Unity之老shader改造成URP shader

参考：

1. unity渲染管线及升级URP

https://blog.csdn.net/yx314636922/article/details/124604783

 

2. Unity内置Built-in到可编程URP函数对应整理

https://www.pudn.com/news/6228dc909ddf223e1ad28c0a.html