unity5.6 DrawMeshInstanced(),how to set the different color for any instanced?

According api: DrawMeshInstanced(Mesh mesh, int submeshIndex, Material material, List<Matrix4x4> matrices, MaterialPropertyBlock properties);how to set the MaterialPropertyBlock for per instanced?I think Maybe should be List<MaterialPropertyBlock> ?

 

You assign only 1 MaterialPropertyBlock. if you want a per instance property you need to set this up in the shader and add the property as an array on the materialpropertyblock. 1 per instance.

 

When use: Transform grassObj = GameObject.Instantiate(grassPrefab).transform;and change the color:

Code (CSharp):

1.  MaterialPropertyBlock pb = new MaterialPropertyBlock();
2.             pb.SetColor("_Color", grassData.color);
3.             grass.GetComponent<MeshRenderer>().SetPropertyBlock(pb);

,but can not batching,what's wrong? View attachment 250312

 

OK,batching is working,but ,still have waring,maybe ignore it?