V8 material list updating again and again

Hi McNeel
I’m seeing the material list in the material tab updating/re-creating all the thumbnails when “re-activating” it (eg. coming back from another tab), even though no changes has been made to any of the materials. I can’t quite spot the pattern (if there is one). It seems fairly random to me, but there might be a pattern. This is in tree view - after a few minutes of testing, it seems that grid and list view is OK. In scenes with many/complicated materials it takes far too long :grimacing:
-Jakob

SystemInfo

Rhino 8 SR5 2024-2-16 (Rhino 8, 8.5.24047.13001, Git hash:master @ 87905d1371b0ad4e8a0bde67d968d309ed579093)
License type: Evaluation, build 2024-02-16
License details: Cloud Zoo
Expires on: 2024-03-07

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 95GB)
.NET 7.0.0

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA Quadro RTX 4000 (NVidia) Memory: 8GB, Driver date: 10-18-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 537.70
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port 0
- Secondary monitor attached to adapter port 1

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
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: 10-18-2023
Driver Version: 31.0.15.3770
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\MeshTools.rhp “MeshTools”
C:\Program Files\Rhino 8\Plug-ins\Grasshopper\GrasshopperPlugin.rhp “Grasshopper” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCode\RhinoCodePlugin.rhp “RhinoCodePlugin” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.5.24047.13001
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”
C:\Users\jn\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\PanelingTools\2021.3.2.446\PanelingTools.rhp “PanelingTools”

Yup, @maxsoder is aware of this (we actually just now talked about it in our local developer meeting). I’m sure he can link the correct YouTrack issue for it when he notices this topic.

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Yes, it is logged as RH-74642 Tree view thumbnails refresh each time this mode is chosen despite no changes

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