Interesting article on Quake engine visibility calculations Created 5 years ago2019-01-01 14:20:09 UTC by Solokiller

I found this article while cleaning up my bookmarks: https://www.bluesnews.com/abrash/chap64.shtml

It goes into detail on how Quake's visibility calculation was developed and how it works. It's an interesting read.

There are more articles on this website, you can find them here: https://www.bluesnews.com/abrash/contents.shtml

Thanks for sharing! Good read

By the time I'd got most of the way through the article I'd completely forgotten about vis.
Anyway, I remember reading https://github.com/x6herbius/afterburner-engine/wiki/Nightfire-BSP-Format which seems to be a moderately accessible document which describes the vis lump among other things (it's for 007 Nightfire but it's close enough probably).