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94 lines
3.8 KiB
XML
94 lines
3.8 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="glXQueryVersion">
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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>glXQueryVersion</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glXQueryVersion</refname>
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<refpurpose>return the version numbers of the GLX extension</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>glXQueryVersion</function></funcdef>
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<paramdef>Display * <parameter>dpy</parameter></paramdef>
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<paramdef>int * <parameter>major</parameter></paramdef>
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<paramdef>int * <parameter>minor</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>major</parameter></term>
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<listitem>
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<para>
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Returns the major version number 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>minor</parameter></term>
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<listitem>
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<para>
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Returns the minor version number 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>glXQueryVersion</function> returns the major and minor version numbers of the GLX extension
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implemented by the server associated with connection <parameter>dpy</parameter>.
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Implementations with the same major version number are upward compatible,
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meaning that the implementation with the higher minor number is a superset
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of the version with the lower minor number.
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</para>
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<para>
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<parameter>major</parameter> and <parameter>minor</parameter> do not return values if they are specified as
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<constant>NULL</constant>.
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</para>
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</refsect1>
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<refsect1 id="errors"><title>Errors</title>
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<para>
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<function>glXQueryVersion</function> returns <constant>False</constant> if it fails,
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<constant>True</constant> otherwise.
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</para>
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<para>
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<parameter>major</parameter> and <parameter>minor</parameter> are not updated when <constant>False</constant> is returned.
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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>glXQueryExtension</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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