Gamers usually want 60fps. 24fps or even 30fps is not enough.
On a 3DTV over HDMI, there are 3 choices to what format to output retain 60 fps: 720p framepacked (HDMI 1.4 only), Side-by-Side, or checkerboard.
720p framepacked is terrible on 1080p displays. The vertical and horizontal must be stretched by a non integer factor. Meaning pixels don't line up. Scalers can do a pretty good job for video, but when it comes to PC display, non integer scaling is nasty. You get an end result worse than native 720p.
Checkerboard and side by side are different. They scale perfectly into 1080p. They are truly the next best thing to getting full 1080p60 per eye.
Many new TVs no longer support checkerboard, leaving Side-by-Side as the most versatile and compatible format. The xbox 360 uses SbS format with it's HDMI 1.3 output. PS3 upgraded to HDMI 1.4 for framepacking. A moot point as the consoles can't render much more than 720p at the best of times.
The landscape for PC gaming on 3DTVs is complicated.
Tridef and IZ3D support Side by Side, which works well with all 3DTVs. However Tridef and IZ3D are not always perfect drivers. Game support is an issue for some.
Nvidia offers 3D drivers. They work very well with most games. If you buy the nvidia vision glasses and emitter, you can get checkerboard output on DVI/HDMI, there is no Side by Side mode. Which is unfortunate, since many new TVs don't support checkerboard.
Also, it's a shame you need to buy the expensive Nvidia glasses and emitter if you're using a 3DTV.
That's where 3DTV Play comes in. It lets you use the Nvidia 3D drivers without the glasses and emitter, but it offers only 720p framepacking. If you'd like to pressure Nvidia to release Side by Side for 3DTV Play, post here: http://forums.nvidia.com/index.php?showtopic=203266
So there's no great solution for PC gaming on 3DTVs as of now. I recommend using Tridef and IZ3D in either side by side or checkerboard.
How do you play PC games on your 3DTV? What is your opinion? Post your thoughts in this thread.