GL_INSTANCEID(3G)

NAME
gl_InstanceID - contains the index of the current primitive in an instanced draw command

DECLARATION
in int gl_InstanceID ;.SH "DESCRIPTION"

gl_InstanceID is a vertex language input variable that holds the integer index of the current primitive in an instanced draw command such as glDrawArraysInstanced. If the current primitive does not originate from an instanced draw command, the value of gl_InstanceID is zero.

VERSION SUPPORT
 | OpenGL Shading Language Version
Variable Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 | 4.60
gl_InstanceID | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔

SEE ALSO

gl_VertexID()

COPYRIGHT

Copyright © 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. https://opencontent.org/openpub/.

COPYRIGHT
Copyright © 2011-2014 Khronos Group