Both Nvidia and AMD only officially support a subset of very high refresh rate monitors for use with their 3D visualization solutions.
Glasses like mine support
"white line code" or
"blue line code" basically they use an area of solid color to tell the LCDs which eye is which.
Quote from: blueskull on Yesterday at 23:17:21>
Quote from: BrianHG on Yesterday at 23:03:31>
Quote from: blueskull on Yesterday at 22:10:51So even if you can get 120Hz signal from monitor, so what? Your GPU will randomly drop frames due to frame rate fluctuation, and if you simply divide 120Hz refresh rate, you will get randomly swapped left and right visions.
You need to know exactly which frame being outputted from GPU is for which eye, and that's not evenly distributed due to the fore mentioned frame dropping effect.
3D stereo drivers prepare a left & right frame simultaneously, then keep these 2 flipping as the next screen stereo set is being rendered. It's hard wired, you will never miss a v-sync cycling back and forth between the left and right eye. Nvidia's page-flipped stereo driver setting worked like this from day 1, over a decade ago up until today, and will continue to do so.
Now, can your monitor display the 120 independent frames fast enough to no give a cross image residue from eye to eye? Is the monitor synchronous with the video card's video output without delay, or, 1 perfect v-sync delay? If you have and LCD display, will the polarizers of the glasses interfere with the monitor's polarizers?
All these things need to work if you want to use that glasses connector...
So tapping sync signal from monitor will work? That's good to know. As for latency, G2G time is usually <5ms for modern IPS, and <1ms for modern eSports optimized STN/MVA, so at 120Hz, I don't think there will be a huge issue.
If nVidia dares to sell this technology, I guess they know to add blanking and some timing tricks to accommodate the slowest IPS on the market, or they are blowing up their reputation.