I applied a panoramic image as a texture in the material room but it doesn't show: The background appears black in the pose room and renders as white. I didn't change any material settings other than adding the image; I am still baffled by them. I am obviously not doing this right, so what is the right way? Also, what size should the panoramic image be? Is it better if it's one of those distorted-looking ones, or the ones that look like a normal photograph except longer?