LocalInvocationId
LocalInvocationId
Decorating a variable with the LocalInvocationId built-in decoration
will make that variable contain the location of the current
cluster culling,
task, mesh, or
compute shader invocation within the local workgroup.
Each component ranges from zero through to the size of the workgroup in that
dimension minus one.
If the size of the workgroup in a particular dimension is one, then the
LocalInvocationId in that dimension will be zero.
If the workgroup is effectively two-dimensional, then
LocalInvocationId.z will be zero.
If the workgroup is effectively one-dimensional, then both
LocalInvocationId.y and LocalInvocationId.z will be zero.
Valid Usage
VUID-LocalInvocationId-LocalInvocationId-04281
The LocalInvocationId decoration must be used only within the
GLCompute, MeshEXT, TaskEXT, MeshNV, or TaskNV
Execution Model
VUID-LocalInvocationId-LocalInvocationId-04282
The variable decorated with LocalInvocationId must be declared
using the Input Storage Class
VUID-LocalInvocationId-LocalInvocationId-04283
The variable decorated with LocalInvocationId must be declared as
a three-component vector of 32-bit integer values