raytracing large meshes

Oh dear, im spamming the forum with problems … :frowning:

I came across the following issue with raytracing large meshes, does anyone know what this is caused from? With scanline or raytraced shadows/AO turned off it looks perfect, but the raytracer does some weird things. The problem is reproducable on almost any larger mesh i imported.
Many thanks for any hint.

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You say that this problem occurs on objects that you import. What format objects are you importing? Have you tried removing doubles after importing the objects, or have you checked for any other problems in the mesh that could cause those artifacts?

DwarvenFury

i import as obj using the standard script that comes with blender. I flipped normals and i could remove some vertexes (but since there are no β€œreal” dupes, id rather leave them since it has no impact on the weird artifacts i notice, tried that). So in short, yes i tried all that came to my mind without success. :frowning:

BTW the very same model renders just fine in any other app, its just the internal raytracer

ooops nevermind, i forgot i was playing with the cvs version. I guess thats just broken atm, works fine with 2.41. Sorry for the confusion:o