Panda exports .X files. But it looks like it only makes BMPs out of your textures? BMP supports alpha but it's only on/off alpha IIRC. You should try .DDS format instead, which is Microsoft's texture format so it will work with .X files. Do you have Photoshop? Nvidia makes a plugin for Photoshop that saves in DDS format.…
No, this looks like a depth sorting issue, a common problem with alpha blending. We have some info on it here... http://wiki.polycount.com/TransparencyMap#Sorting_Problems
How is the model 2-sided? For the best results, it's best to manually create backfaces, rather than using a checkbox or material setting. If the backface was created automatically it could have been assigned a different material, one without transparency. Unlikely but hard to see how else your problem occurred.
I have a question. I am using Vray, Maya, and photoshop. The area of my Alpah'a, that should be transparent is but only when the plane is single. When my plane with Alpha texture, is over lapping a duplicate I get Black in the Transparent area. Any solution's?
Basically yes. But for the window/wall example, you generally use a different material for anything with alpha blending, so the window would be a separate material from the wall, and the wall would never have a rendering problem. The biggest reason to do it this way is for faster rendering... alpha blending is (relatively)…