Developer Joshua Ashton has just today released another build of D9VK code-named 'Frog Cookie', further polishing this D3D9 to Vulkan layer that was forked from DXVK.
Included in this release are multiple performance improvements, new fixed function support, multiple new D3D9 features added in and supported including one needed for Undertale, along with little something for Unreal Engine 3 titles so hopefully they should work better. Plenty of bugs were eaten up for this release too—something about Frogs?
You can find the full release notes here. Seriously exciting work!
As a reminder, D9VK is already available in the recent builds of Proton for Steam Play, although you do need to manually enable it. You can do this by adding "PROTON_USE_D9VK=1 %command%" as a launch option for each game. Now that a new release of D9VK is out, it's probable the next release of Proton will pull it in.
I'm looking forward to more testing of Rocket League with it as it was very impressive. If you've been testing D9VK, do let us know in the comments how you've been getting on and what titles you've enjoyed it with. I'm keen to hear your experiences with it.