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I'm making a mountain model (in cycles render), but for some reason when I get close to the mountain the shading looks boxy instead of smooth.

enter image description here

I have smooth shading on, and I put a subdivision surface modifier on, but it still looks boxy when I get close up. How to fix this?

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  • $\begingroup$ how close is your camera going to be? Real rocks are not all rounded and smooth - having a few sharp edges may actually make it look better. (But if the screenshot is showing your entire camera angle, then you would want to add more detail to it). $\endgroup$ – X-27 wants to Reinstate Monica Apr 29 '18 at 2:07
  • $\begingroup$ As a first step, view and check the consistency of the normals in your geometry - eliminate any flipped faces (edit faces > Ctrl-N) - look out for duplicated faces,vertices .. $\endgroup$ – Robin Betts Apr 29 '18 at 7:51
  • $\begingroup$ Thanks for that link, at least now I know what it's called, it's called the "terminator problem." But I still don't know how to fix it. And adding more vertices simply makes the shadows look like a bunch of smaller squares. $\endgroup$ – Ariel Stacy Apr 30 '18 at 0:50