The latest mesa-21.2.0_rc2 and any version of (at least) sway/wlroots (as far as I can tell) seem to be incompatible in some way that makes rendering extremely slow and laggy. No such issues with mesa-21.0.3.
Is the new title reflecting some sort of "who's to blame" analysis? How so? Just curious.
As by #803860 , this is an intel, too (forgot to mention that)!
Please share your emerge --info output. In defense of CK, I would say it's somewhat of a convention to first list the broken user-facing package, then the version of supporting lib known to break it. Don't take personal offense by it.
This is not a sway bug, but a mesa bug. The renderer is falling back to llvmpipe (software rendering) because intel blacklisted gen8 and newer GPU's from using the i965 driver in the new mesa RC's. You will need to add iris to your VIDEO_CARDS and rebuild mesa and it should work as it did previously (probably better now as the iris driver is supposed to be a ton faster).
Yes, thank you, VIDEO_CARDS="intel i965 iris" does the trick, I was waiting for iris to work for a long time, now it surprised me like this! :) Feel free to close NOTABUG as far as I'm concerned?
I do think we need to do something to help either raise awareness about switching to iris, or help set some better defaults on mesa... but probably outside the scope of this bug report. Glad you're up and running!
