AO baking problem - white pixels on dark areas

Bomber

I'm currently working on the low poly version of a knife (for the monthly noob challenge), on 3DS Max, and I keep getting this issue whenever I try to bake the ambient occlusion map, using the Default Scanline Renderer. I get these white pixels/artifacts, but only on the areas which are darker/deeper into the high poly model.



I should mention that the normal map is baking alright, I currently have no problems there. I've tried modifying the geometry a little and playing around with the render settings, but I haven't been able to fix this yet, or find a solution online. Do you know what might be causing it?

Eric Chadwick

Try enabling Global Supersampling. It does anti-aliasing where the highpoly overlaps itself, like in these deep creases.

http://help.autodesk.com/view/3DSMAX/2015/ENU/?guid=GUID-0ABE24E1-E11C-475D-A403-19A5E4119F09

Bomber

Thank you, I was using Hammersley in the first place. I tried using different supersamplers, different filters, changing the Raytracer/Light Tracer options, modifying the cage and other things, but nothing worked (the only thing that seemed to work was deleting the Skylight, but in that case the map was wrong). I switched to Mental Ray and I didn't get that problem there, but still, it remains an awkward issue...