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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 >QDepthTest</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>
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<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QDepthTest Class</h1>
<span class="small-subtitle">(<a href="qt3drender-qdepthtest.html">Qt3DRender::QDepthTest</a>)<br/></span>
<!-- $$$QDepthTest-brief -->
<p>The <a href="qt3drender-qdepthtest.html">QDepthTest</a> class tests the fragment shader's depth value against the depth of a sample being written to. <a href="#details">More...</a></p>
<!-- @@@QDepthTest -->
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QDepthTest&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-depthtest.html">DepthTest</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-qdepthtest-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-qdepthtest.html#DepthFunction-enum">DepthFunction</a></b> { Never, Always, Less, LessOrEqual, ..., NotEqual }</td></tr>
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<h2 id="properties">Properties</h2>
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<li class="fn"><b><a href="qt3drender-qdepthtest.html#depthFunction-prop">depthFunction</a></b> : DepthFunction</li>
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<li class="fn">3 properties inherited from <a href="qt3dcore-qnode.html#properties">Qt3DCore::QNode</a></li>
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<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-qdepthtest.html#QDepthTest">QDepthTest</a></b>(Qt3DCore::QNode *<i>parent</i> = nullptr)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DRender::QDepthTest::DepthFunction </td><td class="memItemRight bottomAlign"><b><a href="qt3drender-qdepthtest.html#depthFunction-prop">depthFunction</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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<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-qdepthtest.html#depthFunction-prop">setDepthFunction</a></b>(Qt3DRender::QDepthTest::DepthFunction <i>depthFunction</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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<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-qdepthtest.html#depthFunction-prop">depthFunctionChanged</a></b>(Qt3DRender::QDepthTest::DepthFunction <i>depthFunction</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-qdepthtest.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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<!-- $$$QDepthTest-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qt3drender-qdepthtest.html">QDepthTest</a> class tests the fragment shader's depth value against the depth of a sample being written to.</p>
<p>A <a href="qt3drender-qdepthtest.html">QDepthTest</a> class is used to enable depth testing with a given depth test function. The depth test enables writing fragment color values when the depth test passes, and reject fragments which fail the test. The depth test uses the depth function to test the fragments depth value to the value against z-buffer. If the underlying surface does not have z-buffer, then <a href="qt3drender-qdepthtest.html">QDepthTest</a> does nothing.</p>
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<p><b>See also </b><a href="qt3drender-qalphatest.html">QAlphaTest</a> and <a href="qt3drender-qstenciltest.html">QStencilTest</a>.</p>
<!-- @@@QDepthTest -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$DepthFunction$$$Never$$$Always$$$Less$$$LessOrEqual$$$Equal$$$GreaterOrEqual$$$Greater$$$NotEqual -->
<h3 class="fn" id="DepthFunction-enum"><a name="DepthFunction-enum"></a>enum QDepthTest::<span class="name">DepthFunction</span></h3>
<p>Enumeration for the depth 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::QDepthTest::Never</code></td><td class="topAlign tblval"><code>0x0200</code></td><td class="topAlign">Never pass depth test</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::Always</code></td><td class="topAlign tblval"><code>0x0207</code></td><td class="topAlign">Always pass depth test</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::Less</code></td><td class="topAlign tblval"><code>0x0201</code></td><td class="topAlign">Pass depth test if fragment depth is less than z-buffer value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::LessOrEqual</code></td><td class="topAlign tblval"><code>0x0203</code></td><td class="topAlign">Pass depth test if fragment depth is less than or equal to z-buffer value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::Equal</code></td><td class="topAlign tblval"><code>0x0202</code></td><td class="topAlign">Pass depth test if fragment depth is equal to z-buffer value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::GreaterOrEqual</code></td><td class="topAlign tblval"><code>0x0206</code></td><td class="topAlign">Pass depth test if fragment depth is greater than or equal to z-buffer value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::Greater</code></td><td class="topAlign tblval"><code>0x0204</code></td><td class="topAlign">Pass depth test if fragment depth is greater than z-buffer value</td></tr>
<tr><td class="topAlign"><code>Qt3DRender::QDepthTest::NotEqual</code></td><td class="topAlign tblval"><code>0x0205</code></td><td class="topAlign">Pass depth test if fragment depth is not equal to z-buffer value</td></tr>
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<!-- @@@DepthFunction -->
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<div class="prop">
<h2>Property Documentation</h2>
<!-- $$$depthFunction-prop$$$depthFunction$$$setDepthFunctionQt3DRender::QDepthTest::DepthFunction$$$depthFunctionChangedQt3DRender::QDepthTest::DepthFunction -->
<h3 class="fn" id="depthFunction-prop"><a name="depthFunction-prop"></a><span class="name">depthFunction</span> : <span class="type"><a href="qt3drender-qdepthtest.html#DepthFunction-enum">DepthFunction</a></span></h3>
<p>Holds the current function used by depth test. The default is Never.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> Qt3DRender::QDepthTest::DepthFunction </td><td class="memItemRight bottomAlign"><span class="name"><b>depthFunction</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setDepthFunction</b></span>(Qt3DRender::QDepthTest::DepthFunction <i>depthFunction</i>)</td></tr>
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<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>depthFunctionChanged</b></span>(Qt3DRender::QDepthTest::DepthFunction <i>depthFunction</i>)</td></tr>
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<!-- @@@depthFunction -->
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<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QDepthTest[overload1]$$$QDepthTestQt3DCore::QNode* -->
<h3 class="fn" id="QDepthTest"><a name="QDepthTest"></a>QDepthTest::<span class="name">QDepthTest</span>(<span class="type"><a href="qt3dcore-qnode.html">Qt3DCore::QNode</a></span> *<i>parent</i> = nullptr)</h3>
<p>The constructor creates a new <a href="qt3drender-qdepthtest.html">QDepthTest::QDepthTest</a> instance with the specified <i>parent</i>.</p>
<!-- @@@QDepthTest -->
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