I have an urgent problem to solve: I must apply the logo of a manufacture on a glass which I must animate. The problem is, although my files are in PSD or tiff, the front face is correct but the back face is completely black and opaque. I apply this image on the texture map and the alpha channel. I know that there is at least a specialist here who will be able to help me… My basic image is a .jpeg from which I removed the white zone in PS. Help please !!!