"Those are all Quake 2 textures with a bit of messing about to fit the theme - since doing this I've figured out how Quake 2 RTX materials work and modded it to load higher resolution models in maps so could improve on this a lot. There are a few free photorealistic texture packs out there that include stuff like that but would need some adjustment (roughness/specular, normal and metal/chrome maps) to make them materials in Quake 2 RTX." -Rroff
"Screenshots of various Quake II mods, with RTX on, by SGC-Puffy, of Perth, Australia. 'Somewhere beyond the sea... Somewhere waiting for me... My Big Daddy stands on golden sands...'"
"All images are courtesy of Quadz and the TastySpleen Quake 2 community. I have a great appreciation for everybody at TastySpleen. Thank you guys for being the trusted hands keeping the flaming torch of Quake 2 ablaze."