CGTalk - Project: Stamp

Nichod

03-07-2007, 02:26 PM

Ok. I've started work on my first project, but have hit an issue. Below you can see a screengrab of a preview render in Messiah of a simple model I have created. For some reason a weird seam is appearing at intervals. I can't seem to locate the cause.

What I have tried:

-checked the model for overlap
-checked for any non-quad faces (ie. triangles)
-increased the subdivision level
-removed and adusted the simple shader structure *solved..noisette the cause*
-increase shadow quality.
-checked normals
-imported into other program, results were not the same

http://www.cginsomniac.com/projects/stamp.jpg

I appreciated any suggestions you can offer, so I can continue forward on this project.

*update* After working with the shader a little more I found the problem was noisette. For some reason at the scale it was at it was causing banding. I guess its back to multinoise. Whats the opinion? Think this is a noisette bug? Or could this be caused by something else?

khurrum_j

03-07-2007, 03:03 PM

Is that a GI render? There's a lot of graininess in the image.

What light type are you using? I doubt its the light though.

Have you done anything special to the models?

Increasing the subdivision doesn't always solve a render issue.

Maybe you can post the model if possible?

Try making a new scene and import the models there?

Seems to be a 'seam' problem. Are you mapping the models in some way? If yes,
then what projection type are you using?

Will help if you can upload the models somwhere.

KHURRUM

Nichod

03-07-2007, 03:08 PM

Thanks for the offer to help KHURRUM but I managed to figure it out. Was linked to noisette. Its not a GI. The grain is from the noisette shader. Seems at the right scale and bump setting banding will occur. I'm headed towards a fine grain plastic and in the process got the banding. A scale around .01 does noisette in. Perhaps Taron can take a look at it.

khurrum_j

03-07-2007, 04:21 PM

Damn these Messiah-small-and-sensitive-increment-slider-numbers. Can never
be too careful.

Glad you got it figured out. Good one!

KHURRUM

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