125 lines
5.5 KiB
XML
125 lines
5.5 KiB
XML
<?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="glMatrixMode">
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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>glMatrixMode</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glMatrixMode</refname>
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<refpurpose>specify which matrix is the current matrix</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>void <function>glMatrixMode</function></funcdef>
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<paramdef>GLenum <parameter>mode</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>mode</parameter></term>
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<listitem>
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<para>
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Specifies which matrix stack is the target
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for subsequent matrix operations.
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Three values are accepted:
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<constant>GL_MODELVIEW</constant>,
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<constant>GL_PROJECTION</constant>, and
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<constant>GL_TEXTURE</constant>.
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The initial value is <constant>GL_MODELVIEW</constant>.
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Additionally, if the <code>ARB_imaging</code> extension is supported,
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<constant>GL_COLOR</constant> is also accepted.
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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>glMatrixMode</function> sets the current matrix mode.
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<parameter>mode</parameter> can assume one of four values:
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</para>
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<variablelist>
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<varlistentry>
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<term><constant>GL_MODELVIEW</constant></term>
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<listitem>
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<para>
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Applies subsequent matrix operations to the modelview matrix stack.
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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><constant>GL_PROJECTION</constant></term>
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<listitem>
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<para>
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Applies subsequent matrix operations to the projection matrix stack.
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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><constant>GL_TEXTURE</constant></term>
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<listitem>
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<para>
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Applies subsequent matrix operations to the texture matrix stack.
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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><constant>GL_COLOR</constant></term>
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<listitem>
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<para>
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Applies subsequent matrix operations to the color matrix stack.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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To find out which matrix stack is currently the target of all matrix
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operations, call <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MATRIX_MODE</constant>. The initial
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value is <constant>GL_MODELVIEW</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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<constant>GL_INVALID_ENUM</constant> is generated if <parameter>mode</parameter> is not an accepted value.
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</para>
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<para>
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<constant>GL_INVALID_OPERATION</constant> is generated if <function>glMatrixMode</function>
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is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
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and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
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</para>
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</refsect1>
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<refsect1 id="associatedgets"><title>Associated Gets</title>
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<para>
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<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MATRIX_MODE</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>glLoadMatrix</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glMultMatrix</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glMultTransposeMatrix</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glPopMatrix</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glPushMatrix</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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