RESOLVED WONTFIX 79251
[chromium] Improve rubber-band overhang painting under composited path 
https://bugs.webkit.org/show_bug.cgi?id=79251
Summary [chromium] Improve rubber-band overhang painting under composited path
asvitkine
Reported 2012-02-22 09:37:08 PST
Per discussion on: https://bugs.webkit.org/show_bug.cgi?id=78008 Currently, in the composited path, rubber-band overhang painting is done by having a single layer that gets conditionally enabled and its content updated whenever the overhang is visited. This is not optimal since it involves a re-upload of the whole layer every frame. The way it's done for !CHROMIUM Mac, is that the ScrollbarTheme sets up the overhang area layer to just be a tiled pattern and the shadow layer to be some sort of magic path-based layer that are behind the content layers. We should do something similar.
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asvitkine
Comment 1 2012-02-22 09:38:53 PST
Above should say "whenever the overhang is *visible*."
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