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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<head>
<title>glPrimitiveRestartIndex - OpenGL 4 Reference Pages</title>
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<div class="refentry" id="glPrimitiveRestartIndex">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>glPrimitiveRestartIndex — specify the primitive restart index</p>
</div>
<div class="refsynopsisdiv">
<h2>C Specification</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">glPrimitiveRestartIndex</strong>(</code>
</td>
<td>GLuint <var class="pdparam">index</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>index</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the value to be interpreted as the primitive restart index.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">glPrimitiveRestartIndex</code> specifies a vertex array element that is treated specially when
primitive restarting is enabled. This is known as the primitive restart index.
</p>
<p>
When one of the <code class="function">Draw*</code> commands transfers a set of generic attribute array elements to
the GL, if the index within the vertex arrays corresponding to that set is equal to the primitive restart
index, then the GL does not process those elements as a vertex. Instead, it is as if the drawing command
ended with the immediately preceding transfer, and another drawing command is immediately started with
the same parameters, but only transferring the immediately following element through the end of the
originally specified elements.
</p>
<p>
When either <a class="citerefentry" href="glDrawElementsBaseVertex.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>,
<a class="citerefentry" href="glDrawElementsInstancedBaseVertex.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstancedBaseVertex</span></span></a> or
<a class="citerefentry" href="glMultiDrawElementsBaseVertex.xhtml"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElementsBaseVertex</span></span></a> is used, the primitive restart
comparison occurs before the basevertex offset is added to the array index.
</p>
</div>
<div class="refsect1" id="notes">
<h2>Notes</h2>
<p>
<code class="function">glPrimitiveRestartIndex</code> is available only if the GL version is 3.1 or greater.
</p>
</div>
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
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<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 Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function / Feature Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.1</strong></span>
</th>
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<span class="bold"><strong>3.0</strong></span>
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<span class="bold"><strong>3.1</strong></span>
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<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.3</strong></span>
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<span class="bold"><strong>4.0</strong></span>
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<span class="bold"><strong>4.1</strong></span>
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<span class="bold"><strong>4.2</strong></span>
</th>
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<span class="bold"><strong>4.3</strong></span>
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<span class="bold"><strong>4.4</strong></span>
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<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.5</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="function">glPrimitiveRestartIndex</code>
</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="glDrawArrays.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>,
<a class="citerefentry" href="glDrawElements.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
<a class="citerefentry" href="glDrawElementsBaseVertex.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>,
<a class="citerefentry" href="glDrawElementsInstancedBaseVertex.xhtml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstancedBaseVertex</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 2010-2014 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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