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1 | <?xml version="1.0" encoding="UTF-8"?>\r |
2 | <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"\r | |
3 | "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">\r | |
4 | <refentry id="unpackHalf2x16">\r | |
5 | <refmeta>\r | |
6 | <refmetainfo>\r | |
7 | <copyright>\r | |
8 | <year>2011</year>\r | |
9 | <holder>Khronos Group</holder>\r | |
10 | </copyright>\r | |
11 | </refmetainfo>\r | |
12 | <refentrytitle>unpackHalf2x16</refentrytitle>\r | |
13 | <manvolnum>3G</manvolnum>\r | |
14 | </refmeta>\r | |
15 | <refnamediv>\r | |
16 | <refname>unpackHalf2x16</refname>\r | |
17 | <refpurpose>convert two 16-bit floating-point values packed into a single 32-bit integer into a vector of two 32-bit floating-point quantities</refpurpose>\r | |
18 | </refnamediv>\r | |
19 | <refsynopsisdiv><title>Declaration</title>\r | |
20 | <funcsynopsis>\r | |
21 | <funcprototype>\r | |
22 | <funcdef>vec2 <function>unpackHalf2x16</function></funcdef>\r | |
23 | <paramdef>uint <parameter>v</parameter></paramdef>\r | |
24 | </funcprototype>\r | |
25 | </funcsynopsis>\r | |
26 | </refsynopsisdiv>\r | |
27 | <refsect1 id="parameters"><title>Parameters</title>\r | |
28 | <variablelist>\r | |
29 | <varlistentry>\r | |
30 | <term><parameter>v</parameter></term>\r | |
31 | <listitem>\r | |
32 | <para>\r | |
33 | Specify a single 32-bit unsigned integer values that contains two 16-bit floating point values to be unpacked.\r | |
34 | </para>\r | |
35 | </listitem>\r | |
36 | </varlistentry>\r | |
37 | </variablelist>\r | |
38 | </refsect1>\r | |
39 | <refsect1 id="description"><title>Description</title>\r | |
40 | <para>\r | |
41 | <function>unpackHalf2x16</function> returns a two-component floating-point vector with\r | |
42 | components obtained by unpacking a 32-bit unsigned\r | |
43 | integer into a pair of 16-bit values, interpreting those\r | |
44 | values as 16-bit floating-point numbers according to the\r | |
45 | OpenGL Specification, and converting them to 32-bit\r | |
46 | floating-point values.\r | |
47 | The first component of the vector is obtained from the\r | |
48 | 16 least-significant bits of v; the second component is\r | |
49 | obtained from the 16 most-significant bits of v.\r | |
50 | </para>\r | |
51 | </refsect1>\r | |
52 | <refsect1 id="versions"><title>Version Support</title>\r | |
53 | <informaltable frame="topbot">\r | |
54 | #VARTABLECOLS#\r | |
55 | <thead>\r | |
56 | #FUNCTABLEHEADER#\r | |
57 | <row>\r | |
58 | <entry>unpackHalf2x16</entry>#newin42#\r | |
59 | </row>\r | |
60 | </thead>\r | |
61 | </tgroup>\r | |
62 | </informaltable>\r | |
63 | </refsect1>\r | |
64 | <refsect1 id="seealso"><title>See Also</title>\r | |
65 | <para>\r | |
66 | <citerefentry><refentrytitle>packDouble2x32</refentrytitle></citerefentry>,\r | |
67 | <citerefentry><refentrytitle>unpackDouble2x32</refentrytitle></citerefentry>,\r | |
68 | <citerefentry><refentrytitle>packHalf2x16</refentrytitle></citerefentry>\r | |
69 | </para>\r | |
70 | </refsect1>\r | |
71 | <refsect1 id="Copyright"><title>Copyright</title>\r | |
72 | <para>\r | |
73 | Copyright <trademark class="copyright"></trademark> 2011 Khronos Group. \r | |
74 | This material may be distributed subject to the terms and conditions set forth in \r | |
75 | the Open Publication License, v 1.0, 8 June 1999.\r | |
76 | <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.\r | |
77 | </para>\r | |
78 | </refsect1>\r | |
79 | </refentry>\r |