Rhino render / material and object ID?

Rendering
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1

Hi!

Has anyone figured this one? There is clearly an option for material and object ID under the render settings and also in the render window. But how to set these?

mate id
mate id1920×1200 325 KB

material IDs
material IDs331×551 18.3 KB

2

Make sure you are on at least Rhino 8.6

Material IDs
Material IDs1920×585 45 KB

Note though that what you see in the render window is a visualization of the data. When you save it out as EXR you’ll find that the data for the IDs is a number between 0 and 32676 (integers cast as floats). Check in GIMP or Blender as EXR viewers to see the values.

You can load this into Blender for instance to do compositing.

3

Thanks Nathan!

I will give it a stab. Didn`t know about the EXR format till today :smiley: I was just used to using the material ID approach in VRay, where you can set an ID (integer or colour) for an object or material.

Are the IDs in Rhino assigned automatically or is there any way to adjust them?

Petr

4

Unfortunately there is currently no way to assign or control these. They are calculated based on object id and material instance id. So indeed, at the moment these are automatically assigned.