I use OpenGL and SDL for my games and I plan on porting to Linux/Mac OS X so DirectInput is out of the question for me.

Though I can see 1 or 2 games which would make FFB neat to add to. [size=9px](With the option to turn it off of course as some may not like it.)[/size]

But if there is not a non-DirectX solution then I'll just have to forget about it.