How to draw text on transparent background?

I am trying to draw text on transparent canvas, the result bitmap should be overlayed on another canvas with colored background.
But drawing without any background color make semitransparent pixels around text are black. It seems like canvas can't mix transparent background and actual semitransparent color of text correctly.

Example

Any suggestion?

https://stackoverflow.com/questions/65516484/how-to-draw-text-on-transparent-background December 31, 2020 at 12:02PM