motorsep nous apporta ses lumieres en ce 06/10/2006 19:32:
> I have been experimenting with 2-pass radiosity and I can't get my image
> clean. I get alot of artifacts. Why?
> 
> Here is final image:
> http://img100.imageshack.us/img100/4084/2pass01ru2.jpg
> 
> Here is 1st pass radiosity parameters (rendering resolution 64x48, no AA):
>       pretrace_start 0.08
>       pretrace_end   0.01
>       count 400
>       nearest_count 20
>       error_bound 0.3
>       recursion_limit 3
>       low_error_factor 0.2
>       gray_threshold 0
>       minimum_reuse 0.015
>       brightness 1.0
>       adc_bailout 0.01/2
> 
> Here is 2st pass radiosity parameters (rendering resolution 640x480, with
> AA):
>       pretrace_start 1 // default 0.08
>       pretrace_end   1 // default 0.01
>       error_bound 0.8
>       recursion_limit 3 // default 2
>       always_sample off
> 
> And yes, I save/load radiosity file :)
> 
> 
> 
I'm not sure about it, but maybe, just maybe, using a larger resolution for the 
first pass could help. It may gather more radiosity samples.
A low error_bound need higher count, you may need around 1000 or more, possibly 
all the way up to 1600. I regularly use count in the 300~500 range with default 
error_bound.

-- 
Alain
-------------------------------------------------
Beam me up Scotty. This isn't the men's room.

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