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Shadow catcher doesnt work on the newest Studio Octane, Im using Diffuse Material, and enabling
Shadow Catcher, and I also tried the shadow catcher material, it also doesnt work... What am I doing wrong?

You need to have a plane under the figures feet with the Shadow Catcher material on it.

Paul

there is a basic poser ground (as you can see behind the octane window) but does the shaoe matter, it used to work just fine in previous octanes. Does it HAVE to be the flat plane?

Tigersan wrote:there is a basic poser ground (as you can see behind the octane window) but does the shaoe matter, it used to work just fine in previous octanes. Does it HAVE to be the flat plane?

It works for me with the Poser COnstruct (the default P11/P12 ground). Both for Texture environment and as a Daylight with sky texture.
I just made the background node at opacity 0 and made the Ground node a diffuse material and enabled Shadow Catcher. Seems to work as before.

well im trying to figuer out what am i doing wrong... im doint it exactly the same wah i did on Older Octane, except this time it doesnt work and when it does the shadow is messed up it has a weird shape...

Tigersan wrote:well im trying to figuer out what am i doing wrong... im doint it exactly the same wah i did on Older Octane, except this time it doesnt work and when it does the shadow is messed up it has a weird shape...

What are you using as HDRI? Daylight model with Sky texture or Texture environment?
Have you changed the HDRI to see if it is related to the HDRI itself? First HDRI i used when it tested is was too dark and overcast sky, so hardly any shadow. When I changed that to one with a bright sun, I got a very sharp shadow.
For testing this, I used a single figure, construct and texture environment and a desert hdri from HDRIHaven. Construct was default (no texture).
Octane settings were pretty much default (Raytracing, AI lights on, no denoising). Construct had background opacity 0, ground Shadow caster enabled. Texture environment as lighting.

Can you try this scenario?

Im using texture environment. I know how to use it, my point is it doesnt look as good as it used to on older Octanes. The shadow looks painted on theres no depth, the ambient occlusion effect, it used to get darker under her foot. Now its completely flat... It just doesn't look realistic and some HDRI pictures theres no shadow at all... where there used to be on older octanes.

I see no difference at all between my P11 HDRI renders (Octane 2020.1.5) and my P12 HDRI renders.

P12 render (Octane 2020.2)


P11 Render (Octane 2020.1.5)


P12 render


P11 render


There is also no difference between and old render (P10 or P11 with Octane v3 or 4) apart from the obvious meshbreak in the knees. HDRI shadows are the same however.

P12 render


P11 render (Octane 3 or 4)


Not sure what is going on in your case.