2011-2014
Khronos Group
gl_WorkGroupSize
3G

# gl_WorkGroupSize

contains the size of the workgroup operated on by a compute shader

## Declaration

const
uvec3 `gl_WorkGroupSize`

## Description

In the compute language, `gl_WorkGroupSize` contains the size of a workgroup declared by a compute shader. The size of the work group in the X, Y, and Z dimensions is stored in the x, y, and z components of `gl_WorkGroupSize`. The values stored in `gl_WorkGroupSize` match those specified in the required `local_size_x`, `local_size_y`, and `local_size_z` layout qualifiers for the current shader. This value is constant so that it can be used to size arrays of memory that can be shared within the local work group.

## Version Support

`gl_WorkGroupSize`

## See Also

gl_NumWorkGroups, gl_WorkGroupID, gl_LocalInvocationID

## 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. http://opencontent.org/openpub/.