<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- examples-openglseries.qdoc --> <title>OpenGL Accelerated Series Example | Qt Charts 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-examples.html">Qt Charts Examples</a></td><td >OpenGL Accelerated Series Example</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtcharts-index.html">Qt Charts | Commercial or GPLv3</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#running-the-example">Running the Example</a></li> <li class="level1"><a href="#enabling-opengl-acceleration">Enabling OpenGL Acceleration</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">OpenGL Accelerated Series Example</h1> <span class="subtitle"></span> <!-- $$$openglseries-brief --> <p>The example shows how to enable OpenGL acceleration for <a href="qlineseries.html">QLineSeries</a> and <a href="qscatterseries.html">QScatterSeries</a>.</p> <!-- @@@openglseries --> <!-- $$$openglseries-description --> <div class="descr"> <a name="details"></a> <p class="centerAlign"><img src="images/examples_openglseries.png" alt="" /></p><a name="running-the-example"></a> <h2 id="running-the-example">Running the Example</h2> <p>To run the example from Qt Creator, open the <b>Welcome</b> mode and select the example from <b>Examples</b>. For more information, visit Building and Running an Example.</p> <a name="enabling-opengl-acceleration"></a> <h2 id="enabling-opengl-acceleration">Enabling OpenGL Acceleration</h2> <p>To create an OpenGL accelerated series, all you have to do compared to a regular series is to set <a href="qabstractseries.html#useOpenGL-prop">QAbstractSeries::useOpenGL</a> property to <code>true</code>:</p> <pre class="cpp"> series<span class="operator">-</span><span class="operator">></span>setUseOpenGL(<span class="keyword">true</span>); </pre> <p>This makes the chart to instantiate a transparent QOpenGLWidget that is used to draw the accelerated series on top of the chart.</p> <p><b>Note: </b>The OpenGL acceleration is only supported for <a href="qlineseries.html">QLineSeries</a> and <a href="qscatterseries.html">QScatterSeries</a>.</p><p>Files:</p> <ul> <li><a href="qtcharts-openglseries-datasource-cpp.html">openglseries/datasource.cpp</a></li> <li><a href="qtcharts-openglseries-datasource-h.html">openglseries/datasource.h</a></li> <li><a href="qtcharts-openglseries-main-cpp.html">openglseries/main.cpp</a></li> <li><a href="qtcharts-openglseries-openglseries-pro.html">openglseries/openglseries.pro</a></li> </ul> </div> <!-- @@@openglseries --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>