Avoiding RenderMeshSystemV2.UpdateDynamicRenderBatches for static entities?

[Bas-Smit]

I convert a bunch of gameobject prefabs that I then instantiate and they render as expected. Looking at the profiler most of RenderMeshSystemV2’s time is spent in UpdateDynamicRenderBatches. At the moment I only have static entities though, so it feels like I should be able to skip this computation. I tried adding the Static to all entities, but this seems to have no effect. Is it already possible to render static entities more efficiently?

Thanks, Bas

[Singtaa]

May need to play around with FrozenSceneRenderTag. Refer to this thread: ANCIENT THREAD! - Hybrid Renderer Sandbox

[Bas-Smit]

relevant msg

example

using Unity.Entities;
using Unity.Mathematics;
using Unity.Rendering;
using Unity.Transforms;
using UnityEngine;
using Hash128 = Unity.Entities.Hash128;

public class StaticTest : MonoBehaviour
{
    public GameObject Prefab;
    static EntityQuery _noRenderSceneTagQuery;

    void Start()
    {
        var em = World.Active.EntityManager;

        _noRenderSceneTagQuery = em.CreateEntityQuery(new EntityQueryDesc
        {
            All = new[] {ComponentType.ReadOnly<RenderMesh>()},
            None = new[] {ComponentType.ReadOnly<FrozenRenderSceneTag>()}
        });

        var s = new GameObjectConversionSettings(World.Active, GameObjectConversionUtility.ConversionFlags.ForceStaticOptimization);
        var e = GameObjectConversionUtility.ConvertGameObjectHierarchy(Prefab, s);
    
        var id = new uint4(1, 0, 0, 0);
        InstantiatePrefab(e, em, new LocalToWorld {Value = float4x4.TRS(new float3(0, 0, 0), quaternion.identity, 1)}, id);
        InstantiatePrefab(e, em, new LocalToWorld {Value = float4x4.TRS(new float3(10, 0, 0), quaternion.identity, 1)}, id);
    }

    static void InstantiatePrefab(Entity e, EntityManager em, LocalToWorld localToWorld, uint4 id)
    {
        var instance = em.Instantiate(e);
        foreach (var entity in em.GetBuffer<LinkedEntityGroup>(instance))
            em.SetComponentData(entity.Value, localToWorld);

        em.AddSharedComponentData(_noRenderSceneTagQuery, new FrozenRenderSceneTag
        {
            SceneGUID = new Hash128 {Value = id}
        });
    }
}

make sure your entities show up here when RenderMeshSystemV2 is selected: