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Rendering bugs on 9t3 ? See samples...

Posted: Sat Aug 18, 2007 9:40 pm
by Strykaas
Hello,
These are my last 9t3 renders (happended a month ago) who quite disappointed me. I think they're wrong. Are these known problems ?

Posted: Sat Aug 18, 2007 9:45 pm
by Strykaas
Second one. I'm off from Indigo since these renders...

Posted: Sat Aug 18, 2007 9:49 pm
by suvakas
What's wrong exactly? Those edges on round parts?

Posted: Sat Aug 18, 2007 9:55 pm
by Kram1032
NORMALSMOOTHING
- nothing more to say.

If you activated normalsmoothing, you'll need to add an Edgesplit modifier, to avoid smoothing problems ;)

Btw, newest Version isn't 0.9t3 but 0.9t6 ;)

Posted: Sat Aug 18, 2007 9:56 pm
by Strykaas
On the 1st one :
Nope. Normals are per face, these faceted rounded parts are OK. What's wrong is the straight reflection on the inner part of the thing. You can see straight lines... which is not featured by the model...

On the 2nd one, they're obvious...

Posted: Sat Aug 18, 2007 10:07 pm
by suvakas
What straight reflection ? Edges?
I'd say turn on normal smoothing like Kram wrote.

Posted: Sat Aug 18, 2007 10:10 pm
by Strykaas
No, I don't want normal smoothing.

Posted: Sat Aug 18, 2007 10:12 pm
by suvakas
Strykaas wrote:No, I don't want normal smoothing.
Can you be more specific then what reflections? Mark them down in Paint or something 8)

Posted: Sat Aug 18, 2007 11:03 pm
by Strykaas
...seemed obvious to me !

Posted: Sat Aug 18, 2007 11:05 pm
by Strykaas
...

Posted: Sat Aug 18, 2007 11:07 pm
by Kram1032
Sorry, that ALSO is a non-normal-smoothing thing.

Look into a faceted mirror, and it'll look the same.

You can use the Edgesplit modifier, to split SOME edges, and others NOT.
No other way to fix that.

Posted: Sat Aug 18, 2007 11:41 pm
by suvakas
I think IOR is the cause of this.
Seems normal to me.
Lower the IOR and you should get less of those.

Posted: Sun Aug 19, 2007 1:50 am
by zsouthboy
Normal smoothing.

Period.

You're an idiot for insisting otherwise.

Posted: Sun Aug 19, 2007 2:26 am
by Kosmokrator
+1 zsouthboy.....

:roll:

Posted: Sun Aug 19, 2007 2:28 am
by OnoSendai
I think the straight edged reflections are caused by dodgy normals on the faces. I think your modelling program is spitting out crappy geometry :)