Passthrough Sample Scenes Do Not Show Underlay Passthrough

[ARGs-code]

The passthrough sample scenes, both Passthrough_Projection and Passthrough_Planar silently fail to display the Passthrough view when Underlay is chosen.

Overlay works as intended. But when choosing the Underlay option, the entire passthrough view just disappears.

We have referred to the recent documentation and ensured that Passthrough and the other required options in the OpenXR Vive XR support feature groups have been enabled.

To reproduce:
Create a new Project in Unity 6, Choose URP for your render pipeline.
Import OpenXR and Vive OpenXR SDKs.
Import Vive Open XR Samples.
Load Passthrough_Projection or Passthrough_Planar scenes.
Build and run to your Vive Device.
Push the appropriate button to generate the passthrough view.
Enable Overlay and see the passthrough appear.
Enable Underlay and see the passthrough disappear.

[srl87]

When using Underlay for URP, remember to disable the HDR and post processing.

[ARGs-code]

When using Underlay for URP, remember to disable the HDR and post processing.

Hello, thank you for this suggestion! Those changes have been made, but Underlay still does not function, while overlay works fine as before.

Please see attached screenshots and let me know what may have been done incorrectly. Your instructions are a little vague, for me as I don't know how to completely disable Post Processing in URP. The only Post Processing checkbox I'm aware of is the one for the Camera, I don't see a way to disable Post Processing in the Render Pipeline Asset.

You can see here that HDR is disabled, and that the PC_Renderer (currently being used by the Camera in this sample project) also has it's Post-Processing Checkbox unchecked.

[srl87]

Please also check the camera clear flags is solid and background color is black and transparent.

[ARGs-code]

Please also check the camera clear flags is solid and background color is black and transparent.

Yes, that is already how the camera is setup by the Sample Scene.

[ARGs-code]

@srl87 any other suggestions to get this working on URP in Unity 6?

[ARGs-code]

Guess we will stop trying to use URP.