Bruno Cabasson nous apporta ses lumieres en ce 2007/09/21 09:18:
> I take the risk of appearing stupid, but is it possible to make the
> assumption that if a ray hits an object, the rays next to it (next pixel
> for example, or the next ray shot, or so ...) have a high probability to
> hit the same object, thus avoiding useless tree-traversal and intersection
> test? Would it be costful: if the test fails, then we go on with the normal
> traversal with little overhead, and if success, we save a non neglectable
> time?
> 
> Is it possible to collect ray-object intersection statistics while shooting
> rays and intersecting, in order to make prediction?
> 
>     Bruno
> 
> 
It may be worth investigating. The potential benefit would be largely scene 
dependent. May help in scenes containing hundreds to thousands of objects.

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you can describe in perfect, 
legal, pov syntax, how to re-create everything in your computer room using 
primitives and csg operations.
fish-head

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