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Testing new Mesa ACO shader compiler for AMD
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lejimster 30 Jul, 2019
FYI, the ACO compiler has just had a major update. It can now handle Vertex shaders, Plagman just updated us on twitter:

Looking good guys :D
Shmerl 31 Jul, 2019
ACO is again ahead for TW3 (built latest master branch):


Shmerl 1 Aug, 2019
I didn't test it, but developers write it's mostly beneficial for lower end hardware. With high end CPU you probably won't notice big gains.
massatt212 2 Sep, 2019
Does anyone know how to get 32bit Mesa ACO Working on Ubuntu 19.04, only 64bit seems to work.
Shmerl 3 Sep, 2019
Never tried it. Now after switching to Navi card, I'll wait with ACO testing until it will catch up with support.
Laboratoryo_ni_Neil 22 Mar, 2020
Here are some of my benchmarks using ACO. No graphics corruption was observed during benchmarking.

Radeon RX 580 in 2020 - 4K and 1800p gaming benchmarks

Radeon RX 550 in 2020 - 1080p and 900p gaming benchmarks

Last edited by Laboratoryo_ni_Neil on 22 March 2020 at 3:40 am UTC
MayeulC 22 Mar, 2020
Quoting: ShmerlACO is again ahead for TW3 (built latest master branch):
Spoiler, click me



Colors seems to be more saturated with AC0 in these screenshots. Unsure if that's a screenshot artifact? (I also wanted to compare quality, but jpeg makes that difficult, and there seems to be TAA or motion blur at play?)
Shmerl 22 Mar, 2020
I don't notice any color difference in the actual tests.

Last edited by Shmerl on 22 March 2020 at 8:01 pm UTC
Laboratoryo_ni_Neil 26 Mar, 2020
Anyone here using Radeon Navi series? How is the stability on Mesa 19.3.5 + ACO?
Shmerl 26 Mar, 2020
Use 20.0.2 (or Mesa master for games specifically). I don't recommend 19.3.5 for gaming. ACO isn't stable there yet.

Last edited by Shmerl on 26 March 2020 at 4:07 am UTC
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