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Black dithering on LOD/Cull transitions.

I am having an odd effect when instanced foliage meshes are transitioning between LODs and also when the foliage come within cull distance and appear. It seems like the meshes are flicking black and then dithering into visibility. I've attached a gif for example:

alt text

Has anyone seen this happen?

All materials are set to not support LOD dithering, but I have tested it both ways and the effect is still there

Product Version: UE 4.14
Tags:
dithering_02.gif (3.4 MB)
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asked Jan 14 '17 at 02:14 AM in Rendering

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JeffVRP
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Turns out that when marking instanced foliage as occluders causes them to dither from black. I am still not sure of why this happens, but unchecking it fixed the problem.

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answered Jan 16 '17 at 09:14 PM

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JeffVRP
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avatar image Ed Burgess ♦♦ STAFF Mar 02 '17 at 09:36 PM

Hey we have this issue logged in our bug tracker here: https://issues.unrealengine.com/issue/UE-39884

We plan to have the fix for this integrated into our 4.15.1 hotfix. Please be sure to test this out when it gets released and make another post if you still are having issues.

Good day!

Ed

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