Showing off a multitude of *corner cases* in niri.
https://files.mastodon.online/media_attachments/files/112/383/776/094/836/993/original/69298b1914ad3325.png
Another tricky feature, rounded corners! Took several days, but I believe I've got a pretty complete implementation.
You (manually) set the window corner radius and whether to force-clip the window. You can set radius per-corner to match GTK 3 apps. It works correctly with subsurfaces, blocked-out windows, transparency, gradient borders, resize and other animations.
Optimization-wise, opaque regions and even overlay plane unredirection work where possible!
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