D4989: more aggressively repaint when the shadow changes

[Martin Gräßlin]

graesslin added inline comments.

INLINE COMMENTS

> mart wrote in toplevel.cpp:325
> you mean something like this?

yeah, though we kind of already had this. We have the old shadow region in the dirtyRect (line 326)  and in line 332 we combine it with the new shadow rect.

Your change only results in repainting the complete window and I don't really understand why that is needed.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D4989

To: mart, #plasma, graesslin
Cc: anthonyfieroni, plasma-devel, kwin, #kwin, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol
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