Seeing backfaces through the object (again?)

This was happening awhile back, but I was under the impression it was fixed… I haven’t seen it in awhile anyway, but this file I got this morning exhibits the behavior…

(Shaded mode with backfaces set to red in this case)

Chapeau.3dm (404.4 KB)

Shaded ini:
Shaded.ini (11.9 KB)

Thanks, --Mitch

Hi @Helvetosaur,

I’m trying to reproduce this but I’m unable to. Could you paste me the exact Rhino version you’re using (from Help -> System Information...). The whole text output would be helpful.


Here ya go…

Rhino 6 SR11 2018-11-19 (Rhino 6, 6.11.18323.19181, Git hash:master @ 0200b43a48c2d93d905df89b7bd77bf8678fdd21)
Licence type: Not For Resale Lab, build 2018-11-19
License details: Cloud Zoo. In use by: Mitch Heynick (Team SwissRhino)

Windows 8.1 (Physical RAM: 32Gb)
Machine name: OCPC1

GeForce GTX 980 Ti/PCIe/SSE2 (OpenGL ver:4.6.0 NVIDIA 416.34)

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: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 10-10-2018
Driver Version:
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 6 GB

Rhino plugins
C:\Program Files\Rhino6\Plug-ins\Commands.rhp “Commands” 6.11.18323.19181
C:\Program Files\Rhino6\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino6\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino6\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.11.18323.19181
C:\Program Files\Rhino6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino6\Plug-ins\Alerter.rhp “Alerter”
C:\Program Files\Rhino6\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 6.11.18323.19181
C:\Program Files\Rhino6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.11.18323.19181
C:\Program Files\Rhino6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.11.18323.19181
C:\Program Files\Rhino6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino6\Plug-ins\Displacement.rhp “Displacement”

Thanks, I can reproduce it in your build but in our latest development version the bug has been fixed. I’ll try to make sure the fix ends up in SR11.


Cool, thanks David! --Mitch