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O
OHNO4-Participant
4-Participant
April 30, 2025
Question

Vuforia Decal Rendering Issue

  • April 30, 2025
  • 3 replies
  • 1180 views

Dear PTC Community, 
I prepared models in NX with decals, and converted them with instalod and/or blender. In both they render correctly. Now if its imported into Vuforia Studio, the decals shows up but the surface disappears. So there is just the decal no surface beneath, but it blender or instalod it shows correctly. I export from NX as glb, then I open the glb in instalod or blender to optimizer polygon count to export it as fbx for vuforia studio. BTW Creo illustrate also displays it falsely. 

Newest Vuforia Studio

3 replies

O
OHNO4-ParticipantAuthor
4-Participant
April 30, 2025

i am not sure, what the issue

 

O
OHNO4-ParticipantAuthor
4-Participant
May 5, 2025

in vuforiain vuforia in vuforia

 

in NX /Instalod/ blenderin NX /Instalod/ blenderin NX blender or instalod

R
RolandRaytchev21-Topaz I
21-Topaz I
May 12, 2025

Hello @OHNO ,

that issue is reproducible at PTC and is reported to PTC R&D team as Jira Ticket VTS-2377

So as  workaround could be used some technique to remove the decal – for example after opening in Creo Parametric of the JT file and saving to pvz format then it does not have the issue (but also the decals are unfortunately not any more used) -   

Let see what is the feedback from the R&D team  on that tikcet  – if they could detect the root cause ! One possible issue I could remember , but I am not sure if that is related to this issue, is that mentioned in Article  https://www.ptc.com/en/support/article/CS443745

On iPhone/iPad for OpenGL (also means Studio) there is an general limit for texture /decals which  is 4096x4096.

While View still uses ThingView (which uses OpenGL) on view and preview mode - the limit will be at most 4096x4096 so the user  should downscale their textures.

M
mwodarz_INNEO14-Alexandrite
14-Alexandrite
May 5, 2025

Creo Illustrate can apply the labels as well. Then the PNGs are embedded in the PVZ file.

 

mwodarz_INNEO_0-1746462176732.png


Vuforia Studio cannot use GLB files. So the embedded textures (in GLB files) were not read. Also the FBX files link the textures, but Illustrate won't read them.

 

Prepare in Blender the geometry. Optimize with InstaLOT. Both tools could transfer the files via FBX to illustrate. But in Illustrate, you would loose the NURBS data that would come from NX.

 

Better way could be transfer from NX to Illustrate via STEP (or any other provides interface), so you keep the NURBS (Surfaces). Then in animation, you can use the axes as hinges. Vuforia enables optimization when importing. This optimization can be done via batch script. These optimzing uses recipe files to control and reduce polycount. It depends on the structure.

O
OHNO4-ParticipantAuthor
4-Participant
May 6, 2025

Thank you, but it still doesn't work. I exported it as a STEP file from NX and imported it into Creo Illustrate, but the decals don't show up when trying to apply them. Do you have a hololens 2, do the decals appear?

M
mwodarz_INNEO14-Alexandrite
14-Alexandrite
May 6, 2025

Is the label issue (bug) with Vuforia Studio and HoloLens still present? This was discussed several versions ago. You can search in this community for this.

No, I don't have a HL one hand.

 

Do you see the label on smart devices (when you create a simple experience using the same PVZ with the labels applied)?

Does the preview show labels?

 

CheerEO

Marco

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