He shows some ways to poke memory managed by the iphone driver and saturate the gpu using only ~20% of cpu instead of the 64% that you use with the conventional

He shows some ways to poke memory managed by the iphone driver and saturate the gpu using only ~20% of cpu instead of the 64% that you use with the conventional OpenGLES path. This necessarily introduces some fragility since you're essentially poking at magic locations in memory in a totally non-safe manner, but he seems to think the driver's internal structures are stable enough that this isn't a problem. In fact, if enough top quality games do this, then the stability might be a self-fulfilling prophecy, since messing with the driver internal structures' layout would break all the really nice looking games.