If you are using vertexpaint you would need a good amount of vertex to paint on, so if you have a plane with only four vertext, your vertexpaint wouldn’t look good…
Can you show us your plane with all its vertex?
Thanks for the reply, yes i noticed i would need to subdivide a flat plane multiple times to get a good result.
I guess in the Video it is achieved with Tesselation, which is the way i have solved it now.