SRP Batcher

https://www.facebook.com/notes/duynguyen-justin/custom-your-own-rendering-pipeline/683427755577468/

https://blogs.unity3d.com/2019/02/28/srp-batcher-speed-up-your-rendering/

https://docs.unity3d.com/Manual/SRPBatcher.html?fbclid=IwAR1Lg5xVEzDnh8s7SzPhjFRH4MCzd0S6khiHqmstl6BdCeM7NJQNNUb18Dk