In 4.12 version’s engine I can automatic using htc vive head device to control HMD for debug VR game in editor but after I change the engine to 4.13 the HMD control in Editor is no more in using? Does any any setting for open this feature in 4.13 ?
All you have to do is set it up as it is written here.
Make sure that your SteamVR is running BEFORE you start your UE4 project.
VR preview can’t test for the multiple player game. last version I can test vr just in normal game play