Broadcast a value to all work-items in the sub-group.

gentype sub_group_broadcast ( gentype x,
  uint  sub_group_local_id )


Broadcast the value of x for work-item identified by sub_group_local_id to all work-items in the sub-group.

sub_group_local_id must be the same value for all workitems in the sub-group.

We use the generic type name gentype to indicate the built-in data types half, int, uint, long, ulong, float or double as the type for the arguments. Type half requires the cl_khr_fp16 extension. Type double is optional.


OpenCL Specification

Also see


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