https://wccftech.com/doom-eternall-ray-tracing/

DOOM Eternal doesn't support ray tracing, but there's still a way to enable them thanks to Pascal “Marty McFly” Gilcher’s RayTraced Global Illumination shader for ReShade.

The shader brings significant improvements in the game, as seen in a brand new 4K video that has been shared by Digital Dreams, which you can find right below.