I’m having an issue with backface rendering in the Render Display Mode that started a few months ago but I’my only getting to posting about now. In my model, I added a number of landscaped plants to help preview what the space will look like for an architectural project. I produced them with the old school video game method of two perpendicular planes with a PNG image utilizing an alpha channel intersecting in the middle to give an approximation of 3D depth. It all looked great for a few weeks, but then one day I opened it and the transparency of the plants was totally screwed up. Suddenly all I see is the environmental background, or some of the other objects in the scene but they are in Arctic Mode, or something else entirely.
It’s not clear or consistent why this happens, except that I’m almost positive that it’s an issue with how transparency works with backfaces. Sometimes if I select an offending object the issue will go away and it will render correctly, only to return the moment I deselect the object. If I select all the objects (there are a few hundred), the issue goes away until I deselect them. I feel like I’ve looked at every possible button or option in the various options and settings, but maybe there’s something I missed. Please see the image attached. Has anyone else dealt with this issue or have any ideas?
Here’s my system info:
Rhino 8 SR5 2024-3-12 (Rhino 8, 8.5.24072.13002, Git hash:master @ e3530849b75f00b2b977766a567ae29b055837e9)
License type: Commercial, build 2024-03-12
License details: Cloud Zoo
Apple macOS Version 14.3.1 (Build 23D60) (Physical RAM: 32GB)
Mac Model Identifier: Mac14,5
Language: en-US (MacOS default)
.NET 7.0.0
Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Apple M2 Max
Color LCD (1800 x 1169 @ 120.00Hz)
DELL S2421HS (1920 x 1080 @ 75.00Hz)
USB devices
None
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/libswiftCoreImage.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftMetal.dylib
/usr/lib/swift/libswiftOSLog.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftQuartzCore.dylib
/usr/lib/swift/libswiftUniformTypeIdentifiers.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswift_Concurrency.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/swift/libswiftsimd.dylib
/usr/lib/swift/libswift_StringProcessing.dylib
/usr/lib/swift/libswift_RegexParser.dylib
/usr/lib/swift/libswiftCryptoTokenKit.dylib
/usr/lib/usd/libusd_ms.dylib
/usr/lib/swift/libswiftCoreAudio.dylib
/usr/lib/swift/libswiftCoreLocation.dylib
/usr/lib/swift/libswiftCoreMedia.dylib
/usr/lib/swift/libswiftCompression.dylib
/usr/lib/swift/libswiftCoreMIDI.dylib
/usr/lib/swift/libswiftAVFoundation.dylib
/usr/lib/swift/libswiftCoreML.dylib
/usr/lib/swift/libswiftFileProvider.dylib
/usr/lib/swift/libswiftIntents.dylib
/usr/lib/swift/libswiftAccelerate.dylib
/usr/lib/swift/libswiftGLKit.dylib
/usr/lib/swift/libswiftGameplayKit.dylib
/usr/lib/swift/libswiftMetalKit.dylib
/usr/lib/swift/libswiftModelIO.dylib
/usr/lib/swift/libswiftSceneKit.dylib
/usr/lib/swift/libswiftSpriteKit.dylib
/usr/lib/swift/libswiftVision.dylib
/usr/lib/swift/libswiftRegexBuilder.dylib
/usr/lib/swift/libswiftDemangle.dylib
/usr/lib/swift/libswiftVideoToolbox.dylib
/usr/lib/swift/libswiftObservation.dylib
/usr/lib/swift/libswiftWebKit.dylib
/usr/lib/swift/libswiftNaturalLanguage.dylib
/usr/lib/swift/libswiftSystem.dylib
/usr/lib/swift/libswiftMapKit.dylib
/Users/joshuasauerman/Library/Application Support/McNeel/Rhinoceros/MacPlugIns/DatasmithRhino7.rhp/DatasmithFacadeCSharp.dylib
/Users/joshuasauerman/Library/Application Support/McNeel/Rhinoceros/MacPlugIns/DatasmithRhino7.rhp/libtbbmalloc.dylib
/usr/lib/log/liblog_network.dylib
Rhino plugins that do not ship with Rhino
/Users/joshuasauerman/Library/Application Support/McNeel/Rhinoceros/MacPlugIns/DatasmithRhino7.rhp “Datasmith Exporter” 5.2.1.0
Rhino plugins that ship with Rhino
/Applications/Rhino 8.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 8.5.24072.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 8.5.24072.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCodePlugin.rhp “RhinoCodePlugin” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PDF.rhp “PDF Export” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/PlugIns/SectionTools.rhp “SectionTools” 8.5.24072.1002
/Applications/Rhino 8.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 8.5.24072.1002
/Applications/Rhino 8.app/Contents/PlugIns/Displacement.rhp “Displacement” 8.5.24072.1002
/Applications/Rhino 8.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 8.5.24072.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 8.5.24072.13002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 8.5.24072.13002
