Why does Octane generate unused materials?

[mitchino]

I have a scene with a whole load of materials many of which aren't applied to any objects in the scene. When I start the live viewer, Octane generates these materials, and also converts other materials from Arnold etc before it displays a preview. It can take quite a bit of time. I know I can clean these unused materials from my scene, but some of them will be used later on.

Is this normal behaviour? Seems pointless.

[aoktar]

Yes it will keep all materials for special reasons. It's different than others for design purposes for live mode.

[augdalmo]

Hi Aoktar,

A scene may be several setup of objects and material for various reason. Why they must be loaded all materials if then they will not used all for the render? When I need to Edit in Standalone the plugin export ALL materials. This is time consuming expecially when I une very large image textures, I then must delete they manually. Could you add a command that can exclude unuseded materials? It will be appreciated.
Many thanks.

Manu

[aoktar]

I think that my explanations is not making much sense. It's not a matter of adding one command. It's not so simple as you thought. I did this in past and caused a lot of problems to me. And i cancelled, it's just available for Picture Viewer. Things are much more complicated for Live mode.