So, I have tested my HTC Vive....
And to be honest, it is both impressive and disapointing:
1/ Racing games: Immersion is way better than anything I have tested: triple-screen, 3d tvs, curved screens, my triple curved screens set-up, etc.
I tested project cars with a x-bow.... and I started to move my hands to touch the virtual cockpit... Amazing. I was trully believing I was seating in the car !
To give an other example, using shifter paddles seems very weird when the avatar uses a shifter
2/ The vive screens have a 1200x1080 for each eye... but the images displayed have a circular shape so in fact, the image you see is within a circle which is in a 1200x1080 pixels rectangular shape.
Calculations done, I estimated the image to be roughly 1 million pixels detailed... more or less what you get with a classic 720p 16/9 image.
3/As you are much closer to the screen than when you look at a tv, this number of pixels is way too low for "real gaming". It is ok for all the demos and mini-games things but for a racing game, it is a different story.
4/ To make it simple, in a racing game like project cars, the interior of the car is ps4 grade, mid-distance objects seem ps3 grade and long-distance objects feel ps2 grade.
5/ For real games (racing, fps, etc), testing the Vive gives a taste of the crazy resolution that would be needed for VR gaming to deliver its full potential (4000x4000 pixels ?)
6/ So this is a great experience, my kids love this. But for real gaming, I would say that the Vive and the Rift are to VR gaming what the Iphone 1 was to smartphones: principles are there but it needs to evolve a lot.
7/ Triple screen set-ups should be kept for a few years !
NB: for some reason, the "direct feed" videos you see on youtube (or on the pc screen while you wear the Vive) look much better than what you feel in the headset. Aliasing, etc. Again, I think that it is linked to the resolution versus eye-screen distance ratio and to the fact that immersion makes your brain try to focus on low details objects when using the Vive. On the contrary we look at the game image or video more globally when seeing it classically on a tv or pc monitor.