Just wanted to share with you that I just tried Witcher with 2.21 staging with the just released dxvk 0.31 and so far very smooth experience. I just walked around for a minute because I don't have much time to play but seemed like more than 20fps even on max details (hairworks off, doesn't work). Maybe the time to stop living and start playing TW3 has come... So go grab dxvk and have fun! :)

Linux Mint Cinnamon, 4.13.0-36-generic, AMD A8-7600, GTX 960 2GB binary 390.25

OK, trying to build dxvk. Fails like this:

[1/118] Compiling C++ object 'src/util/util@sta/log_log_debug.cpp.obj'.
FAILED: src/util/util@sta/log_log_debug.cpp.obj 
/usr/bin/x86_64-w64-mingw32-g++ -Og -gdwarf-2 -Isrc/util/util@sta -Isrc/util -I../src/util -I.././include -fdiagnostics-color=always -pipe -Wall -Winvalid-pch -Wnon-virtual-dtor -std=c++1z -O3 -MMD -MQ 'src/util/util@sta/log_log_debug.cpp.obj' -MF 'src/util/util@sta/log_log_debug.cpp.obj.d' -o 'src/util/util@sta/log_log_debug.cpp.obj' -c ../src/util/log/log_debug.cpp
In file included from ../src/util/log/log_debug.h:5:0,
                 from ../src/util/log/log_debug.cpp:1:
../src/util/log/log.h:49:10: error: ‘mutex’ in namespace ‘std’ does not name a type
     std::mutex    m_mutex;
          ^~~~~

UPDATE:

Found this detail: https://github.com/doitsujin/dxvk#troubleshooting
Changing default mingw compilers with update-alternatives helps.

Is wine-vulkan only using Vulkan 1.0.51 loader? Instructions say to set that in json.

OK, I installed SDK inside the prefix, configured the json, and run setup for dxvk which created symlinks. Now running d3d11-triangle.exe using Mesa master wnd wine-vulkan, produces:

err:   DxvkInstance::getExtensions: Extension VK_KHR_surface not supported
Failed to create DXGI factory

vulkaninfo.exe from inside Wine produces:

0009:err:vulkan:wine_vk_init Failed to load Wine graphics driver supporting Vulkan.
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23ec50 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x78e10 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23ec4c L"\3830\0008" 0x00000000: stub
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23ece0 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x78de0 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23ecdc L"\5030\0007" 0x00000000: stub
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23e810 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x83830 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23e80c L"\5030\0007" 0x00000000: stub
0009:err:vulkan:wine_vk_init Failed to load Wine graphics driver supporting Vulkan.
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23ec50 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x78e10 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23ec4c L"\3830\0008" 0x00000000: stub
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23ed40 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x78ed0 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23ed3c L"\5030\0007" 0x00000000: stub
ERROR: [Loader Message] Code 0 : loaderGetDeviceRegistryFiles: failed to open DevNode 0P
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23ed40 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x76750 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23ed3c L"\02f0\0001" 0x00000000: stub
ERROR: [Loader Message] Code 0 : loaderGetDeviceRegistryFiles: failed to open DevNode ≡
0009:fixme:setupapi:CM_Get_Device_ID_List_SizeW 0x23e920 L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x00000300: stub
0009:fixme:setupapi:CM_Get_Device_ID_ListW L"{4d36e968-e325-11ce-bfc1-08002be10318}" 0x7b1c0 0 0x00000300: stub
0009:fixme:setupapi:CM_Locate_DevNodeW 0x23e91c L"\0110\0001" 0x00000000: stub
ERROR: [Loader Message] Code 0 : loaderGetDeviceRegistr

May be that's because I installed the latest SDK for 1.1. Should I use one for 1.0.x? I expected it to keep backwards compatibility.

Nope, exactly same story happens with older SDK (1.0.68):

err:   DxvkInstance::getExtensions: Extension VK_KHR_surface not supported

Or with vulkaninfo.exe:

ERROR: [loader] Code 0 : Failed to open dynamic library "c:\windows\system32\winevulkan.dll" with error 1114
Cannot create Vulkan instance.
C:\VulkanSDKBuild\workspace\LoaderAndValidationLayers\demos\vulkaninfo.c:808: failed with VK_ERROR_INCOMPATIBLE_DRIVER

Quite messy.

@Shmerl Does drive_c/windows/system32/winevulkan.dll exist at all in your wine prefix? If not, you probably forgot to run autoconf while building it.

It exists, but I didn't run autoconf indeed. Trying now with it.

Nope, doesn't make a difference. Same result really. I was building wine-vulkan inside a VM if it affects anything. May be it needs matching Vulkan to be installed to configure correctly?

Quoting: GuestWitcher 3 + DXVK 0.31
Imgur Album

How did you build / install wine-vulkan? The process is quite messy, I might just wait until upstream Wine will have proper Vulkan support.

Is that correct? HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432NodeKhronos\Vulkan\Drivers
Looks like it should be HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Khronos\Vulkan\Drivers

Also, using "C:\Windows\winevulkan.json" doesn't work with regedit. You need to use "C:\\Windows\\winevulkan.json"

Anyway, I built wine-vulkan as above, but no dice.