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 Subject: importer OBJ from CAD - GI dark stains on thin walled areas

El_Rudo opened this issue on Sep 27, 2013 · 3 posts

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  El_Rudo    ( ) ( posted at 5:42AM Fri, 27 September 2013 

Hi, new to the forum here, hope to find an answer to my question here!

I'm rendering a 12m yacht, with wall thicknesses from 18 to 33mm, and I'm noticing that when rendering with GI, dark stains appear on the outer surface. It looks like GI "shines" the darkness from inside the material through the outer skin.

The image shows a portion of the bow, it gets dark where there are 4 layers of skin in close proximity where the bow get really narrow (port outer, port inside, starboard inside, starboard outside).

further aft you can see some marking from an interior panel.

I'm guessing I have to alter Global Illumination settings but I'm pretty clueless as to where to begin...


  El_Rudo    ( ) ( posted at 3:43AM Sat, 28 September 2013  · @4107530

Got it fixed. Export from CAD as .wrl (VRML2.0) in stead of .obj did the trick.

  cartesius    ( ) ( posted at 8:50AM Mon, 14 October 2013  · @4110025

Glad you got it sorted!


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