topic Vuforia Decal Rendering Issue in Vuforia Studio

Vuforia Decal Rendering Issue

OHNO — Wed, 30 Apr 2025 05:02:13 GMT

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

Re: Vuforia Decal Rendering Issue

OHNO — Wed, 30 Apr 2025 08:19:45 GMT

i am not sure, what the issue

Re: Vuforia Decal Rendering Issue

OHNO — Mon, 05 May 2025 08:18:38 GMT

in vuforia in vuforia

in NX /Instalod/ blenderin NX blender or instalod

Betreff: Vuforia Decal Rendering Issue

mwodarz_INNEO — Mon, 05 May 2025 16:23:15 GMT

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

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.

Betreff: Vuforia Decal Rendering Issue

OHNO — Tue, 06 May 2025 11:24:44 GMT

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?

Betreff: Vuforia Decal Rendering Issue

mwodarz_INNEO — Tue, 06 May 2025 12:28:34 GMT

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

Re: Vuforia Decal Rendering Issue

RolandRaytchev — Mon, 12 May 2025 08:19:18 GMT

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.