* Micro-optimize icon smoothing subsystem, cutting down more than 50% of its init time (about .8s drop on local, more on prod) (#69741)
With atoms now being 50% of the init time instead of ~80%, I've decided to poke around other subsystems.
Unfortunately they're not straight forward at all and extremely boring. bitmask_smooth() in particular is just a big proc that is called ~60k times, so I made some adjustments to its macro to reduce ops.
I removed code that looped over two entire Z-levels to find things to smooth, added by e2dd404, at a time before the initialize system. This doesn't have huge gains since it just defers to the queue anyway, but it still shaved off 0.1-0.2s on local.
I removed update_appearance(~UPDATE_SMOOTHING) from something since the person who added it doesn't remember why and it doesn't appear to do anything. Lemon thinks it's something to do with emissives, but I tested with neon carpet and it seemed to work fine.
* Micro-optimize icon smoothing subsystem, cutting down more than 50% of its init time (about .8s drop on local, more on prod)
Co-authored-by: Mothblocks <35135081+Mothblocks@users.noreply.github.com>
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