Reality Converter USDZ transparency not working properly

Question

Created Oct ’22

Replies 3

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I'm trying to convert a model from Blender to USDZ, and I am having trouble getting alpha map to show transparency properly on the hair and eyelashes.

As you can see, the hair becomes too transparent with a white sheen over the surface. It is not just the hair, but also eyelashes and hair piece are more transparent than they intent to be.

I have tried using different file format for the opacity map, but it seems Reality Converter can only read png or jpeg. I have also tried using a diffuse map that is transparent (pre-multiplied?) png, and it also doesn't work.

Answer 1

loull_aroll OP

Oct ’22

Was able to find a solution to working with alpha maps using Vectary app (vectary.com). There I was able to change the property of the alpha map from opacity to mask. The white streaks/outline was caused by the roughness being to low. Hopefully this would help anyone who encountered the same problem. Cheers.

Answer 2

loull_aroll OP

Jan ’23

Follow-up: The transparency map needs to be in the format of PNG-24, (File>Export>Save for Web(Legacy). You can try different PNG-24 profiles. What worked for me most of the time is ticking transparency, convert to RGB>Legacy Macintosh. Also play around with the contrast, I find the more contrast, the better it reads in reality converter.

Lastly, put the edited transparency map into Vectary, and it should work.

Answer 3

Kitae OP

Feb ’24

I'm trying this method but using Apple Reality Converter and manually assigning the Opacity Map (PNG 24 Legacy Macintosh No Color Management) but I am still getting the same ghosting issues you described. There's such little documentation on this for something so simple, but definitely seems like a bug.

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