d3d11: Chained Echoes: broken / flickering shadows

[the-burrito-triangle]

When using DXVK 2.7.1 with the GOG version of Chained Echos, the shadows are broken and flicker while moving around. When using WineD3D they render correctly.

DXVK:

WineD3D:

Software information

GOG version of Chained Echos

System information

• GPU: Iris Xe GT2 iGPU (Intel 1165G7 TigerLake-LP SoC)
• Driver: Mesa 25.2.6
• Wine version: 10.17
• DXVK version: 2.7.1

[the-burrito-triangle]

Just tested with the dxvk-master-e9ad90562cf4f785f33038bd27bc8c58f5222008 Github Actions artifact and the shadows are still broken.

[Blisto91]

Hi there and thank you for the issue. If able then try to get a apitrace of the game. Also attach log output.

[doitsujin]

Not seeing any issues when running the game locally, probably an Intel driver issue.

(or missing information on how to actually reproduce the problem)

[the-burrito-triangle]

@doitsujin, yeah it's probably an Intel issue... I'll try getting the logs that @Blisto91 requested, but other than using Mesa 25.2.6, Wine 10.17 and opening the game with overrides for d3d dll needed for DXVK, everything is set at their defaults. I don't have any weird / exotic setup going on here.

Should I open an issue with Mesa?

[the-burrito-triangle]

Update: I just tried playing with MESA_LOADER_DRIVER_OVERRIDE=zink with WineD3D, to test anv instead of iris and the game plays fine...

I don't think this is an Intel driver issue.

WineD3D with MESA_LOADER_DRIVER_OVERRIDE=zink:

[the-burrito-triangle]

I'll try updating to Wine 10.18 and see if that helps.

[doitsujin]

Updating wine isn't going to do anything. Keep in mind that running wined3d through zink isn't equivalent to running dxvk from a driver point of view (nevermind the fact that wined3d also has a Vulkan backend now that can be used with WINE_D3D_CONFIG="renderer=vulkan").

If this is somehow supposed to be an actual DXVK bug then I need instructions on what exactly to do in game and which settings / resolution to use in order to reproduce the issue. Just by running around on the ship after starting a new game doesn't trigger it here at least.

[the-burrito-triangle]

Okay. Using GALLIUM_HUD=fps shows that I'm using iris with WineD3D, so I don't think I'm using the Vulkan backend. My display is 3840x2160 / 60 Hz. All that is needed to trigger this issue for me is to launch the game and, without changing any in-game settings, start a new game and immediately the screen flickers from the shadowed areas seeming to work right and then going black. Sometimes I need to move the character for it to happen, but other times it flickers immediately upon starting a new game. I'll try getting an apitrace (I'll need to read up on how to do that first). I've attached the terminal output, if that helps.

terminal_log.txt

[the-burrito-triangle]

I'm having trouble getting the apitrace. The game immediately crashes after copying the d3d11, dxgi and dxgitrace DLLs from the apitrace-13.0-win64.7z into the game directory. I double checked that the game executable was 64bit with file ./"Chained Echoes.exe".

Attached is the Wine Debugger log.

crash_wine_debug.txt

crash_terminal_log.txt

Edit: I also tried launching apitrace.exe with wine apitrace.exe trace -a dxgi "Z:\mnt\ramdisk\chained_echoes\Chained Echoes.exe" but the game still crashes. I' not sure how to proceed here.