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marcoromero
Up and Coming
June 7, 2013

Motion Blur/Distortion Question

I was happy to find out my Rift arrived yesterday and its been an amazing experience. The only question I've got is regarding this motion blur, or some sort of distortion when I move my head around. If I don't move my head as much, everything feels smooth. The distortion occurs during head movement.

I'm using the Oculus World Demo for Mac on its default settings. In fact, if I F1 and switch to No Stereo or distortion, everything moves smooth, but visually everything looks "fish eyed". I'm also on low latency full-screen and my system resolution is at the recommended 1280x800.

I checked the my primary (computer) screen, and the frame rate is at 60. This is happening with every demo I play. If anybody could point towards a similar topic on the forums, or maybe has a rough idea of what my problem might be, I'd appreciate it. Thanks all!

Update: I checked out the Troubleshooting section at the Wiki and the last topic recommends putting the headset on the primary monitor port. That I did, but still no change.

    5 replies

    LaurentMT
    Participant
    June 7, 2013
    Another thread about motion blur : viewtopic.php?f=26&t=701&hilit=motion+blur
    marcoromeroAuthor
    Up and Coming
    June 7, 2013
    "LaurentMT" wrote:
    Another thread about motion blur : viewtopic.php?f=26&t=701&hilit=motion+blur


    Hey thanks Laurent. Interesting discussion.
    marcoromeroAuthor
    Up and Coming
    June 8, 2013
    After playing around a little, I found out what my problem was: my video card's anti aliasing is not performing well. If I make a build with it off, I get smooth gameplay.

    I also tried making a simple scene: a plane, a couple of cubes, turned ON the anti aliasing and got a better frame rate, still not decent but better. The good news is that I can start working on something with Anti Aliasing off. Edges look jagged but it'll do for now.
    geekmaster
    Up and Coming
    June 8, 2013
    "marcoromero" wrote:
    After playing around a little, I found out what my problem was: my video card's anti aliasing is not performing well. If I make a build with it off, I get smooth gameplay.

    I also tried making a simple scene: a plane, a couple of cubes, turned ON the anti aliasing and got a better frame rate, still not decent but better. The good news is that I can start working on something with Anti Aliasing off. Edges look jagged but it'll do for now.

    That is very interesting, and would explain the heated debates in various threads about motion blur. Some people complain vigorously about it, and others say they cannot see it (at least at the level being complained about).

    Perhaps others who have this complaint need to adjust their video card anti-alias settings like you did.
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    WIHcVVjaG3a0s5I
    New Participant
    June 18, 2013
    Could you ellaborate on how to turn off antialiasing? I'm on a MBP 2009 GeForce 9600M GT and I experience the same issues: when using the no distortion version I perceive head rotation as smooth, and when using the distortion correction version even vertical head movement seems to stutter and lag behind. Pressing F4 on my machine seems unable to change antialias settings, I checked in with a debugger and despite setting multisampling to 4 it always shows up at 1. So presumably I can't run antialiasing on the world oculus sdk demo?

    Since I'm unable to figure out how to turn on/off antialiasing the only thing I can say is that running the world demo without distortion gets me between 240-350 fps depending on location, and when turning distortion it drops to 50-120. Maybe framerate is the issue rather than antialiasing? (cue "you can't see more than 30fps anyway" answers...).
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