Mesh looks glitchy in rendered viewport, why?

[Michael_Meyer]

Hi…,

I wonder why meshes look often glitchy in rendered viewport in Rhino 6 to Rhino 8. In Rhino 5 and in blender (gltf-exported) meshes look fine.

mesh_rendered_glitchy.3dm (1.1 MB)

Is something wrong with the vertex normals?

Thanks

Michael
www.flexiCAD.com

[pascal (Pascal Golay)]

Hi Michael - I don’t know… I see that, and the mesh seems fine. Rebuilding the normals changes but does not fix the display…

-Pascal

[Gijs (Gijs de Zwart)]

I do something similar in Blender, but way more subtle, when using AO:

@jeff can you chime in?

[pascal (Pascal Golay)]

I noticed V5 has the same slightly-visible edges.

-Pascal