Where to begin. I'm a little surprised no one else seems to have run across this issue.
I'm playing on a current Archlinux with an Intel CPU and AMD RX560 graphics card,
mesa with no amdgpu-pro or other fancy stuff as drivers.
On newer nightly builds and RC19, my system would regularly freeze a few seconds into any mission. Almost instantly with smaa enabled.
FSO logs didn't show anything wrong, sound worked, could pause/unpause, but I couldn't even
switch to a tty to look what was wrong - my display was just completely frozen!
A hard reboot later I looked into journalctl and found a mass of red lines about a gpu fault 146 or 147,
pretty similar to these bug reports: https://bugs.freedesktop.org/show_bug.cgi?id=107152
Now by running builds one after another from working to not working,
I've found everything started with 3.8.1-20181107 and this commit:https://github.com/scp-fs2open/fs2open.github.com/commit/bb6c00a5164b89d3d51275992b25ea5313669282#diff-3a82fccc233b03c40a01981f092bc2a0
Cloned current master branch, commented out the two lines, built.
Was able to play through BtA:Operation Templar Mission 2 with smaa enabled (fxaa disabled), which had previously run 10 seconds tops.
So I'm assuming this "fixed" it for me.
Now to my questions: The commit comment is pretty cryptic ("Update gropengltnl.cpp"). What was this change meant to accomplish?
Has it caused problems anywhere else? What intended improvements am I foregoing? Is there another workaround known?
I mean, I'm happy everything seems to be working now, and I know AMDGPU isn't all that stable,
but I'd like to know WHY it works now, and understanding OpenGL is a little beyond a small-time hobbyist coder.
Thanks for any help!