Bizzare faceted reflections in chrome

Brute Guy · June 25th, 2008

Hi,

I'm using Vray with Max2008 and am having some problems with some chrome in my scene. I have assigned a flat surface with a simple chrome material, and when the scene renders out, the reflection you can see in the chrome (the noise bumped material) appears extremely facceted. See the picture.

Does anybody have any suggestions as to why this might be happening?

Thanks

Marc

Tommy L · June 25th, 2008

It may be the smoothing groups? Try clearing the smoothing groups at the sub-object level.

STRAT · June 25th, 2008

are you using vray with light cache for a lighting bounce?

Brute Guy · June 25th, 2008

Yes, using Vray with geometry imported from Rhino, I don't know much about smoothing groups as it is a feature I seldom use, here is a screen grab of my GI settings,

Thanks for your replys

Marc

stef.thomas · June 25th, 2008

The facets are in fact the areas sampled by your irradiance map. The reflection areas seem to be getting sampled less or not smoothed out or something, not sure why. Try upping your irradiance map settings and see if this affects it.

STRAT · June 25th, 2008

i once had this in vray for c4d when using lc and viewing it in reflections. it was a bug.

June 25th, 2008	#2 (permalink)
Tommy L Veteran Member Join Date: Dec 2003 Location: chicago Age: 30 Posts: 1,995 Name: Tom Livings	Re: Bizzare faceted reflections in chrome It may be the smoothing groups? Try clearing the smoothing groups at the sub-object level. __________________ http://thomaslivings.blogspot.com/

June 25th, 2008	#3 (permalink)
STRAT Super Moderator Join Date: Dec 2001 Location: Cardiff, Wales, UK. Age: 36 Posts: 6,505 Name: Stephen Leworthy	Re: Bizzare faceted reflections in chrome are you using vray with light cache for a lighting bounce? __________________

June 25th, 2008	#5 (permalink)
stef.thomas Senior Member Join Date: Dec 2006 Location: Glasgow Age: 32 Posts: 348 Name: Stephen Thomas	Re: Bizzare faceted reflections in chrome The facets are in fact the areas sampled by your irradiance map. The reflection areas seem to be getting sampled less or not smoothed out or something, not sure why. Try upping your irradiance map settings and see if this affects it. __________________ Stephen Thomas - Glo www.glo3d.com www.flickr.com/stef3d

June 25th, 2008	#6 (permalink)
STRAT Super Moderator Join Date: Dec 2001 Location: Cardiff, Wales, UK. Age: 36 Posts: 6,505 Name: Stephen Leworthy	Re: Bizzare faceted reflections in chrome i once had this in vray for c4d when using lc and viewing it in reflections. it was a bug. __________________

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