How to configure for Vulkan?

nikitablack · wrote on 25 Apr 2018, 10:04

You need to run configure and pass arguments, for example:

configure -I $VULKAN_SDK/include -L $VULKAN_SDK/lib -v -feature-vulkan

JoseLMO · wrote on 26 Apr 2018, 16:26

The bash said:

ERROR: Feature 'vulkan' was enabled, but the pre-condition 'libs.vulkan' failed.

And $VULKAN_SDK is correct folder.

Tadinu · 4 Nov 2020, 13:33

@SGaist Since I tried to run the example project Hello Vulkan Cubes but it just signaled this error:

Failed to load vulkan: Cannot load library vulkan: (vulkan: cannot open shared object file: No such file or directory)
initInstance: No Vulkan library available
Failed to create platform Vulkan instance
Failed to create Vulkan instance: 0

Regarding the latest status of Vulkan feature supporting in the prebuilt version for Linux, do we have it already enabled for Qt 5.15?

Thank you.

SGaist · wrote on 28 Oct 2020, 20:45

From your error message do you have the Vulcan dependencies installed on your system ?

Tadinu · wrote on 29 Oct 2020, 05:43

Yeap, this is my vulkaninfo command output and I also have VULKAN_SDK set in QtCreator environment variables, thus I could build the example fine, but it just failed at runtime:
https://drive.google.com/file/d/1pd9AGdC88KiN03e7bZzonkifd2jsRlZx/view?usp=sharing
This is my graphics card info:

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 455.26.02    Driver Version: 455.26.02    CUDA Version: 11.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  GeForce RTX 208...  Off  | 00000000:01:00.0  On |                  N/A |
| 35%   32C    P8    24W / 260W |   1209MiB / 11016MiB |      6%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      2256      G   /usr/lib/xorg/Xorg                568MiB |
|    0   N/A  N/A      2579      G   /usr/bin/gnome-shell              155MiB |
|    0   N/A  N/A      3404      G   ...AAAAAAAAA= --shared-files       88MiB |
|    0   N/A  N/A      3553      G   ...AAAAAAAAA= --shared-files      390MiB |
|    0   N/A  N/A      5623      G   ...s/QtCreator/bin/qtcreator        3MiB |
+-----------------------------------------------------------------------------+

SGaist · wrote on 29 Oct 2020, 18:03

What did you install on your system for the Vulkan part ?

Tadinu · wrote on 31 Oct 2020, 13:21

I just have the Vulkan SDK in a local folder and install this NVIDIA driver Linux 455.26.02, which supports VK_KHR_ray_tracing extension from this link:
https://developer.nvidia.com/vulkan-driver

SGaist · wrote on 31 Oct 2020, 14:45

It would be nice to have more details about the SDK like the version you have, the way you got it and installed it, etc.

Tadinu · wrote on 3 Nov 2020, 05:28

Yeah, so my Vulkan SDK version is 1.2.154.0 from their official page:
https://vulkan.lunarg.com/sdk/home#linux

I just extracted to a folder then set VULKAN_SDK to its path.
I actually tried with two of my latest current Linux NVIDIA driver as the proprietary 455 and the Beta one 455.26.2.

So I doubt that in order to run Vulkan examples by Qt, should I install the Vulkan using sudo apt install vulkan-sdk, which I might dread will conflict with the NVIDIA driver. I remember having some bad experience with it.

Pablo J. Rogina · wrote on 4 Nov 2020, 13:33

@Tadinu said in How to configure for Vulkan?:

Failed to load vulkan: Cannot load library vulkan: (vulkan: cannot open shared object file: No such file or directory)

Have you try setting updating LD_LIBRARY_PATH variable to reflect the proper location of the Vulkan library(ies)?

Tadinu · 11 Aug 2020, 12:30

Yeah, I would normally avoid updating LD_LIBRARY_PATH. So I added this to ~/QT/Examples/Qt-5.15.1/vulkan/hellovulkancubes/hellovulkancubes.pro file:

LIBS += -lvulkan -L<PATH_TO_VULKAN_SDK>/1.2.154.0/x86_64/lib

And it works!

Thanks for your advice!

JackLiu · wrote on 23 Jan 2024, 15:23

I found an interesting piece of information that

-recheck-all

is needed if it has been configured before.