Tileset (b3dm) not existing/visible in packaged .APK on MetaQuest3

Cesium for Unreal
1

Hello everyone,

I’ve seen some similar issues but rather related to some server/cesium ion side problems:

In our packaged apk one specific tileset is not visible/existing (MaxScreenSpaceError = 1). Neither added on runtime with or as a static tilesets as seen in the editor screenshot.
No matter if this is a local tileset or streamed from a company URL the tileset remains invisible.

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For the runtime imort on VR we set up logging, that prints the load progress of each tileset on tick.
The progress starts with 0% jumps to 11.1% and then to 100%
All other tilesets load slowly as expected.

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In the Editor and the packaged Windows version (Also tried starting in PC-VR) the Tileset is loading correctly, both as a static tileset or a runtime import.

Most confusing thing is that not even the statically imported tilesets is visible in the installed app on the Quest 3.

We are using UE5.2 with Cesium v2.4.0 + v2.9.0
Tested in all engine scalability settings from low to epic.

We went back to a git branch serveral months ago (where the tilesets was 100% visible, we have still a working apk from this state) and the problem appears to be the same when we package it now.
This was then tried in UE5.1 with Cesium 2.4.0.

2

I’m not sure if you’ve seen this thread yet, but it looks very similar to the issue described in KNOWN ISSUE: Tilesets not loading in packaged Unreal apps. This solution seems to be more or less solvable by downloading the correct root certificates from AWS, but the root cause is more likely something to do with the way Unreal resolves SSL certificates. Would you mind running this sample project and sharing the log? That will help us nail down exactly what’s going on. If you’re in a hurry, installing the SSL root certificate seems to be the solution (but please run the sample project and share the logs beforehand, if possible!)

3

Hey @azrogers .

Yes, I’ve seen this post but we thought it might be unrelated due to we use our own offline data.

Unfortunately, I was instructed to work on another task for the moment.
I will come back to test the project after a time.

Thanks for your reply!

Best regards Rafael