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<td >Qt 5.12</td><td ><a href="qt3d-index.html">Qt 3D</a></td><td ><a href="qt3d-qml.html">QML Types</a></td><td >Technique QML Type</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qt3d-index.html">Qt 5.12.2 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">Technique QML Type</h1>
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<!-- $$$Technique-brief -->
<p>Encapsulates a Technique. <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import Qt3D.Render 2.12</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"> Instantiates:</td><td class="memItemRight bottomAlign"> <a href="qml-qt3d-render-technique.html"><a href="qt3drender-qtechnique.html">QTechnique</a></td></tr></table></div><ul>
<li><a href="qml-qt3d-render-technique-members.html">List of all members, including inherited members</a></li>
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<h2 id="properties">Properties</h2>
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<li class="fn"><b><b><a href="qml-qt3d-render-technique.html#filterKeys-prop">filterKeys</a></b></b> : list<FilterKey></li>
<li class="fn"><b><b><a href="qml-qt3d-render-technique.html#graphicsApiFilter-prop">graphicsApiFilter</a></b></b> : GraphicsApiFilter</li>
<li class="fn"><b><b><a href="qml-qt3d-render-technique.html#parameters-prop">parameters</a></b></b> : list<Parameter></li>
<li class="fn"><b><b><a href="qml-qt3d-render-technique.html#renderPasses-prop">renderPasses</a></b></b> : list<RenderPass></li>
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<h2 id="details">Detailed Description</h2>
<p>A Technique specifies a set of <a href="qml-qt3d-render-renderpass.html">RenderPass</a> objects, <a href="qml-qt3d-render-filterkey.html">FilterKey</a> objects, Parameter objects and a <a href="qml-qt3d-render-graphicsapifilter.html">GraphicsApiFilter</a>, which together define a rendering technique the given graphics API can render. The filter keys are used by <a href="qml-qt3d-render-techniquefilter.html">TechniqueFilter</a> to select specific techniques at specific parts of the FrameGraph. If two Parameter instances with the same name are specified in a Technique and a <a href="qml-qt3d-render-renderpass.html">RenderPass</a>, the one in Technique overrides the one used in the <a href="qml-qt3d-render-renderpass.html">RenderPass</a>.</p>
<p>When creating an Effect that targets several versions of a graphics API, it is useful to create several Technique nodes each with a <a href="qml-qt3d-render-technique.html#graphicsApiFilter-prop">graphicsApiFilter</a> set to match one of the targeted versions. At runtime, the Qt3D renderer will select the most appropriate Technique based on which graphics API versions are supported and (if specified) the <a href="qml-qt3d-render-filterkey.html">FilterKey</a> nodes that satisfy a given <a href="qml-qt3d-render-techniquefilter.html">TechniqueFilter</a> in the FrameGraph.</p>
<p><b>Note: </b>When using OpenGL as the graphics API for rendering, Qt3D relies on the QSurfaceFormat returned by QSurfaceFormat::defaultFormat() at runtime to decide what is the most appropriate GL version available. If you need to customize the QSurfaceFormat, do not forget to apply it with QSurfaceFormat::setDefaultFormat(). Setting the QSurfaceFormat on the view will likely have no effect on Qt3D related rendering.</p><pre class="qml">
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<p><b>See also </b><a href="qml-qt3d-render-effect.html">Effect</a>, <a href="qml-qt3d-render-renderpass.html">RenderPass</a>, and <a href="qml-qt3d-render-techniquefilter.html">TechniqueFilter</a>.</p>
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<h2>Property Documentation</h2>
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<a name="filterKeys-prop"></a><span class="name">filterKeys</span> : <span class="type">list</span><<span class="type"><a href="qml-qt3d-render-filterkey.html">FilterKey</a></span>></p></td></tr>
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</div><div class="qmldoc"><p>Specifies the list of filter keys enabling this technique</p>
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<a name="graphicsApiFilter-prop"></a><span class="name">graphicsApiFilter</span> : <span class="type"><a href="qml-qt3d-render-graphicsapifilter.html">GraphicsApiFilter</a></span></p></td></tr>
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</div><div class="qmldoc"><p>Specifies the graphics API filter being used</p>
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<a name="parameters-prop"></a><span class="name">parameters</span> : <span class="type">list</span><<span class="type"><a href="qml-qt3d-render-parameter.html">Parameter</a></span>></p></td></tr>
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</div><div class="qmldoc"><p>Specifies the parameters used by the technique</p>
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<!-- $$$renderPasses -->
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<a name="renderPasses-prop"></a><span class="name">renderPasses</span> : <span class="type">list</span><<span class="type"><a href="qml-qt3d-render-renderpass.html">RenderPass</a></span>></p></td></tr>
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</div><div class="qmldoc"><p>Specifies the render passes used by the tehcnique</p>
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