Ambient occlusion is calculated wrong if particle size is only set on one particle type
Open any LAMMPS data file with at least two atom types. The initial particle radius for all types defaults to 0 which will give them a radius slightly larger than 1. Ambient occlusion modifier works well here.
Now, if you set a radius on particle type 2 (radius 0.7), but not type 1 (radius = 0), ambient occlusion is somehow calculated wrong and the atoms without a radius are rendered very dark.
I'm using Ovito 3.0.0-dev123.
Edited by Anders Hafreager