r3.07 vs 3.08 render

[sguitton]

Hello Oktar.

Updating from 3.06 to 3.07 didn't gave the same renders (you told me that sometimes it appens):

Re: 3.06.2 to 3.07

Postby bepeg4d » Mon Nov 13, 2017 2:43 pm
Hi sguitton,
to answer at the numerous request, in 3.07, the emission node has been renewed with more settings and options:
viewtopic.php?f=24&t=62395
Unfortunately, in some circumstances the retro compatibility cannot be guaranted, and the emission needs to be manually corrected.
You need temporally stay with R18/3.06.2 with this specific scene, I guess.
ciao beppe



I'v just update from 3.07 to 3.08 and same issue, once again, not the same render (see attachment), no retro compatibility.
How can I get my software up-to-date if every release doesn't give the same results ?
Just can't update

A. MacOS 10.12.6
B. internal GT740+GTX980Ti + 4x1080Ti (slave)
C. 32GB RAM
D. Nvidia web driver 378.05.05.25f04
E. OctaneRender Standalone (3.08 on slave PC))
F. OctaneRender plugin (3.08)
G. C4D R18.057

[bepeg4d]

Hi,
I have written you a PM.
ciao Beppe

[bepeg4d]

Hi,
the issue comes from the latest 3.08 SDK, and has been introduced with 3.08RC2, so it still render fine in 3.08test6.
I have already shared the scene with the SDK devs, thanks again for your collaboration.
ciao Beppe

[bepeg4d]

Hi sguitton,
I have discussed about your issue with the devs. Unfortunately, in this particular case, the issue comes up because in 3.07 the displacement was wrongly evaluated, if you detach the Displacement node of the glass in 3.07, you get the exact same result like in 3.08:

Because of this, there is not something that can be fixed, so, as a possible solution, apart from rendering with 3.08test6.1, my suggestion is to change the glass in 3.07 in order to reduce the yellowish tint, by adding a Color Correction node to the Transmission color, decreasing the Saturation:

And by increasing the Density of the Scattering Medium node:

Then save the scene in 3.07, open it in 3.08, and reconnect the Displacement node:

Unfortunately the effect is not the same, since the new corrected Displacement is totally different from the old one, but the color of the glass is no more affected by it.
The devs also report to add a bit of filter to the label's displacement, to obtain the bevel at the borders, and slightly increase the Amount, to solve the little interference:

ciao Beppe