Methods of creating Clay Render with Rhino Render? Any hack?

Trying to find ways of working faster setting up a rendered scene and evaluating the scene with light before applying materials and just being able to do fast renderings

Anybody have any technique of temporarily change materials to one material in order to render a clay render for faster workflow?
Say if you have a architectural scene with a lot of materials that are applied to different objects with Assign to Object (because applying by layer would result in too many layers…)
Thought of making an duplicate of Rendered Display Mode but can’t find any options of choosing a different display mode in the render options. It is important that pixel count of the clay render (whatever method) is the same as the rendered setting.
I tried using RenderArctic but somehow it didn’t work on some objects - they still rendered with the applied material. Tried ungroup the faulty objects but it didn’t change.

A second question: How could I make use of the materialID and ObjectID? I tried saving out as a exr-file but my photoshop doesn’t let me work in 32-bit, I have to convert it to 16-bit which makes it look terrible and useless. Is there any other method of saving out these passes for further processing in Photoshop?

Make a copy of Arctic mode. Go to the general settings for this copy and under shading settings for Color and material choose Custom material for all objects. Then click the Customize… button. Scroll down to Environment and choose a map file. Select a matcap file that you like.

Then go to Other settings and for Realtime Renderer Assignment choose Cycles.

Make sure to give your new mode a useful name.

A comparison with Raytraced (which is the same as Rhino Render) and the Arctic-derived mode:

If you need to get a file rendered from this new mode you can use -_ViewCaptureToFile.

You may have objects that have their object display mode set, which then likely overrides the arctic part.

I made a video here https://www.youtube.com/watch?v=KIy5dlwjc08 . You could use this to convert to a number space that you can work with.

Not directly from Rhino. The above video should help you on your way.

Thanks for the clear explanation and tips! I tried using a matcap but not sure of a useless resolution of the jpeg. Not sure really what the difference between a matcap and a diffusemap.
Tried to find a useful matcap but didn’t find any so I don’t know if my experiment of the settings make my evaluation of the setting any useful judging by the result.

Matcaps are essentially sphere renders that have shading in them. When those are put in the environment slot (or with environment mapping if you put it in a regular material) those get evaluated with an environment mapping giving a nice effect.

You can search for instance for matcap white clay and you get multiple good looking images. I used matcap clay white at DuckDuckGo for a quick search and tried the first one at pmndrs market - , which looks like

With a couple of simple shapes

Also, any reason you are dropping the bounce counts? I would keep them at their defaults.

Downloading the jpeg gives me this:

I tried to change it for faster renders but not sure if it helped. Kind of hard to evaluate…

Please run the Rhino command _SystemInfo and post the result in a reply here.

Rhino 8 SR12 2024-10-8 (Rhino 8, 8.12.24282.07001, Git hash:master @ 2f42167325d83e0da0f3fe08e796c2b26e602bc5)
License type: Educational, build 2024-10-08
License details: Cloud Zoo

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 24GB)
.NET 7.0.20

Computer platform: LAPTOP - Plugged in [100% battery remaining]

Non-hybrid graphics configuration.
Primary display and OpenGL: NVIDIA Quadro P1000 (NVidia) Memory: 4GB, Driver date: 1-2-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 538.18
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
Primary OpenGL: NVIDIA Quadro P1000 (NVidia) Memory: 4GB, Driver date: 1-2-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 538.18
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port

Secondary graphics devices.
Microsoft Basic Display Adapter (Intel) Memory: 0MB, Driver date: 6-21-2006 (M-D-Y).
> Integrated graphics device with 1 adapter port(s)
- Secondary monitor is laptop’s integrated screen or built-in port

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 2x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 1-2-2024
Driver Version: 31.0.15.3818
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 4 GB

Rhino plugins that do not ship with Rhino
C:\Users\nilsw\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\NVIDIADenoiser\0.4.3\NVIDIADenoiser.Windows.rhp “NVIDIADenoiser.Windows” 0.4.3.0
C:\Users\nilsw\AppData\Roaming\McNeel\Rhinoceros\packages\8.0\SubstanceImporter\2.0.7\Substance.Win.rhp “SubstanceImporter” 2.0.7.0
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\V6\VRayForRhino.rhp “V-Ray for Rhino”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.12.24282.7001
C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 8\Plug-ins\AnimationTools.rhp “AnimationTools”
C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.12.24282.7001
C:\Program Files\Rhino 8\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.12.24282.7001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.12.24282.7001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.12.24282.7001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.12.24282.7001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”
C:\Program Files\Rhino 8\Plug-ins\NamedPositions.rhp “Named Position”

Is this also set as your current renderer? If so try changing it to Rhino Render and see if that works better.

Also update to Rhino 8.13, there were some fixes to the custom material.

Sorry no luck! I guess my computer is a little old and can’t keep up with the updates.
Thanks, learned some others things from your answers!