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hugoar's avatar
hugoar
Protege
2 years ago

Passthrough with Unreal Engine 5.1.1. underlay

Hello I try to setup a simple AR project that runs on PC with Oculus Link on a Quest Pro with a passthrough background and 3D objects over it. I have followed the official documentation https://developer.oculus.com/documentation/unreal/unreal-passthrough-overview/ and manage to have see a passthrough but it is always on top even if I configure it with "underlay" option.

What I am missing to make it works? What are the important settings to have in mind (for instance I have Enable alpha channel through tonemapper)? Does Forward/defered rendering have an issue on the result? DX11/D12?
Also is it necessary to use the Oculus fork of Unreal or a regular Unreal with MetaXR plugin is ok?

 

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  • Does anybody manage to apply passthrough to a specific object with PCVR (like a window passthrough object in the CG world)?

    the documentation is simple :
    material with transluscent, unlit, opacity 1 and write only alpha true.

    this doesnt work for me. any solution? 

  • Hello everyone! I have a big trouble. I can't enable passthrough in any project except oculus fork passtrhough sample project. It's just don't want to work.
    I use meta quest 2

    • Coolcatintown's avatar
      Coolcatintown
      Explorer

      Thanks amx95! This Solves my problem. For everyone who encountered the same situation, that setting pass is Project setting - Engine - Rendering - Postprocessing - Enable alpha channel support in post processing - Allow Through ToneMapper

  • And I forgot to say that I don’t package the project with a build, but work from the editor

  • I have experienced another bug with passthrough that appears randomly on build. Sometimes the passthrough appears very dark and red, it is very strange. Generally I close the oculus app and reboot the headset and it works again. I wanted to know if some of you experienced the same bug? Do you have an idea of what it could be?

  • Hey, I'm also facing issues with passthrough. When play in editor everything works fine but when a package it for APK file and play it on my Quest, its just show passthrough mode like its appearing on front layer.
    Need help!!

     

  • I am having the same issue, the Passthrough Underlay with 3D Mesh work fine in the Oculus Fork Sample project, but when I try to the exact same documentation, only the Passthrough shows and no 3D Mesh.

    Please help.

  • Did you solve the problem yet? I suddenly come across this situation. I have no idea what's going on.