<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html
  PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd">
<html
	xmlns="http://www.w3.org/1999/xhtml"
	xmlns:mml="http://www.w3.org/1998/Math/MathML"
><head><title>glutExtensionSupported</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GLUT.xml" title="GLUT"/><link rel="previous" href="glutEstablishOverlay.3GLUT.xml" title="glutEstablishOverlay"/><link rel="next" href="glutForceJoystickFunc.3GLUT.xml" title="glutForceJoystickFunc"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">glutExtensionSupported</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glutEstablishOverlay.3GLUT.xml">Prev</a> </td><th width="60%" align="center">GLUT</th><td width="20%" align="right"> <a accesskey="n" href="glutForceJoystickFunc.3GLUT.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glutExtensionSupported.3GLUT"/><div class="titlepage"/><div class="refnamediv"><a name="glutExtensionSupported.3GLUT-name"/><h2>Name</h2><p>glutExtensionSupported &#8212; helps to easily determine whether a given OpenGL extension is supported.</p></div><div class="refsynopsisdiv"><a name="glutExtensionSupported.3GLUT-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>int <tt>glutExtensionSupported</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>char *<i><tt>extension</tt></i>);</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glutExtensionSupported.3GLUT-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glutExtensionSupported</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>extension</tt></i>) &#8594; <tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glutExtensionSupported.3GLUT-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>extension</tt></i></span></dt><dd>
						Name of OpenGL extension.
					</dd></dl></div></div><div class="refsect1" lang="en"><a name="glutExtensionSupported.3GLUT-description"/><h2>Description</h2><p>
			<tt>glutExtensionSupported</tt> helps to easily determine whether a given OpenGL extension is supported or
			not. The extension parameter names the extension to query. The supported extensions can also be determined with
			<tt>glGetString(GL_EXTENSIONS)</tt>, but <tt>glutExtensionSupported</tt>
			does the correct parsing of the returned string.
		</p><p>
			<tt>glutExtensionSupported</tt> returns non-zero if the extension is supported, zero if not supported.
		</p><p>
			There must be a valid current window to call <tt>glutExtensionSupported</tt>.
		</p><p>
			<tt>glutExtensionSupported</tt> only returns information about OpenGL extensions only. This means window
			system dependent extensions (for example, GLX extensions) are not reported by
			<tt>glutExtensionSupported</tt>.
		</p></div><div class="refsect1" lang="en"><a name="glutExtensionSupported.3GLUT-example"/><h2>Example</h2><p>
			Here is an example of using glutExtensionSupported:
		</p><pre class="programlisting">if (!glutExtensionSupported("GL_EXT_texture")) {
    fprintf(stderr, "Missing the texture extension!);
    exit(1);
}</pre><p>
			Notice that the name argument includes both the GL prefix and the extension family prefix (EXT).
		</p></div><div class="refsect1" lang="en"><a name="glutExtensionSupported.3GLUT-see_also"/><h2>See Also</h2><p>
			<span class="simplelist"><a href="glutGet.3GLUT.xml">glutGet</a>, <a href="glGetString.3G.xml">glGetString</a></span>
		</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="glutEstablishOverlay.3GLUT.xml">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="reference-GLUT.xml">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="glutForceJoystickFunc.3GLUT.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glutEstablishOverlay </td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top"> glutForceJoystickFunc</td></tr></table></div></body></html>