I've been editing portraits for some time now for NBA2K10 (I think is quite similar to 2K11 and 2K14) using Photoshop and IFF-CDF Studio) and I still don't know how to get that "smooth edge" effect the original portraits of the game have. Here's an example of what I'm talking about:
Original portrait of Ilyasova (the game doesn't show portraits like this):
Same original protrait with the transparency button (the game shows all portraits like this):
Does anybody know how to do it properly? I've been editing the pics with Photoshop and saving them as DDS files, 256x256 and creating the mipmaps, but no "smooth edge" Am I missing something in the process?