Glass props in Octane

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Glass props in Octane

Postby gsfcreator » Sat Apr 14, 2018 3:03 pm

gsfcreator Sat Apr 14, 2018 3:03 pm
Hey there, folks :)

I'm rendering props that got lots of reflections (glass). when I render in FF, everything seems right on the get-go. this is a very simply settings just for the testing:

glassinfirefly1.png


when I render the same in Octane, this is what I get:

glassinoctane1.png


now, my questions is:

1. How do I tweak this to match what its supposed to be? (I understand that I should change the specular, roughness and IOR - just wish to save time of trial and error by your kind input of a deeper understanding of OR)

2. do I need to change every scene, every time, when I choose to render with octane? this is quite tedious, chancing each and every material, since some of my scenes got lots of those. isn't there any simpler way to get all the details directly from poser's material room, "as it should be"?

thanks <3
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Re: Glass props in Octane

Postby wimvdb » Sat Apr 14, 2018 3:44 pm

wimvdb Sat Apr 14, 2018 3:44 pm
Convert Transparent to Specular was probably off in the configuration screen (setup button in Settings).
Easiest now is to select the glass, right click and open LiveDB and load the Clear glass material from the Glasses category.
Then Select that material and right click, copy specular material node, then right click again and select Paste Specular material to All Materials named <currently selected material> (do not know what the name was)
It will copy that new material to all glasses.

About not having to do the materials again with every new scene.
There are several workflows where you can minimize it.

1) After you converted it, right click it and choose Save Octane nodes to Poser Material.
When you are finished, save the props in the library (it will now have octane materials as well)

2) Export the material as ORBX material in LocalDB. You can do this at Prop or Figure level. Afterwards you can load import the orbx materials again for this figure or prop.

3) If you want to use the same props in a new scene, do the following: Load that converted scene first, go into the plugin and rightclick RenderTarget. Now choose Export All Octane settings. Give it a name you recognize and now you can create a new scene Load the props which you want and go to the plugin and do Import All Octane settings and choose that file you saved.
The plugin will now change all the props which are in the new scene and had materials in the old scene to Octane materials.

Method 3 is what I usually do
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Re: Glass props in Octane

Postby gsfcreator » Sat Apr 14, 2018 8:01 pm

gsfcreator Sat Apr 14, 2018 8:01 pm
thanks, wimvbd! I'm learning :) :

glassinoctane2.png


the wine color still need some tweaking. how do I remove all the white noise dots? more passes?(this was 5000).

I followed you advice and waiting for my new pc (with 1080TI :) ). I think I'll be able to experiment a lot more with that one :)
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Re: Glass props in Octane

Postby wimvdb » Sat Apr 14, 2018 8:16 pm

wimvdb Sat Apr 14, 2018 8:16 pm
In the Imager section set Hotpixel Removal to 0. That will probably remove them all. You can do that during or after the render (render will not restart)

For the wine - check in liveDB in the liquid section - there are several red wine materials.

You will love that new PC and the 1080ti. It will render a LOT faster as what you have now.
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Re: Glass props in Octane

Postby gsfcreator » Sat Apr 14, 2018 8:33 pm

gsfcreator Sat Apr 14, 2018 8:33 pm
wimvdb wrote:In the Imager section set Hotpixel Removal to 0. That will probably remove them all. You can do that during or after the render (render will not restart)

For the wine - check in liveDB in the liquid section - there are several red wine materials.

You will love that new PC and the 1080ti. It will render a LOT faster as what you have now.


I'm sure! what I have now was a beast 4 years ago. now its not something I can seriously work with. can't wait! :)

I'm starting to research IBL/HDRi and have some questions - I'll create a new topic for that one :)
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Re: Glass props in Octane

Postby gsfcreator » Sat Apr 14, 2018 8:54 pm

gsfcreator Sat Apr 14, 2018 8:54 pm
wimvdb wrote:In the Imager section set Hotpixel Removal to 0. That will probably remove them all. You can do that during or after the render (render will not restart)

For the wine - check in liveDB in the liquid section - there are several red wine materials.

You will love that new PC and the 1080ti. It will render a LOT faster as what you have now.


the hotpixel removal on 0 seem to soften the image a great deal...any other way to avoid those hot-spots? why is it there in the first place? too little light? (I used HDRI lighting only for that specific test).
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Re: Glass props in Octane

Postby samhal » Sun Apr 15, 2018 4:46 am

samhal Sun Apr 15, 2018 4:46 am
the hotpixel removal on 0 seem to soften the image a great deal...any other way to avoid those hot-spots?


Anxiously awaiting a reply! :lol:
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Re: Glass props in Octane

Postby whersmy » Sun Apr 15, 2018 8:19 am

whersmy Sun Apr 15, 2018 8:19 am
Try to avoind hotpixel removal as it will also remove details sometimes

try these ones:
- make sure the tray, glass and water have a bit of roughness (basically for all materials)
- set specular sampling depth to around 48
- is your scene scale correct?
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Re: Glass props in Octane

Postby gsfcreator » Mon Apr 16, 2018 9:16 am

gsfcreator Mon Apr 16, 2018 9:16 am
whersmy wrote:Try to avoind hotpixel removal as it will also remove details sometimes

try these ones:
- make sure the tray, glass and water have a bit of roughness (basically for all materials)
- set specular sampling depth to around 48
- is your scene scale correct?


all the materials got roughness.
my sampling depth is 24 at the moment - can that be the case?
scene scaled correct.

this is a part of a test render I did now. 13200 samples, just a model, 2 mesh lights and HDRi, the render of the model looks decent, but the ground got a lot of noise:

noise.png
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Re: Glass props in Octane

Postby face_off » Sun Apr 22, 2018 7:22 am

face_off Sun Apr 22, 2018 7:22 am
Pls read the link in my signature to noise removal tips.

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