> On 28-9-2011 10:24, Jaime Vives Piqueres wrote:
>> On 27/09/11 16:19, Thomas de Groot wrote:
>>> During first pass, I switch off area light and any transparent
>>> textures. Can I switch off the media too? I don't remember about
>>> that.
>>
>> I would, for sure. I also make simplified versions of complex textures
>> wich render slow (heavily layered ones, for example).
>
> With what Alain says about scattering media, we could also use a very
> low sample value during first pass and a high one during second pass,
> couldn't we?
>
> Thomas

A low sample value for the media will miss most fine details, but, it's 
OK as the shadow will be difuse and effectively hide the fine details.

samples 3 to 5 should be correct for the first pass. It defaults to 10, 
and you may need more than 100 for the final render.

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