102f4aeb0Sopenharmony_ci<?xml version="1.0" encoding="UTF-8"?> 202f4aeb0Sopenharmony_ci<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> 302f4aeb0Sopenharmony_ci<!-- saved from url=(0013)about:internet --> 402f4aeb0Sopenharmony_ci<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" xmlns:xlink="http://www.w3.org/1999/xlink" pref:renderer="mathplayer-dl"> 502f4aeb0Sopenharmony_ci <head> 602f4aeb0Sopenharmony_ci <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 702f4aeb0Sopenharmony_ci <style xmlns="" type="text/css"> 802f4aeb0Sopenharmony_ci /* This style sets a margin around the entire page */ 902f4aeb0Sopenharmony_ci html, body { 1002f4aeb0Sopenharmony_ci margin: 10px; 1102f4aeb0Sopenharmony_ci } 1202f4aeb0Sopenharmony_ci 1302f4aeb0Sopenharmony_ci p { 1402f4aeb0Sopenharmony_ci font: normal 16px verdana, sans-serif; 1502f4aeb0Sopenharmony_ci margin: 0; 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18902f4aeb0Sopenharmony_ci } 19002f4aeb0Sopenharmony_ci 19102f4aeb0Sopenharmony_ci div.refsect2 table { 19202f4aeb0Sopenharmony_ci margin-top: 0; 19302f4aeb0Sopenharmony_ci background-color: #e6e6e6; 19402f4aeb0Sopenharmony_ci width: 100%; 19502f4aeb0Sopenharmony_ci border: 0 solid #000; 19602f4aeb0Sopenharmony_ci padding: 2px; 19702f4aeb0Sopenharmony_ci font: normal 16px courier new, monospace !important; 19802f4aeb0Sopenharmony_ci } 19902f4aeb0Sopenharmony_ci 20002f4aeb0Sopenharmony_ci div.refsect2 td { 20102f4aeb0Sopenharmony_ci background-color: #e6e6e6; 20202f4aeb0Sopenharmony_ci font: normal 16px courier new, monospace !important; 20302f4aeb0Sopenharmony_ci white-space:pre; 20402f4aeb0Sopenharmony_ci } 20502f4aeb0Sopenharmony_ci 20602f4aeb0Sopenharmony_ci /* COPYRIGHT: This style formats the text of the copyright statement at the bottom of the page */ 20702f4aeb0Sopenharmony_ci div.refsect3 { 20802f4aeb0Sopenharmony_ci font: normal 11px verdana, sans-serif; 20902f4aeb0Sopenharmony_ci margin-top: 50px; 21002f4aeb0Sopenharmony_ci margin-bottom: 20px; 21102f4aeb0Sopenharmony_ci padding-top: 0; 21202f4aeb0Sopenharmony_ci padding-bottom: 0; 21302f4aeb0Sopenharmony_ci } 21402f4aeb0Sopenharmony_ci 21502f4aeb0Sopenharmony_ci</style> 21602f4aeb0Sopenharmony_ci <title>eglGetProcAddress</title> 21702f4aeb0Sopenharmony_ci <meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /> 21802f4aeb0Sopenharmony_ci </head> 21902f4aeb0Sopenharmony_ci <body> 22002f4aeb0Sopenharmony_ci <div class="refentry"> 22102f4aeb0Sopenharmony_ci <a id="eglGetProcAddress"></a> 22202f4aeb0Sopenharmony_ci <div class="titlepage"></div> 22302f4aeb0Sopenharmony_ci <div xmlns="" class="refnamediv"> 22402f4aeb0Sopenharmony_ci <h1>eglGetProcAddress</h1> 22502f4aeb0Sopenharmony_ci <p> 22602f4aeb0Sopenharmony_ci return a <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">GL</acronym> or an <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">EGL</acronym> 22702f4aeb0Sopenharmony_ci extension function 22802f4aeb0Sopenharmony_ci </p> 22902f4aeb0Sopenharmony_ci </div> 23002f4aeb0Sopenharmony_ci <div class="refsynopsisdiv"> 23102f4aeb0Sopenharmony_ci <h2>C Specification</h2> 23202f4aeb0Sopenharmony_ci <div class="funcsynopsis"> 23302f4aeb0Sopenharmony_ci <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"> 23402f4aeb0Sopenharmony_ci <tr valign="bottom"> 23502f4aeb0Sopenharmony_ci <td> 23602f4aeb0Sopenharmony_ci <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">void (* <strong class="fsfunc">eglGetProcAddress</strong>)()(</code> 23702f4aeb0Sopenharmony_ci <td>char const * <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">procname</var><code>)</code></td> 23802f4aeb0Sopenharmony_ci </td> 23902f4aeb0Sopenharmony_ci </tr> 24002f4aeb0Sopenharmony_ci </table> 24102f4aeb0Sopenharmony_ci </div> 24202f4aeb0Sopenharmony_ci </div> 24302f4aeb0Sopenharmony_ci <div class="refsect1"> 24402f4aeb0Sopenharmony_ci <a id="parameters"></a> 24502f4aeb0Sopenharmony_ci <h2>Parameters</h2> 24602f4aeb0Sopenharmony_ci <div class="variablelist"> 24702f4aeb0Sopenharmony_ci <dl class="variablelist"> 24802f4aeb0Sopenharmony_ci <dt> 24902f4aeb0Sopenharmony_ci <span class="term"> 25002f4aeb0Sopenharmony_ci <em class="parameter"> 25102f4aeb0Sopenharmony_ci <code>procname</code> 25202f4aeb0Sopenharmony_ci </em> 25302f4aeb0Sopenharmony_ci </span> 25402f4aeb0Sopenharmony_ci </dt> 25502f4aeb0Sopenharmony_ci <dd> 25602f4aeb0Sopenharmony_ci <p> 25702f4aeb0Sopenharmony_ci Specifies the name of the function to return. 