Extreme differences in SSS between Preview and Final Render

Blender (Export script developed by yoyoz; Integrated Plugin developed by JimStar)
Post Reply
pegot
Licensed Customer
Posts: 934
Joined: Mon Nov 07, 2011 3:44 am

I set up an object with Subsurface Scattering and it looked as I wanted in Preview mode. When I rendered final image, however, the SSS was not showing up. I exported as ORBX to test in Stand Alone and no SSS was showing there either until I radically changed transmission and medium settings.

I then copied those new transmission and medium settings back to my original Blender file. In Preview mode the SSS showed up this time, but much too saturated and extreme. However when rendered it looked as it did in Stand Alone.

So something is happening between how Octane Blender shows SSS when in preview mode and in final rendering. Either this is a bug, or there is something odd going on in my file causing this issue.

The last test I tried was importing the ORBX from Stand Alone with the adjusted settings into Octane Blender as a proxy file. Only then did the preview and rendered versions match. As far as I can tell all my color and imaging preferences are set up correctly and as I usually do. I even set the preview imager to override to ensure preview and render are using the same settings.

Can devs look into this? The file was created in Blender Octane 2019 and uses Vectron displacement node, but issue is also occurring in version 2018.
Iris-v1.jpg
Iris-v2.jpg
Attachments
Iris-SSS-Issue.7z
(4.76 MiB) Downloaded 177 times
Win 10
3.7Ghz i9 10900k / 64GB
ASUS STRIX Z490-E
PSU: PowerSpec 850Wd
RTX 3090 Asus Tuff

Network rendering:
Win 10
4.2Ghz i7 7700k / 64GB
AsRock SuperCarrier
PSU: EVGA 1200w
RTX 3080 Ti EVGA Hybrid
RTX 3080 ASUS Tuff
GTX 1080ti SC Black (wc)
J.C
Licensed Customer
Posts: 1857
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

Your meshes have Solidify modifier disabled for Viewport and that's why you have different render in viewport and in final render (F12).
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
pegot
Licensed Customer
Posts: 934
Joined: Mon Nov 07, 2011 3:44 am

Thank You! I suspected it must have been user error. Really appreciate the second set of eyes.
Win 10
3.7Ghz i9 10900k / 64GB
ASUS STRIX Z490-E
PSU: PowerSpec 850Wd
RTX 3090 Asus Tuff

Network rendering:
Win 10
4.2Ghz i7 7700k / 64GB
AsRock SuperCarrier
PSU: EVGA 1200w
RTX 3080 Ti EVGA Hybrid
RTX 3080 ASUS Tuff
GTX 1080ti SC Black (wc)
J.C
Licensed Customer
Posts: 1857
Joined: Thu May 13, 2010 6:35 pm
Location: Wrocław

You're welcome!
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
System – Windows 11
My Behance portfolio, Blender plugin FB support group
Post Reply

Return to “Blender”