Colored mesh doesn't cast shadows over itself - Rendering - McNeel

Well, title is quite specific. As you can see there are no shadows over the colored mesh (is coming from grasshopper, with colors related to its vertices). The render is with standard rhino render, sun and skylight ON.

Rhino 3D Blog: January 2007

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Just finished FF6 it was an emotional ride! I'd want 6 to get a remake after ff7r if i'm being honest. : r/FinalFantasy

Help] Static mesh doesn't cast shadows : r/unrealengine

Colored mesh doesn't cast shadows over itself - Rendering - McNeel

Rhino Hacks │ How To Make Sharp Shadows and Plain Colored

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Colored mesh doesn't cast shadows over itself - Rendering - McNeel

Solved: Mesh Light casts shadow problem - Autodesk Community - Maya