Bug 76537 - http://www.marcelcoenen.com/movieclips.htm scrolls very laggy
Summary: http://www.marcelcoenen.com/movieclips.htm scrolls very laggy
Status: RESOLVED DUPLICATE of bug 63935
Alias: None
Product: konqueror
Classification: Applications
Component: khtml (show other bugs)
Version: unspecified
Platform: Gentoo Packages Linux
: NOR normal
Target Milestone: ---
Assignee: Konqueror Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2004-03-02 00:35 UTC by Bart Verwilst
Modified: 2004-05-08 21:02 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:

Attachments
fixed background image (44 bytes, image/gif)
2004-03-02 02:47 UTC, Dirk Mueller 		Details
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Description Bart Verwilst 2004-03-02 00:35:51 UTC 
Version:            (using KDE KDE 3.2.0)
Installed from:    Gentoo Packages
Compiler:          gcc 3.3.3 
OS:          Linux

When scrolling down/up the list of movies on http://www.marcelcoenen.com/movieclips.htm, the page scrolls not smooth at all.. Like something is refreshing all the time or something..

Thanks in advance!
Comment 1 Dirk Mueller 2004-03-02 02:46:42 UTC 
well, the problem is that there is a 1x3 pixel alphatransparent
background image, that gets tiled, and tiling a alphatransparent
background image is terrible slow. 

Actually, it just uses an alpha color in the colormap but not in
the picture itself. so when removing it from the colormap, konqueror
detects that it can perform the tiling optimisation, and its fast
again. 

some sites are just designed to fail in our browser :-(
Comment 2 Dirk Mueller 2004-03-02 02:47:39 UTC 
Created attachment 4970 [details]
fixed background image

this is the image without alpha channel. its even
shorter :-)
Comment 3 Bart Verwilst 2004-03-02 13:36:44 UTC 
Hm,isn't there a way to optimize the tiling of alphatransparent background images? :) In the meantime, i'll send this page to the webmaster of that site...

Thanks!
Comment 4 Maksim Orlovich 2004-05-08 19:26:58 UTC 
see also 63935
Comment 5 Maksim Orlovich 2004-05-08 21:02:02 UTC 

*** This bug has been marked as a duplicate of 63935 ***