HiDPI doesn't appear to be handled by Cygwin/X11

[Hamish McIntyre-Bhatty]

Hi all,

Apologies if this has already been reported, but I couldn't find 
anything about this exact issue. I've recently found that HiDPI screens 
with scaling don't appear to be handled well by Cygwin/X11 - windows 
render very small in this configuration. By contrast, if I use the 
VcxSrv server with the same Cygwin application it displays at the size 
you'd expect.

I'd be happy to send screenshots or logs, or anything else I can send to 
help figure out why this is happening. I don't know much about X, other 
than that it's hard to maintain, so I appreciate this may not be an easy 
problem to fix.

Best,
Hamish