When using FilletSrf, the preview is extra coarse, as if there is no AA at all: [image] Different in Direct3D: no edges and isocurves, looks like rendered: [image] Please run SystemInfo command in Rhino and send us the results. :saluting_face: Rhino 9 SR0 2025-8-26 (Rhino WIP, 9.0.25238.1230…

I’m not seeing that here; the AA in OpenGL mode is good as far as I can see and I do see isocurves in Direct3D. → You may want to update your graphics driver it is ~7 months old ← Another thing that comes to mind is: have you started Rhino directly in Direct3D mode, or switched to it? It may be …

Today, I started seeing the preview without edges. I’ll investigate more and make a ticket.

[image] Menno Deij - van Rijswijk: have you started Rhino directly in Direct3D mode Sure! In the meantime I tried on a completely different PC (Intel graphics only). Same picture in OpenGL… Same picture in Direct3D… In Direct3D, when I uncheck Shadows in the Display panel, the isocurves a…

FilletSrf extra coarse display OpenGL vs. Direct3D

Serengeti (Rhino WIP)

brian (Brian Gillespie) September 24, 2025, 12:17am 5

RH-89391 is fixed in Rhino WIP

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FilletSrf extra coarse display OpenGL vs. Direct3D

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