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<div class="refentry" id="imageAtomicAdd">
<div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>imageAtomicAdd — atomically add a value to an existing value in memory and return the original value</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">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage1D <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2D <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage3D <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DRect <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimageCube <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gbufferImage <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage1DArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimageCubeArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DMS <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">sample</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">uint <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DMSArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">sample</var>, </td>
</tr>
<tr>
<td> </td>
<td>uint <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage1D <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2D <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage3D <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DRect <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimageCube <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gbufferImage <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage1DArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimageCubeArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DMS <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec2 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">sample</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">int <strong class="fsfunc">imageAtomicAdd</strong>(</code>
</td>
<td>gimage2DMSArray <var class="pdparam">image</var>, </td>
</tr>
<tr>
<td> </td>
<td>ivec3 <var class="pdparam">P</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">sample</var>, </td>
</tr>
<tr>
<td> </td>
<td>int <var class="pdparam">data</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="parameters">
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>image</code>
</em>
</span>
</dt>
<dd>
<p>
Specify the image unit into which to add <em class="parameter"><code>data</code></em>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>P</code>
</em>
</span>
</dt>
<dd>
<p>
Specify the coordinate at which to add the data.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>sample</code>
</em>
</span>
</dt>
<dd>
<p>
When present, specifies the sample within the image to add into.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>data</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the data to add into the image.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">imageAtomicAdd</code> atomically computes a new value by adding the value of <em class="parameter"><code>data</code></em>
to the contents of the texel at coordinate <em class="parameter"><code>P</code></em> and <em class="parameter"><code>sample</code></em> in the
image bound to uint <em class="parameter"><code>image</code></em>, stores that value into the image and returns the original value.
</p>
</div>
{$pipelinestall}{$examples}
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; "/>
<col style="text-align: center; " class="firstvers"/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; " class="lastvers"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; ">
</th>
<th style="text-align: center; border-bottom: 2px solid ; " colspan="12">
<span class="bold"><strong>OpenGL Shading Language Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.10</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.20</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.30</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.40</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.50</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.30</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.00</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.10</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.20</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.30</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.40</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.50</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">imageAtomicAdd</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; 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; 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; 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>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="imageLoad"><span class="citerefentry"><span class="refentrytitle">imageLoad</span></span></a>,
<a class="citerefentry" href="imageStore"><span class="citerefentry"><span class="refentrytitle">imageStore</span></span></a>,
<a class="citerefentry" href="imageAtomicMin"><span class="citerefentry"><span class="refentrytitle">imageAtomicMin</span></span></a>,
<a class="citerefentry" href="imageAtomicMax"><span class="citerefentry"><span class="refentrytitle">imageAtomicMax</span></span></a>,
<a class="citerefentry" href="imageAtomicAnd"><span class="citerefentry"><span class="refentrytitle">imageAtomicAnd</span></span></a>,
<a class="citerefentry" href="imageAtomicOr"><span class="citerefentry"><span class="refentrytitle">imageAtomicOr</span></span></a>,
<a class="citerefentry" href="imageAtomicXor"><span class="citerefentry"><span class="refentrytitle">imageAtomicXor</span></span></a>,
<a class="citerefentry" href="imageAtomicExchange"><span class="citerefentry"><span class="refentrytitle">imageAtomicExchange</span></span></a>,
<a class="citerefentry" href="imageAtomicCompSwap"><span class="citerefentry"><span class="refentrytitle">imageAtomicCompSwap</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="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
</div>
</div>