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MikeF's avatar
MikeF
Trustee
12 years ago

Any way to disable low persistence?

So its clear now that i'm in need of a video card upgrade if i want to get things looking nice with my current project, but as i'm strapped for cash rite now i'm trying to find some solutions in the mean time for dealing with judder when dropping below 75fps.

So is there any way to disable the low persistence feature so that i just get motion blur instead of judder? I know its not a long term solution but i had a lot easier time developing with blur on the dk1 than what i'm getting now with the dk2.

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  • knack's avatar
    knack
    Honored Guest
    some unity demos have keyboards for disable LP, (i remember one was f1)
    if its a ue4 demo, open console and type hmd lp
  • Interesting, thanks!
    Does anyone have any info on how to go about implementing this into a unity project?
  • In Unity, you can call OVRDevice.SetLowPersistenceMode(false) to disable low-persistence, I believe.
    Pass true to the same function to re-enable.
  • It appears that the feature to disable low persistence has been removed from the SDK.

    Anyone can confirm this?
  • It hasn't been removed, it's now exposed the same way as in the C++ SDK. Try this:
    uint caps = OVRManager.capiHmd.GetEnabledCaps();
    caps &= ~(uint)HmdCaps.LowPersistence;
    OVRManager.capiHmd.SetEnabledCaps(caps);
  • Although I'm not using unity, so don't know if you can do these things in it, but if saving fps is all your trying to do you should add a monoscopic option or lower resolution camera textures option. I feel keeping low persistence on is very important because without it, it makes me very swimmy in the head in dk2 in seconds. For some reason in dk1 it doesn't bother me so much but dk2 without low persistence, that blur makes it unplayable for me. I also don't have the greatest card (gtx650) and found most of the time i can just reduce the camera texture resolution to keep up frame-rates while testing or use monoscopic depending on what I'm doing. at least those things don't make you feel sick. Just thought worth mentioning other options if the blur makes you sick like it does for me.