iris: fix mapping compressed textures
This code was originally made for crocus by Dave Airlied. Iris is also affected, so this commit ports fix.
Original code: c12444ab
fixes #5184 (closed)
Supersedes !12439 (closed) (I'm not able to reopen.)
This code was originally made for crocus by Dave Airlied. Iris is also affected, so this commit ports fix.
Original code: c12444ab
fixes #5184 (closed)
Supersedes !12439 (closed) (I'm not able to reopen.)