Screens shows lines not closed

my screen shows the lines are not closed after last update, when zooming in they are closed as should be

it is not in every file btw, the same part in another file shows up ok

Can you upload a .3dm file with an example of the problem? You can use the vertical arrow icon above where you type a post.

Hi Rob - a couple of things to look at -

  • In Options > View > openGL page, chenge the setting for ‘GPU tesselllation’. Does that make any difference?

  • Please run SystemInfo in Rhino and post the results here.

  • Do you see the correct curve if it is selected?


does not makes a difference it is only this file strange , so not that importand but …rhino problem.3dm (76.3 KB)
it only when zoomed out a bit when zooming in it is ok and weird the same object into another file is ok

Rhino 6 SR17 2019-7-8 (Rhino 6, 6.17.19189.16411, Git hash:master @ cf56edd2ae6f54f60e146e5c7b3fb2f75e4fe114)
License type: Commercial, build 2019-07-08
License details: Cloud Zoo. In use by: Rob Bulk ()

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: RBCHOOFD

Non-hybrid graphics.
Primary display and OpenGL: NVIDIA GeForce GTX 760 (192-bit) (NVidia) Memory: 2GB, Driver date: 1-23-2018 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 390.77

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 1-23-2018
Driver Version:
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 1536 MB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.17.19189.16411
C:\Program Files\Rhino 6\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 6\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Program Files\Rhino 6\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 6\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.17.19189.16411
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\Alerter.rhp “Alerter”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.17.19189.16411
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.17.19189.16411
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 6\Plug-ins\Calc.rhp “Calc”
C:\Program Files\Rhino 6\Plug-ins\NamedPositions.rhp “Named Position”

Hoi Rob,
I see this here with the file that you provided and filed report RH-53812 for the developer to take a look at.
I noticed that this curve is of degree 4 and that after simplifying, it displays correctly.
Thanks for reporting,

ok succes