Op 18-7-2024 om 19:49 schreef Bill Pragnell:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> Even better, 'stochastic' is also supported by version 3.8! I generally use:
>>
>> +am3 +a0.01 +ac0.90 +r3
>>
>> and in the radiosity block a count between 10 and 50
>> 
>> varying +a, +ac and +r values increases/decreases the stochastic quality
>> (and render time!).
> 
> Are we talking about the same thing here?
> 
> I was referring to the unbiased purely stochastic version of radiosity, which
> was a significant change to the algorithm; I was under the impression that this
> wouldn't end up in main POV-Ray in the form it was implemented in UberPOV. Maybe
> I missed something, is this in v3.8 now, or are you referring to improvements to
> sampling alone?
> 

Ah. This I do not know for sure. I am using the 'latest' v3.8-beta2, and 
as far as I can remember, the use of the stochastic implementation there 
is identical(?) to what was implemented in UperPOV. I am afraid this is 
all I can remember from those days, back in 2014, if I am correct. Using 
+am3 automatically switches on the stochastic render and I suppose 
(wrongly maybe) that this directly influences the radiosity, but if this 
then is a [quote] unbiased purely stochastic version of radiosity 
[/quote] I do not know indeed. This would need the comment of an expert 
(Christoph Lipka! where are you?). All I know is that it works fine 
as-is, and I have been using it ever since with v3.8-beta or v3.8-beta2.

Sorry for not being able to be more specific. :-[

-- 
Thomas

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