Forums
You are not logged in.
#1 2012-05-16 07:15:28
Tesselation artifacts when using displacement.
Hello! I noticed severe tesselation issues with displacement... any idea on how to get rid of these?
here is a snapshot of the problem :
http://netvg.visionglobale.com/dl.php?83-Cv7gWR
I'm using build 3.1.9
thanks!
Offline
#2 2012-05-16 08:47:11
- gducatel
- Beta tester
- From: Montreal
- Registered: 2007-11-13
- Posts: 56
Re: Tesselation artifacts when using displacement.
Did you make sure you correctly setup the displacement bound on the object (geometry approximation > Displacement > Max. Disxplacement)?
you can also attached a dicing property (from 3delight) to this object and setup an alternative camera to refine the tesselation of the object...
Can you give us access to this scene?
Offline
#3 2012-05-16 12:20:37
Re: Tesselation artifacts when using displacement.
Hello gducatel!
I tried both of your ideas but it didn't fix the problem. Here is a scene where I got rid of everything except the grid and the texture driving the displacement :
http://netvg.visionglobale.com/dl.php?88-GTpPt0
thanks!
Offline
#4 2012-05-16 13:31:22
- gducatel
- Beta tester
- From: Montreal
- Registered: 2007-11-13
- Posts: 56
Re: Tesselation artifacts when using displacement.
Hi Martin,
Like I suspected, you did not setup the displacement bound correctly and this generate "cracks" when rendering the displacement (you can google this: displacement cracks renderman).
To let you know that "possible error", 3delight provided you the following warning:
# WARNING : 3Delight: R2001: object 'FloorDisplacement' (displacement 'Mental_Ray_MR_Displacement_displacement', surface 'Mental_Ray_MR_Displacement_surface') exceeded its displacement bound by 40%
If you provide me with an FTP, I can give you an updated scene...
Cheers,
Offline
