Thanks for the advice Kari, I'll try that out !

George Pantazopoulos


"Kari Kivisalo" <pro### [at] luxlabcom> wrote in message
news:3CC591B8.E05F9DC7@luxlab.com...
>
> First render with low error_bound, without aa:
>
>   nearest_count 1
>   error_bound 0.1
>   save_file "rad"
>
> Then with higher error_bound:
>
>   pretrace_start 1
>   pretrace_end 1
>   nearest_count 1
>   error_bound 0.4
>   load_file "rad" always_sample off
>
> This averages more samples from the first render. Setting
> nearest_count higher didn't improve quality on the scenes
> I have tested this. Just made it slower. The first render
> doesn't need to be full resolution because the image isn't
> used anyway. When reducing resolution maybe also reduce
> minimum_reuse the same amount.
>
> If the scene contains transparent objects this two phase
> method also cuts down render time. Just set max_trace_level
> to the minimum so that rays still pass through transparent
> objects and use diffuse 0, ambient 0, no normal and no
> reflection on those objects for the first render.
>
>
> _____________
> Kari Kivisalo

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