I started work on a DirectX Raytracing port of Quake 1. The entire game is raytraced, and requires a Nvidia 20xx or a Nvidia 30xx. This video was shot on a Nvidia 3080. The engine supports real time raytraced lighting and shadows(no bump mapping, I wanted to keep the composition of the original game, but with raytracing), raytraced Ambient Occlusion, and real time raytraced reflections.

Download:

https://github.com/jmarshall23/QuakeRTX/releases/tag/Alpha0.02

EDIT:

As of Alpha 2, which is the link above, the entire game is playable.

I fixed the inverted UV issue you see in the above video, added sky and few other things, but I created a video showing the performance on a 3080, 2080 and 2060.