I don't see any additional context but this does appear to be a new thing. Two commits credited to Carmack in the OpenBSD source and they are dated 5/16/2020 and 5/17/2020.
https://cvsweb.openbsd.org/src/sys/dev/ic/vga.c?rev=1.70&con... https://cvsweb.openbsd.org/src/sys/dev/ic/vga.c?rev=1.71&con...