SubgroupId(3)

Name

SubgroupId - Subgroup ID

Description

SubgroupId: Decorating a variable with the SubgroupId built-in decoration will make that variable contain the index of the subgroup within the local workgroup. This variable is in range [0, NumSubgroups-1].

Valid Usage

VUID-SubgroupId-SubgroupId-04367
The SubgroupId decoration must be used only within the GLCompute, MeshEXT, TaskEXT, MeshNV, or TaskNV Execution Model
VUID-SubgroupId-SubgroupId-04368
The variable decorated with SubgroupId must be declared using the Input Storage Class
VUID-SubgroupId-SubgroupId-04369
The variable decorated with SubgroupId must be declared as a scalar 32-bit integer value

See Also

No cross-references are available

Document Notes

For more information, see the Vulkan Specification (NOTE: cannot determine Specification page containing this refpage).

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.