Nvidia focused heavily on its new ray tracing technology during its RTX showcase. When the technology is ubiquitous enough ray tracing will allow some incredibly impressive lighting that until now was limited to show floor demos and a render farm but recently someone modified Quake 2 to support ray tracing and the results are impressive and you can try right now(assuming you have an RTX video card). Since iD Software released the source for Quake, Quake 2, Quake 3, Doom, Doom 2, Doom 3, etc anyone can take that source and modify it and someone did to retrofit it to support Nvidia's new RTX tech. As always, Digital Foundry has an analysis video and if you are interested in the future of 3D graphics technology, you should check it out.
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