Hi, (I originally sent this to the GEM-dev list but i figure others on here might be interested in this information)

I've added the ability to do active [crystal glasses] stereo in gem [using the X version] and am attaching the diff. If you have a stereo enabled video card and a display that can support it this modification will open a stereo window by default and then you will be able to use this additional stereo mode [3]. If you don't use this stereo mode there should be no change in what you see, if your videocard doesn't support [or isn't set up for] active stereo then you won't be able to use this stereo mode as you won't have a stereo window that you're drawing to.

I've only added stereo windows for the X version of Gem but it really shouldn't be hard to get it working for Windows or Mac, all that needs to be done is to open a stereo window by default if it is supported by the graphics card.

I've attached a diff to the most recent CVS, hopefully this will be useful for other folks.

-Alex Norman