Materials panel thumbnails missing

Materials panel thumbnails are missing after adding more than one material.

Rhino is started using the Small Objects - Millimeters.3dm template.
The Materials panel is empty.
I click the + icon to add 5 materials in one go.

The materials are added to the panel.
Most thumbnails are missing.


Rhino 9 SR0 2025-8-19 (Rhino WIP, 9.0.25231.12305, Git hash:master @ dfd2d69cd1260344b9024b898855baf5ca9da47d)
License type: Commercial, build 2025-08-19
License details: Cloud Zoo
Expires on: 2025-10-03

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 32GB)
.NET Framework 4.8.9310.0

Computer platform: DESKTOP

Standard graphics configuration using DirectX
Primary display: NVIDIA GeForce RTX 2070 (NVidia) Memory: 8GB, Driver date: 1-26-2025 (M-D-Y). DirectX(11)
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port 0

Secondary graphics devices.
None found.

DirectX Settings
Safe mode: Off

OpenBLAS: OpenBLAS 0.3.29 DYNAMIC_ARCH NO_AFFINITY Zen MAX_THREADS=64.

Rhino plugins that do not ship with Rhino
C:\Program Files\SimLab\Plugins\SimLab 3D PDF From Rhino 6\plugins\SimLabPDFExporter.rhp “SimLab PDF Exporter”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 9.0.25231.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”

Thanks for reporting, I’m seeing this as well. I have logged this issue to our development engineers.

RH-88930 Materials panel thumbnails missing

Does it work in OpenGL instead of Direct3D?

Tools → Options → View → GPU → GPU Technology → OpenGL/Direct3D

It does.
Didn’t have the idea it could make a difference.

1 Like

RH-88930 is fixed in Rhino WIP

1 Like