PDA

View Full Version : Odd shadows on Normal Mapped Render


arvinmoses
03-11-2011, 03:30 AM
I'm having some strange shadows when rendering with a normal map. Some one please help... Happens with mr, and 3delight. I think its something simple, I just have never used normal maps in for non-realtime rendering.

3Delight
http://arvinmoses.com/Upload/image-dump/willy-test.jpg
Mental Ray
http://arvinmoses.com/Upload/image-dump/willy-test1.jpg

finalgathering
03-14-2011, 10:57 PM
I think that your tangent map is not detailed enough, the slices are too large.
You may have to make a more detailed map.

I made a tutorial on the ultimapper procedure here:

http://www.vimeo.com/19399592

In your case, in the explorer, go deep inside the object's cluster and find the "texcoords" and decrease the angle grouping.
Also, "smooth" the tangents as shown in the tutorial.

arvinmoses
03-15-2011, 04:44 AM
Awesome... will check it out. Thank you so much!

CGTalk Moderation
03-15-2011, 04:44 AM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.