Ghosted View Pipe - Internal Isoparm Shade Annoyance

Ghosted view of any pipe displays “shades” of the isoparms inside the pipe. Didn’t to do this until recently if memory servers. Minor annoyance, though devalues the quality of Ghosted View.


Issue amplified when a contrasting color is behind the scene:

Existed for a while (months?) after a relatively recent change to graphics. Sorry, I’ve forgotten exactly when this surfaced.

To repeat:

  1. Draw curve

  2. Pipe the curve

  3. Display set to Ghosted

Software information

Software versions
Rhinoceros version: 5.1 WIP (5B48w)
IronPython version: 5.1.2015.131
Language: en (MacOS default)
OS X version: Version 10.10.3 (Build 14D136)


Third party kernel extensions
com.paragon-software.kext.VDMounter (526.1)
org.virtualbox.kext.VBoxDrv (4.3.12)
org.virtualbox.kext.VBoxUSB (4.3.12)
org.virtualbox.kext.VBoxNetFlt (4.3.12)
org.virtualbox.kext.VBoxNetAdp (4.3.12)
com.paloaltonetworks.kext.pangpd (1.0.0)

Hardware information

Video hardware
Graphics: AMD FirePro D500 3072 MB
Memory: 3072 MB
Screen size: 3008 x 1692
Displays: BenQ LCD (216dpi 2x)

OpenGL information

OpenGL software
OpenGL version: 2.1 ATI-1.32.20
Render version: 2.1
Shading language: 1.20
Maximum texture size: 16384 x 16384
Z-buffer depth: 24 bits
Maximum viewport size: 16384 x 16384

Implementation settings
Use texture compression: No

Appearance settings
Antialiasing: 0x
Mip map filtering: None
Anisotropic filtering: None

Thanks, filed as

I see it here too with an Nvidia card versus your FirePro.

Thanks! In addition to Pipe, I believe I saw it in a Sweep as well as imported T-splines from Fusion.

I’ve seen this as well with a gt120, which I’d attributed at the time to an extracted copy of a surface from a closed poly surface which had been out on another layer so I’d just thought it was that. Opened same file up and hid the layer with the extracted surface and the artifacts are/ is still there.

Still an issue across all Macs models we’ve seen.

Attached is a file to expose. Set background to black.ghost issue.3dm (2.5 MB)

Hi Richard - I still see it here as well. I added a comment to the bug track item.