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Comment by WhyNotHugo

12 hours ago

PSR (panel self-refresh) lets you send a single frame from software and tell the display to keep using that.

You don’t need to render 60 times the same frame in software just to keep that visible on screen.

5 comments

WhyNotHugo

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TeMPOraL  11 hours ago

How often is that used? Is there a way to check?

With the amount of bullshit animations all OSes come with these days, enabled by default, and most applications being webapp with their own secondary layer of animations, and with the typical developer's near-zero familiarity with how floating point numbers behave, I imagine there's nearly always some animation somewhere, almost but not quite eased to a stop, that's making subtle color changes across some chunk of the screen - not enough to notice, enough to change some pixel values several times per second.

I wonder what existing mitigations are at play to prevent redisplay churn? It probably wouldn't matter on Windows today, but will matter with those low-refresh-rate screens.

  • 01HNNWZ0MV43FF  6 hours ago

    Android has a debug tool that flashes colors when any composed layer changes. It's probably an easy optimization for them to not re-render when nothing changes.

  • throwaway2037  9 hours ago

    Normally, your posts are very coherent, but this one flies on the rails. (Half joking: Did someone hack your account!?) I don't understand your rant here:

        > With the amount of bullshit animations all OSes come with these days, enabled by default, and most applications being webapp with their own secondary layer of animations, and with the typical developer's near-zero familiarity with how floating point numbers behave

    I use KDE/GNU/Linux, and I don't see a lot of unnecessary animations. Even at work where I use Win11, it seems fine. "[M]ost applications being webapp": This is a pretty wild claim. Again, I don't think any apps that I use on Linux are webapps, and most at work (on Win11) are not.