<?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>glextensions.h Example File | Qt Widgets 5.9</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 5.9</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-graphicsview-boxes-example.html">Boxes</a></td><td >glextensions.h Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</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">glextensions.h Example File</h1> <span class="subtitle">graphicsview/boxes/glextensions.h</span> <!-- $$$graphicsview/boxes/glextensions.h-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 demonstration applications 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">#ifndef GLEXTENSIONS_H</span> <span class="preprocessor">#define GLEXTENSIONS_H</span> <span class="preprocessor">#include <QtOpenGL></span> <span class="comment">/* Functions resolved: glGenFramebuffersEXT glGenRenderbuffersEXT glBindRenderbufferEXT glRenderbufferStorageEXT glDeleteFramebuffersEXT glDeleteRenderbuffersEXT glBindFramebufferEXT glFramebufferTexture2DEXT glFramebufferRenderbufferEXT glCheckFramebufferStatusEXT glActiveTexture glTexImage3D glGenBuffers glBindBuffer glBufferData glDeleteBuffers glMapBuffer glUnmapBuffer */</span> <span class="preprocessor">#ifndef Q_OS_MAC</span> <span class="preprocessor"># ifndef APIENTRYP</span> <span class="preprocessor"># ifdef APIENTRY</span> <span class="preprocessor"># define APIENTRYP APIENTRY *</span> <span class="preprocessor"># else</span> <span class="preprocessor"># define APIENTRY</span> <span class="preprocessor"># define APIENTRYP *</span> <span class="preprocessor"># endif</span> <span class="preprocessor"># endif</span> <span class="preprocessor">#else</span> <span class="preprocessor"># define APIENTRY</span> <span class="preprocessor"># define APIENTRYP *</span> <span class="preprocessor">#endif</span> <span class="preprocessor">#ifndef GL_VERSION_1_2</span> <span class="preprocessor">#define GL_TEXTURE_3D 0x806F</span> <span class="preprocessor">#define GL_TEXTURE_WRAP_R 0x8072</span> <span class="preprocessor">#define GL_CLAMP_TO_EDGE 0x812F</span> <span class="preprocessor">#define GL_BGRA 0x80E1</span> <span class="preprocessor">#endif</span> <span class="preprocessor">#ifndef GL_VERSION_1_3</span> <span class="preprocessor">#define GL_TEXTURE0 0x84C0</span> <span class="preprocessor">#define GL_TEXTURE1 0x84C1</span> <span class="preprocessor">#define GL_TEXTURE2 0x84C2</span> <span class="preprocessor">#define GL_TEXTURE_CUBE_MAP 0x8513</span> <span class="preprocessor">#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515</span> <span class="comment">//#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516</span> <span class="comment">//#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517</span> <span class="comment">//#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518</span> <span class="comment">//#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519</span> <span class="comment">//#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A</span> <span class="preprocessor">#endif</span> <span class="preprocessor">#ifndef GL_ARB_vertex_buffer_object</span> <span class="keyword">typedef</span> ptrdiff_t GLsizeiptrARB; <span class="preprocessor">#endif</span> <span class="preprocessor">#ifndef GL_VERSION_1_5</span> <span class="preprocessor">#define GL_ARRAY_BUFFER 0x8892</span> <span class="preprocessor">#define GL_ELEMENT_ARRAY_BUFFER 0x8893</span> <span class="preprocessor">#define GL_READ_WRITE 0x88BA</span> <span class="preprocessor">#define GL_STATIC_DRAW 0x88E4</span> <span class="preprocessor">#endif</span> <span class="preprocessor">#ifndef GL_EXT_framebuffer_object</span> <span class="preprocessor">#define GL_RENDERBUFFER_EXT 0x8D41</span> <span class="preprocessor">#define GL_FRAMEBUFFER_EXT 0x8D40</span> <span class="preprocessor">#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5</span> <span class="preprocessor">#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0</span> <span class="preprocessor">#define GL_DEPTH_ATTACHMENT_EXT 0x8D00</span> <span class="preprocessor">#endif</span> <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glGenFramebuffersEXT) (GLsizei<span class="operator">,</span> GLuint <span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glGenRenderbuffersEXT) (GLsizei<span class="operator">,</span> GLuint <span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glBindRenderbufferEXT) (GLenum<span class="operator">,</span> GLuint); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glRenderbufferStorageEXT) (GLenum<span class="operator">,</span> GLenum<span class="operator">,</span> GLsizei<span class="operator">,</span> GLsizei); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glDeleteFramebuffersEXT) (GLsizei<span class="operator">,</span> <span class="keyword">const</span> GLuint<span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glDeleteRenderbuffersEXT) (GLsizei<span class="operator">,</span> <span class="keyword">const</span> GLuint<span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glBindFramebufferEXT) (GLenum<span class="operator">,</span> GLuint); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glFramebufferTexture2DEXT) (GLenum<span class="operator">,</span> GLenum<span class="operator">,</span> GLenum<span