Raytrace mapping

Anyone else having the issue seen below. First image is rendered view, second is from raytraced mode.
Rhino seems to adjust the material mapping to some default in raytraced which cannot be altered.

In this example I am using sub-object materials, but the problem occurs if not using sub-object.

System Info:

Rhino 6 SR12 2018-12-17 (Rhino 6, 6.12.18351.21491, Git hash:master @ fae245659fd30c6dad38c0c2b889629254cd7e73)
License type: Commercial, build 2018-12-17
License details: Cloud Zoo. In use by: Brian ()

Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Machine name: DESKTOP-LKF4LGC

Non-hybrid graphics.
Primary display and OpenGL: NVIDIA GeForce GTX 1080 (NVidia) Memory: 8GB, Driver date: 11-29-2018 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 417.22

Secondary graphics devices.
Intel® HD Graphics 530 (Intel) Memory: 1GB, Driver date: 11-11-2016 (M-D-Y).

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: 11-29-2018
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.12.18351.21491
C:\Program Files\Geometry Gym\Rhino3d\BullAnt.rhp “bullant”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Program Files\Rhino 6\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.12.18351.21491
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Users\brian\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\PanelingTools (6caed836-bc06-4ebc-b1fd-e10886a0dc94)\2018.4.13.574\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.12.18351.21491
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.12.18351.21491
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros 6\VRayForRhino.rhp “V-Ray for Rhino”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Common Files\McNeel\Rhinoceros\6.0\Plug-ins\SectionTools (fbdb1d7f-8cfb-42c1-9858-87cb6315932c)\2018.4.17.851\SectionTools.rhp “SectionTools”
C:\Program Files\Rhino 6\Plug-ins\NamedPositions.rhp “Named Position”

Hello - I cannot repeat that here so far - can you export that object and textures and post it or send to tech@mcneel.com?


Here you are.

material mapping play 2.3dm (638.5 KB)

Hello - thanks, I see the problem in this model…


Is it a model units/scale thing? Units inches. Box is 6’ x 20’ x 13’

Quick guess would be the multiple uv mappings are not beeing handled correctly. @pascal, can you log a YT item for me, please?




Thanks guys. YT item?


I think you will get good results when you remove the second mapping channel (the one for paint). When I do that both Rendered mode and Raytraced look similar in mapping.

The YT item means bug report. While it appears that for this model you can work around as I showed Raytraced naturally should do a better job when there are multiple channels available. I need to investigate that further, the bug report will help me remember to that (:

I see. Thanks Nathan.

RH-50090 is fixed in the latest Rhino 7 Service Release Candidate

Thanks, Brian!

Sorry it took such a long time to get to this. But it’s done now!