When starting the new _Patch, the viewport background changes. See video: KillMe.3dm (755.6 KB)

Filed as RH-88378 Display: D3D: GroundPlane Briefly Red -wim

hey Charles, please post your systeminfo

I haven’t been able to repeat this so far. I may need to see what customizations you may have made to shaded mode.

Rhino 9 SR0 2025-7-6 (Rhino WIP, 9.0.25187.12305, Git hash:master @ 9eae546f8dc7e98bf72972be5bb534fb9398e66e) License type: Commercial, build 2025-07-06 License details: Cloud Zoo Expires on: 2025-08-20 Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 32GB) .NET Framework 4.8.9310.0 Com…

Perhaps this is related: [image] Direct3D and Groundplane Serengeti (Rhino WIP) Direct3D doesn’t work well with Groundplane. The shadows are missing. And the automatic height is not right. Display mode = Shaded. [image] [image]

Have you done any changes to Nvidia control panel? Wip9 does not like it with direct3d on i got all sorts of strange display anomalies happening it took the settings i had from Rhino 8 A restore to default values fixed it

It looks like Wim was able to repeat the bug. It doesn’t have anything to do with settings on the Nvidia control panel and is a general bug that would happen on any GPU

Direct3D background changes

Serengeti (Rhino WIP)

brian (Brian Gillespie) July 29, 2025, 10:21pm 10

RH-88378 is fixed in Rhino WIP

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Direct3D background changes

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