Rhino 8 Linetypes Issue

Rhino Rhino for Windows
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1

In one of my recent large Rhino 8 sessions I’ve noticed a weird behavior with the linetypes not rendering correctly. This session is 1336mb, uses my usual mm template, and has hundreds of layers:

4722_V10_11A
4722_V10_11A1920×1080 182 KB

I’m drawing a spacer on the construction plane and it’s roughly 2 meters away from W 0,0,0:

4722_V10_17A
4722_V10_17A1920×1080 413 KB

I noticed that the Hidden linetype is behaving weirdly. In Perspective mode, with all the loudspeaker surfaces visible, the Hidden linetype does not render correctly in the viewport if I zoom in close. Another data point: the little preview window in ViewCaptureToFile shows the Hidden linetype as rendering correctly, as does the thumbnail in Named Views:

4722_V10_14A
4722_V10_14A1920×1080 368 KB

On the other hand, if I Hide all the loudspeaker geometry, now the Hidden linetype renders correctly in the Viewport in Perspective mode whether I’m super close or very far:

4722_V10_15A
4722_V10_15A1920×1080 364 KB

4722_V10_16A
4722_V10_16A1920×1080 262 KB

As soon as I Unhide the loudspeaker geometry then the issue instant reappears:

4722_V10_18A
4722_V10_18A1920×1080 276 KB

If I change viewport to Top view instead of Perspective, then Hidden linetype always renders correctly no matter the zoom level. Also if I copy this curve with Hidden linetype and paste it into a new session with the same mm template, then it renders correctly in Perspective mode also no matter the zoom level.

2

Hi Derek,

Graphics configuration can affect this. Please run the systeminfo command in Rhino and post the results. Thanks

Are you able to share a file and steps to repeat?

3

Here is my system info:

Rhino 8 SR28 2026-2-10 (Rhino 8, 8.28.26041.11001, Git hash:master @ b7874a05a6982d0419fcc4f6009b510b48a09cb3)
License type: Commercial, build 2026-02-10
License details: Cloud Zoo

Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 64GB)
.NET 8.0.14

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 4080 SUPER (NVidia) Memory: 16GB, Driver date: 2-27-2026 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 595.71
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

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

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 2-27-2026
Driver Version: 32.0.15.9571
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 16376 MB

Rhino plugins that do not ship with Rhino
C:\\Users\\dchem\\AppData\\Roaming\\McNeel\\Rhinoceros\\8.0\\Plug-ins\\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\\7.0.0.9\\XNurbsRhino8.rhp	“XNurbs”	
C:\\Users\\dchem\\AppData\\Roaming\\McNeel\\Rhinoceros\\packages\\8.0\\PangolinMesh\\0.2.0\\PangolinMesh.10.Release6.rhp	“PangolinMesh”	
C:\\ProgramData\\McNeel\\Rhinoceros\\8.0\\Plug-ins\\Datasmith Rhino Exporter (d1fdc795-b334-4933-b680-088119cdc6bb)\\DatasmithRhino8.rhp	“Datasmith Exporter”	5.6.0.0

Rhino plugins that ship with Rhino
C:\\Program Files\\Rhino 8\\Plug-ins\\Commands.rhp	“Commands”	8.28.26041.11001
C:\\Program Files\\Rhino 8\\Plug-ins\\WebBrowser.rhp	“WebBrowser”	
C:\\Program Files\\Rhino 8\\Plug-ins\\rdk.rhp	“Renderer Development Kit”	
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoScript.rhp	“RhinoScript”	
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoBonusTools.rhp	“Rhino Bonus Tools”	
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoLabsTools.rhp	“Rhino Labs Tools”	
C:\\Program Files\\Rhino 8\\Plug-ins\\export_STL.rhp	“STL Export”	
C:\\Program Files\\Rhino 8\\Plug-ins\\AnimationTools.rhp	“AnimationTools”	
C:\\Program Files\\Rhino 8\\Plug-ins\\IdleProcessor.rhp	“IdleProcessor”	
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoRenderCycles.rhp	“Rhino Render”	8.28.26041.11001
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoRender.rhp	“Legacy Rhino Render”	
C:\\Program Files\\Rhino 8\\Plug-ins\\rdk_etoui.rhp	“RDK_EtoUI”	8.28.26041.11001
C:\\Program Files\\Rhino 8\\Plug-ins\\NamedSnapshots.rhp	“Snapshots”	
C:\\Program Files\\Rhino 8\\Plug-ins\\MeshCommands.rhp	“MeshCommands”	8.28.26041.11001
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoCycles.rhp	“RhinoCycles”	8.28.26041.11001
C:\\Program Files\\Rhino 8\\Plug-ins\\SectionTools.rhp	“SectionTools”	
C:\\Program Files\\Rhino 8\\Plug-ins\\Toolbars\\Toolbars.rhp	“Toolbars”	8.28.26041.11001
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\\Calc.rhp	“Calc”
4

I made a stripped down copy of that huge session and it still is exhibiting the weird issue with the Hidden linetype.

Steps to reproduce:

There are some lines visible on the SPACER layer.

In Perspective view, zoom a ways out and the blue Hidden linetype circle should have the proper dashed look.

As you zoom in closer to that blue circle, at some point the dashes will disappear and it will appear as a solid blue circle instead. Still zoomed closely in, notice that as you manually turntable the camera around it (using either the 3D mouse or the standard mouse camera controls), the dashes will glitch in and out of view.

If you then hide the Bass Cabinet Shell doing that instantly fixes the Hidden linetype issue.

Then in Top view, the Hidden linetype always works properly, with or without the Bass Cabinet Shell hidden.

JBL_4722-TEST_02.3dm (626.3 KB)

5

Perfect, I was able to repeat per your instructions. Thanks for reporting RH-93898 Rhino 8 linetype regen fails