#light probe system taking 14ms per frame!

1 messages · Page 1 of 1 (latest)

thick marsh
#

i've discovered that light probe system update is taking a significant amount of time. i'm not using lightprobe at all in the game so i'm not sure why it's doing all that compute, and i couldnt figure out a way to shut it down. is it possible to do it? did i catch a red herring in that it's NOT actually light probe but something else taking so long?

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thick marsh
#

after disabling lightprobe on several renderers, i can see this value quickly tick down, which is great, but i definitely don't want to go about disabling lightprobe for every single of my renderer.

thick marsh
#

after some research

    var world = World.DefaultGameObjectInjectionWorld;
    var systemTypes = world.Systems;
    
    foreach (var system in systemTypes)
    {
        if (system.GetType().Name == "LightProbeUpdateSystem")
        {
            system.Enabled = false;
            // Debug.Log("LightProbeUpdateSystem disabled");
            run  = true;
            break;
        }
    }

this can disable the system, however renderers taht don't have blend probe set to null will render incorrectly. doesnt seem to be a way around it 😢

thick marsh
#

ok i have arrived at this janky solution

using Unity.Burst;
using Unity.Collections;
using Unity.Entities;
using Unity.Rendering;
using UnityEngine;

[BurstCompile]
public partial struct DisableLightProbeSystem : ISystem
{
    public void OnCreate(ref SystemState state)
    {
        state.RequireForUpdate<BlendProbeTag>();
    }

    public void OnUpdate(ref SystemState state)
    {
        var ecb = new EntityCommandBuffer(Allocator.Temp);
        foreach (var (blendprobe, entity) in SystemAPI.Query<RefRO<BlendProbeTag>>().WithEntityAccess()) {
            ecb.RemoveComponent<BlendProbeTag>(entity);
        }
        
        ecb.Playback(state.EntityManager);
        ecb.Dispose();
    }
}