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<!DOCTYPE refentry [ <!ENTITY % mathent SYSTEM "math.ent"> %mathent; ]>
<!-- Converted by db4-upgrade version 1.1 -->
<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glEnableVertexAttribArray">
<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>glEnableVertexAttribArray</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refdescriptor>glEnableVertexAttribArray</refdescriptor>
<refname>glEnableVertexAttribArray</refname>
<refname>glDisableVertexAttribArray</refname>
<refname>glEnableVertexArrayAttrib</refname>
<refname>glDisableVertexArrayAttrib</refname>
<refpurpose>Enable or disable a generic vertex attribute
array</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glEnableVertexAttribArray</function></funcdef>
<paramdef>GLuint <parameter>index</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>void <function>glDisableVertexAttribArray</function></funcdef>
<paramdef>GLuint <parameter>index</parameter></paramdef>
</funcprototype>
<!-- DSA commands -->
<funcprototype>
<funcdef>void <function>glEnableVertexArrayAttrib</function></funcdef>
<paramdef>GLuint <parameter>vaobj</parameter></paramdef>
<paramdef>GLuint <parameter>index</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>void <function>glDisableVertexArrayAttrib</function></funcdef>
<paramdef>GLuint <parameter>vaobj</parameter></paramdef>
<paramdef>GLuint <parameter>index</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 xml:id="parameters">
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>vaobj</parameter></term>
<listitem>
<para>Specifies the name of the vertex array object for
<function>glDisableVertexArrayAttrib</function> and
<function>glEnableVertexArrayAttrib</function> functions.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>index</parameter></term>
<listitem>
<para>Specifies the index of the generic vertex attribute to be
enabled or disabled.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 xml:id="description">
<title>Description</title>
<para><function>glEnableVertexAttribArray</function> and
<function>glEnableVertexArrayAttrib</function> enable the generic vertex
attribute array specified by <parameter>index</parameter>.
<function>glEnableVertexAttribArray</function> uses currently bound vertex
array object for the operation, whereas
<function>glEnableVertexArrayAttrib</function> updates state of the vertex
array object with ID <parameter>vaobj</parameter>.</para>
<para><function>glDisableVertexAttribArray</function> and
<function>glDisableVertexArrayAttrib</function> disable the generic vertex
attribute array specified by <parameter>index</parameter>.
<function>glDisableVertexAttribArray</function> uses currently bound
vertex array object for the operation, whereas
<function>glDisableVertexArrayAttrib</function> updates state of the
vertex array object with ID <parameter>vaobj</parameter>.</para>
<para>
By default, all client-side capabilities are disabled, including all
generic vertex attribute arrays. If enabled, the values in the generic
vertex attribute array will be accessed and used for rendering when calls
are made to vertex array commands such as
<citerefentry><refentrytitle>glDrawArrays</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDrawElements</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glMultiDrawElements</refentrytitle></citerefentry>, or
<citerefentry><refentrytitle>glMultiDrawArrays</refentrytitle></citerefentry>.
</para>
</refsect1>
<refsect1 xml:id="errors">
<title>Errors</title>
<para><constant>GL_INVALID_OPERATION</constant> is generated by
<function>glEnableVertexAttribArray</function> and
<function>glDisableVertexAttribArray</function> if no vertex array object
is bound.</para>
<para><constant>GL_INVALID_OPERATION</constant> is generated by
<function>glEnableVertexArrayAttrib</function> and
<function>glDisableVertexArrayAttrib</function> if
<parameter>vaobj</parameter> is not the name of an existing vertex array
object.</para>
<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>
</refsect1>
<refsect1 xml:id="associatedgets">
<title>Associated Gets</title>
<para>
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument
<constant>GL_MAX_VERTEX_ATTRIBS</constant>
</para>
<para><citerefentry><refentrytitle>glGetVertexAttrib</refentrytitle></citerefentry> with arguments <parameter>index</parameter> and
<constant>GL_VERTEX_ATTRIB_ARRAY_ENABLED</constant> <parameter/>
</para>
<para>
<citerefentry><refentrytitle>glGetVertexAttribPointerv</refentrytitle></citerefentry> with arguments <parameter>index</parameter> and
<constant>GL_VERTEX_ATTRIB_ARRAY_POINTER</constant>
</para>
</refsect1>
<refsect1 xml:id="versions"><title>Version Support</title>
<informaltable>
<tgroup cols="13" align="left">
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apifunchead.xml" xpointer="xpointer(/*/*)"/>
<tbody>
<row>
<entry><function>glDisableVertexArrayAttrib</function></entry>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='45']/*)"/>
</row>
<row>
<entry><function>glDisableVertexAttribArray</function></entry>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='20']/*)"/>
</row>
<row>
<entry><function>glEnableVertexArrayAttrib</function></entry>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='45']/*)"/>
</row>
<row>
<entry><function>glEnableVertexAttribArray</function></entry>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='20']/*)"/>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 xml:id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glBindAttribLocation</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDrawArrays</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDrawElements</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glMultiDrawElements</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glVertexAttribPointer</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>
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