Xavier Manget wrote:
> Hi all!
> 
> I'm learning how to use radiosity, so I've made a small image based on the
> classic Cornell Box (see below)
> 
> I've used rather high quality settings (I think), roughly based on
> Radiosity_OutdoorHQ in rad_def.inc . The render took more than 24h on my
> poor 750 MHz PC and though, I think there are still some radiosity artifacts
> on the image (especially between the toruses; also some kind of grainy
> effect).

That render time seems reasonable with such a scene and these settings. 
    You might try decreasing pretrace_end and low_error_count.  Also 
might try the 'randomize' option from MegaPOV.

Christoph

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