I vertex painted a mesh in RGB now, How do I use the vertex colors to blend 3 textures together?

So I vertex painted my terrain mesh in RGB. Red is cliff, Blue is ground and Green is mud.

I prefer this over texture painting because I can adjust each texture scale without repainting a very large terrain.

Use the Separate RGB node under the converter section. It’ll let you get each color channel.

hi there.I need this for paint a plane.can you explain how i start. thanks

Start a new thread and describe what you’re trying to do in more detail.