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<?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>glIsSync</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glIsSync"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glIsSync — determine if a name corresponds to a sync object</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><p><code class="funcdef">GLboolean <b class="fsfunc">glIsSync</b>(</code>GLsync <var class="pdparam">sync</var><code>)</code>;</p></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>sync</code></em></span></dt><dd><p>
                    Specifies a value that may be the name of a sync object.
                </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
            <code class="function">glIsSync</code> returns <code class="constant">GL_TRUE</code> if <em class="parameter"><code>sync</code></em> is currently the name of a sync object.
            If <em class="parameter"><code>sync</code></em> is not the name of a sync object, or if an error occurs, <code class="function">glIsSync</code> returns
            <code class="constant">GL_FALSE</code>. Note that zero is not the name of a sync object.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>
            <code class="function">glIsSync</code> is available only if the GL version is 3.2 or greater.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
            <a href="glFenceSync.xml"><span class="citerefentry"><span class="refentrytitle">glFenceSync</span></span></a>,
            <a href="glWaitSync.xml"><span class="citerefentry"><span class="refentrytitle">glWaitSync</span></span></a>,
            <a href="glClientWaitSync.xml"><span class="citerefentry"><span class="refentrytitle">glClientWaitSync</span></span></a>,
            <a href="glDeleteSync.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteSync</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
            Copyright <span class="trademark"></span>© 2010 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 href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
        </p></div></div></body></html>
