scott schrieb:

> Are you sure that 3x16 bit will be enough under all conditions to give a 
> perfect result?  Worst case I am thinking of is some convex curved 
> surface that has been scaled a lot in one axis (eg <1,100,1>) and then 
> has a mirror finish.  Any tiny error in the surface normals will be 
> easily visible.

I'd consider that a pathological case anyway. If you do it to compensate 
for bad scaling of the original data then you're doing something wrong 
somewhere else. Other than that, such scaling will also stretch the 
triangles pathologically, so I'd not expect any high-precision results 
from it regardless of normals precision.

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