raven wrote:
> We test this function with one big triangle.

It's unlikely a scene will ever consist of a single triangle.  Even if 
it did, POV-Ray can currently render it instantly, and 20% faster of 
instant is still instant.

A better test would consist of 10s of thousands of triangles.  My guess 
is that there wouldn't be much (if any) improvement because the vista 
buffer and bounding heirarchy will eliminate most of the intersection tests.

My opinion is that hand-optimized assembly for intersection tests is 
"cool" and "interesting", but also not the best place for the effort...

-Ryan

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