<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>glwidget.cpp Example File | Qt OpenGL</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="qtopengl-index.html">Qt OpenGL</a></td><td ><a href="qtopengl-textures-example.html">Textures Example</a></td><td >glwidget.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtopengl-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">glwidget.cpp Example File</h1> <span class="subtitle">textures/glwidget.cpp</span> <!-- $$$textures/glwidget.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "glwidget.h"</span> <span class="preprocessor">#include <QOpenGLShaderProgram></span> <span class="preprocessor">#include <QOpenGLTexture></span> <span class="preprocessor">#include <QMouseEvent></span> GLWidget<span class="operator">::</span>GLWidget(<span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="../qtwidgets/qopenglwidget.html">QOpenGLWidget</a></span>(parent)<span class="operator">,</span> clearColor(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black)<span class="operator">,</span> xRot(<span class="number">0</span>)<span class="operator">,</span> yRot(<span class="number">0</span>)<span class="operator">,</span> zRot(<span class="number">0</span>)<span class="operator">,</span> program(<span class="number">0</span>) { memset(textures<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="keyword">sizeof</span>(textures)); } GLWidget<span class="operator">::</span><span class="operator">~</span>GLWidget() { makeCurrent(); vbo<span class="operator">.</span>destroy(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">6</span>; <span class="operator">+</span><span class="operator">+</span>i) <span class="keyword">delete</span> textures<span class="operator">[</span>i<span class="operator">]</span>; <span class="keyword">delete</span> program; doneCurrent(); } <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> GLWidget<span class="operator">::</span>minimumSizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>); } <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> GLWidget<span class="operator">::</span>sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(<span class="number">200</span><span class="operator">,</span> <span class="number">200</span>); } <span class="type">void</span> GLWidget<span class="operator">::</span>rotateBy(<span class="type">int</span> xAngle<span class="operator">,</span> <span class="type">int</span> yAngle<span class="operator">,</span> <span class="type">int</span> zAngle) { xRot <span class="operator">+</span><span class="operator">=</span> xAngle; yRot <span class="operator">+</span><span class="operator">=</span> yAngle; zRot <span class="operator">+</span><span class="operator">=</span> zAngle; update(); } <span class="type">void</span> GLWidget<span class="operator">::</span>setClearColor(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> <span class="operator">&</span>color) { clearColor <span class="operator">=</span> color; update(); } <span class="type">void</span> GLWidget<span class="operator">::</span>initializeGL() { initializeOpenGLFunctions(); makeObject(); glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); <span class="preprocessor">#define PROGRAM_VERTEX_ATTRIBUTE 0</span> <span class="preprocessor">#define PROGRAM_TEXCOORD_ATTRIBUTE 1</span> <span class="type"><a href="../qtgui/qopenglshader.html">QOpenGLShader</a></span> <span class="operator">*</span>vshader <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtgui/qopenglshader.html">QOpenGLShader</a></span>(<span class="type"><a href="../qtgui/qopenglshader.html">QOpenGLShader</a></span><span class="operator">::</span>Vertex<span class="operator">,</span> <span class="keyword">this</span>); <span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span>vsrc <span class="operator">=</span> <span class="string">"attribute highp vec4 vertex;\n"</span> <span class="string">"attribute mediump vec4 texCoord;\n"</span> <span class="string">"varying mediump vec4 texc;\n"</span> <span class="string">"uniform mediump mat4 matrix;\n"</span> <span class="string">"void main(void)\n"</span> <span class="string">"{\n"</span> <span class="string">" gl_Position = matrix * vertex;\n"</span> <span class="string">" texc = texCoord;\n"</span> <span class="string">"}\n"</span>; vshader<span class="operator">-</span><span class="operator">></span>compileSourceCode(vsrc); <span class="type"><a href="../qtgui/qopenglshader.html">QOpenGLShader</a></span> <span class="operator">*</span>fshader <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtgui/qopenglshader.html">QOpenGLShader</a></span>(<span class="type"><a href="../qtgui/qopenglshader.html">QOpenGLShader</a></span><span class="operator">::</span>Fragment<span class="operator">,</span> <span class="keyword">this</span>); <span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span>fsrc <span class="operator">=</span> <span class="string">"uniform sampler2D texture;\n"</span> <span class="string">"varying mediump vec4 texc;\n"</span> <span class="string">"void main(void)\n"</span> <span class="string">"{\n"</span> <span class="string">" gl_FragColor = texture2D(texture, texc.st);\n"</span> <span class="string">"}\n"</span>; fshader<span class="operator">-</span><span