlign tblval"><code>0x0206</code></td><td class="topAlign">Pass alpha test if fragment alpha is greater than or equal to reference value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::Greater</code></td><td class="topAlign tblval"><code>0x0204</code></td><td class="topAlign">Pass alpha test if fragment alpha is greater than reference value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QAlphaTest::NotEqual</code></td><td class="topAlign tblval"><code>0x0205</code></td><td class="topAlign">Pass alpha test if fragment alpha is not equal to reference value</td></tr>
</table></div>
<!-- @@@AlphaFunction -->
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<div class="prop">
<h2>Property Documentation</h2>
<!-- $$$alphaFunction-prop$$$alphaFunction$$$setAlphaFunctionQt3DRender::QAlphaTest::AlphaFunction$$$alphaFunctionChangedQt3DRender::QAlphaTest::AlphaFunction -->
<h3 class="fn" id="alphaFunction-prop"><a name="alphaFunction-prop"></a><span class="name">alphaFunction</span> : <span class="type"><a href="qt3drender-qalphatest.html#AlphaFunction-enum">AlphaFunction</a></span></h3>
<p>Holds the alpha function used by the alpha test. Default is Never.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> Qt3DRender::QAlphaTest::AlphaFunction </td><td class="memItemRight bottomAlign"><span class="name"><b>alphaFunction</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setAlphaFunction</b></span>(Qt3DRender::QAlphaTest::AlphaFunction <i>alphaFunction</i>)</td></tr>
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<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>alphaFunctionChanged</b></span>(Qt3DRender::QAlphaTest::AlphaFunction <i>alphaFunction</i>)</td></tr>
</table></div>
<!-- @@@alphaFunction -->
<!-- $$$referenceValue-prop$$$referenceValue$$$setReferenceValuefloat$$$referenceValueChangedfloat -->
<h3 class="fn" id="referenceValue-prop"><a name="referenceValue-prop"></a><span class="name">referenceValue</span> : <span class="type">float</span></h3>
<p>Holds the reference value used by the alpha test. Default is 0.0&#x2e; When set, the value is clamped between 0 and 1.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> float </td><td class="memItemRight bottomAlign"><span class="name"><b>referenceValue</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setReferenceValue</b></span>(float <i>referenceValue</i>)</td></tr>
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<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>referenceValueChanged</b></span>(float <i>referenceValue</i>)</td></tr>
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<!-- @@@referenceValue -->
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<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QAlphaTest[overload1]$$$QAlphaTestQt3DCore::QNode* -->
<h3 class="fn" id="QAlphaTest"><a name="QAlphaTest"></a>QAlphaTest::<span class="name">QAlphaTest</span>(<span class="type"><a href="qt3dcore-qnode.html">Qt3DCore::QNode</a></span> *<i>parent</i> = nullptr)</h3>
<p>Default constructs an instance of QAlphaTest.</p><!-- @@@QAlphaTest -->
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