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Splinemesh shadows are very different to static mesh shadows

I've noticed that the lighting and shadows of spline meshes seems to be significantly different to the an identical static mesh.

I made the sequence of Spline Meshes shown in the first picture, ran a full production lighting pass, then merged all the actors to the single static mesh shown in the second picture and relit.

Note how the shadows are significantly different. Both the splinemesh components and the static mesh have their Mobility set to Static.

Since both variations are immovable meshes, I would expect them both to appear identical. As it is, it seems that SplineMeshes are not really suitable for creating level terrain, and will need to be merged down to static meshes before shipping the level.

Sequence built from SplineMesh components

Merged Static Mesh

Product Version: UE 4.20
splinemeshes.jpg (109.8 kB)
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asked Sep 08 '18 at 12:22 PM in Rendering

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Nameless Voice
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avatar image Jeff A ♦♦ STAFF Sep 10 '18 at 01:29 PM


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avatar image Nameless Voice Sep 10 '18 at 08:30 PM

That was nine months ago. :)

My bad, I posted this in the wrong section. I had meant to put it into "Rendering", but I added the "bug" tag and it automatically switched the space to Bug Reports. I've moved it back now.

I may yet submit a bug, but I'm not actually sure if this is a bug yet, or if perhaps I've done something wrong in my setup.

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