BUG: modeler set pivot causes false object motion blur

[Tommes]

Hi guys,

if you set the pivot of an object in Modeler and don't use the origin (0,0,0) and you animate the object in Layout you will get false object motion blur in Octane. See picture below. The upper roll rotates out of the set pivot, but only if object motion blur is turned on. Quite lame. The only solution is to set all pivots to origin or move the objects to the origin. But then you have to place the objects in Layout, which in complicated scenes isn't productive at all.

upper roll pivot set in Modeler, lower roll pivot is origin

[juanjgon]

Thanks for report the problem. I will test it ASAP.

-Juanjo

[juanjgon]

I think that the problem is that you have a low value in the "objects motion blur steps" parameter in the render settings. In this kind of scenes with fast rotating objects you need at least 4 or 5 motion blur steps to get the correct motion blur rendered from Octane.

If you set the "objects motion blur steps" parameter to 4, the render in your sample scene is Ok.

-Juanjo

[Tommes]

Thanks Juanjo, never imagined that. Because of the difference between the two rolls. One will work fine with MB set to 2 and the other one not.