Guys.

There is somebody here that has a quick and simple function to do a non-masked stretch_blit with antialiasing using allegro 4.2.2 or compatible? Don't need to be a ultra-fast implementation. A direct and simple implementation is enough.

I tried google but did not found one.
I tried to implement that myself, but the result was just a headache caused by the calculations programming.

(Note: This is for speedhack "Zoom! Zoom!" rule).

I'd recommend putting this anti-aliasing off for the last, in case you run out of time, the game is still "done", otherwise it's a nice touch.

If you are already done with the rest, go for it (not that this helps).

ooh, look up some 2xSAI type effects. I'm sure theres plenty implemented in Allegro 4. Also try SuperEagle and such.