--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>\r
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"\r
+ "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">\r
+<refentry id="unpackUnorm">\r
+ <refmeta>\r
+ <refmetainfo>\r
+ <copyright>\r
+ <year>2011</year>\r
+ <holder>Khronos Group</holder>\r
+ </copyright>\r
+ </refmetainfo>\r
+ <refentrytitle>unpackUnorm</refentrytitle>\r
+ <manvolnum>3G</manvolnum>\r
+ </refmeta>\r
+ <refnamediv>\r
+ <refname>unpackUnorm2x16, unpackUnorm4x8, unpackSnorm4x8</refname>\r
+ <refpurpose>unpack floating-point values from an unsigned integer</refpurpose>\r
+ </refnamediv>\r
+ <refsynopsisdiv><title>Declaration</title>\r
+ <funcsynopsis>\r
+ <funcprototype>\r
+ <funcdef>vec2 <function>unpackUnorm2x16</function></funcdef>\r
+ <paramdef>uint <parameter>p</parameter></paramdef>\r
+ </funcprototype>\r
+ <funcprototype>\r
+ <funcdef>vec2 <function>unpackSnorm2x16</function></funcdef>\r
+ <paramdef>uint <parameter>p</parameter></paramdef>\r
+ </funcprototype>\r
+ <funcprototype>\r
+ <funcdef>vec4 <function>unpackUnorm4x8</function></funcdef>\r
+ <paramdef>uint <parameter>p</parameter></paramdef>\r
+ </funcprototype>\r
+ <funcprototype>\r
+ <funcdef>vec4 <function>unpackSnorm4x8</function></funcdef>\r
+ <paramdef>uint <parameter>p</parameter></paramdef>\r
+ </funcprototype>\r
+ </funcsynopsis>\r
+ </refsynopsisdiv>\r
+ <refsect1 id="parameters"><title>Parameters</title>\r
+ <variablelist>\r
+ <varlistentry>\r
+ <term><parameter>p</parameter></term>\r
+ <listitem>\r
+ <para>\r
+ Specifies an unsigned integer containing packed floating-point values.\r
+ </para>\r
+ </listitem>\r
+ </varlistentry>\r
+ </variablelist>\r
+ </refsect1>\r
+ <refsect1 id="description"><title>Description</title>\r
+ <para>\r
+ <function>unpackUnorm2x16</function>, <function>unpackSnorm2x16</function>, <function>unpackUnorm4x8</function> and <function>unpackSnorm4x8</function> unpack\r
+ single 32-bit unsigned integers, specified in the parameter <parameter>p</parameter> into a pair of 16-bit unsigned integers,\r
+ four 8-bit unsigned integers or four 8-bit signed integers. Then, each component is converted to a normalized floating-point\r
+ value to generate the returned two- or four-component vector.\r
+ </para>\r
+ <para>\r
+ The conversion for unpacked fixed point value <emphasis>f</emphasis> to floating-point is performed as follows:\r
+ <itemizedlist>\r
+ <listitem><function>packUnorm2x16</function>: <code>f / 65535.0</code></listitem>\r
+ <listitem><function>packSnorm2x16</function>: <code><citerefentry><refentrytitle>clamp</refentrytitle></citerefentry>(f / 32727.0, -1.0, 1.0)</code></listitem>\r
+ <listitem><function>packUnorm4x8</function>: <code>f / 255.0</code></listitem>\r
+ <listitem><function>packSnorm4x8</function>: <code><citerefentry><refentrytitle>clamp</refentrytitle></citerefentry>(f / 127.0, -1.0, 1.0)</code></listitem>\r
+ </itemizedlist>\r
+ </para>\r
+ <para>\r
+ The first component of the returned vector will be extracted from the least significant bits of the input;\r
+ the last component will be extracted from the most significant bits.\r
+ </para>\r
+ </refsect1>\r
+ <refsect1 id="versions"><title>Version Support</title>\r
+ <informaltable frame="topbot">\r
+ #VARTABLECOLS#\r
+ <thead>\r
+ #FUNCTABLEHEADER#\r
+ <row>\r
+ <entry>unpackUnorm2x16</entry>#newin41#\r
+ </row>\r
+ <row>\r
+ <entry>unpackSnorm2x16</entry>#newin42#\r
+ </row>\r
+ <row>\r
+ <entry>unpackUnorm4x8</entry>#newin41#\r
+ </row>\r
+ <row>\r
+ <entry>unpackSnorm4x8</entry>#newin41#\r
+ </row>\r
+ </thead>\r
+ </tgroup>\r
+ </informaltable>\r
+ </refsect1>\r
+ <refsect1 id="seealso"><title>See Also</title>\r
+ <para>\r
+ <citerefentry><refentrytitle>packUnorm2x16</refentrytitle></citerefentry>,\r
+ <citerefentry><refentrytitle>packUnorm4x8</refentrytitle></citerefentry>,\r
+ <citerefentry><refentrytitle>packSnorm4x8</refentrytitle></citerefentry>\r
+ </para>\r
+ </refsect1>\r
+ <refsect1 id="Copyright"><title>Copyright</title>\r
+ <para>\r
+ Copyright <trademark class="copyright"></trademark> 2011 Khronos Group. \r
+ This material may be distributed subject to the terms and conditions set forth in \r
+ the Open Publication License, v 1.0, 8 June 1999.\r
+ <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.\r
+ </para>\r
+ </refsect1>\r
+</refentry>\r