Support for transparency.

[arteevraina]

I tried to create a fork of this and remove the assertions for transparency. It did not work as expected. Can you point me to the code where can I implement support for transparency on my own?

@ueman

[ueman]

Unfortunately, I have no idea. I never looked into it more closely. That being said, I would start by looking into the Flutter APIs to see whether they support transparency at all.