[Solved] SceneManager.LoadScene() make the scene darker... a bug?

Hi everyone,
i dont want to waste your time but if you would make a test, that will take less than 2 minutes.
Just take a default new scene and add a 3d gameobject with a material (not very dark).
Attach the (basic) script to the GO (or wathever). The script just reload the scene when the spacebar is pressed (as you can see).

Here after reloading the scene, the light (basic Directional light) seems loosing the half of its original intensity.
But nothing has changed in the inspector. Same intensity for Half light rendering(?!).
Other thing : the hierarchy is all collapsed...

What's wrong?

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.SceneManagement;
3.  
4. public class TestSceneScript : MonoBehaviour
5. {
6.     void Update ()
7.     {
8.         if (Input.GetButton("Jump")) // Any button you wish
9.         {
10.             print("Scene has been reloaded");
11.             SceneManager.LoadScene(SceneManager.GetActiveScene().name);
12.         }
13.     }
14. }
15.  

Thank you for making the test.

 

Thank you w1shmast3r for your answer. And yes that was Helpful .
I'm still using 2017.3.1f1.
The issue seems not happening when using Post Processing.

Thanks again

 

I'm using Unity 2020.3.4f1

I updated the code.

I attached the code to a Cube and when I press the key (space) the cube goes darker. The hierarchy is also collapsed.

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.SceneManagement;
3. public class TestSceneScript : MonoBehaviour
4. {
5.     void Update ()
6.     {
7.         if (Input.GetKey(KeyCode.Space)) // Any key you wish
8.         {
9.             Debug.Log("reloaded");
10.             SceneManager.LoadScene(SceneManager.GetActiveScene().name);
11.         }
12.     }
13. }

 

The "Light Probe Visualization" setting seems to already have Auto Generate unticked....

 

The simplest work-around I've come across is:

Go to Window>Rendering> Lighting >Environment

In Environment Lighting set Intensity Multiplier to 0

In Environment Reflections set Intensity Multiplier to 0

 

Seems the bug reappeared:
https://forum.unity.com/threads/lighting-issue-in-2019-4-21f1-lts-and-2019-4-23f1-lts.1109756/

 

Any working solution for this bug?

 

Did you try post #6?

BTW post #4 is a quick method for testing the presence of the bug....

 

A workaround in for my problem in Unity 2020.3.8f1
When I reloaded the active scene it would have the same effect as changing the lighting environment and reflections multipliers to 0.

My solution was to generate lighting next to the greyed out auto generate box under Window > Rendering > Lighting.
After generating once manually when I reload the scene with a script lighting in my scene remains at full brightness.

Posting as this is the first thread that showed up when googling to maybe help out the next person to google this problem.

 

That's a great solution - it makes the lighting go from bright to bright. (with mine it went from dark to dark)...

 

If this problems occurs in built game . Then change graphics setting to legacy vertex lit .it worked for me.

 

This works. OMG this is such a weird bug.

 

a bit late, for me it worked by ticking and un-ticking Auto Generate from the Lighting window, and cancel generating lightmaps.

 

I've been having this problem as well in Unity 2020.3.8f1, however I've also managed to get this issue on mobile build.
My situation is a bit different, since I am actually using no pre-baked lighting or light probes at all. My project is based on Google's Maps for Unity package, so prebaked lighting is completely irrelevant for me.

My setup is first loading in a bootstrap scene without camera or lights and then additively loading in the main game scene. Both scenes share the same Light Settings asset with all settings disabled.
Interestingly, if I build my project with the bootstrap scene open in editor, I get the faulty dark lighting, but when I build with the main game scene open the resulting lighting in the build is correct.

 

I've just updated to the latest LTS - 2020.3.18f1 and the issue is still there. Changing Rendering options to 0 or changing the default skybox to none helps, it does require to readjust light settings, which can be a bit of an extra work across multiple games.

Any ideas if this going to be fixed in 2020.3 LTS?

 

This works

 

Hello, I can confirm that this bug still persist in version Unity 2020.3.18f1. I have followed the Project Boost from Gamedev.tv and in the lecture "Respawn using SceneManager". After respawning of my rocket, the light intensity in the scene is much darker -> see the picture. The code was:

using UnityEngine;
using UnityEngine.SceneManagement;

public class CollisonHandler : MonoBehaviour
{
void OnCollisionEnter(Collision other)
{
switch (other.gameObject.tag)
{
case "Friendly":
Debug.Log("This thing is friendly");
break;
case "Finish":
Debug.Log("Congrats, yo, you finished");
break;
case "Fuel":
Debug.Log("You picked up fuel");
break;
default:
ReloadLevel();
break;
}
}

void ReloadLevel()
{
int currentSceneIndex = SceneManager.GetActiveScene().buildIndex;
SceneManager.LoadScene(currentSceneIndex);
}
}

Someone from Unity, can you confirm it is a bug? Thank you.

