(SDL2) Resolution settings don't save after restart

Windows 8.1.

I use 1280x800. However, every time I restart the game it defaults back to 640x400.

The cause appears to be pretty simple: When I check srb2dd, 1280x800 isn't an option there, while 640x400 is the highest "green" resolution.

Using autoexec.cfg to change the resolution doesn't work. However, deleting srb2dd.exe does, which is what I've done.

Press enter 3 times at the mode menu to save it.

The mode numbers in sdl2 are different from win32 (however they are the same across computers right now), so the same autoexec will not work for both builds.