Using Direct3D Rhino WIP, 9.0.25252.12305 Curves become visibly faceted when selected. Non-selected curves remain visibly smooth. Curves revert to visibly smooth when no longer selected. Sel;ected curves remain visibly smooth using OpenGL. The curves in this example are single span, degree 3 non-…

[image] Coarse wire display when not selected Serengeti (Rhino WIP) I extracted the boundary of the longer surface and rebuilt the two long bottom edges with 16 points, what rebuild suggested and used sweep2 to make a new tunnel. Looks better. Guess this is not…

Coarse wire display when not selected I extracted the boundary of the longer surface and rebuilt the two long bottom edges with 16 points, what rebuild suggested and used sweep2 to make a new tunnel. Looks better. Guess this is not about the surface so I deleted the surface and kept just two cur…

Thanks; I’m experimenting with some optimizations for curve drawing under Direct3D and it looks like we are seeing some cases where the optimization is a bit too aggressive.

I would like the display fidelity to independent of whether the object is selected or not.

Of course; the goal is to not display kinks under any condition

[image] Steve Baer: the goal is to not display kinks under any condition . this one was set to future 2 years ago [image] [image] Parabola / Curve Display issue Rhino when i create a Parabola, the displayed curve exhibits a polyline like appearance m…

I was actually just thinking about that one and may be able to apply one of the techniques I’m experimenting with in Direct3D over in Metal to make that issue work.

Direct3D - Curve becomes faceted when selected

Serengeti (Rhino BETA)

davidcockey (David Cockey) September 14, 2025, 3:55pm 3

This is different than my report but probably related. What I am seeing is based on whether the curve is selected or not.

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Direct3D - Curve becomes faceted when selected

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