Quote Originally Posted by Lifepower
What do you mean by interpolation specifically? You can do texture interpolation, but I'm not sure that's what you are asking for...
For example, in SNES they use like Kreed's Super2x Sal .

Here is a screen shot without interpolation:
http://www.aotaonline.com/nointerpolation.gif

And here is one with it:
http://www.aotaonline.com/interpolation.gif

I saw something like it when resizing DX surface (image gets stretched), but it is not quite of what I am looking for.