rename upstream-man-pages to upstream-doc

[clinton/guile-figl.git] / upstream-doc / man3 / glBlendColor.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="glBlendColor">
+    <refmeta>
+        <refmetainfo>
+            <copyright>
+                <year>1991-2006</year>
+                <holder>Silicon Graphics, Inc.</holder>
+            </copyright>
+        </refmetainfo>
+        <refentrytitle>glBlendColor</refentrytitle>
+        <manvolnum>3G</manvolnum>
+    </refmeta>
+    <refnamediv>
+        <refname>glBlendColor</refname>
+        <refpurpose>set the blend color</refpurpose>
+    </refnamediv>
+    <refsynopsisdiv><title>C Specification</title>
+        <funcsynopsis>
+            <funcprototype>
+                <funcdef>void <function>glBlendColor</function></funcdef>
+                <paramdef>GLclampf <parameter>red</parameter></paramdef>
+                <paramdef>GLclampf <parameter>green</parameter></paramdef>
+                <paramdef>GLclampf <parameter>blue</parameter></paramdef>
+                <paramdef>GLclampf <parameter>alpha</parameter></paramdef>
+            </funcprototype>
+        </funcsynopsis>
+    </refsynopsisdiv>
+    <!-- eqn: ignoring delim $$ -->
+    <refsect1 id="parameters"><title>Parameters</title>
+        <variablelist>
+        <varlistentry>
+            <term><parameter>red</parameter></term>
+            <term><parameter>green</parameter></term>
+            <term><parameter>blue</parameter></term>
+            <term><parameter>alpha</parameter></term>
+            <listitem>
+                <para>
+                    specify the components of <constant>GL_BLEND_COLOR</constant>
+                </para>
+            </listitem>
+        </varlistentry>
+        </variablelist>
+    </refsect1>
+    <refsect1 id="description"><title>Description</title>
+        <para>
+            The <constant>GL_BLEND_COLOR</constant> may be used to calculate the source and destination
+            blending factors. The color components are clamped to the range 
+            <inlineequation><mml:math>
+                <!-- eqn: [0,1]: -->
+                <mml:mfenced open="[" close="]">
+                    <mml:mn>0</mml:mn>
+                    <mml:mn>1</mml:mn>
+                </mml:mfenced>
+            </mml:math></inlineequation>
+            before being stored. See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> for a complete description of the
+            blending operations.
+            Initially the <constant>GL_BLEND_COLOR</constant> is set to (0, 0, 0, 0).
+        </para>
+    </refsect1>
+    <refsect1 id="associatedgets"><title>Associated Gets</title>
+        <para>
+            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with an argument of <constant>GL_BLEND_COLOR</constant>
+        </para>
+    </refsect1>
+    <refsect1 id="seealso"><title>See Also</title>
+        <para>
+            <citerefentry><refentrytitle>glBlendEquation</refentrytitle></citerefentry>,
+            <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry>,
+            <citerefentry><refentrytitle>glGetString</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>