I'm really glad to see how fantastic the lighting and shadowing are in Doom: Rage's complete lack of lighting, even muzzle flashes, made the world feel entirely dead/fake to me, it made it impossible for me to feel immersed. idtech 6 looks like it sacrifices nothing that I can tell to accomplish what it does. I can't find any good technical breakdown of it (Wikipedia still has 2008 claims about raytracing and voxels, lol), but Digital Foundry did a good overview of its features:
External Content
www.youtube.com
Content embedded from external sources will not be displayed without your consent.
Through the activation of external content, you agree that personal data may be transferred to third party platforms. We have provided more information on this in our privacy policy.