<?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="glGetVertexAttribPointerv">
    <refmeta>
	<refentrytitle>glGetVertexAttribPointerv</refentrytitle>
	<manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
	<refname>glGetVertexAttribPointerv</refname>
	<refpurpose>return the address of the specified generic vertex attribute pointer</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
	<funcsynopsis>
	    <funcprototype>
		<funcdef>void <function>glGetVertexAttribPointerv</function></funcdef>
		<paramdef>GLuint <parameter>index</parameter></paramdef>
		<paramdef>GLenum <parameter>pname</parameter></paramdef>
		<paramdef>GLvoid **<parameter>pointer</parameter></paramdef>
	    </funcprototype>
	</funcsynopsis>
    </refsynopsisdiv>
    <refsect1 id="parameters"><title>Parameters</title>
	<variablelist>
	    <varlistentry>
		<term><parameter>index</parameter></term>
		<listitem>
		    <para>Specifies the generic vertex attribute
		    parameter to be returned.</para>
		</listitem>
	    </varlistentry>
	    <varlistentry>
		<term><parameter>pname</parameter></term>
		<listitem>
		    <para>Specifies the symbolic name of the generic
		    vertex attribute parameter to be returned. Must be
		    <constant>GL_VERTEX_ATTRIB_ARRAY_POINTER</constant>.</para>
		</listitem>
	    </varlistentry>
	    <varlistentry>
		<term><parameter>pointer</parameter></term>
		<listitem>
		    <para>Returns the pointer value.</para>
		</listitem>
	    </varlistentry>
	</variablelist>
    </refsect1>
    <refsect1 id="description"><title>Description</title>
	<para><function>glGetVertexAttribPointerv</function> returns
	pointer information. <parameter>index</parameter> is the generic
	vertex attribute to be queried, <parameter>pname</parameter> is
	a symbolic constant indicating the pointer to be returned, and
	<parameter>params</parameter> is a pointer to a location in
	which to place the returned data.</para>

        <para>If a non-zero named buffer object was bound to the <constant>GL_ARRAY_BUFFER</constant> target 
        (see <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>) when the desired pointer was previously
        specified, the <parameter>pointer</parameter> returned is a byte offset into the buffer object's data store.
        </para>
    </refsect1>
    <refsect1 id="notes"><title>Notes</title>
	<para><function>glGetVertexAttribPointerv</function>
	is available only if the GL version is 2.0 or greater.</para>

	<para>The pointer returned is client-side state.</para>

	<para>The initial value for each pointer is 0.</para>
    </refsect1>
    <refsect1 id="errors"><title>Errors</title>
	<para><constant>GL_INVALID_VALUE</constant>
	is generated if <parameter>index</parameter>
	is greater than or equal to <constant>GL_MAX_VERTEX_ATTRIBS</constant>.</para>

	<para><constant>GL_INVALID_ENUM</constant>
	is generated if <parameter>pname</parameter>
	is not an accepted value.</para>
    </refsect1>
    <refsect1 id="associatedgets"><title>Associated Gets</title>
	<para><citerefentry><refentrytitle>glGet</refentrytitle></citerefentry>
	with argument <constant>GL_MAX_VERTEX_ATTRIBS</constant></para>
    </refsect1>
    <refsect1 id="seealso"><title>See Also</title>
	<para><citerefentry><refentrytitle>glGetVertexAttrib</refentrytitle></citerefentry>,
	<citerefentry><refentrytitle>glVertexAttribPointer</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>
