Niagara translucent particles dont recieve shadows at a distance from the camera

When moving away from the camera, Niagara transparent particles seems to be not shaded, even though there is a shadow at that point in space.


There is a screenshot illustrating the problem. All of it trail in shadow of cloud. On all other object this shadow works normally.


And there is material blueprint I using for this particles.

How can I solve this problem? May be some engine rendering or material settings? Looking for this for several days with no result. Thanks for attention

Are you using the Translucency volume? If so, does changing the value r.TranslucencyLightingVolumeInnerDistance change the point at which it stops receiving shadows?

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No, I use “Volumetric NonDirectional” lighting mode.
It works. I set it to 1 500 000
But now i confused about what doing “r.TranslucencyLightingVolumeOuterDistance”?
Should I change it too?

Hey, sorry for the delay.

I think this is implying that you are using the translucency volume under the hood. This has two levels in the cascade and by making the inner value large, it just means it’s all using the first level which doesn’t seem to have any issues (which covers from 0 to the inner distance). Distances between the inner distance and outer distance use the second level of the cascade and it’s this one that seems to have a problem when building the translucency volume from shadow maps.

By just using the first cascade over quite a large distance, it means you’re using the volume at a lower resolution, although this might be fine for your application.