Tim Attwood nous apporta ses lumieres en ce 2007/08/18 20:18:
>>>  (One cool developement idea for povray would be, I think, that if a
>>> surface has transparency, no reflection and no ior, iow. rays just pass
>>> through unmodified (just taking the color of the surface), povray could
>>> skip incrementing the recursion counter. That way you could have and
>>> indefinite amount of transparent surfaces even if max_trace_level is
>>> small.)
> 
> My thought would be that after a ray hits the max trace depth it should
> ignore transmit, filter and reflection for that hit, and return a pigment
> color instead of just returning black. In many cases where there is
> multiple semi-transparent, or partially colored reflections, this "guess"
> would result in a pixel that (after being shaded by the first hits) would
> be somewhat correct. In other cases you'd get multi-color speckling,
> but that is just similar to the black speckling we have now. 
> 
> 
That's whey you have adc_bailout. It can be used to limit the depth when the 
last surface contribution fals under the threshold.

-- 
Alain
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99 percent of lawyers give the rest a bad name.

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