+Finally, a word of advice: Even the fastest scaler can never be as fast as not
+scaling. If you can do less work, or move it to a time where it is less user
+visible, do that no matter how you scale your pictures. In particular, cache
+your downscaled pictures if you can, preferrably ahead of time. If you cannot
+predict in advance exactly what size (or sizes) you'll need, consider making
+mipmaps (ie. one image of half the resolution each way, another one of a quarter
+the resolution each way etc., down to a reasonable size) and scaling from them
+instead. It will be much faster (primarily due to less loading time) and the
+difference in quality is nearly impossible to detect, at least in my tests.
+