Doom's Ray Tracing Upgrade: A Game-Changer For The PC Classic?

The Ultimate Doom is the ultimate game - and now it's received a ray tracing upgrade? But how do you add RT to a game that doesn't actually have anything like a modern lighting model? What does this upgrade actually do, how does it work and what level of performance can you get from the best and the worst Nvidia RTX cards? Alex investigates.

Go here for the mod: https://github.com/sultim-t/prboom-pl...

Join the DF Patreon for pristine video downloads, behind the scenes content, early access to DF Retro, early access to DF Direct Weekly and much, much more: https://bit.ly/3jEGjvx

Subscribe for more Digital Foundry: http://bit.ly/DFSubscribe

Want some DF-branded tee-shirts, mugs, hoodies or pullovers? Check out our store: https://bit.ly/2BqRTt0