Color management issues (preview vs final render)

Sub forum for bug reports
Forum rules
Before posting a bug report, please check the following:
1. That the issue has not already been disclosed
2. That the issue is specific to this plugin, and not Octane in general (Try reproducing it in Standalone)
Bugs related to the Octane Engine itself should be posted into the Standalone Support sub-forum.


All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
Post Reply
J.C
Licensed Customer
Posts: 1850
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

Hi,
I want to use built in Blender's Color management instead of Octane's but is only works properly in final render. When doing preview render in viewport the image is washed out and is different compared to final render.
Steps to reproduce:
1. Disable Octane Imager.
2. Enable Prefer Image Type to HDR.
3. In Blender's Color management set View transform to AgX.
4. Render image and compare it to render preview. Both look different.

This issue has been there in all recent builds for some time and disabling Shared surface in preferences does not help as someone once suggested.
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
linograndiotoy
OctaneRender Team
Posts: 1351
Joined: Thu Feb 01, 2018 7:10 pm

Do not disable Imager, just set it to Linear.
J.C
Licensed Customer
Posts: 1850
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

Ok, that works.
Can you explain what is the use of "Prefer Image TYpe" in server settings?
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
linograndiotoy
OctaneRender Team
Posts: 1351
Joined: Thu Feb 01, 2018 7:10 pm

About the "Prefer Image Type", it is used to select the tonemap buffer type (LDR or HDR) in the Final Render.
By default, when the imager is active, Octane uses LDR in the Final Render. Otherwise, it uses HDR.
With this option, users can decide LDR or HDR themselves.
J.C
Licensed Customer
Posts: 1850
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

This makes sense, but it does not work in preview window. The image in preview is LDR even if HDR is enabled. In final render HDR is displayed properly.
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
linograndiotoy
OctaneRender Team
Posts: 1351
Joined: Thu Feb 01, 2018 7:10 pm

It works only for the final render.
J.C
Licensed Customer
Posts: 1850
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

Is it possible to make it work in 3d preview window?
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
Post Reply

Return to “Bug Reports”