OpenGL的程序，带有光源纹理材质效果的环。可以通过键盘交互，可以旋转，开关光源，填充取消材质效果等，具体请看内部注释。-OpenGL program, with a light texture effect of the ring material. Interaction through the keyboard, you can rotate, switch light, fill material cancellation effects, and details, please re