On first launch of an AR app with Android the camera passthrough will render black. This also happens if an app is minimized and re-opened.

This will not repro if there is no candidate image assigned.

Also confirmed when packaging/installing an APK

Also confirmed in Shipping config.

Confirmed in 4.25 MAIN @ CL 11050671

No Repro on iOS (ipad A1701)

I noticed "LogRHI: Error: GetAndOrCreateGraphicsPipelineState RenderTarget check failed with: 185 !" in Device output log, but this error also occurs when app is behaving normally (after second launch)

Steps to Reproduce
  1. Open 4.23.1 and create a Blueprint -> Handheld AR Template (I must see if it works in previous version to know if it broke in 4.24)
  2.  Import Image to Project - Set Compression settings to 'UserInterface2D' Mip Gen Settings to 'NoMipmaps' and Texture Group to 'UI'
  3. Create a new DataAsset of type "ARCandidateImage" and assign texture / define width and height
  4.  In D_ARSessionConfig add your data asset to 'Candidate Images' array.
  5. Launch on Android Device (Tested with Note 9)
  6. When running on device - click 'Start AR' and accept camera permissions
    4.23 Result: Camera passthrough is instantly visible
    Update Project to 4.24
    4.24 Result: After accepting camera permissions camera passthrough will be black
    Exit app and re-launch via device. On second launch everything will behave normally.

Black screen also observed after minimizing and reopening app on phone.

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Won't Fix
ComponentUE - Platform - XR
Affects Versions4.24.1
Fix Commit13655548
CreatedJan 20, 2020
ResolvedMar 28, 2022
UpdatedApr 18, 2022
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