vray dirt or AO

[vakis]

hi,

 

i am currently learning about vray dirt and AO, my question is what if i apply a dirt material in my walls rather than using AO as a pass, or combining those 2 technics in the same render. wich is the best way? here are some images that i ve done for comparison

[ATTACH=CONFIG]43647[/ATTACH][ATTACH=CONFIG]43648[/ATTACH][ATTACH=CONFIG]43649[/ATTACH]

thanks

[Matt McDonald]

There is a post from Master Zap about ambient occlusion, it's obviously geared toward Mental Ray but the concepts apply to V-Ray as well.

 

http://mentalraytips.blogspot.com/2008/11/joy-of-little-ambience.html

 

The long and the short of it is: Zap says don't do AO as a pass.