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88 lines
3.6 KiB
XML
88 lines
3.6 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="glXQueryExtension">
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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>glXQueryExtension</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glXQueryExtension</refname>
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<refpurpose>indicate whether the GLX extension 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>Bool <function>glXQueryExtension</function></funcdef>
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<paramdef>Display * <parameter>dpy</parameter></paramdef>
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<paramdef>int * <parameter>errorBase</parameter></paramdef>
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<paramdef>int * <parameter>eventBase</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<!-- eqn: ignoring delim $$ -->
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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>dpy</parameter></term>
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<listitem>
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<para>
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Specifies the connection to the X server.
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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>errorBase</parameter></term>
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<listitem>
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<para>
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Returns the base error code of the GLX server extension.
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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>eventBase</parameter></term>
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<listitem>
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<para>
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Returns the base event code of the GLX server extension.
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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>glXQueryExtension</function> returns <constant>True</constant> if the X server of
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connection <parameter>dpy</parameter> supports the GLX extension,
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<constant>False</constant> otherwise.
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If <constant>True</constant> is returned,
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then <parameter>errorBase</parameter> and <parameter>eventBase</parameter> return the error base and event base of
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the GLX extension. These values should be added to the constant
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error and event values to determine the actual event or error values.
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Otherwise, <parameter>errorBase</parameter> and <parameter>eventBase</parameter> are unchanged.
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</para>
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<para>
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<parameter>errorBase</parameter> and <parameter>eventBase</parameter> do not return values if they are specified
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as <constant>NULL</constant>.
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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>glXQueryVersion</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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