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OpenGL ES 1.0 and EGL 1.0 reference manual and man pages (written by
Claude Knaus, based on OpenGL SI man pages).

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.2//EN" "DTD/docbook/docbookx.dtd">

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<refentry id="glMatrixMode">
  <refmeta>
    <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>
    <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>.</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <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>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>Errors</title>

    <para><constant>GL_INVALID_ENUM</constant> is generated if 
    <parameter>mode</parameter> is not an accepted value.</para>
  </refsect1>

  <refsect1>
    <title>See Also</title>

    <para>
    <citerefentry><refentrytitle>glLoadMatrix</refentrytitle></citerefentry>, 
    <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>
    </para>
  </refsect1>
</refentry>