App transparency not working on Mac?

[Waliactico]

Hi, I'm trying to make a transparent window app and everything works correctly on Windows, but I can't make it work on a Mac. Worth noting I'm building from a Windows machine, but I never had issues with this for anything else.
When executing the app in Mac, the background shows black, not transparent as it should be and how it looks in Windows.
Even the example scenes from the Sample project don't work correctly not showing transparency.
The macOS version is Sequoia 15.2.
How can I make the transparency work on Mac?

[kirurobo]

Plugins may fail to load in builds for Mac created on Windows due to a mismatch between the plugin's .bundle and the application's overall code signature.

Please check the application's log on your Mac at ~/Library/Logs/(Company)/(YourApp)/Player.log.
Does it contain messages like DllNotFoundException or code signature invalid related to LibUniWinC?
If so, re-signing it might make it work.

Please try executing the following commands in Terminal:

xattr -cr YourApp.app
codesign --force --deep --sign - YourApp.app

[Waliactico]

Yes, it shows dll errors:
DllNotFoundException: LibUniWinC assembly:<unknown assembly> type:<unknown type> member:(null) at (wrapper managed-to-native) Kirurobo.UniWinCore+LibUniWinC.AttachMyWindow() at Kirurobo.UniWinCore.AttachMyWindow () [0x00000] in <1a9fa33d324b479199432ce67587c03f>:0 at Kirurobo.UniWindowController.UpdateTargetWindow () [0x00023] in <1a9fa33d324b479199432ce67587c03f>:0 at Kirurobo.UniWindowController.OnApplicationFocus (System.Boolean focus) [0x00003] in <1a9fa33d324b479199432ce67587c03f>:0

and many others similar with any related call.

The xattr command was needed to be applied so even open the app, otherwise it shows as a "damaged" app.
Tried applying also the codesign command to re-sign, but the same issue persists, dll error and app has no transparency. Could there be any other workaround to build correctly for Mac from Windows?

(Sorry for the late reply, I've been on vacation since my post!)

[kirurobo]

As a test, I made a build with code signing set to adhoc.

When using the Git URL with the Package Manager, you can use the following:
https://github.com/kirurobo/UniWindowController.git#preview-upm

How about using this one?

[cchoi94]

Just tried this myself and got it working when I switched to the built-in pipeline rather than URP. I'm building from a Mac.

ref: https://www.reddit.com/r/gamedev/comments/1jy8ksi/need_help_with_transparent_window_in_unity_for/