GL_VERTEXID(3G)                 [FIXME: manual]                GL_VERTEXID(3G)

NAME
       gl_VertexID - contains the index of the current vertex

DECLARATION
       in int gl_VertexID ;.SH "DESCRIPTION"

       gl_VertexID is a vertex language input variable that holds an integer
       index for the vertex. The index is implicitly generated by glDrawArrays
       and other commands that do not reference the content of the
       GL_ELEMENT_ARRAY_BUFFER, or explicitly generated from the content of
       the GL_ELEMENT_ARRAY_BUFFER by commands such as glDrawElements. For
       glDrawElements forms that take a basevertex, gl_VertexID will have this
       value added to the index from the buffer.

VERSION SUPPORT

       +------------+-----------------------------------------------------------------------------------+
       |            |                          OpenGL Shading Language Version                          |
       +------------+------+------+------+------+------+------+------+------+------+------+------+------+
       |Function    | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 |
       |Name        |      |      |      |      |      |      |      |      |      |      |      |      |
       +------------+------+------+------+------+------+------+------+------+------+------+------+------+
       |gl_VertexID |  -   |  -   | <?>  | <?>  | <?>  | <?>  | <?>  | <?>  | <?>  | <?>  | <?>  | <?>  |
       +------------+------+------+------+------+------+------+------+------+------+------+------+------+

SEE ALSO
       gl_InstanceID()

COPYRIGHT
       Copyright (C) 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.  http://opencontent.org/openpub/.

COPYRIGHT
       Copyright (C) 2011-2014 Khronos Group

[FIXME: source]                   05/21/2022                   GL_VERTEXID(3G)