Unreal engine 5 Lumen reflection problem

kapgowild · Jun 2021

Hi guys, so I was experimenting with lumen on a project that I was finishing in UE 4.26, but I'm having a few issues. My main problem is about the shaders, this wwater shader is not reflecting at all in UE5, the first picture is in UE4 and the second on UE5. The reflections in the glass are also looking odd.
Also I'm seeing lots of grainy shadows and some artifacts whilst using lumen, any ideas how to fix it? thanks
UE4:

Image: https://us.v-cdn.net/5021068/uploads/editor/dq/rzyhs6s84qca.jpg

UE5:

Image: https://us.v-cdn.net/5021068/uploads/editor/6g/vprbm911cg62.jpg

Mink · Sep 2021

If you are using WPO for your water shader your SOL, Lumen & Nanite do not support WPO yet.

I'm not seeing any artifacts outside of the water, what do you mean?

Unreal engine 5 Lumen reflection problem

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