WIP - Windows high-DPI support

[Daniel_Gibson]

We also had that problem in another game using a totally different
engine (C4), not using SDL. (We fixed it by calling
SetProcessDPIAware(ness), similar to Erics snippet here:

SDL_GetDesktopDisplayMode resolution reported in Windows 10 when using app scaling

I think you have to set WINVER to the Windows 8.1 constant to call SetProcessDpiAwareness directly, but then the app will be windows 8.1+ only. Here’s a snippet to load them at runtime: typedef enum PROCESS_DPI_AWARENESS { PROCESS_DPI_UNAWARE = 0, PROCESS_SYSTEM_DPI_AWARE = 1, PROCESS_PER_MONITOR_DPI_AWARE = 2 } PROCESS_DPI_AWARENESS; void* userDLL; BOOL(WINAPI *SetProcessDPIAware)(void); // Vista and later void* shcoreDLL; HRESULT(WINAPI *SetProcessDpiAwareness)(PROCESS_DPI_AWARE…

)

Maybe the common denominator is OpenGL?

Cheers,
Daniel