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Shadow bug (weird lines)

On every level I create, I'v got this weird shadow bug, and I can't fix this. I even didn't edit any shadows settings or something. But in model viewer (when I open my model via Content Browser) the model is perfectly normal and doesn't have this bug.alt text

alt text

Product Version: UE 4.20
32132131.png (1.7 MB)
312321.png (939.5 kB)
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asked Oct 12 '18 at 11:46 AM in Rendering

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To me it looks like Z fighting... are you sure you don't have duplicated faces? ...or the whole mesh?

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answered Oct 12 '18 at 02:23 PM

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avatar image III_OrilaS_III Oct 12 '18 at 10:05 PM

No, it's just only one mesh, even landscape have this bug

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Good old shadow bias artifacts? Most of time countered with a good normal map or if you prefer polygon look - tweak the shadow bias option in you directional light

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if it's lower then 0.5 you get those banding artifacts, if it's higher that 1.0 you get a floating shadow bug. Try to fiddle with it to get the results you need.

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answered Oct 13 '18 at 02:25 AM

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Felix Leonhart
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avatar image III_OrilaS_III Oct 13 '18 at 10:04 AM

No, it doesn't helped. Even without any lighting the bug is still visible. I think it's probably Z fighting, but I don't know how to fix it.

avatar image III_OrilaS_III Oct 13 '18 at 10:29 AM

Also I noticed that this is happening when I get too far from center of the world

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