Greg Hughes

I have a few questions about the ACES workflow.

(1) When I configure Houdini to use ACES colour space in Edit-OCIO Settings and click Apply do I need to reboot Houdini for it to work?

(2) I believe the conversion of textures to ACES is done by Houdini 20 now, at least if you use Karma.
Do you have to manually convert them if you use Mantra? If so, how?

(3) Do you need to set any parameter in Karma or Mantra when rendering if using ACES?

Thanks everyone, I will try it.

I have created a smoke sim at SOP level. When I use a Merge node to combine the Pyro Solver output with a geometry object I am using as a collision object they show in the viewport together, but when I render (Mantra) the smoke does not show. Is it not possible to combine them in the same render?

I am trying to also render the collider geometry brought in to the Geometry level with a Object Merge node.

Would I need to render the geometry I am using for the collision object by using a separate Geometry node at Objects level so it renders with the Geometry node that holds the pyro sim (both Display flags activated - blue)? Will this method create the proper occlusion between smoke and geometry, or is there another step like using a Forced Matte in Mantra to occlude the smoke with the object? Would I need to render each separately and combine them in Nuke?