Each time I assign a material from my list, Rhino adds a material instance. My list is getting huge and no way to work efficiently as I can’t select objects per (one single) material anymore.
Even when I select all the objects that share a set of material instances, then assign just the original material again, then purge the file to get rid of the instances, nothing happens (0 materials purged). Damn this is annoying! Must be a bug…
Can you post the results of the Rhino command _SystemInfo?
Rhino 6 SR7 2018-7-29 (Rhino 6, 6.7.18210.11281, Git hash:master @ f815aae129dfe2008152736625ca2dbd0036b29a)
Licence type: Commercial, build 2018-07-29
License details: Cloud Zoo. In use by: Arman Fissette ()
Windows 10.0 SR0.0 or greater (Physical RAM: 64Gb)
Machine name: WORKSTATION-ARM
Quadro P5000/PCIe/SSE2 (OpenGL ver:4.6.0 NVIDIA 397.93)
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: 5-22-2018
Driver Version: 24.21.13.9793
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 16 GB
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.7.18210.11281
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Bongo 2.0 (64-bit)\Rhino6\Bongo.20.rhp “Bongo 2.0”
C:\Program Files\Rhino 6\Plug-ins\RPC.rhp “RPC”
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” 6.7.18210.11281
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.7.18210.11281
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.7.18210.11281
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\Bongo 2.0 (64-bit)\BongoUI.20.v60.rhp “BongoUI20v60”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
just matching material properties does not make a material instance however…
Does it still happen with third-party plug-ins disabled, at least V-Ray?
Tools > Options > Plug-ins, right-click on V-Ray and select Enable Load Protection. Then restart Rhino and see if the behavior persists. Probably need to set Rhino Render as current renderer, too.