Yes, I should have remarked this more clearly... sorry (I did say that software is the better choice for simpler scalings in this thread, though).

An optimized assembly 2x scaler is way faster than the SGX. The issue here is that the SGX takes a _constant_ time, whatever the surface area or scaling factor is (due to the way the rasterizer works). The 2x assembly scaler is really fast (at least the DrNokSnes one), but when you start enlarging the scaling factor, gets progressively slower (and when you use a non power of 2 scaling factor, gets much, much slower). So there's a point where the SGX one will be faster than a assembly one (or a slow enough CPU frequency!).

And of course doing any kind of antialiasing means that the assembly one will be much slower. Note that I don't remember right now if HAA does nearest or linear, but I do remember it's hardcoded in hildon-desktop.

I'll fix this, I'm just trying to understand the entire process. It seems it defullscreens "silently" after a focus out, and fullscreen 1500 milliseconds after a focus in. Next version will imitate this logic and take care of putting the actors in the appropriate window.