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<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glIsSync">
    <info>
        <copyright>
            <year>2010-2013</year>
            <holder>Khronos Group</holder>
        </copyright>
    </info>
    <refmeta>
        <refentrytitle>glIsSync</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glIsSync</refname>
        <refpurpose>determine if a name corresponds to a sync object</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>GLboolean <function>glIsSync</function></funcdef>
                <paramdef>GLsync <parameter>sync</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <refsect1 xml:id="parameters"><title>Parameters</title>
        <variablelist>
        <varlistentry>
            <term><parameter>sync</parameter></term>
            <listitem>
                <para>
                    Specifies a value that may be the name of a sync object.
                </para>
            </listitem>
        </varlistentry>
        </variablelist>
    </refsect1>
    <refsect1 xml:id="description"><title>Description</title>
        <para>
            <function>glIsSync</function> returns <constant>GL_TRUE</constant> if <parameter>sync</parameter> is currently the name of a sync object.
            If <parameter>sync</parameter> is not the name of a sync object, or if an error occurs, <function>glIsSync</function> returns
            <constant>GL_FALSE</constant>. Note that zero is not the name of a sync object.
        </para>
    </refsect1>
    <refsect1 xml:id="notes"><title>Notes</title>
        <para>
            <function>glIsSync</function> is available only if the GL version is 3.2 or greater.
        </para>
    </refsect1>
    <refsect1 xml:id="seealso"><title>See Also</title>
        <para>
            <citerefentry><refentrytitle>glFenceSync</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glWaitSync</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glClientWaitSync</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glDeleteSync</refentrytitle></citerefentry>
        </para>
    </refsect1>
    <refsect1 xml:id="Copyright"><title>Copyright</title>
        <para>
            Copyright <trademark class="copyright"/> 2010-2013 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.
            <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://opencontent.org/openpub/">http://opencontent.org/openpub/</link>.
        </para>
    </refsect1>
</refentry>
