Introduction to Maya - Rendering in Arnold
This course will look at the fundamentals of rendering in Arnold. We'll go through the different light types available, cameras, shaders, Arnold's render settings and finally how to split an image into render passes (AOV's), before we then reassemble it i
# 1 15-08-2011 , 10:57 AM
Registered User
Join Date: Oct 2010
Posts: 147

URGENT!! face damage...

hi guys i just finish human modeling in maya2011.before rendering i check everything, the model looks fine in maya.
when i render it out(i use mental ray).the part of body ok but the part of the face distort, damage ald . how could this happen, how to fix it? here is the picture below pls have look tq u all..user added image

Attached Thumbnails
# 2 15-08-2011 , 11:13 AM
honestdom's Avatar
The Nurb Herd
Join Date: Oct 2007
Location: London
Posts: 2,381
what does your model look like without smooth preview?

# 3 15-08-2011 , 11:39 AM
Registered User
Join Date: Oct 2010
Posts: 147
i means b4 render out all looks normal but when i render out it become like this.here's pic have look. tq

Attached Thumbnails

Last edited by omegaend; 15-08-2011 at 11:41 AM.
# 4 15-08-2011 , 12:08 PM
daverave's Avatar
The thin red line
Join Date: Aug 2009
Location: England
Posts: 4,472
Are you using a displacement map or normal map...........dave




Avatar Challenge Winner 2010
# 5 15-08-2011 , 12:23 PM
Registered User
Join Date: Oct 2010
Posts: 147
i din use any of the map.. only blinn materialuser added image

# 6 15-08-2011 , 12:31 PM
daverave's Avatar
The thin red line
Join Date: Aug 2009
Location: England
Posts: 4,472
Could you show some wire shots and just check there is nothing connected to you bump also check your normals...........dave




Avatar Challenge Winner 2010
# 7 15-08-2011 , 01:28 PM
Registered User
Join Date: Oct 2010
Posts: 147
ok here is smooth n non-smooth pic have a look tq

Attached Thumbnails
Attached Images
# 8 15-08-2011 , 02:03 PM
Jay's Avatar
Lead Modeler - Framestore
Join Date: Feb 2003
Location: UK
Posts: 6,287
Do a wire frame on shaded then we can see whats happening properly on your mesh.

Jay

# 9 15-08-2011 , 02:19 PM
Registered User
Join Date: Oct 2010
Posts: 147
is this imge ok? i found out somrthing when i using maya software render the face looks just fine but in mental ray..just like the picture i show u all.....user added image

Attached Thumbnails
# 10 15-08-2011 , 05:12 PM
mastone's Avatar
Maniacal boy king of Babylon
Join Date: Aug 2005
Location: the netherlands
Posts: 1,605
are these SUBD's? Because I remember that mental ray+Subd's+non quad geometry equals major pain.( in other words it will fail).
If I look at the initial render it looks like a UV related issue in combination with a bad texture

# 11 16-08-2011 , 03:49 AM
Registered User
Join Date: Oct 2010
Posts: 147
yes it is in subd mode. but in mental ray the body part looks fine only the mouth part got problem, texture part i havent try yet.

# 12 16-08-2011 , 08:56 AM
Jay's Avatar
Lead Modeler - Framestore
Join Date: Feb 2003
Location: UK
Posts: 6,287
Its not texture related at all if theres no texture. Its not uvs either.

The base mesh is clearly quads looking at it from here.

Okay that subd on the right, that looks like you have added level edits around those areas. You can do two things:

firstly: check in the hypergraph for blind data nodes, if they are there, then select those and delete them, your mesh may drop its shader when you do it but dont worry just re-apply it.

secondly: with the base mesh (not subd) simply export it as an obj. that will get rid of any 'junk' on the mesh. Then re-import the mesh and turn it into a subd again, or just to text hit smooth preview (keyboard 3) and do a test render

cheers
J

# 13 17-08-2011 , 05:22 PM
NextDesign's Avatar
Technical Director
Join Date: Feb 2004
Posts: 2,988
Have you just tried to ditch the subd, and use a normal poly smooth? Does the artifact happen then? Do you have mental ray approximation on?


Imagination is more important than knowledge.
Posting Rules Forum Rules
You may not post new threads | You may not post replies | You may not post attachments | You may not edit your posts | BB code is On | Smilies are On | [IMG] code is On | HTML code is Off

Similar Threads