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Improve scroll damage performance #4

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opened 2020年03月10日 18:21:19 +01:00 by dnkl · 0 comments
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Scroll damage is currently applied by memmoving the backing memory for the grid surface.

This is slow; a 1920x1080 surface is almost 8MB and many applications scroll a single line a time meaning we need to memmove almost all of those 8MB.

Note that re-rendering all the scrolled lines/cells is even slower so that is not an option.

Scroll damage is currently applied by memmoving the backing memory for the grid surface. This is slow; a 1920x1080 surface is almost 8MB and many applications scroll a single line a time meaning we need to memmove almost all of those 8MB. Note that re-rendering all the scrolled lines/cells is even slower so that is not an option.
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#2 1.3.0
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