(2022-07-04, 15:41)Orion Pobursky Wrote: Primitive substitution in it's original sense was replacing the segmented 16 or 48 primitives with true curves in POV-Ray. This has been extend to mean that all surfaces that are smoothly curve in real life are shown that way in the program.
With primitive sub:
Without:
There's really nothing actually happening with geometry on this pic. It is a matter of a smooth shading