Unity Dynamic Batching

 1 public class test1 : MonoBehaviour {
 2 
 3     public GameObject prefab;
 4 
 5     void Start()
 6     {
 7         for (int i = 0; i < 100; i++)
 8         {
 9             GameObject tmp =  Instantiate(prefab) as GameObject;
10 
11             //Make sure you don‘t clone the material at runtime. If that‘s the case, then every object will have its own duplicated material.so they can‘t dynamic batching
12 
13             //For example, this kind of code causes a cloning:
14 
15             //renderer.material.color = Color.white;
16  
17             //In that particular case, vertex coloring is a workaround to change the color without duplicating the material.
18 
19             //Try to use only renderer.sharedMaterial or renderer.sharedMaterials.
20             tmp.GetComponent<Renderer>().material.color = Color.red;
21         }
22     }
23 }