Oculus CV1 image distortion
JulianGro opened this issue · comments
As I haven't been able to get any more information on this issue, I will just open this Issue here without much more information.
Using the Oculus Rift CV1 with SteamVR in Direct Mode has the image distorted.
SteamVR-OpenHMD reports distortion parameters being set in the log. According to the OpenHMD source code, these are the right parameters for the Rift.
I haven't found an application than I can try direct mode with and I don't know how you are supposed to use any application with extended mode.
The distrotion isn't gamebreaking, but clearly visible, so I am not even sure if the distortion values that come with OpenHMD are right.
Just set up a bounty for who ever manages to get this fixed, as this is somewhat important to me.
https://www.bountysource.com/issues/72293469-oculus-cv1-image-distortion
I haven't found an application than I can try direct mode with and I don't know how you are supposed to use any application with extended mode.
Hey. In the meantime I wrote down a little bit of what I know about extended mode in the OpenHMD wiki: https://github.com/OpenHMD/OpenHMD/wiki/Extended-Mode
Specifically for the CV1 someone made an issue and it turns out that the display only works while an OpenHMD app (or SteamVR-OpenHMD) is running. OpenHMD/OpenHMD#224
Unfortunately I still can't say anything about the Oculus Rift distortion, because I don't have one.
Just a suggestion, but if you are interested in testing more stuff, you can try our (Collabora) OpenXR runtime which supports direct mode and among others uses OpenHMD drivers: https://gitlab.freedesktop.org/monado/monado (simple compilation instructions)
Though right now there are only few OpenXR examples and no real applications you can run on it right now.
The display turns on no problem for me in extended mode. I just have no idea how I am going to get an application to fullscreen on that.
I did https://gitlab.com/lubosz/xrgears before, though I couldn't get it to run.
If your are up for it and maybe not too far away, I could lend you my Oculus to take a look yourself.
The distortion is very slight, correct? Do objects appear slightly smaller when at the center?
I wouldn't call it very slight. Thought it is not very bad either. I haven't really noticed objects being smaller in the center (will look out for that when I have the headset on next). So the distrortion is so bad that I have had dizzyness and headaches when I started using the oculus with this. I have gotten used to it though, to the point where I only have problems with orientation (and immersion).
What I specificly notice is that staight lines are not straight in the oculus anymore. They seem straight in the center area, but warp shortly after getting further out.
I guess I should try to take a picture of it, so people can actually see what I am talking about.
I tried my best to take some pictures:
You can clearly see everything being somewhat warped.
Here a (weirdly squished) screenshot made with SteamVR for comparison:
It might be squished, but you can still see that all the edges are supposed to be straight, rather than warped.
I can confirm this issue. I use to play EliteDangerous and I cannot because distortion.
It seems that something is doing wrong in the center. It's like a ripple and I can see it when I move the head. Just strange. It happens on SteamVR at all times on direct mode.
I managed to make a couple of videos
http://owncloud.level2crm.com/index.php/s/oGkd5ZJLbfqQ6Ag
http://owncloud.level2crm.com/index.php/s/kLwqy6tKnwMf7LE
I hope you can see it. In stereo the effect is bigger...
I just fixed CV1 lens distortion parameters in my positional tracking branch. See thaytan/OpenHMD#22
Unfortunately I don't have a Rift to test this on anymore. But I guess this can still be closed once the new parameters make it into upstream.