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<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glGetAttachedShaders">
    <info>
        <copyright>
            <year>2003-2005</year>
            <holder>3Dlabs Inc. Ltd.</holder>
        </copyright>
        <copyright>
            <year>2010-2014</year>
            <holder>Khronos Group</holder>
        </copyright>
    </info>
    <refmeta>
        <refentrytitle>glGetAttachedShaders</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glGetAttachedShaders</refname>
        <refpurpose>Returns the handles of the shader objects attached to a program object</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
    <funcsynopsis>
        <funcprototype>
        <funcdef>void <function>glGetAttachedShaders</function></funcdef>
        <paramdef>GLuint <parameter>program</parameter></paramdef>
        <paramdef>GLsizei <parameter>maxCount</parameter></paramdef>
        <paramdef>GLsizei *<parameter>count</parameter></paramdef>
        <paramdef>GLuint *<parameter>shaders</parameter></paramdef>
        </funcprototype>
    </funcsynopsis>
    </refsynopsisdiv>
    <refsect1 xml:id="parameters"><title>Parameters</title>
    <variablelist>
        <varlistentry>
        <term><parameter>program</parameter></term>
        <listitem>
            <para>Specifies the program object to be
            queried.</para>
        </listitem>
        </varlistentry>
        <varlistentry>
        <term><parameter>maxCount</parameter></term>
        <listitem>
            <para>Specifies the size of the array for storing
            the returned object names.</para>
        </listitem>
        </varlistentry>
        <varlistentry>
        <term><parameter>count</parameter></term>
        <listitem>
            <para>Returns the number of names actually returned
            in <parameter>shaders</parameter>.</para>
        </listitem>
        </varlistentry>
        <varlistentry>
        <term><parameter>shaders</parameter></term>
        <listitem>
            <para>Specifies an array that is used to return the
            names of attached shader objects.</para>
        </listitem>
        </varlistentry>
    </variablelist>
    </refsect1>
    <refsect1 xml:id="description"><title>Description</title>
    <para><function>glGetAttachedShaders</function> returns the
    names of the shader objects attached to
    <parameter>program</parameter>. The names of shader objects that
    are attached to <parameter>program</parameter> will be returned
    in <parameter>shaders.</parameter> The actual number of shader
    names written into <parameter>shaders</parameter> is returned in
    <parameter>count.</parameter> If no shader objects are attached
    to <parameter>program</parameter>, <parameter>count</parameter>
    is set to 0. The maximum number of shader names that may be
    returned in <parameter>shaders</parameter> is specified by
    <parameter>maxCount</parameter>. </para>

    <para>If the number of names actually returned is not required
    (for instance, if it has just been obtained by calling
    <citerefentry><refentrytitle>glGetProgramiv</refentrytitle></citerefentry>),
    a value of <constant>NULL</constant> may be passed for count. If
    no shader objects are attached to
    <parameter>program</parameter>, a value of 0 will be returned in
    <parameter>count</parameter>. The actual number of attached
    shaders can be obtained by calling
    <citerefentry><refentrytitle>glGetProgramiv</refentrytitle></citerefentry>
    with the value <constant>GL_ATTACHED_SHADERS</constant>.</para>
    </refsect1>
    <refsect1 xml:id="errors"><title>Errors</title>
    <para><constant>GL_INVALID_VALUE</constant> is generated if
    <parameter>program</parameter> is not a value generated by
    OpenGL.</para>

    <para><constant>GL_INVALID_OPERATION</constant> is generated if
    <parameter>program</parameter> is not a program object.</para>

    <para><constant>GL_INVALID_VALUE</constant> is generated if
    <parameter>maxCount</parameter> is less than 0.</para>

    </refsect1>
    <refsect1 xml:id="associatedgets"><title>Associated Gets</title>
    <para><citerefentry><refentrytitle>glGetProgramiv</refentrytitle></citerefentry>
    with argument <constant>GL_ATTACHED_SHADERS</constant></para>

    <para><citerefentry><refentrytitle>glIsProgram</refentrytitle></citerefentry></para>
    </refsect1>
    <refsect1 xml:id="versions">
        <title>API Version Support</title>
        <informaltable>
            <tgroup cols="3" align="left">
                <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apifunchead.xml" xpointer="xpointer(/*/*)"/>
                <tbody>
                    <row>
                        <entry>glGetAttachedShaders</entry>
                        <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='es20']/*)"/>
                    </row>
                </tbody>
            </tgroup>
        </informaltable>
    </refsect1>
    <refsect1 xml:id="seealso"><title>See Also</title>
        <para><citerefentry><refentrytitle>glAttachShader</refentrytitle></citerefentry>,
        <citerefentry><refentrytitle>glDetachShader</refentrytitle></citerefentry>.</para>
    </refsect1>
    <refsect1 xml:id="Copyright"><title>Copyright</title>
        <para>
            Copyright <trademark class="copyright"/> 2003-2005 3Dlabs Inc. Ltd.
            Copyright <trademark class="copyright"/> 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.
            <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://opencontent.org/openpub/">http://opencontent.org/openpub/</link>.
        </para>
    </refsect1>
</refentry>
