The key problems have been solved :) (Patreon)

Ever since I figured out the method of projecting to the characters, I have been troubled by a very annoying problem:

there are always some confusing vertices on the skin of the characters. I tried to find information and ask questions in various places to find a solution, but it still hasn't been solved.

Today, I stared at the code for another afternoon. Suddenly, I had a brainwave, and I realized the problem :).