Hey all. So, I’ve noticed that Ambient Occlusion seems to ignore alpha maps on objects. I have a PNG with transparent areas UV-mapped to a series of connected planes bent at 90 degree angles. The image causes the planes to look like ironwork enclosing a veranda, with numerous holes of various sizes in the ironwork. The thing is, my sun lamp’s rays don’t reach the veranda because of the overhang above, so this area relies on Ambient Occlusion for lighting. When the ironwork planes (which appear to have many holes, thanks to the transparent areas of the PNG, but actually are quite solid) are in place, the verandas go completely black because the AO is ignoring the alpha.
So, my question is–is there a workaround? I know I could simply put dim lamps–most likely area lights–inside the ironwork, and I’m also trying cutting rough holes in the mesh itself for the AO to come through. But it’d be very nice if there were a simple setting I could adjust somewhere. If there’s not…well, consider this a feature request.
Thanks in advance for your help!