It probably needs surface normals.
Try running the model through osg convert and have it add normals.
osgconv --smooth <input file> <output file.ive>
Brian
> Date: Sun, 15 Feb 2009 15:12:59 +0200
> From: [email protected]
> To: [email protected]
> Subject: [osg-users] floor looks dark
>
> Greetings,
>
> I am trying to make a visualization of a building in 3DS, and it looks
> like the floor always looks dark, even if material/texture is light. I
> tried even to make the "floor" plain white, and it appeared quite dark
> gray. If I rotate, it always appears that darkened are surfaces that
> happen to be "down" related to the camera.
>
> Does anybody knows what to do about this "darkening" effect? Is it
> something that I can control?
>
> Thanks,
> D
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