[SOLVED] VkWrapper and Volk ?

[K.Wagrez]

Hello everyone,

We have migrated some projects to Unigine 2.19.1 and, while it works on our machines, we discovered on some of our build machines a crash durign the use of the build tool with this message:

 

Quote

08:08:09 ERROR:	VkWrapper::init(): can't initialized volk

It seems related to the Vulkan API wrapper I suppose. Was there some added dependencies we might need ?

(it could be our computer's drivers, but I'm surprised that launching the build too with Dx 12 would generate a Vulkan-related error)
 

Edited December 12, 2025 by K.Wagrez

[silent]

Hi Kevin,

This error may occur when GPU is not found or Vulkan runtime is missing. You can either update GPU drivers to the latest version or install Vulkan Runtime manually.

Thanks!

[K.Wagrez]

To give more details to @silent's answer, Unigine actually changed the internal API used to query GPU information, from DX11 to Vulkan, during the 2.18 to 2.19 transition. So our virtual machines without access to GPUs and with no drivers didn't have the necessary Vulkan dependencies to function.

Some of our other technologies actually ship Vulkan dependencies and SwiftShader, which is a CPU implementation for Vulkan. We will ponder if we use these.

For now we solved this by setting the build tool to not target any api (vapi to null in the configuration). This way Vulkan won't be used by the build tool to query information.

[Alexander.Komarov]

Hello,

I decided to test WPF integration in 2.20 and created a simple WPF project (net8.0), imported DLLs from SDK and followed WPF integration guide.

Yet the engine refuses to run: