Originally Posted by bd2003
I guess you're sending side by side or over/under then?
NVidia doesn't export a 3D signal, the monitor has no way of decoding it (like a TV does). What it does is create whatever signal the monitor needs to display it without having to decode, then sends that
to the monitor. In the case of a passive, it's sending a single 1080p (in my case) image that displays in an "interlaced" fashion. When the monitor displays it, those interlaced lines match up with the retarder layers, and viola (this would work just as well on my TV as it does on my monitor, as they use the exact same tech for the screen). For active, I presume the graphics card sends them in sequence (LRLRLRLR, etc), which is then matched up to the timing of the glasses. That's where the otherwise proprietary 3D Vision tech comes from.
The downside of the way it renders passive is that the game must
be 1080p. If I tried downsampling a game, or rendering at a slightly lower resolution to increase performance, those interlaced lines would no longer match the retarder layers on the monitor, and the effect falls apart. I had that happen when I first switched to this monitor, because I had certain games that were still rendering in 1680x1050, the resolution of my original monitor. That's not something that happens with native 3D displays like the TV.. it can receive any 3D signal, regardless of resolution, upscale it to match the screen, and then use it's own decoder to create the 3D images out of the two that it received. That's how the consoles do it... they're limited by the HDMI standard to 720p for 3D signals for anything higher than 24fps. For now, anyway... I honestly don't know how that's going to work down the line, or whether my TV will be able to take advantage of the newer standards (I'm not sure if it's something that can be done by firmware update).
Originally Posted by lurkor
Nope, it's standard, pre-war, legacy, passive 3DVision tech. The PC believes the HDTV is a Zalman monitor and everybody is happy.
Of course, that means me and everyone else who uses this trick is screwed if NVidia ever removes support for those monitors from the driver.