Hi, I noticed that the curve thickness in Wireframe mode thins when zooming in (images attached). Tried both Direct3D and OpenGL, updated Nvidia driver today and running the latest build of Rhino WIP, Rhino 9 SR0 2026-5-12 (Rhino WIP, 9.0.26132.12305. In this file, I have set the Curve Settings>Sc…

Hi Sach - [image] sach: I noticed that the curve thickness in Wireframe mode thins when zooming in (images attached). From those images, it would appear that they thicken when zooming in. At any rate, that’s not something I see on my end. Please run the Rhino SystemInfo command and copy-pa…

Rhino 9 SR0 2026-5-12 (Rhino WIP, 9.0.26132.12305, Git hash:master @ e4ca4a25a2667146cdb0b9e48607c637ec745bdb) License type: Commercial, build 2026-05-12 License details: Cloud Zoo Expires on: 2026-06-26 Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 32GB) .NET 10.0.8 Computer platfor…

Hi Sach - Grasping at straws, could you post a file in which you see this on your system and the custom display mode that you are using? -wim

curve thickness issue.3dm (3.7 MB) Thanks @wim

Hi Sach - [image] BUG: Sticky camera rotation in rendered mode I just restarted my machine and the NVidia card is recognised…So, now all is well Just to make sure, did that make a difference here as well? If not, please also post the custom display mode. -wim

Hi Wim, the Video card update did not resolve this. It happens in Wireframe mode. Not sure what you mean by custom display mode, but I have the curve settings scale set at 3.

Hi Sach - [image] sach: Not sure what you mean by custom display mode, but I have the curve settings scale set at 3. Is that the only difference that you made to the factory-default Wireframe display mode? To be sure, does anything change when you press the Restore Defaults button at the bot…

I think so and the background colour. I’ve restored to default and adjusted the curve scale back to 3. The problem persists in perspective view, although it seems okay in the elevation views..

Hi @wim Do you have any further information about this? I’m working on a cross-section measuring around 25sqmm in another file and it just goes to a thin line quite soon when zooming closer. I’ve checked the same file in Rhino 8 and the problem is not there. Curve width = 3: [image] Curve wid…

Also seems to depend on the camera angle to the object. Here, the curves become thin: [image] But, when you rotate the camera to get a more glancing view, it displays like this: [image]

BUG: Curve width scaling glitch

Serengeti (Rhino BETA)

wim (Wim Dekeyser) May 15, 2026, 8:17am 6

Hi Sach -

Just to make sure, did that make a difference here as well?
If not, please also post the custom display mode.
-wim

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BUG: Curve width scaling glitch

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