Thanks for trying this out.
Yeah, so I use GameZero/SDL2 on Windows with a HiDPI display, and it works correctly. It even works with fractional scaling (my monitors are set to 175% and 150% scaling).
SO suggests the answer is to set SDL_WINDOW_ALLOW_HIGHDPI when creating windows, which we do use here , and that seems to work correctly on windows.
We’re have reports about this earlier, I’ve not had any luck figuring this out.