<html> <head> <base href="https://bugs.documentfoundation.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_UNCONFIRMED " title="UNCONFIRMED - UI: page scroll bar not functioning properly (dragging not responding; not properly positioned when scrolling) (painting issue; Skia)" href="https://bugs.documentfoundation.org/show_bug.cgi?id=137559#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_UNCONFIRMED " title="UNCONFIRMED - UI: page scroll bar not functioning properly (dragging not responding; not properly positioned when scrolling) (painting issue; Skia)" href="https://bugs.documentfoundation.org/show_bug.cgi?id=137559">bug 137559</a> from <a class="email" href="mailto:telesto@surfxs.nl" title="Telesto <telesto@surfxs.nl>"> Telesto</a> <pre>Created <a href="http://bugs.documentfoundation.org/attachment.cgi?id=167083" name="attach_167083" title="Bibisect log">attachment 167083</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=167083&action=edit" title="Bibisect log">[details]</a> Bibisect log Bisected to: author Luboš Luňák <<a href="mailto:l.lunak@collabora.com">l.lunak@collabora.com</a>> 2020-10-06 22:14:36 +0200 committer Luboš Luňák <<a href="mailto:l.lunak@collabora.com">l.lunak@collabora.com</a>> 2020-10-08 13:40:14 +0200 commit d18731f71c60cbb6c02cabb042004b1aa9454de8 (patch) tree 36870456fc84f62b2ab85a3bad1971641856cbda parent 47fda617fc4dad8273919227ca45ea3b8b61aea1 (diff) track dirty areas for Skia drawing Updates to the screen in raster mode aren't _that_ slow, in fact it seems using SkRegion can make things slower because of manipulating the region, but with SkIRect this could sometimes help a bit. It also appears that StretchDIBits() that is used by the Windows raster code doesn't work correctly if only a subset of the y-axis range is specified, which reduces the usefulness. <a href="https://cgit.freedesktop.org/libreoffice/core/commit/?id=d18731f71c60cbb6c02cabb042004b1aa9454de8">https://cgit.freedesktop.org/libreoffice/core/commit/?id=d18731f71c60cbb6c02cabb042004b1aa9454de8</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>