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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry id="glGetObjectPtrLabel">
<refentryinfo>
<copyright>
<year>2013</year>
<holder>Khronos Group</holder>
</copyright>
</refentryinfo>
<refmeta>
<refentrytitle>glGetObjectPtrLabel</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refname>glGetObjectPtrLabel</refname>
<refpurpose>retrieve the label of a sync object identified by a pointer</refpurpose>
</refnamediv>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glGetObjectPtrLabel</function></funcdef>
<paramdef>void * <parameter>ptr</parameter></paramdef>
<paramdef>GLsizei <parameter>bifSize</parameter></paramdef>
<paramdef>GLsizei * <parameter>length</parameter></paramdef>
<paramdef>char * <parameter>label</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>ptr</parameter></term>
<listitem>
<para>
The name of the sync object whose label to retrieve.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>bufSize</parameter></term>
<listitem>
<para>
The length of the buffer whose address is in <parameter>label</parameter>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>length</parameter></term>
<listitem>
<para>
The address of a variable to receive the length of the object label.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>label</parameter></term>
<listitem>
<para>
The address of a string that will receive the object label.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="description"><title>Description</title>
<para>
<function>glGetObjectPtrLabel</function> retrieves the label of the sync object identified by
<parameter>ptr</parameter>.
</para>
<para>
<parameter>label</parameter> is the address of a string that will be used to store the object label.
<parameter>bufSize</parameter> specifies the number of characters in the array identified by <parameter>label</parameter>.
<parameter>length</parameter> contains the address of a variable which will receive the the number of characters in the object label.
If <parameter>length</parameter> is NULL, then it is ignored and no data is written. Likewise, if <parameter>label</parameter>
is NULL, or if <parameter>bufSize</parameter> is zero then no data is written to <parameter>label</parameter>.
</para>
</refsect1>
<refsect1 id="errors"><title>Errors</title>
<para>
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>identifier</parameter>
is not one of the accepted object types.
</para>
<para>
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>ptr</parameter>
is not the name of an existing sync object.
</para>
<para>
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>bufSize</parameter> is
zero.
</para>
<para>
If not NULL, <parameter>length</parameter> and <parameter>label</parameter> should be addresses
to which the client has write access, otherwise undefined behavior, including process termination
may occur.
</para>
</refsect1>
<refsect1 id="associatedgets"><title>Associated Gets</title>
<para>
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MAX_LABEL_LENGTH</constant>.
</para>
</refsect1>
<refsect1 id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glPushDebugGroup</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glPopDebugGroup</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glObjectLabel</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glGetObjectLabel</refentrytitle></citerefentry>.
</para>
</refsect1>
<refsect1 id="Copyright"><title>Copyright</title>
<para>
Copyright <trademark class="copyright"></trademark> 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.
<ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
</para>
</refsect1>
</refentry>
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