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A comment on Show HN: React Native scrollable bottom sheet native animations gestures 60FPS. Parent comment

Re:Show HN: React Native scrollable bottom sheet native anim... by izacus on Saturday May 23, 2020 @03:40PM (#23285737)
Native framework (I'm familiar with Android) will just issue a translation coordinate change for the rendered view in this scroll. So there's no CPU <--> GPU transmission here because the view is already rendered in a texture and compositor will just move it a bit.

If web frameworks really reupload the whole view to GPU on each frame, it's no wonder all apps run like arse and burn battery.

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Re:Show HN: React Native scrollable bottom sheet native anim... by kall on Saturday May 23, 2020 @04:20PM (#23286033)
They don‘t, but you also can‘t prepare (and download) a whole list of (tens of) thousands of items, which is why you only do the parts that are going to be scrolled in next. Both react native and standard native apps do this, but standard native apps are much better at it.
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