View Full Version : "Raytrace Occlusion"-- What Does It Do?

05-21-2008, 09:54 PM
Call me dumb, but I cannot figure out what the "Raytrace Occlusion" checkbox in the Render Globals panel does. When I check it on or off for a test scene, I can see it has some effect (images look slightly different with and without it) but it's so subtle I can't tell exactly what's going on. It's not mentioned at all in any documentation I can find.

Please advise.

Edit: sorry, never mind, I just realized it's new in the 9.5 open beta. I will discuss it in the proper forum.

05-21-2008, 11:39 PM
hi giacomo,

if i'm not completely wrong, when you have an not sufficient number of ray bounces, traditionally the backdrop will be used for that single image pixel where the ray stops its travel. with raytrace occlusion checked, the last hit surface of the ray will be used and rendered. please correct me if my understanding was wrong.

it's an option already present in render globals in LW 9.3.1.