Originally posted by jAkUp
and where exactly does it say hes begun programing them???
nobody will notice 24fp vs 32fp... nobody will notice 16fp vs 24fp either.
You think he's testing their relative performances out of thin air? How exactly does one compare the relative performance of differing code paths without actually writing those paths?
As for IQ, Carmack wrote: "I would have been happy to have just 16 bit, but some texture calculations have already been done in 24 bit, so it would have been sort of a step back in some cases." 16fp vs. 24fp will probably be more noticeable than 24fp vs. 32fp.