Display and render preview issues

[brvdln (Brv)]

@Rhino_Bulgaria Have you also noticed that the viewport/display looks strange after the latest Rhino WIP?
@Gijs

Before it looked like this with Car Paint 6.

[Gijs (Gijs de Zwart)]

@brvdln what is the lighting mode set to in that display mode? I think I noticed something similar yesterday where changing the lighting mode to ambient occlusion fixed it.

[Gijs (Gijs de Zwart)]

I am not seeing the render preview issues here though. Can you run _reset and hit the “Save settings for support” and send the resulting file in a pm?

[brvdln (Brv)]

With ambient occlusion it seems to have improved, although the on-screen display is not the same.

How it looked before on screen.

This was the display mode @Rhino_Bulgaria

Car paint 6.ini (13.4 KB)

@Gijs
RhinoSettingsForSupport_car paint6.zip (5.3 MB)

file:
zeppa.3dm (16.3 MB)

[Rhino_Bulgaria (Bobi)]

I use Rhino 7, but perhaps the issue that you have is caused by some changes in the latest Rhino 9 WIP. Bear in mind that some display modes with ambient occlusion and shadows look different depending on the “Use advanced GPU lighting” setting. Have you noticed any difference between these two states on your PC?

Originally, “Car paint 6” is supposed to use both “Scene occlusion” and “Advanced GPU lighting”.

[brvdln (Brv)]

Yes, actually that’s true. I’m using the same display mode both here on my work PC—where it appears on screen like in the example renders I posted above (the company PC is pretty poor)—and at home, where I have a high-performance custom-built PC with a latest-generation monitor, and the visualization changes.

That said, regardless of that, I’ve noticed that I can’t get the same visualization on my usual work PC as before (as you can see in the renders I posted).

[Rhino_Bulgaria (Bobi)]

Have you checked whether Rhino uses some custom light in the scene? It may be hidden. Check the “Lights” tab in the “Properties” panel. Also, check the “Sun” tab, as well.

In my Rhino 7 I use the following setting:

[Gijs (Gijs de Zwart)]

I imported your settings (I only had to reassign the emap) but then all seems pretty much as what you had. I might be on a slightly different version, so I need to check that next

[Rhino_Bulgaria (Bobi)]

Here is a downloading link for the unaltered “Car paint 6” display mode:

Share your custom viewport modes here

For those of you who want to use a shaded display mode with gentle shadows and highlights: Gentle shaded.rar (274.8 KB) [Gentle shaded] I also made 4 new car paint display modes. The last two ones, “Car paint 7” and “Car paint 8”, are especially good for general modeling of objects with vertical walls and simple items due to the extended highlight that covers both, the upper and lower areas of the geometry. Their materials resemble shiny and matte bronze paint. On the other hand, “Car pai…

[brvdln (Brv)]

I found it — the default lighting was how I used to see it before.

[Rhino_Bulgaria (Bobi)]

There was some noticeable flashing at the 32nd second of your first video in the last post. Reminds me of how Rhino 8 flashes on my PC when I switch to any display mode that uses ambient occlusion.

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Another bug related to both Rhino 7 and Rhino 8 (perhaps also found in the latest Rhino 9 WIP) is that the preview while using tools such like “Blend surface”, “Blend curve” etc will not show the blend surface’s wireframe and shade (it’s rendered as a blank white object) and blend curve’s wire (fully invisible). This only happens during the preview. Once the blend surface or blend curve is created, they are rendered normally again.

Critical graphics bug in Rhino 7: Inability to see blend curves

There is a critical graphics bug in both Rhino 7 and Rhino 8, which makes it impossible to do NURBS surfacing in certain display models. This is unacceptable, because it’s related to inability to see blend curves during their creation and adjustment of the handles. The user is literally left forced to switch to some other display mode that does not use shading. The bug is caused by the Ground plane. You can test how it behaves differently with the following display modes and the attached file w…

[Gijs (Gijs de Zwart)]

ok, so part one is solved. But your render previews are still broken.
can you go to Options > Rhino Render and make a screenshot of that page?

[Gijs (Gijs de Zwart)]

@brvdln what I mean is this page:

[Gijs (Gijs de Zwart)]

@Rhino_Bulgaria

preview while using tools such like “Blend surface”, “Blend curve” etc will not show the blend surface’s wireframe and shade

In current WIP preview shading is using the display mode, at least much more closely.
I couldn’t reproduce the curve display issue in Rhino 8 or latest WIP (the issue you linked to is obsolete)

[Gijs (Gijs de Zwart)]

@Gijs

what I mean is this page

additionally, pls run _SystemInfo and post back the results

[brvdln (Brv)]

Rhino 9 SR0 2026-4-7 (Rhino WIP, 9.0.26097.12305, Git hash:master @ b60dd410008243ac590db0c97997566b52def575)
License type: Commercial, build 2026-04-07
License details: Cloud Zoo
Expires on: 2026-05-22

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 32GB)
.NET 9.0.1

Computer platform: DESKTOP

Standard graphics configuration using DirectX
Primary display: NVIDIA GeForce GTX 1050 Ti (NVidia) Memory: 4GB, Driver date: 9-26-2024 (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 0.3.30 DYNAMIC_ARCH NO_AFFINITY Haswell MAX_THREADS=64.

Rhino plugins that do not ship with Rhino
C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\6.1.1.119\XNurbsRhino7.rhp “XNurbs”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26097.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 9 WIP\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.26097.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.26097.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.26097.12305
C:\Users\Daniil.PC-DANIIL\AppData\Roaming\McNeel\Rhinoceros\packages\9.0\PanelingTools\2024.8.20.677\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26097.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26097.12305
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”

[Gijs (Gijs de Zwart)]

@brvdln

Driver date: 9-26-2024

this is only thing that pops out. Are there updated drivers available for your display card?

[brvdln (Brv)]

I’m seeing that apparently Windows 10 PCs will no longer receive updates after October 14, 2025. I tried updating the drivers manually, but no updates are available anymore. What they recommend is upgrading to Windows 11, but the PC I currently use for work isn’t compatible with Windows 11, so basically I would need to replace it.

[Gijs (Gijs de Zwart)]

Do you recall if the rendering issue has started with the latest WIP builds?