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glMatrixMode.xml
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glMatrixMode.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry id="glMatrixMode">
<refmeta>
<refmetainfo>
<copyright>
<year>1991-2006</year>
<holder>Silicon Graphics, Inc.</holder>
</copyright>
</refmetainfo>
<refentrytitle>glMatrixMode</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refname>glMatrixMode</refname>
<refpurpose>specify which matrix is the current matrix</refpurpose>
</refnamediv>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glMatrixMode</function></funcdef>
<paramdef>GLenum <parameter>mode</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>mode</parameter></term>
<listitem>
<para>
Specifies which matrix stack is the target
for subsequent matrix operations.
Three values are accepted:
<constant>GL_MODELVIEW</constant>,
<constant>GL_PROJECTION</constant>, and
<constant>GL_TEXTURE</constant>.
The initial value is <constant>GL_MODELVIEW</constant>.
Additionally, if the <code>ARB_imaging</code> extension is supported,
<constant>GL_COLOR</constant> is also accepted.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="description"><title>Description</title>
<para>
<function>glMatrixMode</function> sets the current matrix mode.
<parameter>mode</parameter> can assume one of four values:
</para>
<variablelist>
<varlistentry>
<term><constant>GL_MODELVIEW</constant></term>
<listitem>
<para>
Applies subsequent matrix operations to the modelview matrix stack.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>GL_PROJECTION</constant></term>
<listitem>
<para>
Applies subsequent matrix operations to the projection matrix stack.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>GL_TEXTURE</constant></term>
<listitem>
<para>
Applies subsequent matrix operations to the texture matrix stack.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>GL_COLOR</constant></term>
<listitem>
<para>
Applies subsequent matrix operations to the color matrix stack.
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
To find out which matrix stack is currently the target of all matrix
operations, call <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MATRIX_MODE</constant>. The initial
value is <constant>GL_MODELVIEW</constant>.
</para>
</refsect1>
<refsect1 id="errors"><title>Errors</title>
<para>
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>mode</parameter> is not an accepted value.
</para>
<para>
<constant>GL_INVALID_OPERATION</constant> is generated if <function>glMatrixMode</function>
is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
</para>
</refsect1>
<refsect1 id="associatedgets"><title>Associated Gets</title>
<para>
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MATRIX_MODE</constant>
</para>
</refsect1>
<refsect1 id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glLoadMatrix</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glMultMatrix</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glMultTransposeMatrix</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glPopMatrix</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>
</para>
</refsect1>
<refsect1 id="Copyright"><title>Copyright</title>
<para>
Copyright <trademark class="copyright"></trademark> 1991-2006
Silicon Graphics, Inc. This document is licensed under the SGI
Free Software B License. For details, see
<ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
</para>
</refsect1>
</refentry>