I cannot do anything without an apitrace I am afraid.
I tried for 2+ hours to have an apitrace but with no success, I really don't know what's the issue with this game or where I do something wrong :/
I can't get one... I've tried everything but the wrapper does nothing or it's ignored. I even tried with a GOG version found somewhere but with the same result... If someone knows how to get one, please upload it, it would be a great help!
Just an uneducated guess, maybe the game load d3d9.dll from the windows directory directly.
You can check that by looking at the log if you put the wrapper next to the .exe, if this is still the only place that d3d9.dll shows up then it doesn't load the wrapper.
19933.741:010c:0110:trace:loaddll:build_module Loaded L"C:\\windows\\system32\\d3d9.dll" at 62440000: native
If that's the case try putting the apitrace wrapper in windows/syswow64 in the prefix and and use APITRACE_FORCE_MODULE_PATH to point towards the directory you moved the original dll to.
No luck, or I'm not doing it right.
I recorded an apitrace (using wined3d) that shows the problem:
https://drive.google.com/file/d/1Q0qLpyR_fbjD1P6JCRHS_BZCanGjg2Zv/view?usp=sharing
@Oschowa Thanks!
But how did you manage to do it? I'm very curious.
What DadSchoorse guessed was right, the game only loads d3d9.dll from the windows directory, so i copied wined3d's d3d9.dll form syswow64 to /tmp/wined3d, dumped the apitrace d3d9.dll into syswow64 and ran the game with APITRACE_FORCE_MODULE_PATH="/tmp/wined3d" WINEDLLOVERRIDES="d3d9=n,b" wine game.exe.
This needs to be done manually and not from steam or using the proton run script because otherwise your modification to the prefix' syswow64 will be overwritten.
Tested and everything is fixed, thanks! :)
proton experimentalx1 2021-05WINEDLLOVERRIDES="d3d9=n,b"x1 2021-06d3d9.dllx2 2021-06
There are many issues with DXVK and Second Sight.
First, the HUD and the subtitles are missing:
WINED3D:

DXVK:

Before the main menu, there is a screen with the title of the game, it's missing with DXVK:
WINED3D:

DXVK:

During the cutscene of the first level, there are a transition effect which is missing with DXVK. Also notice that the 2 videos begin at the same time, so the black screen with the word "ISOLEMENT" is missing with DXVK.
WINED3D:
https://streamable.com/lsq57d
DXVK:
https://streamable.com/xaoip4
System information
Apitrace file(s)
I can't get one... I've tried everything but the wrapper does nothing or it's ignored. I even tried with a GOG version found somewhere but with the same result... If someone knows how to get one, please upload it, it would be a great help!
Log files
steam-11550_dxvk.log
steam-11550_wined3d.log