Here's the branch:
https://github.com/nikolaykasyanov/open ... acos-hidpi
There're two things the branch does at the moment:
- Asks SDL to create High DPI window (SDL_WINDOW_ALLOW_HIGHDPI)
- Calculates & propagates scale factor (basically pixels/virtual points ratio, always an integral number on Retina displays) to respective subsystems (i.e. MyGUI, for example GUI scale will be 2.0 on Retina display automatically)
I'd also appreciate any info about current state of High DPI support in OpenMW on other OSes. Feel free to ask anything too.
Have a nice weekend!