Lighting Build Stuck at 0%

OoKushoO · April 2, 2018, 11:16am

Hi Guys,
I have created an environment which is consists of a very large amount of static meshs …when i try to build the light it gets stuck on 0 % for almost 3 hours …no errors or nothing it doesnt pass the 0 mark please help .
is there any settings or is there any way with which i can narrow done the problem.
i have also tried for another projects. and the lighting is working fine for those projects it just with this environment .
i have also deleted the saved and intermediate folders for the current project still nothing .

OoKushoO · April 3, 2018, 5:08am

Hi guys ,
I have resolved the issue …when i checked my swarm agent i found that it was stuck on skylight radiosity . And the solution i used is – i used Floor Template from engine content …and drag that in the map after that i changed the location of the floor such that it wasnt visible in the game , then i saved the project after that i opened my swarm agent and clear the cache from the swarms toolbar…then hit light build in the unreal . After that it started working .

V.Bouchard · April 13, 2018, 6:25pm

I got the same problem with the skylight radiosity in 4.19 I hope your solution will works!

anonymous_user_65495b79 · October 20, 2018, 12:17pm

WHAT URE DOING WITH SKYLIGHT RADIOSITY

MAX3D2 · February 14, 2019, 12:36pm

Is it wrong to use SkyLight Radiosity? It seems to be on by default.

anonymous_user_8c5db8111 · July 30, 2020, 8:20pm

Hi I am facing exactly the same problem. If you by chance read my reply please help.

V.Bouchard · July 31, 2020, 4:04pm

Hi husi_fps

About 2 years old but now i can certainly help with that,

So the lighting build time in a scene depend over how it is made and the settings apply to it.

The first thing you want to do is to place a lightmass importance volume that cover all the playable area space which will give to the engine the info that this area is more important than the other.
You want to look what is your “world settings” the “lightmass settings” this is where everything is computed, depending on the scene that you work on those settings vary,
Build on preview mode or medium, it will give you a pretty good result and better build times.
Just build in production when your scene is completed and polish.
Also you want to look the lightmap density scene which can be found in the view mode → optimization viewmodes → lightmap density

You want to try to have a scene that have a pretty green coloring but again it depend based of the playable area where you want a good resolution of your lightmap vs a static meshes like a rock that you just scale big that you don’t want a too large resolution because it will affect your light build times in a strong way!

Post some screenshot of your setup if you want more help, lighting and the build times has many things that make it vary.

If you need help let me know!