Preference option for disabling hierarchy icons

[zsoik]

With the new 2.6.3 hierarchy icons I observed funny frame time hiccups in the profiler when a GraphOwner was disabled. I could trace it back to enforce repainting the hierarchy window as a consequence of that (which internally does a FindObjectsOfType<> which is the actual culprit for the slowdown, but – that’s unity internals so… yeah). I then figured the hierarchy window is redraw each time a graph owner changes state, so maybe there can be a preference option just like for all the other stuff (node icons, comment display, …) for showing/hiding the icons in the hierarchy? Then the expensive repaint wouldn’t have to be called anymore.

(I guess this only happens when you have tons of game objects/components instances, because only then FindObjectsOfType<> will begin to slow down very dramatically)

[Gavalakis]

Hey,

Yes, the hierarchy icons coloring/symbols based on graph state was a user request that I found interesting at the time and implemented right away, but I only realized the editor performance impact it has after the fact :/
I will most probably completely remove this “state visualization” in the next release though, to avoid confusion of editor performance vs application performance.

Thanks!

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