Hello @Draluy, this issue should also be mentioned to the game's dev(s) if it hasn't been already.
Also, please copy your system information from Steam (Steam -> Help -> System Information) and put it in a gist, then include a link to the gist in this issue report.
Done
If possible, please check if you've encountered https://gitlab.freedesktop.org/mesa/mesa/issues/2072 by downgrading to an older version of mesa or applying https://gitlab.freedesktop.org/mesa/mesa/commit/f93bb903020bac21a36e240b2c19a4733c2405ee to your current mesa build.
Thank you for your analysis, it does look like that mesa bug (checked on XCOM2 and I can reproduce the same glitch in menus). I will try to downgrade as soon as I can and post the results.
I am also able to reproduce this. Rebuilding mesa 19.2.3 with that patch now to verify it fixes it.
Edit: Sorry I meant 19.2.3, not 18.2.3
After a brief "validation" session, I can confirm that that patch sorted the problem, thank you!
https://gist.github.com/DataDrake/d2b6af72d584ef6507ad17c9197140d3
Thank you @DataDrake for your time.
I'm not able to test anything for the time being, so @kisak-valve if you want to close this bug its fine, as this doesn't seem related to steam as I first thought.
Thanks for your kind help.
Thanks for testing @DataDrake, closing as fixed in mesa 19.2.4 (released moments ago).
Nothing extracted yet.
Your system information
Detailed system info: https://gist.github.com/Draluy/4f3f43988f7217e48d3171b2b14a0ba9
Please describe your issue in as much detail as possible:
Loading any save in Alien Isolation results in a garbled screen. Sounds play fine and some polygons can be seen, but the game is totally unplayable now.
I'm guessing this is due to the most recent steam client update, as the game was working before, and no other software was updated on my computer.
Steps for reproducing this issue: