Finally, after waiting for a few months NVIDIA has released a new mainline driver which includes Transform Feedback support. Previously, you had to use their special Vulkan beta driver to get it.
The "VK_EXT_transform_feedback" extension is one that was made especially for helping support translation layers from other 3D APIs. In our case, it helps DXVK plus Wine (and so Valve's Steam Play) with certain Windows games when run on Linux.
Additionally, this 415.22 release also adds in the fixed-up support for Unity games not working and solves a build failure with the Linux Kernel 4.20 release candidates.
If you're on Ubuntu, keep an eye on this PPA where it should land in the next few days for easy installation and updating. I just hope the PPA doesn't break Vulkan again when updating like it did recently. I've sent the maintainers of that PPA a message to notify them of the new release.
For other distributions, you likely already know where to look. For those installing manually, see the NVIDIA website.
Hat tip to bird_or_cage.
Article taken from GamingOnLinux.com.
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walther von stolzing 11 Dec 2018
I just upgraded to 415.22 and also noticed the reported Vulkan version drop from 1.1.92 to 1.1.84. Can anyone shed some light on the downgrade and how it affects Transform Feedback which, as I understand, came in 1.1.88?
415.18.* are Vulkan Beta drivers specifically meant for bleeding edge Vulkan support. The stable drivers are usually a bit further behind. But it shouldn't matter for transform feedback since dxvk is the only thing that uses it.
I just upgraded to 415.22 and also noticed the reported Vulkan version drop from 1.1.92 to 1.1.84. Can anyone shed some light on the downgrade and how it affects Transform Feedback which, as I understand, came in 1.1.88?
415.18.* are Vulkan Beta drivers specifically meant for bleeding edge Vulkan support. The stable drivers are usually a bit further behind.
Yes, next to that the extensions are not that tightly linked to the specification version. So it seems perfectly doable to bundle an extension that was finalized in a higher specification update with a driver that actually implements a lower specification version.
Comandante Ñoñardo 14 Dec 2018
It seems there was a bug in the 415.22 version that was fixed in the 415.23 version.
Fixed a build failure, "implicit declaration of function 'vm_insert_pfn'", when building the NVIDIA DRM kernel module for Linux kernel 4.20 release candidates.
VodkaChicken 14 Dec 2018
And, finally, the Nvidia 415.23 PPA has arrived!
It seems there was a bug in the 415.22 version that was fixed in the 415.23 version.
Fixed a build failure, "implicit declaration of function 'vm_insert_pfn'", when building the NVIDIA DRM kernel module for Linux kernel 4.20 release candidates.
Good to know, thanks :)
And, finally, the Nvidia 415.23 PPA has arrived!
It seems there was a bug in the 415.22 version that was fixed in the 415.23 version.
Fixed a build failure, "implicit declaration of function 'vm_insert_pfn'", when building the NVIDIA DRM kernel module for Linux kernel 4.20 release candidates.
From my understanding you will hit this bug only when running Linux kernel 4.20. This kernel isn't released yet, only release candidates are available, https://www.kernel.org/ [External Link]
michaldybczak 18 Dec 2018
From now on Witcher 3 is 100% compatible. All just works as it should.
Comandante Ñoñardo 20 Dec 2018
Added support for the following GPU:
TITAN RTX
Fixed a bug that could prevent display detection from working on displays connected to some notebook docking stations.
Fixed a bug which could cause VK_KHR_external_semaphore_fd operations to fail.
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