Just some thoughts here.
I am developing on a SGS with a screen res of 800x480...
I was thinking about blitting etc for graphical user interface (menu, hud, etc)
But how can I take different screen resolutions into account, eg 480x320...
edit: I got a loading texture 800x480 that I want to blit, but Texture says that 800 is unsupported width, how would I go about making loading texture?