Hi,
I need a productimage with a specific backgroundcolor (RGB 247,247,247). I set my rendersettings like you can see in the Images. The rendered image in R8 shows a wrong color. In R7 and befor it works fine. I safe the file back to R7, run it in R7 and rendered with exactly the same settings. The color was correct.
My R8 and graphics are uptodate
regards
Frank
Here is my syteminfo:
Rhino 8 SR14 2024-11-20 (Rhino 8, 8.14.24325.13001, Git hash:master @ ad007964cf1a5811240aff49478f7fccc15b6a5b)
License type: Commercial, Build 2024-11-20
License details: Cloud Zoo
Windows 11 (10.0.22631 SR0.0) or greater (Physical RAM: 32GB)
.NET 7.0.20
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 2080 Ti (NVidia) Memory: 11GB, Driver date: 11-6-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 566.14
> 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: 11-6-2024
Driver Version: 32.0.15.6614
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11 GB
Rhino plugins that do not ship with Rhino
C:\Users\Frank\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\NVIDIADenoiser\0.4.3\NVIDIADenoiser.Windows.rhp “NVIDIADenoiser.Windows” 0.4.3.0
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.14.24325.13001
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\AnimationTools.rhp “AnimationsWerkzeuge”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.14.24325.13001
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.14.24325.13001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.14.24325.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.14.24325.13001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.14.24325.13001
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”
In rendered-view the backgroundcolor is correct 247,247,247. I choose the “Rhino Renderer”, color changes to 238,238,238 - I select the “Legacy Rhino Renderer”, the color changes to 251,251,251. In R7 the “Legacy Rhino Renderer” does the same 251,251,251.
I change the background colorsettings to do a workaround - no success. So my question is: does anybody else know this issue? You can try with an empty new file. I think it´s a bug. May be Mc Neel take a look at it please.
Regards,
Frank
Hi @Frank_Meyer ,
I’ve filed this issue as https://mcneel.myjetbrains.com/youtrack/issue/RH-84939 and can repeat it here.
Two possible workarounds for you that I found are to disable Linear workflow in the Color Adjustment settings of the Rendering panel or change the Gamma value there to 1.00. Both will preserve the background color but will also impact the material colors.
Hi Brian,
Thaks for your reply. I tried it, but it´s not satisfying.
Gamma set to 1, LWF off: Backround correct but bad quality.
Gamma set to 1, LWF on: Same as LWF off.
Gamma set to 2.2, LWF off: Backround not correct (251,251,251) bad quality.
Gamma set to 2.2, LWF on: Backround not correct (238,238,238) quality ok.
First I can do the renderwork in R7 but that´s not the solution. While trying the settings Rhino crashed. Raytraced viewmode was active and I recognize the viewport turns to half magenta - half white before rhino crashed.
regards
Yes, I found the same results with the workarounds I mentioned. It is, I agree, not a permanent solution but the developer is looking into a real fix. You’d have to use masked adjustment layers to post process the gamma without touching the background color. Or, maybe in the meantime, while the gamma issue is fixed, render with a transparent background and composite in post with the right BG color.
Note that you can also render out material and/or object id channel and use that to do the masking, then composite onto correct background:
Thanks a lot!
I think, I´ll wait and see.
