[Radiance-general] texfunc with -aa 0

[Greg Ward]

Hi Stephen,

I only now realize that I misread your initial post, thinking you were talking about the -ab setting rather than -aa.  Mea culpa.

Are you sure the texture isn't just being masked by all the noise you get with -aa 0?  Is it indeed a texture rather than a pattern you have applied?  In either case, it should have some effect whatever your -aa setting.  If you increase the -ad setting and decrease the -lw setting to 1/(ad) accordingly, the noise should go down to where you may be able to discern the texture again.  Can you share what texture you are using, exactly?

Cheers,
-Greg

> From: Stephen Wasilewski <stephen at coolshadow.com>
> Date: November 1, 2016 9:53:12 AM PDT
> 
> Hi Greg and Jon,
> This is an indirectly lit surface (a ceiling).  I am not seeing the same patterning I get with -aa >0.  In a small test scene, I see the normal pertubation if I apply a specularity to the material, but not if it is purely diffuse, images below are with a diffuse material.  In longer runs that clean up the noise I see the same lack of pattern:
> 
> vwrays -ff -vf 1.vf -x 400 -y 400 | rtrace  `vwrays -d -vf 1.vf -x 400 -y 400` -ffc -n 8  -ab 3 -lr -4 -lw 1e-4 -ad 200 -as 0 -aa 0 -av .04 .04 .04  test.oct > nocache.hdr:
> 
> vwrays -ff -vf 1.vf -x 400 -y 400 | rtrace  `vwrays -d -vf 1.vf -x 400 -y 400` -ffc -n 8  -ab 3 -ar 300 -ad 500 -as 250 -aa .1 -av .04 .04 .04 -af cache.amb  test.oct > ambcache.hdr:
> 
> 
> 
> Thanks,
> 
> 
> Stephen Wasilewski
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