I heard that it is a plug-in that can paint high resolution map on low-poly model directly instead of vertex painting with a high divided model.
Is it true?
I think you’re referring to Projection Master. This paints the texture rather than vertices. It’s not real-time painting on the 3D model, though. It drops the model to the canvas so that you can paint on it, then picks the model up and transfers what you’ve painted to the texture.