I have created cube model in z-brush then I exported it to .obj format. Seems vertex count is the same as in 3ds max as in z-brush.

In all my viewports I see cube, but in perspective I see not a cube but some like "extra shadows" on the each side of cube, like cube has not plane sides.

When I render it it also has not plane sides and some ugly shadows. How can I fix it, maybe I should know some tricks about it.


1 Answer 1


Probably your problem is due to normals not being per-face but smoothed.

You can apply Smooth with AutoSmooth after import with 30 degrees threshold to your model or maybe use a better exchange format.

You can use 30 degrees in most cases for half-smoothed objects. If you need blockiness just decrease it. (Or if you need smoothness increase it)

  • \$\begingroup\$ yes seems like normal issues, but I should do if I don't want to use smoothing? ) \$\endgroup\$ Commented Feb 18, 2015 at 16:50
  • \$\begingroup\$ Smooth with autosmooth turned on and 0 threshold creates a completely blocky and rigid looking mesh(no smooth edges), so you can use it to remove smoothness as well. \$\endgroup\$
    – akaltar
    Commented Feb 18, 2015 at 16:54

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