Skylight & Reflections

Development Rendering
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1

In this Documentation page, they say that you should avoid a shadow casting skybox:

Common errors preventing Lightmass indirect lighting from working after a build include a shadow casting skybox, lack of a LightmassImportanceVolume, missing or incorrectly setup lightmap UVs, or Force No Precomputed Lighting being set in the World Properties.

What does this mean? Is it not possible to have a sky light with shadows in a scene using reflections?

2

Hi Robert42 -

No, the Shadow Casting Skybox is referring to the object on which your sky material is placed, in default projects it is the BP_SkySphere. You can absolutely have Sky Lights cast shadows if needed or wanted.

Thank You

Eric Ketchum