OctaneRender™ 2019.1 RC3

[funk]

This is expected, because if albedo (diffuse) is not present, then the transmission layer and the specular layer essentially becomes a specular material on its own, and so it uses the same model as the one specified by "Reflection model".

If I disconnect albedo, and set specular and transmission to 1, it becomes solid. This is not how the specular material works.

EDIT: Actually it seems disconnecting albedo is giving it some default color thats close to white, which means you get no transmission.
Setting albedo to black, makes it work like the specular material (BRDF controlled by reflection model). It's a bit confusing, but I think I understand.
You need to set albedo to something like 0.0001, if you want to control both models in a "glass" material.
You dont get the same result as a specular material if you set both models to the same value though. I'm not sure if that's intentional.

[Daniel_Ward]

Hi Guys,

there is something funny going on (or the way it works has changed) for Universal Materials using Transmission and Specular in Octane 2019.1 and 2019.2.
Basically specular surfaces render like they have a very high IOR if the "Transmission Model is set for 'Octane', Beckman' or 'GGX'. It renders as expected however when the transmission model is 'Lambertian'.
Same issues for all Kernels.

Cheers, Dan.

[natemac00]

No files to run daemon?

UPDATE: The install exe has all the files, the ZIP does not.

[wallace]

If I disconnect albedo, and set specular and transmission to 1, it becomes solid. This is not how the specular material works.

EDIT: Actually it seems disconnecting albedo is giving it some default color thats close to white, which means you get no transmission.
Setting albedo to black, makes it work like the specular material (BRDF controlled by reflection model). It's a bit confusing, but I think I understand.
You need to set albedo to something like 0.0001, if you want to control both models in a "glass" material.
You dont get the same result as a specular material if you set both models to the same value though. I'm not sure if that's intentional.

Rethinking this, I think it might be the best if I remove transmission model to avoid this confusion.

I will change this transmission model to transmission type to allow you to specify whether this transmission is ("Specular", "Diffuse", or "Thin wall"), so that you only specify one BRDF model in all cases.

[wallace]

Hi Guys,

there is something funny going on (or the way it works has changed) for Universal Materials using Transmission and Specular in Octane 2019.1 and 2019.2.
Basically specular surfaces render like they have a very high IOR if the "Transmission Model is set for 'Octane', Beckman' or 'GGX'. It renders as expected however when the transmission model is 'Lambertian'.
Same issues for all Kernels.

Cheers, Dan.

Do you have a scene that I can take a look?

[Daniel_Ward]

Hi Wallace,

Could I send you an ORBX?

If you send me a PM with an e-mail address, I'll give you a Onedrive link.

Cheers, Dan.

[J.C]

Affect alpha in material settings is not working as in previous versions of Octane.

[oscartung]

it appears that octane 2019 uses much more vram compare to 4.02 for the same scene.
here's a screenshot

[J.C]

it appears that octane 2019 uses much more vram compare to 4.02 for the same scene.
here's a screenshot

Check your Parallel and Max tile samples. The higher the values the more RAM they take.

[sauloarruda]

I have made a particle simulation in Houdini, and I found a bug. When the denoiser pass finishes, It gets very odd. I am attaching two images to show the problems, and the orbx file.

Thanks,

Saulo