Landscape grass type shadow seams

hi, when using landscape grass type on landscape i get this seams of shadow:

it seems that the seams +_0 occur at the landscape sections.
the light source is movable.
the light source is set to movable.

Hi BrownMind,

That is an artifact of using baked lighting with the landscape grass type. It’s a known issue that has been reported with UE-20029. The issue here is that instanced foliage will only use a single indirect lighting sample which causes the pattern to show.

I see you mention that you are using movable light, but the image does not indicate that. If you’re intention is to use a movable light, make sure to rebuild the scene and set any skylights to movable as well when you do this. This will wipe any static lighting information and remove the pattern.

If you intend to use any static/stationary lighting with the landscape grass and you use C++ source from GitHub you can integrate a fix that someone submitted here: https://github.com/EpicGames/UnrealEngine/pull/1798

This pull request has been submitted and is being reviewed for implementation into UE4, but it has not been finalized yet.

I hope this helps.

Tim

yes rebuilding the lighting fixed it, thank you !