Active geometry surfaces turn grey during viewport translation (V6 SR13)

OK someone tell me where to find the magic checkbox to fix this nonsense.

In the video below there’s a cube on a red layer. The viewport is set to Shaded. When I select the box, it shows the yellow edges (which is correct). But when I do any kind of viewport translation, such as orbiting as shown in the video, the box turns grey. If I deselect the box, it stays grey. If I the reselect, it turns back to red.

Why is the box turning grey!?

Note - this only happens to the selected object. Anything unselected remains the correct colour.

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


Rhino 6 SR13 2019-2-27 (Rhino 6, 6.13.19058.371, Git hash:master @ 17cd8b51accbe17dd04b48028f49d5e77a67f17b)
License type: Commercial, build 2019-02-27
License details: Stand-Alone

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: DESKTOP-DM86LID

Non-hybrid graphics.
Primary display and OpenGL: Parallels Display Adapter (WDDM) (Unknown) Memory: 8GB, Driver date: 3-12-2019 (M-D-Y). OpenGL Ver: 2.1 ATI-2.9.26

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

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

Vendor Name: Parallels and ATI Technologies Inc.
Render version: 2.1
Shading Language: 1.20
Driver Date: 6-28-2018
Driver Version: 24.20.11016.8001
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 32 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.13.19058.371
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” 6.13.19058.371
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” 6.13.19058.371
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.13.19058.371
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”

Hello - unfortunately, Parallels is not supported - precisely this sort of defect is all too likely via Parallels. Bootcamp will be a better bet.


I’ve used V5 with Parallels for years with no issue. Are you sure this is the cause of the problem?

Extremely likely. V6 is completely different from V5 in terms of how the display is handled.

Just a general comment for running Parallels - while still not supported, I’m told that you need to be running SR 14 or above to be able to see any text in a viewport.