class="operator">></span>compileSourceCode(fsrc); program <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtgui/qopenglshaderprogram.html">QOpenGLShaderProgram</a></span>; program<span class="operator">-</span><span class="operator">></span>addShader(vshader); program<span class="operator">-</span><span class="operator">></span>addShader(fshader); program<span class="operator">-</span><span class="operator">></span>bindAttributeLocation(<span class="string">"vertex"</span><span class="operator">,</span> PROGRAM_VERTEX_ATTRIBUTE); program<span class="operator">-</span><span class="operator">></span>bindAttributeLocation(<span class="string">"texCoord"</span><span class="operator">,</span> PROGRAM_TEXCOORD_ATTRIBUTE); program<span class="operator">-</span><span class="operator">></span>link(); program<span class="operator">-</span><span class="operator">></span>bind(); program<span class="operator">-</span><span class="operator">></span>setUniformValue(<span class="string">"texture"</span><span class="operator">,</span> <span class="number">0</span>); } <span class="type">void</span> GLWidget<span class="operator">::</span>paintGL() { glClearColor(clearColor<span class="operator">.</span>redF()<span class="operator">,</span> clearColor<span class="operator">.</span>greenF()<span class="operator">,</span> clearColor<span class="operator">.</span>blueF()<span class="operator">,</span> clearColor<span class="operator">.</span>alphaF()); glClear(GL_COLOR_BUFFER_BIT <span class="operator">|</span> GL_DEPTH_BUFFER_BIT); QMatrix4x4 m; m<span class="operator">.</span>ortho(<span class="operator">-</span><span class="number">0.5f</span><span class="operator">,</span> <span class="operator">+</span><span class="number">0.5f</span><span class="operator">,</span> <span class="operator">+</span><span class="number">0.5f</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5f</span><span class="operator">,</span> <span class="number">4.0f</span><span class="operator">,</span> <span class="number">15.0f</span>); m<span class="operator">.</span>translate(<span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="operator">-</span><span class="number">10.0f</span>); m<span class="operator">.</span>rotate(xRot <span class="operator">/</span> <span class="number">16.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); m<span class="operator">.</span>rotate(yRot <span class="operator">/</span> <span class="number">16.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); m<span class="operator">.</span>rotate(zRot <span class="operator">/</span> <span class="number">16.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span>); program<span class="operator">-</span><span class="operator">></span>setUniformValue(<span class="string">"matrix"</span><span class="operator">,</span> m); program<span class="operator">-</span><span class="operator">></span>enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE); program<span class="operator">-</span><span class="operator">></span>enableAttributeArray(PROGRAM_TEXCOORD_ATTRIBUTE); program<span class="operator">-</span><span class="operator">></span>setAttributeBuffer(PROGRAM_VERTEX_ATTRIBUTE<span class="operator">,</span> GL_FLOAT<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">5</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(GLfloat)); program<span class="operator">-</span><span class="operator">></span>setAttributeBuffer(PROGRAM_TEXCOORD_ATTRIBUTE<span class="operator">,</span> GL_FLOAT<span class="operator">,</span> <span class="number">3</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(GLfloat)<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">5</span> <span class="operator">*</span> <span class="keyword">sizeof</span>(GLfloat)); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">6</span>; <span class="operator">+</span><span class="operator">+</span>i) { textures<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>bind(); glDrawArrays(GL_TRIANGLE_FAN<span class="operator">,</span> i <span class="operator">*</span> <span class="number">4</span><span class="operator">,</span> <span class="number">4</span>); } } <span class="type">void</span> GLWidget<span class="operator">::</span>resizeGL(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height) { <span class="type">int</span> side <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qMin">qMin</a>(width<span class="operator">,</span> height); glViewport((width <span class="operator">-</span> side) <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> (height <span class="operator">-</span> side) <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> side<span class="operator">,</span> side); } <span class="type">void</span> GLWidget<span class="operator">::</span>mousePressEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>event) { lastPos <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>pos(); } <span class="type">void</span> GLWidget<span class="operator">::</span>mouseMoveEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>event) { <span class="type">int</span> dx <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>x() <span class="operator">-</span> lastPos<span class="operator">.</span>x(); <span class="type">int</span> dy <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>y() <span class="operator">-</span> lastPos<span class="operator">.