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Vuforia Area Target Creator App - No Prefab

December 12, 2021 - 1:32am #1

Hello, I'm using Vuforia  Engine 10.3 in Unity 2021.2.3f1 to process the Area Target I made with the Vuforia Creator App using an Ipad Pro Lidar.

All seemed to go well, I followed the instructions from the Vuforia website but when I select my area target in Unity it loads it but says that the Preview Prefab is not available.

Here is the detailed error:

"DllNotFoundException: VuforiaEngine.dll assembly:<unknown assembly> type:<unknown type> member:(null)

Vuforia.Internal.Utility.GLTFLoading.GLTFExtractorUtility.Initialize (System.String path, UnityEngine.Material sourceMaterial, System.Boolean ignoreMaterials) (at <322f9cfa037e43d487f9bdce5f865d45>:0)

Vuforia.EditorClasses.GLTFAssetCreator.Initialize (System.String filePath, System.Boolean ignoreMaterials) (at <0213e6f0fa134fa89db6bafa02899715>:0)

Vuforia.EditorClasses.ExtractorUtilities.ExportAndSaveMeshAndTextureData (System.String rootFolder, System.Collections.Generic.List`1[T] glTFFiles, System.String prefabFileName) (at <0213e6f0fa134fa89db6bafa02899715>:0)

UnityEngine.Debug:LogException(Exception)

Vuforia.EditorClasses.ExtractorUtilit"

I'm attaching the zip of my area target scan if anybody can confirm you get the same behavior on yourr end.

Thanks,

Arnaud

 

AttachmentSize
Package icon AlteMuseumRoom201.zip87.14 MB

Vuforia Area Target Creator App - No Prefab

December 21, 2021 - 7:35am #8

Hey,

 

Sorry for the delay in response. I did test your area target and it worked even with Unity 2021.2.x. I think your issue might related to your Mac. Vuforia Engine currently isn't supported on ARM native devices such as the new M1 Macs. This is however planned to be supported in the near future, but I cannot provide any timeframe. 

In the meantime there are two things you can do:

I'm sorry I wasn't able to provide more positive news, however I wish you already warm days and happy holidays! 

 

Kind regards,

Patrick Scheper

Technical Community Manager

Vuforia Area Target Creator App - No Prefab

December 21, 2021 - 1:58am #7

Hi Patrick, just wanted to know if you had some feedback on my message below.

Thanks.

Arnaud

Vuforia Area Target Creator App - No Prefab

December 14, 2021 - 4:13pm #6

Hey Patrick, so I gave it a try with Unity 2020.3.24f1 and I was able to see the cloud point prefab of the scanned location.

Clearly there seems to be an issue related to Unity 2021 and Vuforia Engine 10.3

That's a bit of a pity cause I'm working on a Mac M1 and they only started supporting this chip on Unity 2021.2

Do you guys have any idea when you might be releasing a compatible version?

Thanks for your precious help.

Arnaud

Vuforia Area Target Creator App - No Prefab

December 14, 2021 - 6:55am #5

Hey there,

 

I'm still using Unity Engine 2020.3.22f1 and seems that Unity 2020.3.24f1 also doesn't provide the error.

You could check with those versions and see if it solves the error?

I'm sorry you're experiencing the issue.

 

Kind regards,

Patrick Scheper

Technical Community Manager

Vuforia Area Target Creator App - No Prefab

December 13, 2021 - 7:25am #4

Hello Patrick, thanks for your prompt answer. I did try more than 10 times so far creating new projects and always had the no prefab error message. I also tried with other area targets. What unity version are you using?

Here's the full error message I'm getting:

Preview prefab for dataset AlteMuseumRoom201 is not available.

UnityEngine.Debug:Log (object)

Vuforia.GLBTypedAuthoringMesh:CreateAuthoringMesh ()

Vuforia.GLBTypedAuthoringMesh:Update ()

Vuforia.AreaTargetBehaviour:OnDrawGizmos ()

UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&) (at /Users/bokken/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)

 

Vuforia Area Target Creator App - No Prefab

December 13, 2021 - 3:25am #3

Hey Arnaud,

 

The known GLB mesh issue seems not related to your Unity issue. I tested your area target and it seems to work fine for me.

Can you try to create a new Unity project, add Vuforia Engine, and see if the issue persists? 

 

Kind regards,

Patrick Scheper

Technical Community Manager

Vuforia Area Target Creator App - No Prefab

December 12, 2021 - 2:58am #2

I went to check the release notes and found this in the known issues:

"The GLB meshes generated by the Vuforia Area Target Creator app might not be compatible with all applications or libraries working with GLB files."

I have a feeling this has to do with the issue I'm experimenting. I'm a little surprised that this known issue has been in the release notes of every single version of Vuforia Engine since relase 9.6.3

@VuforiaTeam is this issue ever going to be addressed?

The whole area target is basically pointless if we can't see the mesh to position AR elements in the environment...

Has anybody found a workaround to get the GLB mesh to be showing up properly?

Thanks for any help.

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