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Contains the size of the workgroup operated on by a compute shader.



In the compute language,gl_WorkGroupSizecontains 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 ofgl_WorkGroupSize. The values stored ingl_WorkGroupSizematch 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[edit]

gl_WorkGroupSize 4.3+

See Also[edit]

 gl_NumWorkGroups , gl_WorkGroupID , gl_LocalInvocationID 


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.