Why a scene render might have many very dark triangle artifacts?

Question

It was imported from obj and the scene has some environment light and a lot of sun light (the only way to make shadows more contrast I found).

.blend file: https://yadi.sk/d/UEUud0Y93HWBUH

Thank you!

Nils Eisen · Accepted Answer · 2017-05-01T03:33:58.667

1

In edit mode press A, so that the whole mesh is selected. Then press Ctrl+N (this fixes the normals of an object, normal essentially tell the render engine which way the face is facing). Then press W and select delete doubles.

edited May 01 '17 at 03:33

answered May 01 '17 at 02:52

Nils Eisen

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Thank you, works like magic! Could you please also specify name of an operation that is performed when you do Ctrl+N? – Ben Usman May 01 '17 at 03:31
wonder why this answer might not work here; it seems like they do very same things – Ben Usman May 01 '17 at 03:55
I'm sure though, I"m not the best with python – Nils Eisen May 01 '17 at 04:26
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@Ben Usman CTRL+N is the shortcut to (edit mode) mesh > normals > recalculate outside – m.ardito May 01 '17 at 07:32

Why a scene render might have many very dark triangle artifacts?

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