Anti-aliasing kills the FPS with Intel integrated graphics

Not sure if it's a pref bug, but just in case...

  • What is your operating system?

Linux Debian 12.0

Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] (rev 01)

  • What version of OpenMW are you using? If you used a bleeding edge build, state the exact revision used.

Dev build baa67893

Also with 0.48 RC11

  • What version of Morrowind are you using (i.e. retail CD or Steam)? What addons (Tribunal, Bloodmoon) do you have installed? What language is your Morrowind install?

CD with Tribunal and Bloodmoon

  • Do you use any mods? If so, does the problem also occur in a clean vanilla install without any mods?

Same problem on clean install.

  • What are the exact steps to reproduce the problem?
  • What did you expect to happen? What happened instead?

Run the launcher, set anti-aliasing to 8, run the game, go to Balmora outdoor, I get 20 FPS

Again with value 0: I get 50 FPS

With my mods or without any mod, it's always approx. 2.5 times the FPS without AA. And it improves as I progressively reduce the AA value.

I tried many other performance tweaks, and most others barely affect FPS count compared to AA.

  • Are there any error messages in your openmw.log file? If you're not an OpenMW team member, it's best to upload it.

No error.