1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title xmlns:xlink="http://www.w3.org/1999/xlink">eglQueryAPI - EGL Reference Pages</title> 5 <link rel="stylesheet" type="text/css" href="khronos-man.css"/> 6 <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"/> 7 </head> 8 <body> 9 <header/> 10 <div class="refentry" id="eglQueryAPI"> 11 <div class="titlepage"/> 12 <div class="refnamediv"> 13 <h2>Name</h2> 14 <p>eglQueryAPI — Query the current rendering API</p> 15 </div> 16 <div class="refsynopsisdiv"> 17 <h2>C Specification</h2> 18 <div class="funcsynopsis"> 19 <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table"> 20 <tr> 21 <td> 22 <code class="funcdef">EGLenum <strong class="fsfunc">eglQueryAPI</strong>(</code> 23 </td> 24 <td><code>void)</code>;</td> 25 <td> </td> 26 </tr> 27 </table> 28 <div class="funcprototype-spacer"> </div> 29 </div> 30 </div> 31 <div class="refsect1" id="description"> 32 <h2>Description</h2> 33 <p> 34 <code class="function">eglQueryAPI</code> returns the value of the 35 current rendering API for EGL in the thread it is called 36 from. The current rendering API is set by 37 <a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>, 38 and affects the behavior of other EGL commands. 39 </p> 40 <p> 41 The value returned will be one of the valid 42 <em class="parameter"><code>api</code></em> parameters to 43 <a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>, or 44 <code class="constant">EGL_NONE</code>. 45 </p> 46 </div> 47 <div class="refsect1" id="notes"> 48 <h2>Notes</h2> 49 <p> 50 <code class="function">eglQueryAPI</code> is supported only if the 51 EGL version is 1.2 or greater. 52 </p> 53 <p> 54 The initial value of the current rendering API is 55 <code class="constant">EGL_OPENGL_ES_API</code> unless OpenGL ES is 56 not supported by an implementation, in which case the 57 initial value is <code class="constant">EGL_NONE</code> (however, 58 <code class="constant">EGL_NONE</code> is not a valid 59 <em class="parameter"><code>api</code></em> parameter to 60 <code class="function">eglQueryAPI</code>). 61 </p> 62 <p> 63 The current rendering API can be changed by calling 64 <a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>. 65 </p> 66 </div> 67 <div class="refsect1" id="errors"> 68 <h2>Errors</h2> 69 <p> 70 None. 71 </p> 72 </div> 73 <div class="refsect1" id="seealso"> 74 <h2>See Also</h2> 75 <p> 76 <a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>, 77 <a class="citerefentry" href="eglCreateContext.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreateContext</span></span></a>, 78 <a class="citerefentry" href="eglGetCurrentContext.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentContext</span></span></a>, 79 <a class="citerefentry" href="eglGetCurrentDisplay.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentDisplay</span></span></a>, 80 <a class="citerefentry" href="eglGetCurrentSurface.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentSurface</span></span></a>, 81 <a class="citerefentry" href="eglMakeCurrent.xhtml"><span class="citerefentry"><span class="refentrytitle">eglMakeCurrent</span></span></a>, 82 <a class="citerefentry" href="eglWaitClient.xhtml"><span class="citerefentry"><span class="refentrytitle">eglWaitClient</span></span></a>, 83 <a class="citerefentry" href="eglWaitNative.xhtml"><span class="citerefentry"><span class="refentrytitle">eglWaitNative</span></span></a> 84 </p> 85 </div> 86 <p> 87 </p> 88 <div class="refsect3" id="copyright"> 89 <img src="KhronosLogo.jpg"/> 90 <p> 91 Copyright © 2003-2014 The Khronos Group Inc. 92 Permission is hereby granted, free of charge, to any person obtaining a 93 copy of this software and/or associated documentation files (the 94 "Materials"), to deal in the Materials without restriction, including 95 without limitation the rights to use, copy, modify, merge, publish, 96 distribute, sublicense, and/or sell copies of the Materials, and to 97 permit persons to whom the Materials are furnished to do so, subject to 98 the condition that this copyright notice and permission notice shall be included 99 in all copies or substantial portions of the Materials. 100 </p> 101 </div> 102 <p> 103</p> 104 </div> 105 <footer/> 106 </body> 107</html> 108
