https://bugs.documentfoundation.org/show_bug.cgi?id=104716
--- Comment #40 from Telesto <tele...@surfxs.nl> ---
Created attachment 136783
--> https://bugs.documentfoundation.org/attachment.cgi?id=136783&action=edit
Bibisect log
The slow mouse scrolling for documents containing pngs's started with the LibO
4.3 branch.
1. Open attachment 129896
2. Scroll down.
I bibisected it to:
~/bibisect-43max$ git bisect bad
af3738481b95e4747478021f93aac10e80a35c52 is the first bad commit
commit af3738481b95e4747478021f93aac10e80a35c52
Author: Matthew Francis <mjay.fran...@gmail.com>
Date: Thu May 28 18:33:29 2015 +0800
source-hash-3cf3700b7a903e88f5296076c40ae854bce91cdc
commit 3cf3700b7a903e88f5296076c40ae854bce91cdc
Author: Jan Holesovsky <ke...@collabora.com>
AuthorDate: Mon Jan 27 20:11:26 2014 +0100
Commit: Jan Holesovsky <ke...@collabora.com>
CommitDate: Mon Jan 27 20:17:01 2014 +0100
fdo#74124: Scale the pictures before calling ImplDrawAlpha().
When the source and destination bitmap do not have the same size,
ImplDrawAlpha() does not use direct paint, but instead it gets the image from
the screen, blends it with the provided bitmap, and again draws it.
Unfortunately, the blending uses the most trivial (and ugly) way of scaling;
so to produce much better results, let's scale to the destination size before
even calling ImplDrawAlpha().
The sideeffect is that we use the direct paint in most cases now; so hopefully
it pays off to do the (a bit more expensive) scale first.
Change-Id: I3b6b275710220910709ae4345ad6be3d6e4bf79c
:040000 040000 d0f6eee0576c14affca0296f09caf1aff748a67c
8d9d2f4ebc8df18549ae3cc2fdccddc5856c6260 M opt
--
You are receiving this mail because:
You are the assignee for the bug._______________________________________________
Libreoffice-bugs mailing list
Libreoffice-bugs@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/libreoffice-bugs
