NVIDIA has certainly been more active in 3D than ATI/AMD has as of late, but it looks like the situation may be starting to change, as AMD has taken advantage of the just concluded GDC to lay out its new Open Stereo 3D Initiative. While the company isn't yet drumming up too much fanfare about it (or even issuing a press release), it does seem to have gotten things started on an ambitious note, with the initiative promising to provide consumers with "more choice, more innovation, and lower cost." In the nearer term, that will apparently translate to products l