In those days, the centre of the demoscene was Finland, with its Assembly demoparty and associated acts of unparalleled programming power (e.g. Future Crew). Those Future Crew and CNCD guys later were associated with a lot of rendering tech, both on CPU (Umbra visibility middleware, which ships with many/most modern games) and GPU (anyone remember the infamous BitBoys GPU hype?); their demoscene efforts morphed into the benchmarking software company Future Mark (with demoscene parody as "Maturefurk") as well as gamedev (Remedy entertainment).
These days, Nvidia created a R&D lab in Finland just for them, and is a great research effort led by Jaakko Lehtinen[1] (responsible much for the recent GAN stuff that went viral), Timo Aila, Samuli Laine and Tero Karras (responsible for the tech behind Nvidia's RTX [2], [3]).
[1] https://research.nvidia.com/person/jaakko-lehtinen
[2] https://research.nvidia.com/publication/understanding-effici...
[3] https://research.nvidia.com/sites/default/files/publications...