The DXVK version will also be written to the log files, you could check that. I'm not really keen in implementing anything that makes the HUD more complicated than necessary.
Is there a way to toggle HUD based on some keyboard key combination? That could be really useful and will cover the above use case as well. Or that will introduce too much overhead to catch keyboard events?
Is there a way to toggle HUD based on some keyboard key combination?
Just NO.
DXVK is a D3D11 translation layer and not something that should mess with the user's keyboard input. Hooking keyboard events is guaranteed to break something and create confusion, then the next thing people would ask for is being able to rebind the key to something else, and we end up with a bloated, broken solution that is a pain in the ass to maintain and has nothing to do with translating D3D11 to Vulkan in the first place.
This is a really terrible idea.
DXVK_HUDx1 2019-07
Would it be difficult to add a DXVK_HUD parameter to only show the HUD for say 30 seconds and then turn it off (or fade out)?
This might seem like an odd request but I have a number of different wine prefixes and I don't always know what version of DXVK they are running. Having the HUD on-screen for x seconds on startup would be a good way of keeping track of things without the distraction during gameplay.