Unity 5 - Directional Light and Culling Mask Problem

I have a background scene. And my game should run in front of this background scene. The background scene has a day night cycle. So i need a independand lighting for my game so that i can play the game in the night time cycle too.

I use two cameras to display the content. The objects are in corresponding layers. gamecontent and levelcontent. The directional light for the level content has the layer gamecontent turned off in the culling mask. The directional light for the game has the layer levelcontent turned off in the culling mask.

So the game light should not affect the background scene. And the level light should not affect the game in the foreground.

But they do :/

The light from the game lights the background scene, and the light from the background scene influences the game. Not so strong as if the culling masks would be ticked, but very visibly.

Scene shows the background with game light on and off. It's quite a difference.

Is this a bug? Or is there a trick to light my content really independant?

 

One step further. It seems that this is caused by GI Intensity and Bounce Intensity of the light. Smells more and more like a bug ...

 

Bump

Can somebody confirm this behaviour please?

 

http://issuetracker.unity3d.com/issues/cullingmask-lightmapping-ignores-lights-culling-mask

It's a bug. Indirect lighting does not seem to take culling masks into account.

 

Thanks for confirming. I have also submitted this as a bug before a few days.

http://fogbugz.unity3d.com/default.asp?694384_159lfichioa59f3d

 

I also have the same issue.

 

This issue is listed as fixed in Unity 5.1. So when you have still issues with it in 5.1, then you should submit a new bug report.

 

It isn't fixed in 5.1 apparently..

 

Nor in 5.2...

 

not fixed in 5.3 release version either

 

Wow, this bug is still not fixed?
How do you bake your scenes? Is there any workaround?

 

I tried to make that same setup work, ended up having the background directional light as a realtime light, not baking it, remember to turn OFF the light before baking, or else there is a good chance unity will bake it. So we have a custom bake button, that turns off all realtime lights on bake.

 

I just came across this and it's still not fixed in 5.4. I have a pitch, players and stadium. Using precomputed GI. Separate directional light for the players and stadium. The directional light set with a culling mask of "Players" still affects the Global Illumination by the looks of it. I just want it to light the players. The stadium light has the culling mask set to everything but the players layer, so it must be the global illumination is still using it. How do I exclude the player light from the global illumination?

 

Ahh. I just figured that it must be bouncing. So I dropped the Bounce Intensity on the player directional light and that fixed it.

 

Well, I just got into this problem. I'm using a layer to put my gizmos and that layer have a directional light (which should only affect the gizmos.. but isn't working correct, some of the light goes into my main scene).

Thanks alternative_richie for the tip, that bounce intensity is a "good workaround" in my case.
I just write to bump the thing up.... the first post is from 2010 :/

Unity version: 5.5.1f1

 

Same issue in 5.6.0 f3...

 

Got into the same issue. Hope one day somebody from Unity will notice this topic.

 

Same issue 5.5.3f1. My scene lighting looks totally different after building my project.

 

Same on Unity 2017.1.0f3

 

Same on Unity 2017.2.0.f3

 

Same issue 5.6.1f1. How can i workaround?

 

Can confirm, still has the issue

 

it's still a bug in 2018.2

 

Bumping this because it is still there in 2018.3
Just 2 more years until this becomes a decade old bug!

Can someone share a workaround?

 

I confirm: 2018.3 still a bug ...

 

How can a decade old bug not be prioritized more than more recent bugs? How can it be that this bug still exists after being in Beast, then in Enlighten and now in your own cpu and gpu lightmappers? Being done from scratch, this is not a bug but being ignored
I hate writting just to ask "why is this bug here" but lately I find so many bugs and Unity crashes so much on me that makes me feel bad for liking this engine so much.
A bug fix must have higher priority than a new feature because bugs make current features unusable and new features aren't complete or stable, leaving overall something incomplete and unstable. That's why most of the time fixing is better than adding, it's better to have something that works that many things that don't.
I know, making new things is fun... but fixing bugs should come first.

 

In my case it is a point light ignoring what is set in cullling mask and applying light to an item with a layer which should be ignored. I use 2018.3

 

Yes, and not a normal bug but a very important one

 

Just ran into this in 2018.3 and it makes me sad....

 

In my case using Forward rendering solved the issue

 

This problem is still present in 2020.1. I can't stop a direct light from baking in my floor. Any work around after 5 years of waiting?

 

Any update on this? How is this still a big 5 years later?

 

Same on Unity 2020.3.0f1

wtf?

 

Still here on 2020.3.15 LTS

 

Haven't check, but the URP roadmap says they added the possibility of puting layer masks to lights.

 

Still an issue in Unity 2021.2.2f1

 

this is still a issue, i think it is right to say that unity team is not capable enough to fix this bugs

 

use light layers.
https://docs.unity3d.com/Packages/c...versal@12.0/manual/lighting/light-layers.html