A while back I was working on a personal project with the Godot game engine and found the need to blend some textures in a natural way and with artistic control. Sadly, Godot does not support vertex painting directly in engine.
That is why I decided to create VPainter – a plugin for painting vertex colors directly in Godot.
It was a big learning curve for me, but I finally managed to achieve what I wanted to. I even did a bit more than expected since in the end the software was not only able to paint simple vertex colors, but to blend, blur, sample color and even have some basic sculpting functionality.
The addon includes not only the painting functionality, but also a few shaders including an optimized height blend.
Currently the addon is only available for Godot 3.X, but hopefully soon I will be porting a new version to 4.X.