Intel -9xxx processors are supported through the Intel-Compute-Runtime supplemental package to provide interface for HW tone mappng.
Intel -10xxx processors are as well
Where the lines blur is which ASIC is present.
Iris graphics is currently supported. Users report Intel-Compute-Runtime works well.
Iris/XE graphics are the ones not yet supported. (a combination of transcoder & upstream support of which I believe both are in process. It’s hoped (but don’t know) if the current transcoder beta will include support in its final release form. I’ve not been following that effort.