Yeah, scrolling is easy if the entire bitmap you are scrolling exists in memory already. Then it's just a GPU thing, like the stuff in iOS 7. Scrolling is a l

Yeah, scrolling is easy if the entire bitmap you are scrolling exists in memory already. Then it's just a GPU thing, like the stuff in iOS 7. Scrolling is a lot harder when the content that is being scrolled to is being rendered in realtime, and when the scroll buffer is endless. Then it's not the GPU that is the problem, but the threading interaction.