25802f4aeb0Sopenharmony_ci </p> 25902f4aeb0Sopenharmony_ci </dd> 26002f4aeb0Sopenharmony_ci </dl> 26102f4aeb0Sopenharmony_ci </div> 26202f4aeb0Sopenharmony_ci </div> 26302f4aeb0Sopenharmony_ci <div class="refsect1"> 26402f4aeb0Sopenharmony_ci <a id="description"></a> 26502f4aeb0Sopenharmony_ci <h2>Description</h2> 26602f4aeb0Sopenharmony_ci <p> 26702f4aeb0Sopenharmony_ci <code class="function">eglGetProcAddress</code> returns the address of 26802f4aeb0Sopenharmony_ci the extension function named by <em class="parameter"><code>procname</code></em>. 26902f4aeb0Sopenharmony_ci <em class="parameter"><code>procname</code></em> 27002f4aeb0Sopenharmony_ci must be a null-terminated string. The pointer returned 27102f4aeb0Sopenharmony_ci should be cast to a function pointer type matching the extension 27202f4aeb0Sopenharmony_ci function's definition in that extension specification. A return value 27302f4aeb0Sopenharmony_ci of <code class="constant">NULL</code> indicates that the specific 27402f4aeb0Sopenharmony_ci function does not exist for the <acronym class="acronym">EGL</acronym> implementation. 27502f4aeb0Sopenharmony_ci </p> 27602f4aeb0Sopenharmony_ci <p> 27702f4aeb0Sopenharmony_ci A non-<code class="constant">NULL</code> return value does not guarantee 27802f4aeb0Sopenharmony_ci that an extension function is actually supported at runtime. The client 27902f4aeb0Sopenharmony_ci must also query 28002f4aeb0Sopenharmony_ci <a class="citerefentry" href="glGetString.html"><span class="citerefentry"><span class="refentrytitle">glGetString</span></span></a>(<code class="constant">GL_EXTENSIONS</code>) or 28102f4aeb0Sopenharmony_ci <a class="citerefentry" href="eglQueryString.html"><span class="citerefentry"><span class="refentrytitle">eglQueryString</span></span></a>(<em class="parameter"><code>display</code></em>, 28202f4aeb0Sopenharmony_ci <code class="constant">EGL_EXTENSIONS</code>) to determine if an 28302f4aeb0Sopenharmony_ci extension is supported by a particular context or display. 28402f4aeb0Sopenharmony_ci </p> 28502f4aeb0Sopenharmony_ci <p> 28602f4aeb0Sopenharmony_ci Function pointers returned by 28702f4aeb0Sopenharmony_ci <code class="function">eglGetProcAddress</code> are independent of the 28802f4aeb0Sopenharmony_ci display and the currently bound context and may be used by any context 28902f4aeb0Sopenharmony_ci which supports the extension. 29002f4aeb0Sopenharmony_ci </p> 29102f4aeb0Sopenharmony_ci <p> 29202f4aeb0Sopenharmony_ci <code class="function">eglGetProcAddress</code> may be queried for all 29302f4aeb0Sopenharmony_ci <acronym class="acronym">GL</acronym> and <acronym class="acronym">EGL</acronym> extension functions. 29402f4aeb0Sopenharmony_ci </p> 29502f4aeb0Sopenharmony_ci </div> 29602f4aeb0Sopenharmony_ci <div class="refsect1"> 29702f4aeb0Sopenharmony_ci <a id="seealso"></a> 29802f4aeb0Sopenharmony_ci <h2>See Also</h2> 29902f4aeb0Sopenharmony_ci <p> 30002f4aeb0Sopenharmony_ci <a class="citerefentry" href="glGetString.html"><span class="citerefentry"><span class="refentrytitle">glGetString</span></span></a>, 30102f4aeb0Sopenharmony_ci <a class="citerefentry" href="eglQueryString.html"><span class="citerefentry"><span class="refentrytitle">eglQueryString</span></span></a> </p> 30202f4aeb0Sopenharmony_ci </div> 30302f4aeb0Sopenharmony_ci <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p> 30402f4aeb0Sopenharmony_ciCopyright © 2003-2014 The Khronos Group Inc. 30502f4aeb0Sopenharmony_ciPermission is hereby granted, free of charge, to any person obtaining a 30602f4aeb0Sopenharmony_cicopy of this software and/or associated documentation files (the 30702f4aeb0Sopenharmony_ci"Materials"), to deal in the Materials without restriction, including 30802f4aeb0Sopenharmony_ciwithout limitation the rights to use, copy, modify, merge, publish, 30902f4aeb0Sopenharmony_cidistribute, sublicense, and/or sell copies of the Materials, and to 31002f4aeb0Sopenharmony_cipermit persons to whom the Materials are furnished to do so, subject to 31102f4aeb0Sopenharmony_cithe condition that this copyright notice and permission notice shall be included 31202f4aeb0Sopenharmony_ciin all copies or substantial portions of the Materials. 31302f4aeb0Sopenharmony_ci</div> 31402f4aeb0Sopenharmony_ci </div> 31502f4aeb0Sopenharmony_ci </body> 31602f4aeb0Sopenharmony_ci</html> 317
