SubgroupLtMask - Mask of shader invocations in a subgroup with a lower subgroup local invocation ID

SubgroupLtMask

Decorating a variable with theSubgroupLtMask builtin decoration willmake that variable contain thesubgroup mask of the current subgroupinvocation.The bits corresponding to the invocations less thanSubgroupLocalInvocationId are set in the variable decorated withSubgroupLtMask.All other bits are set to zero.

SubgroupLtMaskKHR is an alias ofSubgroupLtMask.

No cross-references are available

For more information, see theVulkan 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.