3d tv/monitor support

[Xetick]

After reading reviews and test for almost 9 months I finally took the leap and got a new 50" 3d tv and after watching a few 3d movies I, as a coder, of course want to try to make my visualizer show some scenes in true 3d. The question is how can this be done using OpenGL and in a way that preferably isn't vendor locked in to nvidia?

It seems like DirectX do have support for this but the support in OpenGL requires 'pro' quadro cards and the like from nvidia so it wont work on the normal consumer cards.
The only way I have read so far that might work is to render the left eye on the first half of the screen and the right on the second half of the screen then select 3d mode on the tv. However I'm not sure this will work on a nvidia vision and it also feels silly to force the user to select 3d mode manually.

[hellfire]

I've experimented with a single 3d tv yet (some samsung 55" led shutter thing).
It switches to 3d mode automatically when feeding it with a horizontal side-by-side picture via hdmi.
I'm still wondering how it does that, though.