Objects 'disappearing' when materials applied

Hey guys hoping you can help.
I’m working on a new computer and having trouble with objects ‘disappearing’. The object itself is still there however when I assign a semi transparent material to a part of the object my entire model seems to switch to 100% transparency.

This is an example of the object with shaded viewport.

I can’t quite put my finger on when it happens, it doesn’t seem consistent, but when I apply a semi transparent material to the large front window while in rendered viewport, it disappears, as does anything else visible in the model space. The object is visible in shaded viewport but not rendered.

It’s still there, but seems to be transparent.


As is anything else in the model.

I switched to pen mode and then back to rendered and it’s visible.

Now I’ve been able to change the material for the front panel to a transparent material and I can see the object in rendered mode.

AND I’ve got visibility of the whole model back.

But I know it’ll drop out again soon.
I can’t work out what’s going on, can you help please?


Hello - please run SystemInfo in Rhino and post the results.


Thanks Pascal, here’s the info…

Rhino 6 SR29 2020-8-25 (Rhino 6, 6.29.20238.11501, Git hash:master @ 06b936ae4e8c289ecccfd6b5ee9bacccc60eded1)
License type: Commercial, build 2020-08-25
License details: Stand-Alone

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: DESKTOP-FA01322

Non-hybrid graphics.
Primary display and OpenGL: Intel® UHD Graphics 630 (Intel) Memory: 1GB, Driver date: 3-8-2019 (M-D-Y). OpenGL Ver: 4.5.0 - Build

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

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

Vendor Name: Intel
Render version: 4.5
Shading Language: 4.50 - Build
Driver Date: 3-8-2019
Driver Version:
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 1 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.29.20238.11501
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\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” 6.29.20238.11501
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” 6.29.20238.11501
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.29.20238.11501
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”

It’s also starting to crash, I suspect the issue is related to the graphics card?

Hi Steve - I suspect you’re right - the driver is pretty old, as these things go, so I’d get the latest from the Intel website (don’t ask Windows to do it) and install that, and take it from there.