Re: Ray tracing on your PC!
PovRay still is the reference for Ray Tracing.
Not much has changed in 20 years in ray tracing. Algorithms are still the same and as such, the renders also are the same. It still have some advantages on the triangle renders used for current 3D and a lot of down sides.
It's all done on CPU for example...
As the universe is curved, there cannot be a straight answer...