Some textures flickering in "The Saboteur" game (d3d9)

[rox4d]

There are some textures flickering in definite locations (in general game are playable).

Software information

Saboteur.exe (from GOG)

System information

• GPU: ACO POLARIS11 (LLVM 10.0.0)

• Driver: AMD RADV (mesa build from git)

• Wine version: wine-5.5 (Staging)
  

• DXVK version: v1.6-28-g3f4ffdf

Apitrace file(s)

• Put a link here
  https://drive.google.com/file/d/1EUDneqhTe60--Sojf_RmH5UR-DQS4bkj/view?usp=sharing

Log files

• d3d9.log:
  Saboteur_d3d9.log

• d3d11.log:

• dxgi.log:

[WinterSnowfall]

It looks good to me on DXVK v1.7, so you may want to recheck.

It could also be an issue with RADV.

[rox4d]

Looks so, just retested with dxvk v1.7-40-g5558460 - no changes here.

[rox4d]

WinterSnowfall - trace replaying fine for you? (it may be different with game, i suppose).

[WinterSnowfall]

WinterSnowfall - trace replaying fine for you? (it may be different with game, i suppose).

Yes, your trace also looks good on my GTX 1080. I see no flickering.

[CME42]

It's a precision error that only happens on AMD, both radv and amdvlk, d3d9.invariantPosition = True doesn't help.

[Blisto91]

Just a quick update that this is still present on mesa git. Looking into making a mesa issue if that can help.

Edit: Upstream mesa issue

[Blisto91]

Comment from the mesa issue

"This isn't a RADV issue as far as I can tell. It's caused by DXVK's D24 emulation using D32. AMD doesn't support D24, nvidia does. If I force DXVK to always use D32 I can reproduce the issue on nvidia."

[K0bin]

This is probably caused by the depth bias.

First it draws this with a depth bias:

This this mesh without one:

[K0bin]

Fixed by #3501