It seems to be a recent thing, but in Cycles renders with an HDR environment, flat color background, shadow only ground plane (basic ‘light box’ product render) we’re seeing reflections in the ground plane. It doesn’t seem to happen in V7.
It’s still there in the 08-06 version.
Sent a file…
It’s happening on a box here…also I’m not sure your sphere sample isn’t in fact showing the issue.
V8:
V7:
Rhino 8 SR10 2024-8-6 (Rhino 8, 8.10.24219.11001, Git hash:master @ b88a537a9dda5345a3c2bb4bd2ad0c2cd14cb138)
License type: Not For Resale Lab, build 2024-08-06
License details: Cloud Zoo
Windows 11 (10.0.22631 SR0.0) or greater (Physical RAM: 64GB)
.NET Framework 4.8.9256.0
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 3090 (NVidia) Memory: 24GB, Driver date: 7-30-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 560.81
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0
- Secondary monitor attached to adapter port #1
Secondary graphics devices.
Intel(R) UHD Graphics 770 (Intel) Memory: 1GB, Driver date: 7-24-2023 (M-D-Y).
> Integrated graphics device with 4 adapter port(s)
- There are no monitors attached to this device!
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: 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: 7-30-2024
Driver Version: 32.0.15.6081
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 24 GB
Rhino plugins that do not ship with Rhino
C:\Program Files\Bongo 2.0 (64-bit)\Rhino6\Bongo.20.rhp “Bongo 2.0”
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.10.24219.11001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.10.24219.11001
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.10.24219.11001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.10.24219.11001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.10.24219.11001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.10.24219.11001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”
So your sample there actually does show the unwanted reflection, just change the angle to be lower to make it obvious.
I am not a beginner and I am getting tired of being gaslit that my issues don’t exist or are my fault because of my bad workflow that’s worked fine since Brazil was being actively developed!
1 Like
Yes, I realized that yesterday, but haven’t gotten around to logging a bug for that just yet.
When I don’t directly can reproduce errors I will ask for steps how to do so. That is not gaslighting. You are entitled to your opinion, though.
Logged as: RH-83327 Reflection instead of shadow on shadows-only groundplane
Until fixed I would suggest using a plane with the same color as the background (assuming you use single solid background color) instead of shadows-only ground plane.
Make it large enough to be able to catch the entire shadow. In all likelihood it will be much smaller than the ground plane geometry. And since it won’t have the shadow catcher part in it’ll be faster as well.
RH-83327 is fixed in Rhino 8 Service Release 13 Release Candidate
Jim to be clear, we all know you and your extensive history with Rhino… we have a ton of respect for your feedback. No offense intended at all, we just want to make sure we are understanding the problem so we can get it sorted, sorry if you felt differently.
I missed this myself the first time I tried to reproduce it.
1 Like
RH-83327 is fixed in Rhino 8 Service Release 13
@JimCarruthers are you seeing this resolved in 8.13?
It appears be.
Thanks!
2 Likes