upstream-doc/manglsl/xhtml/unpackHalf2x16.xml

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   4 <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>unpackHalf2x16 - OpenGL Shading Language (GLSL)</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="unpackHalf2x16"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>unpackHalf2x16 — convert two 16-bit floating-point values packed into a single 32-bit integer into a vector of two 32-bit floating-point quantities</p></div><div class="refsynopsisdiv"><h2>Declaration</h2><div class="funcsynopsis"><p><code class="funcdef">vec2 <b class="fsfunc">unpackHalf2x16</b>(</code>uint <var class="pdparam">v</var><code>)</code>;</p></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>v</code></em></span></dt><dd><p>
   5                     Specify a single 32-bit unsigned integer values that contains two 16-bit floating point values to be unpacked.
   6                 </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
   7             <code class="function">unpackHalf2x16</code> returns  a two-component floating-point vector with
   8             components obtained by unpacking a 32-bit unsigned
   9             integer into a pair of 16-bit values, interpreting those
  10             values as 16-bit floating-point numbers according to the
  11             OpenGL Specification, and converting them to 32-bit
  12             floating-point values.
  13             The first component of the vector is obtained from the
  14             16 least-significant bits of v; the second component is
  15             obtained from the 16 most-significant bits of v.
  16         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="versions"></a><h2>Version Support</h2><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /></colgroup><thead><tr><th align="left"><span class="bold"><strong>Function</strong></span></th><th align="left"><span class="bold"><strong>Version 1.10</strong></span></th><th align="left"><span class="bold"><strong>Version 1.20</strong></span></th><th align="left"><span class="bold"><strong>Version 1.30</strong></span></th><th align="left"><span class="bold"><strong>Version 1.40</strong></span></th><th align="left"><span class="bold"><strong>Version 1.50</strong></span></th><th align="left"><span class="bold"><strong>Version 3.30</strong></span></th><th align="left"><span class="bold"><strong>Version 4.00</strong></span></th><th align="left"><span class="bold"><strong>Version 4.10</strong></span></th><th align="left"><span class="bold"><strong>Version 4.20</strong></span></th><th align="center"><span class="bold"><strong>Version 4.30</strong></span></th></tr><tr><th align="left">unpackHalf2x16</th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th></tr></thead></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
  17             <a href="packDouble2x32.xml"><span class="citerefentry"><span class="refentrytitle">packDouble2x32</span></span></a>,
  18             <a href="unpackDouble2x32.xml"><span class="citerefentry"><span class="refentrytitle">unpackDouble2x32</span></span></a>,
  19             <a href="packHalf2x16.xml"><span class="citerefentry"><span class="refentrytitle">packHalf2x16</span></span></a>
  20         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
  21             Copyright <span class="trademark"></span>© 2011 Khronos Group.
  22             This material may be distributed subject to the terms and conditions set forth in
  23             the Open Publication License, v 1.0, 8 June 1999.
  24             <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
  25         </p></div></div></body></html>