https://wccftech.com/nvidia-release-open-source-quake-ii-rtx/

Last month, during GDC 2019, NVIDIA showed an impressive Quake II RTX demo, which showed how ray tracing can improve even old games, and it seems like players will soon be able to experience it for themselves.

Speaking with Aus Gamers, Alexey Panteleev, the lead programmer of the Quake II RTX demo, confirmed that an open source version of it will be released in the future.