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<title>memoryBarrierAtomicCounter - OpenGL 4 Reference Pages</title>
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<div class="refentry" id="memoryBarrierAtomicCounter">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>memoryBarrierAtomicCounter — controls the ordering of operations on atomic counters issued by a single shader invocation</p>
</div>
<div class="refsynopsisdiv">
<h2>Declaration</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">memoryBarrierAtomicCounter</strong>(</code>
</td>
<td>void<code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">memoryBarrierAtomicCounter</code> waits on the completion of all accesses resulting from the use of
atomic counters and then returns with no other effect. When this function returns, the
results of any modifications to the value of atomic counters will be visible
to any access to the same counter from other shader invocations. In particular,
any modifications made in one shader stage are guaranteed to be visible to accesses
performed by shader invocations in subsequent stages when those invocations were triggered by the
execution of the original shader invocation (e.g., fragment shader invocations for a primitive resulting
from a particular geometry shader invocation).
</p>
</div>
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
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<span class="bold"><strong>Function Name</strong></span>
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<span class="bold"><strong>1.10</strong></span>
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<span class="bold"><strong>1.50</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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<span class="bold"><strong>4.30</strong></span>
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<span class="bold"><strong>4.40</strong></span>
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<span class="bold"><strong>4.50</strong></span>
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<td style="text-align: left; border-right: 2px solid ; ">memoryBarrierAtomicCounter</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; ">✔</td>
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</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="memoryBarrier.xhtml"><span class="citerefentry"><span class="refentrytitle">memoryBarrier</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 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="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
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