The problem happens when not using bump maps at all. Here, a small solid sphere is just poking out of a big checkered one behind a refracting lens object (left). Changing the small sphere to be totally transparent we see artifacts in the P6 render (center) but not in the P5 render (right). The artifacts occur in the region where the transparent object intersects another object. Notice the checker pattern appears in the artifact. (Perhaps OT, I remember Bryce having difficulty rendering transparent object intersections). P5 seemed to have this licked. So, what new code in P6 having to do with objects near each other, angles of objects near each other, intersecting objects, that might be causing this? Ambient occlusion, crease thresholding, something else entirely?

Message edited on: 05/27/2005 10:06