class="operator">,</span> GLuint<span class="operator">,</span> GLint); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glFramebufferRenderbufferEXT) (GLenum<span class="operator">,</span> GLenum<span class="operator">,</span> GLenum<span class="operator">,</span> GLuint); <span class="keyword">typedef</span> GLenum (APIENTRY <span class="operator">*</span>_glCheckFramebufferStatusEXT) (GLenum); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glActiveTexture) (GLenum); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glTexImage3D) (GLenum<span class="operator">,</span> GLint<span class="operator">,</span> GLenum<span class="operator">,</span> GLsizei<span class="operator">,</span> GLsizei<span class="operator">,</span> GLsizei<span class="operator">,</span> GLint<span class="operator">,</span> GLenum<span class="operator">,</span> GLenum<span class="operator">,</span> <span class="keyword">const</span> GLvoid <span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glGenBuffers) (GLsizei<span class="operator">,</span> GLuint <span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glBindBuffer) (GLenum<span class="operator">,</span> GLuint); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glBufferData) (GLenum<span class="operator">,</span> GLsizeiptrARB<span class="operator">,</span> <span class="keyword">const</span> GLvoid <span class="operator">*</span><span class="operator">,</span> GLenum); <span class="keyword">typedef</span> <span class="type">void</span> (APIENTRY <span class="operator">*</span>_glDeleteBuffers) (GLsizei<span class="operator">,</span> <span class="keyword">const</span> GLuint <span class="operator">*</span>); <span class="keyword">typedef</span> <span class="type">void</span> <span class="operator">*</span>(APIENTRY <span class="operator">*</span>_glMapBuffer) (GLenum<span class="operator">,</span> GLenum); <span class="keyword">typedef</span> GLboolean (APIENTRY <span class="operator">*</span>_glUnmapBuffer) (GLenum); <span class="keyword">struct</span> GLExtensionFunctions { bool resolve(<span class="keyword">const</span> <span class="type">QGLContext</span> <span class="operator">*</span>context); bool fboSupported(); bool openGL15Supported(); <span class="comment">// the rest: multi-texture, 3D-texture, vertex buffer objects</span> _glGenFramebuffersEXT GenFramebuffersEXT; _glGenRenderbuffersEXT GenRenderbuffersEXT; _glBindRenderbufferEXT BindRenderbufferEXT; _glRenderbufferStorageEXT RenderbufferStorageEXT; _glDeleteFramebuffersEXT DeleteFramebuffersEXT; _glDeleteRenderbuffersEXT DeleteRenderbuffersEXT; _glBindFramebufferEXT BindFramebufferEXT; _glFramebufferTexture2DEXT FramebufferTexture2DEXT; _glFramebufferRenderbufferEXT FramebufferRenderbufferEXT; _glCheckFramebufferStatusEXT CheckFramebufferStatusEXT; _glActiveTexture ActiveTexture; _glTexImage3D TexImage3D; _glGenBuffers GenBuffers; _glBindBuffer BindBuffer; _glBufferData BufferData; _glDeleteBuffers DeleteBuffers; _glMapBuffer MapBuffer; _glUnmapBuffer UnmapBuffer; }; <span class="keyword">inline</span> GLExtensionFunctions <span class="operator">&</span>getGLExtensionFunctions() { <span class="keyword">static</span> GLExtensionFunctions funcs; <span class="keyword">return</span> funcs; } <span class="preprocessor">#define glGenFramebuffersEXT getGLExtensionFunctions().GenFramebuffersEXT</span> <span class="preprocessor">#define glGenRenderbuffersEXT getGLExtensionFunctions().GenRenderbuffersEXT</span> <span class="preprocessor">#define glBindRenderbufferEXT getGLExtensionFunctions().BindRenderbufferEXT</span> <span class="preprocessor">#define glRenderbufferStorageEXT getGLExtensionFunctions().RenderbufferStorageEXT</span> <span class="preprocessor">#define glDeleteFramebuffersEXT getGLExtensionFunctions().DeleteFramebuffersEXT</span> <span class="preprocessor">#define glDeleteRenderbuffersEXT getGLExtensionFunctions().DeleteRenderbuffersEXT</span> <span class="preprocessor">#define glBindFramebufferEXT getGLExtensionFunctions().BindFramebufferEXT</span> <span class="preprocessor">#define glFramebufferTexture2DEXT getGLExtensionFunctions().FramebufferTexture2DEXT</span> <span class="preprocessor">#define glFramebufferRenderbufferEXT getGLExtensionFunctions().FramebufferRenderbufferEXT</span> <span class="preprocessor">#define glCheckFramebufferStatusEXT getGLExtensionFunctions().CheckFramebufferStatusEXT</span> <span class="preprocessor">#define glActiveTexture getGLExtensionFunctions().ActiveTexture</span> <span class="preprocessor">#define glTexImage3D getGLExtensionFunctions().TexImage3D</span> <span class="preprocessor">#define glGenBuffers getGLExtensionFunctions().GenBuffers</span> <span class="preprocessor">#define glBindBuffer getGLExtensionFunctions().BindBuffer</span> <span class="preprocessor">#define glBufferData getGLExtensionFunctions().BufferData</span> <span class="preprocessor">#define glDeleteBuffers getGLExtensionFunctions().DeleteBuffers</span> <span class="preprocessor">#define glMapBuffer getGLExtensionFunctions().MapBuffer</span> <span class="preprocessor">#define glUnmapBuffer getGLExtensionFunctions().UnmapBuffer</span> <span class="preprocessor">#endif</span> </pre> </div> <!-- @@@graphicsview/boxes/glextensions.h --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 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>