ambient occlusion problem: getting black lines.

strub · August 31, 2012, 5:57am

Hi,

I have problems with baking ambient occlusion. I am getting black thin lines. Tried a lot, but it is still the same.

Normals look all good, uv map too.

Hope someone can give me some hint. Thanks in advance

bashi · August 31, 2012, 6:38am

have you set margin in uv? Where does the Black Lines appear? Maybe put an image here?

gruss aus bern

strub · August 31, 2012, 6:46am

Hey thanks a lot bashi. Do you mean the margin in the bake tab? if so, I have tried that already but did not work.

here is an image

bashi · August 31, 2012, 7:01am

have you checked for double Vertices? (Editmode - Spacebar - Remove doubles (or so))

no other idea atm

strub · August 31, 2012, 7:26am

no doubles. Thanks anyways.

Sanctuary · August 31, 2012, 10:15am

Do you see those black thin line where the seams are ?
If yes, increasing the “margin” (in your screenshot it is not enough) to 8 or 9 should help to remove the visible seams problem.

edit : if you mean the black thin line inside of each UV island, it’s a problem i have faced countless time without finding a solution, it’s like Blender completely ignore that you set the model to “smooth” and will bake the AO like if you had set the object to “flat”