No Lumen Indirect Light on Linux Package

Development Architectural and Design Visualization
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1

Hello, I’m having this problem where I’m making an Archviz project and packaging on Linux because I’m uploading it to a pixel streaming service and it’s the cheapest option, but the scene looks dark because of the lack of Indirect Light from the light sources I have in the scene. When packaging for Windows I tried uploading a test project and it looks perfect, so I’m not sure if it is because of the limitations of Linux with Lumen or I’m missing something. I’m using Unreal 5.4.4 with Lumen, I would really appreciate some help.

Here is an example, same settings and PostProcess on both projects:

Screenshot 2024-10-17 095126
Screenshot 2024-10-17 0951261469×693 66.9 KB

Here Linux Version
Screenshot 2024-10-17 141715
Screenshot 2024-10-17 1417151471×697 80.8 KB

Windows Version

2

Hi there!

Lumen should work properly with a Linux package. However an important step to note is setting your Linux Platform RHI to SM6.
SM5 is the default setting for packaging projects, and this can not properly make use of Lumen.
You can update this setting via Project Settings > Platforms > Linux > Targeted RHIs

Please let me know if this helps

3

THANK YOU so much!!! This solved the issue :sob: I was using the SM5 Default setting, so now with the SM6 it looks perfect!

4

Great news! You’re very welcome

Best of luck on your project!