Vulkan Desktop Preview Cannot Find Graphics Driver

Development Platform & Builds Mobile
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1

Hi all,

I am trying to develop an Android game using Vulkan but I am having some trouble getting it to work. I followed the tutorial here (https://docs.unrealengine.com/latest/INT/Platforms/Android/VulkanMobileRenderer/). I was able to get the build onto my Nexus 5X and it ran just fine (although I don’t know how to prove it is using Vulkan). I was also able to get it running in the viewport:
Vulkan_PIE.png

However when I try to play in game in the Vulkan preview window I get the error below. It tells me that I need to update my graphics card driver and that it can’t find my current driver version. But I have the latest graphics driver and the version number is higher than the recommend version number. You can see that in the window behind the error.
79f5cfe33a149e1bbba50fe513b49f7b77e92bfa.jpeg
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Does anyone know why this is happening? **

P.S. As a side question does anyone know if I can prove that my phone is running Vulkan?

2

If you look in the logcat output tagged with UE4 you will see if it used Vulkan or not. Look for these messages:

Vulkan level: xx
Vulkan version: x.x.xx

Compiled with Vulkan support
Vulkan library detected, checking for available driver
Vulkan driver available, will use VulkanRHI

The dialog for Vulkan Preview are from the editor detecting a driver it doesn’t support. Look in Engine/Config/BaseHardware.ini under [GPU_NVIDIA] for the blacklist.

3

Sorry for the late response. I was able to confirm that my phone was using Vulkan with your method. Also 4.15 fixed the Vulkan preview for me.