Name

gl_GlobalInvocationID — contains the global index of work item currently being operated on by a compute shader

Declaration

in uvec3 gl_GlobalInvocationID

Description

In the compute language, gl_GlobalInvocationID is a derived input variable containing the n-dimensional index of the work invocation within the global work group that the current shader is executing on. The value of gl_GlobalInvocationID is equal to gl_WorkGroupID * gl_WorkGroupSize + gl_LocalInvocationID.

Version Support

VariableVersion 1.10Version 1.20Version 1.30Version 1.40Version 1.50Version 3.30Version 4.00Version 4.10Version 4.20Version 4.30
gl_GlobalInvocationID---------Y

See Also

gl_NumWorkGroups, gl_WorkGroupID, gl_WorkGroupSize, gl_LocalInvocationID

Copyright

Copyright © 2011-2012 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/.