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Old May 12th, 2006   #5 (permalink)
pixelperfectg
Senior Member
 
Join Date: Dec 2003
Location: SC, USA
Age: 38
Posts: 206

Name: Jeff Patton


United_States 


Default Re: New Mental Ray grass displacement tutorial

Quote:
Originally Posted by nisus
Have you experimented with depth falloff to save rendering time on not having to displace at larger distances?
Yes, at times I use various materials to control where displacement occurs on large objects. No sense in having a displacement calculation when it can't be seen (behind objects), or won't be noticable simply due to the camera distance.
Quote:
Originally Posted by nisus
Why do you set FG max and min radius to the same value? I've read that these should be 10x apart, basicly 1/10th and 1/100th of the scene diameters.
As I briefly mention in the tutorial, the settings I used are just for simple/fast preview renders. naturally, the FG won't be super accurate, but for testing, it works well. And since I really only needed a touch of skylight for this scene I just left the FG at my test values.
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