FilletSrf extra coarse display OpenGL vs. Direct3D

Serengeti (Rhino WIP)
1

When using FilletSrf, the preview is extra coarse, as if there is no AA at all:

image
image719×629 93.4 KB

Different in Direct3D: no edges and isocurves, looks like rendered:

image
image690×615 57.1 KB

Please run SystemInfo command in Rhino and send us the results. :saluting_face:

Rhino 9 SR0 2025-8-26 (Rhino WIP, 9.0.25238.12305, Git hash:master @ ba2cf38650b3af8790c8629a1f03c10309209bd2)
License type: Commercial, build 2025-08-26
License details: Cloud Zoo
Expires on: 2025-10-10

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 32GB)
.NET Framework 4.8.9310.0

Computer platform: DESKTOP

Standard graphics configuration using OpenGL
Primary display: NVIDIA GeForce RTX 2070 (NVidia) Memory: 8GB, Driver date: 1-26-2025 (M-D-Y). OpenGL(4.6.0 NVIDIA 572.16)
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port 0

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

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 1-26-2025
Driver Version: 32.0.15.7216
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB

OpenBLAS: OpenBLAS 0.3.29 DYNAMIC_ARCH NO_AFFINITY Zen MAX_THREADS=64.

Rhino plugins that do not ship with Rhino
C:\Program Files\SimLab\Plugins\SimLab 3D PDF From Rhino 6\plugins\SimLabPDFExporter.rhp “SimLab PDF Exporter”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 9.0.25238.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”

2

I’m not seeing that here; the AA in OpenGL mode is good as far as I can see and I do see isocurves in Direct3D.

→ You may want to update your graphics driver it is ~7 months old ←

Another thing that comes to mind is: have you started Rhino directly in Direct3D mode, or switched to it? It may be better to restart Rhino after switching display technology.

3

Today, I started seeing the preview without edges. I’ll investigate more and make a ticket.

4

Sure!

In the meantime I tried on a completely different PC (Intel graphics only).
Same picture in OpenGL

Same picture in Direct3D


In Direct3D, when I uncheck Shadows in the Display panel, the isocurves and edges come back.

I doubt it has to do with my current observation.
Also @stevebaer also advised against updating for now.

5

RH-89391 is fixed in Rhino WIP