Black Screen on app using Unity

[TakNof]

SPECIFIC ISSUE ENCOUNTERED

Black Screen appears when looking at UI Canvas in Unity

SMARTPHONE (please complete the following information):

• Device: [Xiaomi Redmi Note 13 (Not known if the error occurs in other devices)]
• OS
  • [X ] Android
  • iOS
• OS version [15]

STEPS TO REPRODUCE THE ISSUE

1. Start a new project
2. Follow all steps shown in the docs to install the package.
3. Make a player with all the configs shown in the demo scenes.
4. Set a GameObject with the Cardboard Startup Script.
5. On Project Settings use as Render Pipeline Asset the Mobile_RPAsset
6. Disable Depth Texture in the URP Asset.
7. Enable Atialiasing MSAA in the URP Asset.
8. Set some UI canvases, whether WorldSpace or Screen Space
9. Make a build to mobile.
10. The screen will be black whenever you look at UI elements, even when the view is not blocked by any object, the "VR interface" dissapears. You can tell due the Google Cardboard icons and white line in the middle dissapearing.or a clearer look up to the error, use World Space canvases, on that way you can see how it happens whenever you turn the camera towards the UI

EXPECTED BEHAVIOR

The user should be seeing at the world and its UI elements without issues.

VERSIONS USED

Google Cardboard XR Plugin for Unity 1.31.0
Unity URP 6000.2.10f1

• Select in which graphics API you can reproduce the bug.
  • OpenGL ES2
  • [ X] OpenGL ES3
  • Metal

LINK TO A REPOSITORY WITH CODE TO REPRODUCE THE BUG

None

SCREENSHOTS

When looking at UI

When not looking at UI

ADDITIONAL CONTEXT

This issue was not happening previously on Unity 6000.0.34f1 and Google Cardboard XR Plugin for Unity 1.29.0, I updated both and this error started to happen, the console does not give any clue of what is going on with the app, the error goes undetected.

[victorveleze]

Hello @TakNof
Thanks for reporting this.
I'm following the steps that you gave above but I'm getting the expected behaviour. I added a Canvas with Google Cardboard as text and I still see everything ok. It would be really helpful if you can share more details about the problem or share a repo with the code.
I am attaching a screenshot so you can see what I am getting.

[TakNof]

Hello @victorveleze
I was making some tests using this time the sample scenes, and I saw the exact same you've shown here.
May be it's something with the object config I've done. I don't really don't know if it could be because of this, but here are some SS.

This is my player Hierarchy, as you can see, the camera is an object inside the Head, so I separated the original logic.

Inside the head object I placed the Tracked Pose Driver

The main camera component has everything that a normal Main Camera object has.

If you need more info let me know, sorry for the delayed answer.

[victorveleze]

Hello @TakNof
I double-checked and used the settings you sent and it seems to be functioning correctly. The issue might be somewhere in your environment or the way the feature is being used. Unfortunately, I’m not able to provide further assistance on this, but I hope you’re able to get it sorted out.

[TakNof]

Hello @victorveleze I will make a repository so it's easier to look up for the error. As soon as it is uploaded I'll notice you, sorry for the inconvenience and thanks for your patience.