 

Hello, I can also confirm that this metod worked as a solution:

 

This works on me too, thanks a lot my friend

 

It works! Thank you!

 

Bumping because I encountered the same issue.
Using 2020.3.20f1.

 

This is not what I am experiencing, since I also see this in builds, and I'm not loading scenes additively.

 

This also works for me. They should include this fix in the Unity Tutorials (Junior Programmer) because that is where I first encountered the problem.

 

What setting is this?

I have this problem on Unity 2021.2 in two projects across different platforms - everything is fine in editor but builds are missing the environmental light totally. I can replicate the same (wrong) look in editor by setting environmental light to skybox and intensity 0 or color black.

No matter what I try (realtime, baked, auto-bake, bake manually, clear baked stuff, what ever) I can't seem to make it look like it should in any of my builds, it's driving me absolutely mad.

 

I switch Rendering>Lighting in section Environment: Environment Lighting Source: to Color. It works for me.

 

THANK YOU!!!

 

I'm using unity 2020.3.25f1 and had the same problem even on a real android device.
Finally, I figured out where the problem is.
The problem is that the directional light settings in your first scene are different from other scenes.
In my case, I had a Loader scene. I copied directional light settings from one of the other scenes to the Loader scene and that's it. my problem was gone.

 

Thanks for solving the issue for me unity_V8bZCn-egVGPYw !
This only happens if scenes don't have the same directional lightning object in scene. After I copied the same directional light to all scenes, there was no more problems!

 

...reading this entire thread about a simple task to load a next scene. wow. @kupikey - your solution is the one, and only one, which worked! Thank you

 

This was the winner for me. Thanks.

 

I had a similar problem, but the Rendering/Lighting Window is very deceptive about which Scene you're changing the settings on. I had a Main Start Up Scene that I was accidentally setting all the light options for. When I changed the active scene to a level scene, I lost my Skybox. If you're going to change Lighting Settings, make sure all other scenes are unloaded.

Ideally, the Rendering/Lighting Window would have a dropdown displaying the Scene you're changing the properties for.

 

Yep. This worked.

Here's a complete file (had to tweak the customReflection bit) for copy and pasting.

Code (CSharp):

1. using System.Collections;
2. using UnityEngine;
3. using UnityEngine.Rendering;
4.  
5. public class UpdateSky : MonoBehaviour
6. {
7.     ReflectionProbe baker;
8.  
9.     void Start()
10.     {
11.         baker = gameObject.AddComponent<ReflectionProbe>();
12.         baker.cullingMask = 0;
13.         baker.refreshMode = ReflectionProbeRefreshMode.ViaScripting;
14.         baker.mode = ReflectionProbeMode.Realtime;
15.         baker.timeSlicingMode = ReflectionProbeTimeSlicingMode.NoTimeSlicing;
16.  
17.         RenderSettings.defaultReflectionMode = DefaultReflectionMode.Custom;
18.         StartCoroutine(UpdateEnvironment());
19.     }
20.  
21.     IEnumerator UpdateEnvironment()
22.     {
23.         DynamicGI.UpdateEnvironment();
24.         baker.RenderProbe();
25.         yield return new WaitForEndOfFrame();
26.         RenderSettings.customReflection = baker.texture;
27.     }
28. }

 

This fixed it for me in 2021.3.11f1

I did not need my lighting in my menu scene so I deleted it(which was coming anyways).

If anyone else is experiencing this, using an async scene manager that is always loaded is a potential solution. You could probably run your lighting from there and just turn things on or off with a lightManager script. IF the bug is truly related to having a different type of lighting, this SHOULD fix it since the lighting would not be destroyed between scenes.

 

Hi,

I've tried your method since I had the same issue that in one scene the lighting was on and after switching from another scene to before OK scene, this scene appears darker, as if the lighting was set to off. But what I did was that in the first scene I set both your settings to 0 and save, and then I set both settings back to 1. The lighting in the second scene (which was switched from the first scene) appeared as it should - lighting is now back on. I'm using Unity 2022.2.1f1 Personal. I still think this is a bug who also appear in this recent version. Thank you.

 

Works, thank you!

 

Worked with additive scenes. Huge saver! Thanks!

 

I'm facing the same problem on 2022.3.10f1.

But my problem is even if I load Scene B from A and they have the same lighting settings, the environment light from Skybox is still been disabled. If it is caused by not baking light data, why the environment light is working when I directly launch Scene B?

I think it is a bug.

 

Excellent information, worthy of a bump. Generating lighting for all my additive scenes fixed the issue in 2022.3.13f1. I only have one directional light active amongst all the scenes.