it's entirely "bidimensional" , but i made horns wearable for my character , it's 2 "cylinder" so it's tridimensional , and it has the same problem , so i dont know how to solve it :confused: add lights for my wearable horns is far to be a solution anyway EDIT : finaly , the problem of bidimensional was right , i wore again my horns and the sun light the good face of my horns , thank you so much ;)