Making wgpu use vulkan instead of dx12

[thunderstorm010]

How to make this? I've tried setting a dependency on wgpu-hal and setting the vulkan feature flag:

wgpu-hal = { version = "*", features = ["vulkan"] }

This results in:

error: process didn't exit successfully: `target\debug\app.exe` (exit code: 0xc000041d)

[hecrj]

Try setting the WGPU_BACKEND environment variable to vulkan when running your application.