Introduction - If you have any usage issues, please Google them yourself
Experimental observation model dimensions refer to OpenGL. Required to modify the code to achieve the following requirements: 1. Material by setting makes desktop and four-legged different colors, namely: (1, 0, 0), (0, 1, 0), (1, 1, 0), (0, 1, 1), (0, 0, 1) 2 by setting the tea material that is golden yellow