GL_INVOCATIONID

Section: [FIXME: manual] (3G)
Updated: 07/25/2019
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NAME

gl_InvocationID - contains the invocation index of the current shader  

DECLARATION

in int gl_InvocationID ;.SH "DESCRIPTION"

In the tessellation control language, gl_InvocationID contains the index of the output patch vertex assigned to the shader invocation. It is assigned an integer value in the range [0, N-1] where N is the number of output patch vertices.

In the geometry language, gl_InvocationID identifies the invocation number assigned to the geometry shader invocation. It is assigned an integer value in the range [0, N-1] where N is the number of geometry shader invocations per primitive.  

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
gl_InvocationID - - - -

[1] Versions 1.50 to 3.30 - geometry shaders only.  

SEE ALSO

gl_InstanceID()  

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. m[blue]http://opencontent.org/openpub/m[].  

COPYRIGHT


Copyright © 2011-2014 Khronos Group


 

Index

NAME
DECLARATION
VERSION SUPPORT
SEE ALSO
COPYRIGHT
COPYRIGHT
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