Odd shadows being cast

Question

I've got a fairly simple shape, and when I render it in cycles I notice some odd shadows being cast across part of the faces.

Model with shadows

Here are some images of my wireframe - what could be causing the green-encircled shadows?

Front wireframe

Side wireframe

Off-rear wireframe

Possible duplicate of How to flatten a non-planar face to a targeted plane? — yann, Oct 02 '17 at 13:23
you are most likely dealing with non-planar faces. Your topology looks really clean and nice, but the weirdly shaded faces might be non-planar, so the triangulation made by the renderer becomes visible. Take a look at the link above, that should fix your shading issues. — yann, Oct 02 '17 at 13:26
@yann https://blender.meta.stackexchange.com/questions/549/duplicate-answer-vs-duplicate-question — Ray Mairlot, Oct 02 '17 at 14:39
@yann I've made the faces planar but that doesn't fix the issue. — James Monger, Oct 08 '17 at 11:32
@jamesmonger please upload your file. https://blend-exchange.giantcowfilms.com/ — yann, Oct 08 '17 at 11:34

score 1 · Answer 1 · answered Oct 05 '17 at 22:25

1

Do you have smooth shading active? If that's the problem, try marking some edges as sharp, use the "Auto Smooth"-option in the object data panel or split some edges.

answered Oct 05 '17 at 22:25

ahg95

41
3

I'm not using smooth shading – James Monger Oct 06 '17 at 08:00

Odd shadows being cast

1 Answers1