Bug URP additional lights limit not working in build, fine in editor.

My Unity setup:

• Unity 2021.3.11f1
• Universal RP 12.1.7
  
• Rendering path Deferred

I have lots of additional lights with no shadows that get enabled at night. This works fine in the editor but not in the build. In the build the lights are culled and flicker on / off like the pixel light limit is being ignored.

Also tried setting all the lights to important as a test and the same thing happens. Is this a bug or expected behavior?

See attached image for settings.

Any assistance much appreciated, thanks!

 

Hey, I'm not sure what causes this problem.

But if the build is using OpenGL (including es) graphics api, URP will force the rendering path to forward (in URP 12).

Is the build using OpenGL? (consider switching to Vulkan)

 

Thanks for reply - the build is use DirectX11, so unfortunately it cannot be the issue you mentioned.

 

Did find something interesting today - it's only spot lights that it's happening to, additional point lights are working just fine in the build.

 

This is not true actually - it is affecting all real-time lights. Depending which way you turn your head / camera lights turn on / off. No mater the settings same thing happens.

 

So I though with URP - Deferred rendering there was no light limit, am I missing something here?

Is it a bug, can anyone at Unity please comment?

// Wildstyle

 

Built and tested the same game / source code on a different computer system (similar spec.) over the weekend... it works just fine, no light flickering, well it's 95% gone... so now I'm really confused!

If I ever get to the bottom of it, will update this thread with more details.

// Wildstyle

 

Funny thing is that it works great sometimes and other times all the lights are flickering. I mean, how is that even possible? You would think it works or doesn't... not some weird combination of both.

I had one build where it was 95% perfect, then built again yesterday and it's a $hit-show! Nothing changed between those two builds that would have affected it.

Basically given up on it for now, but not happy (lost so much productivity time to this issue). Only hope is waiting for Forward+ to drop in XR and hope that the lighting works correctly at that time.

// Wildstyle

 

Hey man!
Did you resolve your issue?
I have the same case.

 

Thanks friend! You saved my project!
Default setting is Auto - that means DirectX11 - deferred lights don't work on build for Win,
And they work perfectly on Vulkan!

 

That sounds like a bug, maybe you can try upgrading URP (with backup) or send a bug report to Unity?