Cousin Ricky nous illumina en ce 2008-05-21 23:19 -->
> Alain <ele### [at] netscapenet> wrote:
>> You realy need to add "adaptive" to your area_light. It will greatly improve
>> your rendering time.
>> Start with adaptive 0, and increase it if you get artefacts.
>> With adaptive 0, it's beter to use some specific array samples: 5x5, 9x9, 17x17,
>> 33x33, 65x65,... this due to the way the adaptive sampling is conducted. If you
>> use a treshold larger than adaptive 0, start with the next value in the list.
> 
> Let's see... (Double-checking "lamp.inc"...)
> 
> I'm using 5x5 with circular orient adaptive 1.
> 
> 
>> Very nice twist on an old cliché.
> 
> Thank you.
> 
5x5 with adaptive 1 give you almost no gain over non-adaptive. It start at 3x3 
and occasionaly samples in between. You can go much higher.
In your case, adaptive 0 will very probably give good results. The area_light is 
relatively small compared to the light-object distance. The object receiving the 
shadow is close to the one casting it. The parts of the shadow that could cause 
problems are not visible.

Using 9x9 and adaptive 0 will be faster.

-- 
Alain
-------------------------------------------------
A wise and frugal government, which shall leave men free to regulate their
own pursuits of industry and improvement, and shall not take from the mouth
of labor and bread it has earned - this is the sum of good government.
Thomas Jefferson

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