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Object Info Random - inconsistent result
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Description

System Information
Operating system: Win10 64
Graphics card: gtx1050ti

Blender Version
Broken: 2.79, 2.8

Short description of error
Random output from Object Info depends on every object in scene, even Empties!
There are two identical scene sets with linked objects, but Empty belongs to Scene.001 only. Cube is instanced via duplifaces and Random produces different result if Empty isn't linked in both scenes.

Exact steps for others to reproduce the error
Open file, viewport render Scene and Scene.001

Details

Type
Bug

Event Timeline

Philipp Oeser (lichtwerk) triaged this task as Normal priority.

Can confirm the behaviour, but not sure this would be considered a bug.

Random is based on cycles internal object id. If scenes differ in regards to their objects, then these ids are just not garuanteed to be the same.

@Brecht Van Lommel (brecht), @Sergey Sharybin (sergey) : mind sharing your thoughts?

I always thought that it takes into account only objects which share same material. If it's a known feature of render engine, then maybe it is worth a note in manual?