work_group_broadcast

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

`gentype work_group_broadcast (`	gentype `a`,
	size_t `local_id)`

`gentype work_group_broadcast (`	gentype `a`,
	size_t `local_id_x`,
	size_t `local_id_y)`

`gentype work_group_broadcast (`	gentype `a`,
	size_t `local_id_x`,
	size_t `local_id_y`,
	size_t `local_id_z)`

Description

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

local_id must be the same value for all work-items in the work-group.

This built-in function must be encountered by all work-items in a work-group executing the kernel. We use the generic type name gentype to indicate the built-in data types half (if the cl_khr_fp16 extension is supported), int, uint, long, ulong, float or double (if double precision is supported) as the type for the arguments.

Specification

OpenCL Specification

Also see

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