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Comment by katastic | Hacker News Reader

I'm still waiting for someone to make a wayland compositor that compares to compiz. One super important feature I use every day is being able to invert a SINGLE window and not the entire screen.

For all the "omg it's slow" posts about compiz and x-server, it's fast enough to run on my netbook with a 5-watt processor.

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> One super important feature I use every day is being able to invert a SINGLE window and not the entire screen

While it's not per window inversion, for years I've been using the tiny (100KB) and wondrous xcalib package for screen inversion*

Should note that in order to get per screen inversion working I need to use Nvidia's Xinerama extension (without this extension inversion happens across all screens).

* bound to alt-o/alt-i hotkeys with xbindkeys. Here's the .xbindkeysrc if anyone's interested.

    # invert screen 0
    "xcalib -i -a -s 0"
      m:0x8 + c:32

    # invert screen 1
    "xcalib -i -a -s 1"
      m:0x8 + c:31

With xcalib I never got inversion working on all screens, only the first one (Intel graphics).

However, XRandR Invert Colors [1] has worked flawless with multi-monitor setups.

[1] https://github.com/zoltanp/xrandr-invert-colors

I haven't tried it recently but if kde has gotten better on Wayland it might offer this feature. You can set a compositing effect for this in x11 with it last I looked. But last time I tried kde Wayland it was far from stable.

Do you mean invert as in turn over 180 degrees? Sway 1.0 will be able to do that.

I believe they mean invert colors.

Ah. That seems like a pretty odd dealbreaker. It's possible in theory, I guess.

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