</span>y(); <span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>buttons() <span class="operator">&</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LeftButton) { rotateBy(<span class="number">8</span> <span class="operator">*</span> dy<span class="operator">,</span> <span class="number">8</span> <span class="operator">*</span> dx<span class="operator">,</span> <span class="number">0</span>); } <span class="keyword">else</span> <span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>buttons() <span class="operator">&</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>RightButton) { rotateBy(<span class="number">8</span> <span class="operator">*</span> dy<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">8</span> <span class="operator">*</span> dx); } lastPos <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>pos(); } <span class="type">void</span> GLWidget<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span> <span class="comment">/* event */</span>) { <span class="keyword">emit</span> clicked(); } <span class="type">void</span> GLWidget<span class="operator">::</span>makeObject() { <span class="keyword">static</span> <span class="keyword">const</span> <span class="type">int</span> coords<span class="operator">[</span><span class="number">6</span><span class="operator">]</span><span class="operator">[</span><span class="number">4</span><span class="operator">]</span><span class="operator">[</span><span class="number">3</span><span class="operator">]</span> <span class="operator">=</span> { { { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> } }<span class="operator">,</span> { { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> } }<span class="operator">,</span> { { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> } }<span class="operator">,</span> { { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> } }<span class="operator">,</span> { { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span> } }<span class="operator">,</span> { { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> }<span class="operator">,</span> { <span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span><span class="operator">,</span> <span class="operator">+</span><span class="number">1</span> } } }; <span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span> <span class="number">6</span>; <span class="operator">+</span><span class="operator">+</span>j) textures<span class="operator">[</span>j<span class="operator">]</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtgui/qopengltexture.html">QOpenGLTexture</a></span>(<span class="type"><a href="../qtgui/qimage.html">QImage</a></span>(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>(<span class="string">":/images/side%1.png"</span>)<span class="operator">.</span>arg(j <span class="operator">+</span> <span class="number">1</span>))<span class="operator">.</span>mirrored()); <span class="type"><a href="../qtcore/qvector.html">QVector</a></span><span class="operator"><</span>GLfloat<span class="operator">></span> vertData; <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">6</span>; <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span> <span class="number">4</span>; <span class="operator">+</span><span class="operator">+</span>j) { <span class="comment">// vertex position</span> vertData<span class="operator">.</span>append(<span class="number">0.2</span> <span class="operator">*</span> coords<span class="operator">[</span>i<span class="operator">]</span><span class="operator">[</span>j<span class="operator">]</span><span class="operator">[</span><span class="number">0</span><span class="operator">]</span>); vertData<span class="operator">.</span>append(<span class="number">0.2</span> <span class="operator">*</span> coords<span class="operator">[</span>i<span class="operator">]</span><span class="operator">[</span>j<span class="operator">]</span><span class="operator">[</span><span class="number">1</span><span class="operator">]</span>); vertData<span class="operator">.</span>append(<span class="number">0.2</span> <span class="operator">*</span> coords<span class="operator">[</span>i<span class="operator">]</span><span class="operator">[</span>j<span class="operator">]</span><span class="operator">[</span><span class="number">2</span><span class="operator">]</span>); <span class="comment">// texture coordinate</span> vertData<span class="operator">.</span>append(j <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> j <span class="operator">=</span><span class="operator">=</span> <span class="number">3</span>); vertData<span class="operator">.</span>append(j <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> j <span class="operator">=</span><span class="operator">=</span> <span class="number">1</span>); } } vbo<span class="operator">.</span>create(); vbo<span class="operator">.</span>bind(); vbo<span class="operator">.</span>allocate(vertData<span class="operator">.</span>constData()<span class="operator">,</span> vertData<span class="operator">.</span>count() <span class="operator">*</span> <span class="keyword">sizeof</span>(GLfloat)); } </pre> </div> <!-- @@@textures/glwidget.cpp --> </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>