alt Hacker NewsUnfortunately nowadays id Software doesn't seem to be at the cutting edge of engine technology anymore. Most interesting new developments now come from Unreal Engine as far as I can tell. Like virtual geometry (Nanite) or efficient ray traced direct illumination (MegaLights).
Doom the Dark Ages uses some pretty advanced (and performance intense) illumination techniques which i believe are comparable ro megalights.
They ripped our Carmacks texture streaming stuff outta the engine years,ago though