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Valve contractor Joshua Ashton, who originally created the Direct3D9 to Vulkan layer D9VK which was eventually merged with DXVK, is now working to help VKD3D-Proton for Direct3D 12 to Vulkan.

If you didn't understand much of that: DXVK and VKD3D-Proton translate Windows games' Direct3D calls into Vulkan so that they can work on Linux with the Wine compatibility layer which is all part of Steam Play Proton.

Ashton wrote up a blog post detailing all the work they've been doing, which has recently involved getting the APITrace tool hooked up and working with Direct3D 12. Ashton mentions that the work "may be useful for people who are developing games or working on implementing a D3D12 driver or translation layer for debugging purposes" and that the primary use here is to aid the VKD3D-Proton translation layer.

Speaking to Ashton myself last night to clear up some things including this being funded by Valve, Ashton mentioned how "debugging games these days is hard because of anti cheat and drm" and that this will enable developers to record the API calls. This means those calls can be debugged, enabling them to inspect everything and then play it back with VKD3D-Proton to see where it crashes so they can fix the Vulkan translation.

The blog post mentions that so far they've seen success with some big games like Ghostrunner, Resident Evil 2, Horizon Zero Dawn, Assassin's Creed Valhalla, Control working with the APITrace work.

Full blog post can be seen here for those interested.

Article taken from GamingOnLinux.com.
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7 comments

rustybroomhandle 18 Nov, 2020
Wait, so Asscreed Valhalla works already with VKD3D-Proton? Been looking around and seeing people not having much success with that.
Trias 18 Nov, 2020
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Quoting: rustybroomhandleWait, so Asscreed Valhalla works already with VKD3D-Proton? Been looking around and seeing people not having much success with that.

He may mean that debugging of those games now working, not all those games themselves (yet).
rustybroomhandle 18 Nov, 2020
Quoting: Trias
Quoting: rustybroomhandleWait, so Asscreed Valhalla works already with VKD3D-Proton? Been looking around and seeing people not having much success with that.

He may mean that debugging of those games now working, not all those games themselves (yet).

There is a screenshot of it running on the linked blog post.
CatKiller 18 Nov, 2020
For those that aren't aware, it was also Joshua Ashton that did the work to move Quake 2 RTX to the vendor-neutral Vulkan ray tracing extension, for when Khronos gets round to finalising it. Busy, busy, busy.
Comandante Ñoñardo 18 Nov, 2020
Joshua Ashton and Philip Rebohle deserve an street or a plaza with their names....

Their work is revolutionary... and realistic.
rustybroomhandle 18 Nov, 2020
Quoting: rustybroomhandle
Quoting: Trias
Quoting: rustybroomhandleWait, so Asscreed Valhalla works already with VKD3D-Proton? Been looking around and seeing people not having much success with that.

He may mean that debugging of those games now working, not all those games themselves (yet).

There is a screenshot of it running on the linked blog post.

Ah wait, all the screenshots in that post is vkd3d-proton running on windows 10.


Last edited by rustybroomhandle on 18 November 2020 at 7:35 pm UTC
massatt212 26 Nov, 2020
How are shaders compiling now AMD and Nvidia
And Easy Anti-Cheat
Any updates on those?
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