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94 lines
4.1 KiB
XML
94 lines
4.1 KiB
XML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
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"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
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<refentry id="gluCheckExtension">
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<refmeta>
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<refmetainfo>
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<copyright>
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<year>1991-2006</year>
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<holder>Silicon Graphics, Inc.</holder>
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</copyright>
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</refmetainfo>
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<refentrytitle>gluCheckExtension</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>gluCheckExtension</refname>
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<refpurpose>determines if an extension name is supported</refpurpose>
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</refnamediv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>GLboolean <function>gluCheckExtension</function></funcdef>
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<paramdef>const GLubyte * <parameter>extName</parameter></paramdef>
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<paramdef>const GLubyte * <parameter>extString</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1 id="parameters"><title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><parameter>extName</parameter></term>
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<listitem>
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<para>
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Specifies an extension name.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>extString</parameter></term>
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<listitem>
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<para>
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Specifies a space-separated list of extension names supported.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id="description"><title>Description</title>
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<para>
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<function>gluCheckExtension</function> returns <constant>GLU_TRUE</constant> if <parameter>extName</parameter> is supported otherwise
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<constant>GLU_FALSE</constant> is returned.
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</para>
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<para>
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This is used to check for the presence for OpenGL, GLU, or GLX extension names
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by passing the extension strings returned by <citerefentry><refentrytitle>glGetString</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>gluGetString</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glXGetClientString</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glXQueryExtensionsString</refentrytitle></citerefentry>, or <citerefentry><refentrytitle>glXQueryServerString</refentrytitle></citerefentry>,
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respectively, as <parameter>extString</parameter>.
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</para>
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</refsect1>
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<refsect1 id="notes"><title>Notes</title>
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<para>
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Cases where one extension name is a substring of another are
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correctly handled.
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</para>
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<para>
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There may or may not be leading or trailing blanks in <parameter>extString</parameter>.
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</para>
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<para>
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Extension names should not contain embedded spaces.
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</para>
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<para>
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All strings are null-terminated.
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</para>
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</refsect1>
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<refsect1 id="seealso"><title>See Also</title>
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<para>
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<citerefentry><refentrytitle>gluGetString</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glGetString</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glXGetClientString</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glXQueryExtensionsString</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glXQueryServerString</refentrytitle></citerefentry>
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</para>
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</refsect1>
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<refsect1 id="Copyright"><title>Copyright</title>
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<para>
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Copyright <trademark class="copyright"></trademark> 1991-2006
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Silicon Graphics, Inc. This document is licensed under the SGI
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Free Software B License. For details, see
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<ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
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</para>
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</refsect1>
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</refentry>
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