problem artifacts

Sat Jun 20, 2015 4:55 pm

Hello, does anyone know tell me what is the problem? geometry looks clean.

Sat Jun 20, 2015 5:27 pm

Weird issue. Have you tried to tweet the ray epsilon parameter in the kernel node? Perhaps it is a scale problem.

-Juanjo

Tue Jun 23, 2015 11:48 am

hau reason, is a problem of scale. The model has been scaled because the original is too big for my scene! how can I fix it? It 'a problem of model?

Tue Jun 23, 2015 11:53 am

Can't the ray epsilon parameter in the kernel node fix the problem? ... try to render the image with 0.001 or 0.01 as ray epsilon, to see what happens.

-Juanjo

Tue Jun 23, 2015 12:10 pm

I do not think, as you can see in the modeler, the vessel is 8.6 meters high. while in the layout it is scaled in order to have a correct size.

Tue Jun 23, 2015 2:20 pm

Weird, the object scale should not be a problem. Can you please try with a ray epsilon of 0.000001 (you are going to see 0.0, but it works).

Anyway, if you want to send me the scene I could test it here: [email protected]

-Juanjo

Tue Jun 23, 2015 3:32 pm

the problem still exists. I send you the scene. thanks for your time.

Tue Jun 23, 2015 4:32 pm

The problem in this scene is that the objects have a vertex normal map that is broken, perhaps because you have modified the geometry in the modeler (rotation operations and so on). If you disable the vertex normal maps in the materials and adjust the smoothing angle, all should work fine.

Remember to reload the scene in the IPR after change this parameters to see the changes.

-Juanjo

Tue Jun 23, 2015 5:59 pm

Thanks again Juanjo!!!!

Tue Jun 30, 2015 9:20 am

juanjgon wrote:The problem in this scene is that the objects have a vertex normal map that is broken, perhaps because you have modified the geometry in the modeler (rotation operations and so on). If you disable the vertex normal maps in the materials and adjust the smoothing angle, all should work fine.

Remember to reload the scene in the IPR after change this parameters to see the changes.

-Juanjo

hi

everytime if you see artefacts like that is the reason that the new octane/lw users drop the normal map in the classic surface editor or use a wrong normal map in the node editor...put this tipp in the manual if you want...its better (as you must have a look in every scene if a new user do that) ....than you can say...RTFM

snip lwguru