Name

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

Declaration

in highp int gl_InstanceID ;

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 ES Shading Language Version
Variable Name 1.00 3.00
gl_InstanceID-✔

See Also

gl_VertexID

Copyright

Copyright © 2011-2013 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.