Disappearing geometry

Gijs · April 23, 2021, 7:15am

A student finds geometry sometimes disappearing. Both line work as well as shaded objects. I haven’t seen it myself because all lessons are currently online. Here is the system info. Is there anything that can be done about it on this type of laptop?

Rhino 7 SR4 2021-3-19 (Rhino 7, 7.4.21078.01002, Git hash:master @ a432d22ab7f0f7b53d157d578278070c8bf6eff4)
License type: Evaluation, build 2021-03-19
License details: Stand-Alone
Expires on: 2021-07-05

Apple Intel 64-bit macOS Version 10.15.7 (Build 19H15) (Physical RAM: 8Gb)
Mac Model Identifier: MacBookAir7,2
Language: en-GB (MacOS default)

Intel(R) HD Graphics 6000 (OpenGL ver:4.1 INTEL-14.7.8)

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: Intel Inc.
Render version: 4.1
Shading Language: 4.10
Maximum Texture size: 16384 x 16384
Z-Buffer depth: n/a
Maximum Viewport size: 16384 x 16384
Total Video Memory: 1536 MB
Graphics: Intel HD Graphics 6000
Displays: Color LCD (128dpi 1x)

Graphics processors
Intel HD Graphics 6000 (1536 MB)
Color LCD (1440 x 900)

USB devices
Apple Inc.: Bluetooth USB Host Controller

Bluetooth devices
None

Third party kernel extensions
None

Third party plugins
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftFoundation.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswiftCryptoTokenKit.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/log/liblog_network.dylib

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
/Applications/Rhino 7.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 7.4.21078.1002< /Applications/Rhino 7.app/Contents/PlugIns/AnimationTools.rhp “AnimationTools” 7.4.21078.100 /Applications/Rhino 7.app/Contents/PlugIns/Displacement.rhp “Displacement” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 7.4.21078.1 /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_OBJ.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_XAML.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/QuadRemesh.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_OBJ.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_SVG.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_DAE.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PDF.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_IGES.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_SVG.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/BlockEdit.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_AMF.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/import_DST.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PLY.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_AMF.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp /Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp br> 2
> 7.4.21078.1002
002
“Commands” 7.4.21078.1002
“Import_OBJ” 7.4.21078.1002
“export_xaml” 7.4.21078.1002
“QuadRemesh” 7.4.21078.1002
“export_OBJ” 7.4.21078.1002
“RDK_EtoUI” 7.4.21078.1002
“Export SVG” 7.4.21078.1002
“MeshCommands” 7.4.21078.1002
“Export_DAE” 7.4.21078.1002
“PDF Export” 7.4.21078.1002
“IGES Export Plug-in” 7.4.21078.1002
“Import_SVG” 7.4.21078.1002
“BlockEdit” 7.4.21078.1002
“Export_AMF” 7.4.21078.1002
“Rhino Render” 7.4.21078.1002
“Import_DST” 7.4.21078.1002
“PLY - Polygon File Format Export” 7.4.21078.1002
“Import_AMF” 7.4.21078.1002
“RhinoCycles” 7.4.21078.1002
“IronPython” 7.4.21078.1002
“Grasshopper” 7.4.21078.1002

wim · April 23, 2021, 8:05am

Hoi Gijs -
That laptop isn’t in line with the hardware recommendations for Rhino 7, but, having said that, it looks like I’m running on the same model. I haven’t run into issues with geometry disappearing so I’m wondering if this is file-specific.

I’m running macOS Big Sur - your student is on Catalina - but I used Catalina on this machine in the past without issues.

Also, I see that I have been running with the GPU Tessellation setting in Options > OpenGL unchecked. A very quick test with checking that option doesn’t seem to make a difference but that’s just a scene with a simple box. It’s probably worth a try.

If you get a hold of a specific file, I can give that some beating here…
-wim

Gijs · April 25, 2021, 9:29am

@wim, here is a file and screenshot where you can see that objects are partly disappearing. When I open the file here it looks normal though.

description from the student:

Here is a file where the problem happened and a screenshot in case it doesn’t look the same for you. I had just finished all of the helix/ spiral task and was playing around with moving the freeform curve so the helix would update its shape too, but I accidentally clicked on a different object than the freeform line and then this happened. When I clicked “cmd z” a small section of the blue helix returned but nothing else.

And the other curves and the vertical lines disappeared apart from small sections ( the green and red parts) even though I wasn’t touching them

Helix-Spiral.3dm (3.1 MB)

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Disappearing geometry

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