<?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="glPopDebugGroup">
    <refmeta>
        <refmetainfo>
            <copyright>
                <year>2012</year>
                <holder>Khronos Group</holder>
            </copyright>
        </refmetainfo>
        <refentrytitle>glPopDebugGroup</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glPopDebugGroup</refname>
        <refpurpose>pop the active debug group</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>void <function>glPopDebugGroup</function></funcdef>
                <paramdef>void</paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <refsect1 id="description"><title>Description</title>
        <para>
            <function>glPopDebugGroup</function> pops the active debug group.
            After popping a debug group, the GL will also generate a debug
            output message describing its cause based on the <parameter>message</parameter>
            string, the source <parameter>source</parameter>, and an ID <parameter>id</parameter>
            submitted to the corresponding <citerefentry><refentrytitle>glPushDebugGroup</refentrytitle></citerefentry>
            command. <constant>GL_DEBUG_TYPE_PUSH_GROUP</constant> and <constant>GL_DEBUG_TYPE_POP_GROUP</constant>
            share a single namespace for message <parameter>id</parameter>.
            <parameter>severity</parameter> has the value <constant>GL_DEBUG_SEVERITY_NOTIFICATION</constant>. The <parameter>type</parameter>
            has the value <constant>GL_DEBUG_TYPE_POP_GROUP</constant>. Popping a debug group restores
            the debug output volume control of the parent debug group.
        </para>
    </refsect1>
    <refsect1 id="errors"><title>Errors</title>
        <para>
            <constant>GL_STACK_UNDERFLOW</constant> is generated if an attempt is made to pop the default debug
            group from the stack.
        </para>
    </refsect1>
    <refsect1 id="associatedgets"><title>Associated Gets</title>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MAX_DEBUG_MESSAGE_LENGTH</constant>.
        </para>
    </refsect1>
    <refsect1 id="seealso"><title>See Also</title>
        <para>
            <citerefentry><refentrytitle>glPushDebugGroup</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glObjectLabel</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glObjectPtrLabel</refentrytitle></citerefentry>.
        </para>
    </refsect1>
    <refsect1 id="Copyright"><title>Copyright</title>
        <para>
            Copyright <trademark class="copyright"></trademark> 2012 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>
