Octane render experiments

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Re: Octane render experiments

Postby whersmy » Sat Sep 12, 2020 6:20 pm

whersmy Sat Sep 12, 2020 6:20 pm
Somehow ended up with this shot, lit by just a few spotlights. I`m now re-rendering one with sunlight falling in as well.
Attachments
Sunlight.jpg
Spotlights.jpg
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Re: Octane render experiments

Postby whersmy » Mon Sep 14, 2020 8:06 am

whersmy Mon Sep 14, 2020 8:06 am
Last one, lit by 7 IES lights..rendered overnight in about 9 hours on 2x GTX1060
A lot of noise still, I think I have a few random glass objects that`s causing it.
Attachments
IES_lights.jpg
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Re: Octane render experiments

Postby whersmy » Tue Sep 15, 2020 6:37 am

whersmy Tue Sep 15, 2020 6:37 am
And letting one render out after 13 hours overnight with daylight, straight out of the viewport:
Attachments
Day.jpg
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Re: Octane render experiments

Postby whersmy » Fri Sep 18, 2020 6:38 am

whersmy Fri Sep 18, 2020 6:38 am
Cooked after 11 hours till 10000s/px, changed the overall look, lights and floor. Floor is a mix-material with OSL

This might be interesting, I re-rendered the same scene but without the very glossy standing lamps and table lamps turned on, and the rendertimes went down to about 45 minutes instead of 11 hours..
I did adjust adaptive sampling when difficult areas were cleaning up, but still, big difference
Attachments
45 minutes-stand-table-lamps-off.jpg
Parquet.jpg
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Re: Octane render experiments

Postby whersmy » Fri Sep 18, 2020 5:44 pm

whersmy Fri Sep 18, 2020 5:44 pm
Changed the shape of emitters (left image -> table and standing lamps) from actual high poly bulb shape to simple low poly plane emitters and the rendertime decreased drastically to 4 hours instead of around 11. .IES lights and sampling rate to 10k.
Attachments
plane_emitters.jpg
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Re: Octane render experiments

Postby whersmy » Sat Sep 19, 2020 1:39 pm

whersmy Sat Sep 19, 2020 1:39 pm
Been tring out some terazzo tiles, getting there
Attachments
Terazzo_v1.orbx
(71.85 KiB) Downloaded 228 times
node-setup.png
Terazzo_v1.png
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Re: Octane render experiments

Postby whersmy » Mon Sep 21, 2020 4:17 pm

whersmy Mon Sep 21, 2020 4:17 pm
Trying out some different light colours
Attachments
Parquet.jpg
Octane 2022.1.1 nv535.98
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Re: Octane render experiments

Postby jimho » Tue Sep 22, 2020 12:10 am

jimho Tue Sep 22, 2020 12:10 am
a lot of very cool renderings!

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Re: Octane render experiments

Postby whersmy » Wed Oct 20, 2021 1:31 pm

whersmy Wed Oct 20, 2021 1:31 pm
Finally got to test out my new 3080, it`s blazing fast and makes iterating on lighting so much faster. For the HDRI of the scene I used the ACES 2065-1 colorspace option instead of *Linear + srgb*. This overrides the gamma option. Not sure if that`s correct, but the lighting is superb. I`m on OR 2021.1 XB1. Some 16-bit colour correction in Photoshop.

- Does anyone know what White spectrum to use? For this render I used D65 with *old pipeline*, but I don`t really see much difference as I build up the scene from scratch.

- The file is used is an .orbx from the 3dsmax plug-in in Standalone, and I noticed that the camera is skewed. Is that common?
Attachments
d65.jpg
Render_aces_d65_denoised.jpg
Octane 2022.1.1 nv535.98
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Re: Octane render experiments

Postby elsksa » Wed Oct 20, 2021 1:55 pm

elsksa Wed Oct 20, 2021 1:55 pm
whersmy wrote:IES lights and sampling rate to 10k.

Hi whersmy, beware that Sampling Rate ≠ Light Samples.
In case it might help, I have mentioned it here: https://www.elsksa.me/scientia/cgi-offline-rendering/octane-render-settings


whersmy wrote:For the HDRI of the scene I used the ACES 2065-1 colorspace option instead of *Linear + srgb*. This overrides the gamma option. Not sure if that`s correct, but the lighting is superb.

It is indeed incorrect. Below are my recommendations:

• General Octane "Color Management": https://www.elsksa.me/scientia/cgi-offline-rendering/octane-render-color-management
• ACES in Octane: https://www.elsksa.me/scientia/cgi-offline-rendering/octane-render-aces
• Universal CGI "Color Management":https://www.elsksa.me/scientia/cgi-offline-rendering/cgi-color-management-survival-kit
• Understanding what "Linear" means: https://www.elsksa.me/scientia/digital-imaging/linear-in-digital-imagery

whersmy wrote:- Does anyone know what White spectrum to use? For this render I used D65 with *old pipeline*, but I don`t really see much difference as I build up the scene from scratch.

You will find the information in the link from above (Octane "Color Management").

Feel free to let me know if section(s) of my pages are unclear or if you have any questions.
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