Culling in MeshInstanceRendererSystem

Hey guys,

I have tried to stress test and to understand MeshInstanceRendererSystem.
I drew an isometric map of 650K tiles without GPU instancing because of a crash (Case 1105764).
I set my camera to see only 700 tiles and so 700 drawcalls without batches

But I noticed that MeshInstanceRendererSystem draws 650K sprites via :


(That comes from a build)

So do I need to set LOD to discard rendering far from camera or I need to control which entity has to be drew or Unity team will add a culling system or how do you do ?

Thanks

 

Use forum search and you find thread about culling.
https://forum.unity.com/threads/is-there-culling-sample-for-ecs-jobs.532715/#post-3860695

 

So for resum how works culling in ECS from this thread and source code :

If you want culling happens, entity needs a MeshRenderBounds, LocalToWorld( added by TransformSystem if your entity has a Position or Rotation or Scale component) and a WorldMeshRenderBounds. See MeshRenderBoundsUpdateSystem

Set your WorldMeshRenderBounds with world position center and radius of entity.
Your WorldMeshRenderBounds needs to be updated manually each time entity position is changed.

Tip : you can boost culling performance if you successful group close entities in same chunk.


@eizenhorn My bad and my shame because I begun to look Culling because of this thread and your first video but I have not see the final answer

 

thanks, your conclusion was very helpful for me