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.\"     Title: gl_VertexID
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 01/03/2018
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "GL_VERTEXID" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.SH "NAME"
gl_VertexID \- contains the index of the current vertex
.SH "DECLARATION"
in\ \&int\ \&gl_VertexID\ \&;.SH "DESCRIPTION"
.PP
\fIgl_VertexID\fR
is a vertex language input variable that holds an integer index for the vertex\&. The index is impliclty generated by
\fIglDrawArrays\fR
and other commands that do not reference the content of the
\fBGL_ELEMENT_ARRAY_BUFFER\fR, or explicitly generated from the content of the
\fBGL_ELEMENT_ARRAY_BUFFER\fR
by commands such as
\fIglDrawElements\fR\&.
.SH "VERSION SUPPORT"
.TS
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\fIgl_VertexID\fR
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.TE
.sp 1
.SH "SEE ALSO"
.PP
\fBgl_InstanceID\fR()
.SH "COPYRIGHT"
.PP
Copyright
\(co
2011\-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\&.
\m[blue]\fBhttp://opencontent\&.org/openpub/\fR\m[]\&.
.SH "COPYRIGHT"
.br
Copyright \(co 2011-2014 Khronos Group
.br