How to turn off these blue polyline vertex arrows/markers

Rhino Rhino for Windows
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1

Hi everyone,

I’m having an issue in Rhino where blue triangular arrow/vertex markers are showing on some polylines, as shown in the attached screenshot.

They appear automatically when I open the file, even when no objects are selected. I don’t remember having these markers displayed previously.

So far I’ve tried:

  • Dir – not related to these markers
  • PointsOff / F11 – markers are still there
  • Checked PlugInManager – I don’t see any obvious third-party plug-in that could be causing it

My Rhino version is SR34.

image
image317×222 797 Bytes

2

Can you post a file with at least one of the objects that displays this?

3

Here is the file, I’m sending from my colleague device because this issue only happened on this device.
System Info:
Rhino 8 SR34 2026-8-11 (Rhino 8, 8.34.26223.11001, Git hash:master @ f416e902495235e4e4a45cfc29ff1320cc8c70d8)
License type: Evaluation, build 2026-08-11
License details: Cloud Zoo
Expires on: 2026-11-03

Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 16GB)
.NET 8.0.29

Computer platform: LAPTOP - Plugged in [100% battery remaining]

Hybrid graphics configuration.
Primary display: Intel(R) UHD Graphics (Intel) Memory: 1GB, Driver date: 5-19-2020 (M-D-Y).

Integrated graphics device with 3 adapter port(s)

  • Windows Main Display is laptop’s integrated screen or built-in port
    Primary OpenGL: NVIDIA GeForce RTX 3060 Laptop GPU (NVidia) Memory: 6GB, Driver date: 3-2-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 461.79

Integrated accelerated graphics device with 4 adapter port(s)

  • Secondary monitor is laptop’s integrated screen or built-in port
  • Secondary monitor attached to adapter port #1

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: Off
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

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

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 3-2-2021
Driver Version: 27.21.14.6179
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 6 GB

Rhino plugins that do not ship with Rhino
C:\Users\cheey\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\Bullant\26.5.21.8\bullant.rhp “bullant” 26.5.21.8

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.34.26223.11001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.34.26223.11001
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.34.26223.11001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.34.26223.11001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.34.26223.11001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.34.26223.11001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”

rhino_forum_file.3dm (4.4 MB)

4

Dunno, that file is pretty bizarre. There are 4 curves and one text in it. One curve is a rectangle that looks normal that has a linetype by layer. Then there are three lines grouped together that have a very thick linetype applied (SOLID 40 LINE) relative to their length (90 and 250):

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image346×621 586 Bytes

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image972×1381 63.1 KB

Plus there is a block of text which looks more or less normal. I don’t see any arrows…

The lineweight thickness may be a problem of how the linetypes are interpreted when importing a DWG/DXF file - no idea of the original scale of the thing.

5

Hi -

I can see 4 arrows on that rectangle in the thumbnail that is in the 3dm file when it got saved, but there are no arrows when the file opens here.

I’d at least try to disable that plug-in and restart Rhino.
-wim

6

Your drivers are ancient. I suggest you update them both.

7

We found out the solution, the Options > View > OpenGL > GPU Tessellation is turned off in the first place. After turned it on, it solves the problem.