Arnold vs Octane displacement

[andregodinho 0]

Hi there guys,

I 've been following the Design for Production course in Learn Squared. Mark Rigley uses Octane, and while watching the course I was able to get some nice displacements. While trying to replicate the shaders in Arnold, I'm just not able to reach that same displacement. It seems Arnold tries to distort the geometry while Octane just pushes and pulls the separate polygons I have on an already dense mesh. I know I'm supposed to subdivide things with the Arnold parameters tag, but I already have enough polygons for the effect I want...

Does anyone have an idea how to reach that same displacement using Arnold?

 

Here's the Octane displacement:

https://drive.google.com/open?id=0B-X0hS60UA2Gc0xiUFBrY2pKY3M

 

Here's how it looks in Arnold:

https://drive.google.com/open?id=0B-X0hS60UA2GSFlGbEFhdjA5WU0

https://drive.google.com/open?id=0B-X0hS60UA2GeWlmcDEzRlBmSG8

 

* The scale of the textures is the same, and I'm using the same bitmaps. I basically replicated the shader network from Octane to Arnold.

 

Thanks!

[iline 0]

I have the same beef with Arnold. As far as I could tell the Arnold tag with subdivisions is necessary to force sub-d computation. Also did you use a Normal Displacement node for the disp?

[andregodinho 0]

I have the same beef with Arnold. As far as I could tell the Arnold tag with subdivisions is necessary to force sub-d computation. Also did you use a Normal Displacement node for the disp?

 

Yes, I used a Normal Displacement node for the displacement, that's the only way to do it, right?

I tried some simpler tests using a lot of subdivisions on the Arnold tag, and setting the smoothing to linear. While I got close to the result I wanted, in my main geo it's just really hard to get that same beautiful displacement I got with Octane!

With Octane it was just a matter of changing the resolution of the texture to 4k and it went smoothly.

Well, I'll just have to keep trying!