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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title xmlns:xlink="http://www.w3.org/1999/xlink">eglGetConfigs - EGL Reference Pages</title>
<link rel="stylesheet" type="text/css" href="khronos-man.css"/>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"/>
</head>
<body>
<header/>
<div class="refentry" id="eglGetConfigs">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>eglGetConfigs —
return a list of all <abbr class="acronym">EGL</abbr> frame buffer configurations
for a display
</p>
</div>
<div class="refsynopsisdiv">
<h2>C Specification</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">EGLBoolean <strong class="fsfunc">eglGetConfigs</strong>(</code>
</td>
<td>EGLDisplay <var class="pdparam">display</var>, </td>
</tr>
<tr>
<td> </td>
<td>EGLConfig * <var class="pdparam">configs</var>, </td>
</tr>
<tr>
<td> </td>
<td>EGLint <var class="pdparam">config_size</var>, </td>
</tr>
<tr>
<td> </td>
<td>EGLint * <var class="pdparam">num_config</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="parameters">
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>display</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the EGL display connection.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>configs</code>
</em>
</span>
</dt>
<dd>
<p>Returns a list of configs.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>config_size</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the size of the list of configs.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>num_config</code>
</em>
</span>
</dt>
<dd>
<p>Returns the number of configs returned.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">eglGetConfigs</code> returns a list of all
EGL frame buffer configurations that are available for the specified
display.
The items in the list can be used in any EGL function that requires
an EGL frame buffer configuration.
</p>
<p>
<em class="parameter"><code>configs</code></em> does not return values, if it is specified
as
<code class="constant">NULL</code>. This is useful for querying just the
number of all frame buffer configurations.
</p>
<p>
Use
<a class="citerefentry" href="eglGetConfigAttrib.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetConfigAttrib</span></span></a>
to retrieve individual attribute values of a frame buffer configuration.
</p>
</div>
<div class="refsect1" id="errors">
<h2>Errors</h2>
<p>
<code class="constant">EGL_FALSE</code> is returned on failure,
<code class="constant">EGL_TRUE</code> otherwise.
<em class="parameter"><code>configs</code></em> and <em class="parameter"><code>num_config</code></em>
are not modified when
<code class="constant">EGL_FALSE</code> is returned.
</p>
<p>
<code class="constant">EGL_BAD_DISPLAY</code> is generated if
<em class="parameter"><code>display</code></em> is not an EGL display connection.
</p>
<p>
<code class="constant">EGL_NOT_INITIALIZED</code> is generated if
<em class="parameter"><code>display</code></em> has not been initialized.
</p>
<p>
<code class="constant">EGL_BAD_PARAMETER</code> is generated if
<em class="parameter"><code>num_config</code></em> is <code class="constant">NULL</code>.
</p>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="eglCreateContext.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreateContext</span></span></a>,
<a class="citerefentry" href="eglCreatePbufferSurface.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreatePbufferSurface</span></span></a>,
<a class="citerefentry" href="eglCreatePixmapSurface.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreatePixmapSurface</span></span></a>,
<a class="citerefentry" href="eglCreateWindowSurface.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCreateWindowSurface</span></span></a>,
<a class="citerefentry" href="eglChooseConfig.xhtml"><span class="citerefentry"><span class="refentrytitle">eglChooseConfig</span></span></a>,
<a class="citerefentry" href="eglGetConfigAttrib.xhtml"><span class="citerefentry"><span class="refentrytitle">eglGetConfigAttrib</span></span></a>
</p>
</div>
<p>
</p>
<div class="refsect3" id="copyright">
<img src="KhronosLogo.jpg"/>
<p>
Copyright © 2003-2014 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.
</p>
</div>
<p>
</p>
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