SPIR-V Built-In
SubgroupGeMask
Mask of shader invocations in a subgroup with the same or higher subgroup local invocation ID
SubgroupGeMask
Decorating a variable with the SubgroupGeMask builtin decoration will
make that variable contain the subgroup mask of the current subgroup
invocation.
The bits corresponding to the invocations greater than or equal to
SubgroupLocalInvocationId through SubgroupSize-1 are set in the
variable decorated with SubgroupGeMask.
All other bits are set to zero.
SubgroupGeMaskKHR is an alias of SubgroupGeMask.
Valid Usage
VUID-SubgroupGeMask-SubgroupGeMask-04372
The variable decorated with SubgroupGeMask must be declared using
the Input Storage Class
VUID-SubgroupGeMask-SubgroupGeMask-04373
The variable decorated with SubgroupGeMask must be declared as a
four-component vector of 32-bit integer values