upstream-man-pages/manglsl/xhtml/gl_GlobalInvocationID.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>gl_GlobalInvocationID - 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_LocalInvocationID"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>gl_GlobalInvocationID — contains the global 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 uvec3 gl_GlobalInvocationID</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_GlobalInvocationID</code>
   6             is a derived input variable containing the n-dimensional index of the
   7             work invocation within the global work group that the current shader is
   8             executing on. The value of <code class="function">gl_GlobalInvocationID</code> is equal to
   9             <code class="function">gl_WorkGroupID</code> * <code class="function">gl_WorkGroupSize</code> + <code class="function">gl_LocalInvocationID</code>.
  10         </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_GlobalInvocationID</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>
  11             <a href="gl_NumWorkGroups.xml"><span class="citerefentry"><span class="refentrytitle">gl_NumWorkGroups</span></span></a>,
  12             <a href="gl_WorkGroupID.xml"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupID</span></span></a>,
  13             <a href="gl_WorkGroupSize.xml"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupSize</span></span></a>,
  14             <a href="gl_LocalInvocationID.xml"><span class="citerefentry"><span class="refentrytitle">gl_LocalInvocationID</span></span></a>
  15         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
  16             Copyright <span class="trademark"></span>© 2011-2012 Khronos Group.
  17             This material may be distributed subject to the terms and conditions set forth in
  18             the Open Publication License, v 1.0, 8 June 1999.
  19             <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
  20         </p></div></div></body></html>