passthrough Need help on making passthrough work for PCVR with XR Elite

[Kaworu]

Hi I have been struggling with getting passthrough work for PCVR over the past month. I have followed the set ups https://developer.vive.com/resources/openxr/unity/tutorials/passthrough/ and 

But still didn't make it work. Does anyone know how to submit the alpha layer to SteamVR exactly? This was the only step that I missed out. 

And whenever I called CompositionLayerPassthroughAPI to create Passthrough in my scene, it just crashed the program immediately which it was fine in the sample scene without showing Passthrough. Although I did see passthrough session has been created in my scene but just can't call the line CompositionLayerPassthroughAPI.CreatexxxPassthrough(LayerType.xxx), does anyone know the reason?

Any help would be appreciated 😭🙏

 

[VIVE_chengnay]

Hi @Kaworu,

Could you provide the VIVE OpenXR Plugin and Vive Hub version?

[Kaworu]

@VIVE_chengnay Hi thanks for the reply! I am currently using VIVE OpenXR Plugin 2.4.1, VIVE Business Streaming 2.0.9 and VIVE Business Streaming app: 1.1.21.33

And I've just tested the sample passthrough scene in a new unity project, it failed to create the passthrough session as well.

[VIVE_chengnay]

Hi @Kaworu,

Could you try below method to check if passthrough works fine on new Unity project?

Try setting the background color's alpha value of Camera object to 0.

After turning on MR with passthrough, you will be able to see passthrough in your headset.

[Kaworu]

Hi @VIVE_chengnay, yes I did try those settings before.

After giving it a few tries, I somehow managed to make the projected passthrough work in a new unity project with the sample scene, but it has a new issue now,

which it only works on left lens of my XR Elite headset while the other lens cannot see the projected passthrough.

Any idea about the issue? Thanks!

[VIVE_chengnay]

17 hours ago, Kaworu said:

I somehow managed to make the projected passthrough work in a new unity project with the sample scene

Hi @Kaworu,

Is this the sample scene provided by our VIVE OpenXR Plugin?

Other than changing the alpha value, did you modify other settings?

Please help me to clarify below 2 items,

1. Double tap the power button on your headset, are you able to see passthrough with both eyes?

2. Please provide screenshot of your SteamVR Settings' Manage OpenXR API Layers