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VR shaky distorted image after update to ue4.21


We have recently updated our project from 4.19 to 4.21 and now an image is a little shaky in VR. Everything was working smoothly before an update. Anyone else had any problems like this?

Also, shaking can be noticed in a preview screen if you set "vr.SpectatorScreenMode = 3". It is not visible in any other modes.


Product Version: UE 4.21
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asked Dec 13 '18 at 11:45 AM in VR

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avatar image XendroX_Int Dec 17 '18 at 07:30 PM

Need this too!!!!!!!

avatar image Alex O ♦♦ STAFF Dec 17 '18 at 08:20 PM

Hey guys,

I'm not seeing what you're describing. What are the steps to reproduce this in a new project?

avatar image Mykhaylo Dec 18 '18 at 12:50 PM

In my case, HMDPawn BP has UsePawnControllerRotation enabled for a CameraComponent: http://prntscr.com/lwhb32 Location of the HMD is updated from live motion capture data.

Note: If I enable an option LockToHMD, there will be no lag, but it is a not a solution for me because it ads an unnecessary HMD location displacement.

Note: Everything was working fine in UE4.19 and no changes were made to Pawn or PlayerController.

P.S. We are using Oculus HMD

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So I have found an issue. Had to create a custom CamerComponent class (inherited of UCameraComponent) and override GetCameraView method.

This was a solution for me: https://answers.unrealengine.com/questions/818098/vive-hmd-lag-when-lock-to-hmd-is-set-to-off-in-420.html

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answered Dec 18 '18 at 02:42 PM

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