Mesh turn transparent in View port

[AramAvetisyan]

@brr

@maru

Could you please share this scene with us? (or a similar one where the issue occurs) - https://support.chaos.com/hc/en-us/requests/new

Hello Maru,

I have submitted the scenes with ID #116656.

Best regards

@brr

I also have the same issue in some scenes, and as an alternative to Romullus’s solution, you can leave the transparency as it is (object sorting), but change the material rendering level from advanced material to basic material.

Please look at my attachment.

This issue is related only to “Advanced Material” option in Viewport preferences > Settings (first tab) > Material Rendering Level.
There is non-transparent material applied to the blue object and the expected result is to not see anything through it. Changing this option to default “Material Editor Setting” or “Basic Material” fixes everything.
And this is a 3ds Max glitch rather than anything related to Corona.

The original issue:

@Shot12

Hey Maru, thanks! Sorry for not answering sooner.
Someone broke into our office a few weeks ago and stole some of our equipment, but we’re back with renders again.

Using 3dsmax 2023 with corona 9.

Tried with alt X and no luck, objects still show transparent. i think it has something to do with vrscan materials.
I was able to replicate the problem with the tea pot, but only using scanned mats (file atached below).
Also have other file with some parts from our production renders, where it happens to most materials. In that file we also used vrscan mats but only on “carpaint and carbon”.(170 mb file). How can i send you this file?

Thanks!

is related to CoronaScannedMtl, and has been resolved already in the daily builds (01-24 DB).
You can test the scene with the latest daily build and see if the issue is still there:
https://forum.corona-renderer.com/ Chaos Corona 10 for 3ds Max - Daily Builds Changelog #msg212584

Remember to back up the scene(s) when opening them with Daily builds.