In the games I make I always track positions at a subpixel level and then I can choose whether or not to draw things with that accuracy depending on my needs. I

In the games I make I always track positions at a subpixel level and then I can choose whether or not to draw things with that accuracy depending on my needs. I might want a shape to move more smoothly at a sub-pixel level, or round things to whole pixels. Both ways are useful for different reasons or in different situations.