1 <?xml version=
"1.0" encoding=
"UTF-8"?>
2 <!DOCTYPE book PUBLIC
"-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
3 "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
4 <refentry id=
"gluCheckExtension">
9 <holder>Silicon Graphics, Inc.
</holder>
12 <refentrytitle>gluCheckExtension
</refentrytitle>
13 <manvolnum>3G
</manvolnum>
16 <refname>gluCheckExtension
</refname>
17 <refpurpose>determines if an extension name is supported
</refpurpose>
19 <refsynopsisdiv><title>C Specification
</title>
22 <funcdef>GLboolean
<function>gluCheckExtension
</function></funcdef>
23 <paramdef>const GLubyte *
<parameter>extName
</parameter></paramdef>
24 <paramdef>const GLubyte *
<parameter>extString
</parameter></paramdef>
28 <refsect1 id=
"parameters"><title>Parameters
</title>
31 <term><parameter>extName
</parameter></term>
34 Specifies an extension name.
39 <term><parameter>extString
</parameter></term>
42 Specifies a space-separated list of extension names supported.
48 <refsect1 id=
"description"><title>Description
</title>
50 <function>gluCheckExtension
</function> returns
<constant>GLU_TRUE
</constant> if
<parameter>extName
</parameter> is supported otherwise
51 <constant>GLU_FALSE
</constant> is returned.
54 This is used to check for the presence for OpenGL, GLU, or GLX extension names
55 by passing the extension strings returned by
<citerefentry><refentrytitle>glGetString
</refentrytitle></citerefentry>,
56 <citerefentry><refentrytitle>gluGetString
</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glXGetClientString
</refentrytitle></citerefentry>,
57 <citerefentry><refentrytitle>glXQueryExtensionsString
</refentrytitle></citerefentry>, or
<citerefentry><refentrytitle>glXQueryServerString
</refentrytitle></citerefentry>,
58 respectively, as
<parameter>extString
</parameter>.
61 <refsect1 id=
"notes"><title>Notes
</title>
63 Cases where one extension name is a substring of another are
67 There may or may not be leading or trailing blanks in
<parameter>extString
</parameter>.
70 Extension names should not contain embedded spaces.
73 All strings are null-terminated.
76 <refsect1 id=
"seealso"><title>See Also
</title>
78 <citerefentry><refentrytitle>gluGetString
</refentrytitle></citerefentry>,
79 <citerefentry><refentrytitle>glGetString
</refentrytitle></citerefentry>,
80 <citerefentry><refentrytitle>glXGetClientString
</refentrytitle></citerefentry>,
81 <citerefentry><refentrytitle>glXQueryExtensionsString
</refentrytitle></citerefentry>,
82 <citerefentry><refentrytitle>glXQueryServerString
</refentrytitle></citerefentry>
85 <refsect1 id=
"Copyright"><title>Copyright
</title>
87 Copyright
<trademark class=
"copyright"></trademark> 1991-
2006
88 Silicon Graphics, Inc. This document is licensed under the SGI
89 Free Software B License. For details, see
90 <ulink url=
"http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/
</ulink>.