pan/bi: vec8 support for Valhall, and reviewed commits from !15874
See !15874 (closed) for background and the last commit for the urgency. Cc @icecream95
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
See !15874 (closed) for background and the last commit for the urgency. Cc @icecream95