Print view
› Board index › Octane Licensed Customer Forums › Plugin Discussion/Support › Blender › Bug Reports

Premultiplied alpha bug
Tweet

Forums: Premultiplied alpha bug
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 a reply

Re: Premultiplied alpha bug

Postby J.C » Mon Nov 18, 2019 7:40 pm

J.C Mon Nov 18, 2019 7:40 pm
aufwind wrote:For you to try out just the Render Layer with alpha channel Export and a Version with a different background.
I'm still on Octane Blender Version 3.07. So maybe it is a Problem with newer Versions or just some setting problems in Photoshop...



I don't know if v3 will work with my RTX GPUS but v4 does. Unfortunately on v4 it is the same.
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
J.C
Licensed Customer
Licensed Customer
 
Posts: 1723
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław
Top

Re: Premultiplied alpha bug

Postby J.C » Mon Nov 18, 2019 8:46 pm

J.C Mon Nov 18, 2019 8:46 pm
I've found the reason of such behaviour. The Blender's gamma was set to .04545 and display device was set to sRGB.
Setting back to None and gamma 1 brought back the correct alpha on renders.
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
J.C
Licensed Customer
Licensed Customer
 
Posts: 1723
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław
Top
Previous
Post a reply

Return to Bug Reports


Who is online

Users browsing this forum: No registered users and 3 guests

Wed Apr 24, 2024 3:16 am [ UTC ]
The team • Delete all board cookies
Board index