①细分着色器似乎不能支持GPUinstancing，图片来源：Tessellation(catlikecoding.com)

因为后面的圆和环就是跑数学公式了所以偷懒了orzusingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;usingstaticUnityEngine.Mathf;

    graph.csusingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;publicclassgraph:MonoBehaviour{[SerializeField]

  usingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;usingSystem;publicclassclock:MonoBehaviour{constfloathour