Assertion failed: !status && "vkDeferredOperationJoinKHR", file ../src-wine/dlls/winevulkan/loader_thunks.c, line 3128

[Andrew Falcon]

System Specs:
CPU - 5900X
GPU - 6800XT w/AMDVLK v2023.Q2.3 driver
OS - Fedora 38 KDE

In Proton 8, some games are hitting the assertion in winevulkan:
Assertion failed: !status && "vkDeferredOperationJoinKHR", file ../src-wine/dlls/winevulkan/loader_thunks.c, line 3128 which causes the game to abruptly quit.

Note: In order to get the VK call that causes the assert, you need to use Proton 8 Experimental [Bleeding Edge], otherwise you will just get a generic assert message.

In my case, Doom Eternal and Portal RTX (TraceRay mode) will hit the assertion consistently. For Doom Eternal, I can fallback to Proton 7 and AMDVLK works fine. For PortalRTX I can only fallback to RayQuery mode for it to work.

I'm not really sure where the regression lies with Proton 8 or AMDVLK. Speaking with Proton devs, they say that earlier versions of Proton were ignoring these fails but with Proton 8 they are no longer ignoring them hence why they are appearing now. They are pointing to AMDVLK as the cause. And FWIW, MESA's RADV driver implements vkDeferredOperationJoinKHR as a nop and it doesn't hit the assert.

*To configure specifc RT modes for PortalRTX the following options in the rtx.conf file in the game directory need to be modified:

RayQuery[CS]
rtx.renderPassGBufferRaytraceMode = 0
rtx.renderPassIntegrateIndirectRaytraceMode = 0

RayQuery[RGS]
rtx.renderPassGBufferRaytraceMode = 1
rtx.renderPassIntegrateIndirectRaytraceMode = 1

TraceRay[RGS]
rtx.renderPassGBufferRaytraceMode = 2
rtx.renderPassIntegrateIndirectRaytraceMode = 2

[Andrew Falcon]

Closing this issue, the cause of the issue is Proton 8.

[JianRong JIN]

Refer to ValveSoftware/Proton#3773 (comment)

[Andrew Falcon]

Yes, I am aware its a proton issue, that is why I closed the issue 5 days ago.