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108 lines
5.2 KiB
HTML
108 lines
5.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title xmlns:xlink="http://www.w3.org/1999/xlink">eglQueryAPI - EGL Reference Pages</title>
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<link rel="stylesheet" type="text/css" href="khronos-man.css"/>
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<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"/>
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</head>
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<body>
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<header/>
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<div class="refentry" id="eglQueryAPI">
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<div class="titlepage"/>
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<div class="refnamediv">
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<h2>Name</h2>
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<p>eglQueryAPI — Query the current rendering API</p>
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</div>
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<div class="refsynopsisdiv">
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<h2>C Specification</h2>
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<div class="funcsynopsis">
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<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
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<tr>
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<td>
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<code class="funcdef">EGLenum <strong class="fsfunc">eglQueryAPI</strong>(</code>
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</td>
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<td><code>void)</code>;</td>
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<td> </td>
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</tr>
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</table>
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<div class="funcprototype-spacer"> </div>
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</div>
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</div>
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<div class="refsect1" id="description">
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<h2>Description</h2>
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<p>
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<code class="function">eglQueryAPI</code> returns the value of the
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current rendering API for EGL in the thread it is called
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from. The current rendering API is set by
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<a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>,
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and affects the behavior of other EGL commands.
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</p>
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<p>
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The value returned will be one of the valid
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<em class="parameter"><code>api</code></em> parameters to
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<a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>, or
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<code class="constant">EGL_NONE</code>.
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</p>
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</div>
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<div class="refsect1" id="notes">
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<h2>Notes</h2>
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<p>
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<code class="function">eglQueryAPI</code> is supported only if the
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EGL version is 1.2 or greater.
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</p>
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<p>
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The initial value of the current rendering API is
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<code class="constant">EGL_OPENGL_ES_API</code> unless OpenGL ES is
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not supported by an implementation, in which case the
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initial value is <code class="constant">EGL_NONE</code> (however,
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<code class="constant">EGL_NONE</code> is not a valid
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<em class="parameter"><code>api</code></em> parameter to
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<code class="function">eglQueryAPI</code>).
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</p>
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<p>
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The current rendering API can be changed by calling
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<a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>.
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</p>
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</div>
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<div class="refsect1" id="errors">
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<h2>Errors</h2>
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<p>
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None.
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</p>
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</div>
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<div class="refsect1" id="seealso">
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<h2>See Also</h2>
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<p>
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<a class="citerefentry" href="eglBindAPI.xhtml"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>,
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<a class="citerefentry" href="eglCreateContext.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreateContext</span></span></a>,
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<a class="citerefentry" href="eglGetCurrentContext.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentContext</span></span></a>,
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<a class="citerefentry" href="eglGetCurrentDisplay.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentDisplay</span></span></a>,
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<a class="citerefentry" href="eglGetCurrentSurface.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetCurrentSurface</span></span></a>,
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<a class="citerefentry" href="eglMakeCurrent.xhtml"><span class="citerefentry"><span class="refentrytitle">eglMakeCurrent</span></span></a>,
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<a class="citerefentry" href="eglWaitClient.xhtml"><span class="citerefentry"><span class="refentrytitle">eglWaitClient</span></span></a>,
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<a class="citerefentry" href="eglWaitNative.xhtml"><span class="citerefentry"><span class="refentrytitle">eglWaitNative</span></span></a>
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</p>
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</div>
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<p>
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</p>
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<div class="refsect3" id="copyright">
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<img src="KhronosLogo.jpg"/>
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<p>
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Copyright © 2003-2014 The Khronos Group Inc.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and/or associated documentation files (the
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"Materials"), to deal in the Materials without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Materials, and to
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permit persons to whom the Materials are furnished to do so, subject to
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the condition that this copyright notice and permission notice shall be included
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in all copies or substantial portions of the Materials.
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</p>
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</div>
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<p>
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</p>
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</div>
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<footer/>
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</body>
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</html>
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