+<?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="glColorMaterial">
+ <refmeta>
+ <refmetainfo>
+ <copyright>
+ <year>1991-2006</year>
+ <holder>Silicon Graphics, Inc.</holder>
+ </copyright>
+ </refmetainfo>
+ <refentrytitle>glColorMaterial</refentrytitle>
+ <manvolnum>3G</manvolnum>
+ </refmeta>
+ <refnamediv>
+ <refname>glColorMaterial</refname>
+ <refpurpose>cause a material color to track the current color</refpurpose>
+ </refnamediv>
+ <refsynopsisdiv><title>C Specification</title>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>void <function>glColorMaterial</function></funcdef>
+ <paramdef>GLenum <parameter>face</parameter></paramdef>
+ <paramdef>GLenum <parameter>mode</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+ <refsect1 id="parameters"><title>Parameters</title>
+ <variablelist>
+ <varlistentry>
+ <term><parameter>face</parameter></term>
+ <listitem>
+ <para>
+ Specifies whether front,
+ back,
+ or both front and back material parameters should track the current color.
+ Accepted values are
+ <constant>GL_FRONT</constant>,
+ <constant>GL_BACK</constant>,
+ and <constant>GL_FRONT_AND_BACK</constant>.
+ The initial value is <constant>GL_FRONT_AND_BACK</constant>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>mode</parameter></term>
+ <listitem>
+ <para>
+ Specifies which of several material parameters track the current color.
+ Accepted values are
+ <constant>GL_EMISSION</constant>,
+ <constant>GL_AMBIENT</constant>,
+ <constant>GL_DIFFUSE</constant>,
+ <constant>GL_SPECULAR</constant>,
+ and <constant>GL_AMBIENT_AND_DIFFUSE</constant>.
+ The initial value is <constant>GL_AMBIENT_AND_DIFFUSE</constant>.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+ <refsect1 id="description"><title>Description</title>
+ <para>
+ <function>glColorMaterial</function> specifies which material parameters track the current color.
+ When <constant>GL_COLOR_MATERIAL</constant> is enabled,
+ the material parameter or parameters specified by <parameter>mode</parameter>,
+ of the material or materials specified by <parameter>face</parameter>,
+ track the current color at all times.
+ </para>
+ <para>
+ To enable and disable <constant>GL_COLOR_MATERIAL</constant>, call
+ <citerefentry><refentrytitle>glEnable</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glDisable</refentrytitle></citerefentry> with argument <constant>GL_COLOR_MATERIAL</constant>.
+ <constant>GL_COLOR_MATERIAL</constant> is initially disabled.
+ </para>
+ </refsect1>
+ <refsect1 id="notes"><title>Notes</title>
+ <para>
+ <function>glColorMaterial</function> makes it possible to change a subset of material parameters for each
+ vertex using only the <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry> command,
+ without calling <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>.
+ If only such a subset of parameters is to be specified for each
+ vertex, calling <function>glColorMaterial</function> is preferable to calling <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>.
+ </para>
+ <para>
+ Call <function>glColorMaterial</function> before enabling <constant>GL_COLOR_MATERIAL</constant>.
+ </para>
+ <para>
+ Calling <citerefentry><refentrytitle>glDrawElements</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glDrawArrays</refentrytitle></citerefentry>, or <citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>
+ may leave the current color indeterminate, if the color array is enabled.
+ If
+ <function>glColorMaterial</function> is enabled while the current color is indeterminate, the
+ lighting material state specified by <parameter>face</parameter> and <parameter>mode</parameter> is also indeterminate.
+ </para>
+ <para>
+ If the GL version is 1.1 or greater, and <constant>GL_COLOR_MATERIAL</constant> is
+ enabled, evaluated color values affect the results of the lighting
+ equation as if the current color were being modified, but no change is
+ made to the tracking lighting parameter of the current color.
+ </para>
+ </refsect1>
+ <refsect1 id="errors"><title>Errors</title>
+ <para>
+ <constant>GL_INVALID_ENUM</constant> is generated if <parameter>face</parameter> or <parameter>mode</parameter> is not an
+ accepted value.
+ </para>
+ <para>
+ <constant>GL_INVALID_OPERATION</constant> is generated if <function>glColorMaterial</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>glIsEnabled</refentrytitle></citerefentry> with argument <constant>GL_COLOR_MATERIAL</constant>
+ </para>
+ <para>
+ <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_COLOR_MATERIAL_PARAMETER</constant>
+ </para>
+ <para>
+ <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_COLOR_MATERIAL_FACE</constant>
+ </para>
+ </refsect1>
+ <refsect1 id="seealso"><title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glDrawArrays</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glDrawElements</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glEnable</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>,
+ <citerefentry><refentrytitle>glMaterial</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>