I find it critical to ensure all loops are unrolled in basic vector ops (copy/arithmathc/dot etc.) On Wednesday, 16 October 2013 at 12:02:15 UTC, Róbert László Páli wrote: > Hello! > > I am writing an unbiased raytrace renderer in D. I have good > progress, but I want to make it as fast as possible where I can > do it without compromises.