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<refentry id="glGetAttachedShaders">
    <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 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>objects</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 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>glGetProgram</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>glGetProgram</refentrytitle></citerefentry>
	with the value <constant>GL_ATTACHED_SHADERS</constant>.</para>
    </refsect1>
    <refsect1 id="notes"><title>Notes</title>
	<para><function>glGetAttachedShaders</function>
	is available only if the GL version is 2.0 or greater.</para>
    </refsect1>
    <refsect1 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>

	<para><constant>GL_INVALID_OPERATION</constant> is generated if
	<citerefentry><refentrytitle>glGetAttachedShaders</refentrytitle></citerefentry>
	is executed between the execution of
	<citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
	and the corresponding execution of
	<citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.</para>
    </refsect1>
    <refsect1 id="associatedgets"><title>Associated Gets</title>
	<para><citerefentry><refentrytitle>glGetProgram</refentrytitle></citerefentry>
	with argument <constant>GL_ATTACHED_SHADERS</constant></para>

	<para><citerefentry><refentrytitle>glIsProgram</refentrytitle></citerefentry></para>
    </refsect1>
    <refsect1 id="seealso"><title>See Also</title>
	<para><citerefentry><refentrytitle>glAttachShader</refentrytitle></citerefentry>,
	<citerefentry><refentrytitle>glDetachShader</refentrytitle></citerefentry></para>.
    </refsect1>
    <refsect1 id="Copyright"><title>Copyright</title>
        <para>
            Copyright <trademark class="copyright"></trademark> 2003-2005 3Dlabs Inc. Ltd. 
            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>
