Here is another really simple test - this one just has 1 single polygon in it so I don't think it can get any more simple than this.

I made a curved surface that looked like this:



But then meshed it with a really coarse angle setting to make just one polygon from it. But the vertex normals on the corners of that polygon will still be angled off to the sides (along the NURBS surface normals there) to give it the same kind of shading as the curved surface instead of it looking like a flat plane, here is what the mesh looks like when saving out from MoI:



Here is what it looks like when loaded into Cinema4D - note that even though it is a single flat polygon it has a kind of curved shading to it due to the vertex normals pointing off at angles:




The file is attached here as SingleCurvedPolygon.obj , can someone please load that into Octane and post what a rendering of it looks like? Does it look like a totally flat plane or does it have a gradient on it that looks similar to the original curved surface?

- Michael