Yeager nous apporta ses lumieres ainsi en ce 2004-11-21 07:31... :

>
>light_source{
>    <27.8,54.88,27.95>
>    color LightColor
> // area_light <5, 0, 0>, <0, 0, 5>, 5, 5
>    adaptive 2
>
>    photons {
>    reflection on
>    refraction on
>    area_light
>  }
>}
>  
>
I look at your light_source. If you enable the area_light, at 5*5, 
adaptive 2 is like not using adaptive at all. adaptive 0 use a minimum 
2*2 aray, adaptive 1 a minimum 3*3 aray, adaptive 2 a minimum 5*5 aray, 
adaptive 3 a minimum 9*9 aray... up to the size of the aray effectively 
used.

Alain

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