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Stationary Lights not reaching the Overllap Limit, but Red Cross sign appearing

Hi, we've been receiving the Red Cross sign indicating that more than 4 stationary lights are overlapping, although, there is only 2 of them, or setup looks like this:

  • A Stationary Directional Light: the sun

  • Stationary Torchs: those are used sporadically with a very limited range, since we got a plenty of light from the sun already.

So, i'm guessing that we get a max of 2 stationary lights overlapping only, but all of ours directional lights becomes red-crossed after restarting the editor.

So my question is: it is normal to have red-crossed stationary signs even when the limit of 4 stationary overlapping is not reach?

I'm attaching two images from a same spot, one of with the "Stationary Light Overlap" optimization view mode enabled:

alt text alt text

Thanks in advance.

Product Version: UE 4.15
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asked Mar 28 '17 at 12:55 AM in Using UE4

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avatar image Animaxe Apr 08 '17 at 06:59 PM

Bump. Any help would be great, thanks.

avatar image Animaxe Apr 24 '17 at 09:44 AM

Sorry for bumping it again, i really could use some help here, thanks in advance.

avatar image Animaxe May 24 '17 at 09:11 PM

Bump once more.

avatar image Animaxe Sep 28 '17 at 11:05 PM

Besides the fact the preview seems to be not always correct, everything is working fine, i can see the performance gain after light builds.

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1 answer: sort voted first

I ran into what sounds like the same problem today. In my case it had to do with Blueprint hierarchy. The stationary light (a spotlight) was linked under a theoretically moveable actor (in this case, a point light which I didn't intend to move, but apparently it fits the bill). By using "cut" to remove the spotlight from its linked position under the point light (for some reason you can't drag and drop), then selecting the topmost master node and pasting it back in, it re-appeared linked directly to the master and began to work.

Hope that helps.

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answered Jun 12 '17 at 08:15 PM

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avatar image Blacklake Jun 12 '17 at 08:18 PM

To clarify, this BP structure didn't work::


_Pointlight (static)

__Spotlight (stationary)

This one did:


_Pointlight (Static)

_Spotlight (Stationary)

avatar image Animaxe Jul 10 '17 at 08:56 PM

Thanks for your reply. I've thought this could cause problems before, so all lights are manually placed on the world directly (not inside any blueprints).

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