Le 2019-11-17 à 15:56, tmelram a écrit :
> Hi, I am using Blender to model and wanted to use POV ray to render my scenes.
> But, I'm getting serious shadow issues. There seem to be triangles near wherever
> there are shadows!
> 
> A picture of the problem:
> https://i.imgur.com/z6Ftxv6.png
> 
> How can I remedy this??
> 
> 
> 

This is a mesh sphere. The triangle are places where the triangles 
composing the sphere are actually pointing away from the light but their 
normals would demand that they be illuminated.

The usual solutions are :
Subdivide the mesh. (make the triangles smaller)
Use an area_light with the area_illumination feature. (make the 
terminator more fuzzy)
Rotate the object or change the location of the light. (shift the 
problem area out of view or shift the light so that it no longe cause 
the problem)

None of those are perfect. All often still show those triangles, but 
make them less visible or smaller. The last option listed can, in some 
cases, hide the problem area, but probably won't work in this case.

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