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1 | <?xml version="1.0" encoding="UTF-8"?> |
2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> | |
3 | <!-- saved from url=(0013)about:internet --> | |
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>gl_LocalInvocationIndex - 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="gl_LocalInvocationIndex"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>gl_LocalInvocationIndex — contains the local linear index of work item currently being operated on by a compute shader</p></div><div class="refsynopsisdiv"><h2>Declaration</h2><div class="funcsynopsis"><code class="function">in uint gl_LocalInvocationIndex</code></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p> | |
5 | In the compute language, <code class="function">gl_LocalInvocationIndex</code> | |
6 | is a derived input variable containing the 1-dimensional linearized index of the | |
7 | work invocation within the work group that the current shader is | |
8 | executing on. The value of <code class="function">gl_LocalInvocationIndex</code> is equal to | |
9 | <code class="function">gl_LocalInvocationID.z</code> * <code class="function">gl_WorkGroupSize.x</code> * <code class="function">gl_WorkGroupSize.y</code> + | |
10 | <code class="function">gl_LocalInvocationID.y</code> * <code class="function">gl_WorkGroupSize.x</code> + | |
11 | <code class="function">gl_LocalInvocationID.x</code>. | |
12 | </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>Variable</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">gl_LocalInvocationIndex</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>-</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> | |
13 | <a href="gl_NumWorkGroups.xml"><span class="citerefentry"><span class="refentrytitle">gl_NumWorkGroups</span></span></a>, | |
14 | <a href="gl_WorkGroupID.xml"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupID</span></span></a>, | |
15 | <a href="gl_WorkGroupSize.xml"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupSize</span></span></a>, | |
16 | <a href="gl_LocalInvocationID.xml"><span class="citerefentry"><span class="refentrytitle">gl_LocalInvocationID</span></span></a> | |
17 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p> | |
18 | Copyright <span class="trademark"></span>© 2011-2012 Khronos Group. | |
19 | This material may be distributed subject to the terms and conditions set forth in | |
20 | the Open Publication License, v 1.0, 8 June 1999. | |
21 | <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>. | |
22 | </p></div></div></body></html> |