<div class="refentry" id="gl_LocalInvocationID">

<div class="titlepage"></div>

<div class="refnamediv">

<h2>Name</h2>

<p>gl_LocalInvocationID — contains the index of work item currently being operated on by a compute shader</p>

</div>

<div class="refsynopsisdiv">

<h2>Declaration</h2>

<code class="fieldsynopsis"><span class="modifier">in </span><span class="type">uvec3 </span><span class="varname">gl_LocalInvocationID </span>;</code>

</div>

<div class="refsect1" id="description">

<h2>Description</h2>

<p>

In the compute language, <code class="varname">gl_LocalInvocationID</code>

is an input variable containing the n-dimensional index of the local

work invocation within the work group that the current shader is

executing in. The possible values for this variable range across

the local work group size, i.e., (0,0,0) to (<code class="varname">gl_WorkGroupSize.x</code> - 1,

<code class="varname">gl_WorkGroupSize.y</code> - 1, <code class="varname">gl_WorkGroupSize.z</code> - 1).

</p>

</div>

{$pipelinestall}{$examples}

<div class="refsect1" id="versions">

<h2>Version Support</h2>

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<span class="bold"><strong>OpenGL Shading Language Version</strong></span>

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<span class="bold"><strong>Variable Name</strong></span>

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<span class="bold"><strong>1.10</strong></span>

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<span class="bold"><strong>1.20</strong></span>

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<span class="bold"><strong>1.30</strong></span>

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<span class="bold"><strong>1.40</strong></span>

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<span class="bold"><strong>1.50</strong></span>

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<span class="bold"><strong>3.30</strong></span>

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<span class="bold"><strong>4.00</strong></span>

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<span class="bold"><strong>4.10</strong></span>

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<span class="bold"><strong>4.20</strong></span>

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<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">

<span class="bold"><strong>4.30</strong></span>

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<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">

<span class="bold"><strong>4.40</strong></span>

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<th style="text-align: center; border-bottom: 2px solid ; ">

<span class="bold"><strong>4.50</strong></span>

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<tbody>

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<td style="text-align: left; border-right: 2px solid ; ">gl_LocalInvocationID</td>

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<td style="text-align: center; border-right: 2px solid ; ">-</td>

<td style="text-align: center; border-right: 2px solid ; ">✔</td>

<td style="text-align: center; border-right: 2px solid ; ">✔</td>

<td style="text-align: center; ">✔</td>

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</div>

<div class="refsect1" id="seealso">

<h2>See Also</h2>

<p>

<a class="citerefentry" href="gl_NumWorkGroups"><span class="citerefentry"><span class="refentrytitle">gl_NumWorkGroups</span></span></a>,

<a class="citerefentry" href="gl_WorkGroupID"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupID</span></span></a>,

<a class="citerefentry" href="gl_WorkGroupSize"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupSize</span></span></a>,

<a class="citerefentry" href="gl_GlobalInvocationID"><span class="citerefentry"><span class="refentrytitle">gl_GlobalInvocationID</span></span></a>

</p>

</div>

<div class="refsect1" id="Copyright">

<h2>Copyright</h2>

<p>

Copyright © 2011-2014 Khronos Group.

This material may be distributed subject to the terms and conditions set forth in

the Open Publication License, v 1.0, 8 June 1999.

<a class="link" href="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.

</p>

</div>

</div>