[Mesa-dev] nir/algebraic: Generalize an optimization - RADV / DXVK 0.93+0.94 regression with LS2019

[Dieter Nützel]

Sorry guys,

but my son got a RADV + DXVK 0.93 and 0.94 (D3D11) regression running 
brand new LS2019 (https://www.farming-simulator.com/?lang=en&country=us) 
on our Polaris 20. All heaven textures are gone and some others are 
wrong.

git bisect bad 445867c80d
git bisect good e4f9a37ace

/opt/mesa> git bisect good
615cc26b97ad520b90a8d3b3f9bdaa49c78dfda5 is the first bad commit
commit 615cc26b97ad520b90a8d3b3f9bdaa49c78dfda5
Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Thu Dec 6 12:56:33 2018 -0600

     nir/algebraic: Generalize an optimization

     This just makes it nicely scale across bit sizes.

     Reviewed-by: Eric Anholt <eric at anholt.net>
     Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
     Tested-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>

:040000 040000 ced4299ecdd6d76755839c9a0af11417e5f4973a 
321e0c0e1c985c49c4e0b37f766c4a68c4ca145f M src

But git revert 615cc26b97 alone do NOT help.

Have to file a ticket after some sleep...;-)

Greetings,
Dieter