Bug 11167 - Problem with RGBA images while using XAA
Summary: Problem with RGBA images while using XAA
Status: RESOLVED WONTFIX
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/Acceleration/XAA (show other bugs)
Version: unspecified
Hardware: All All
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-06-06 00:14 UTC by Hasso Tepper
Modified: 2011-10-15 18:41 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments

Description Hasso Tepper 2007-06-06 00:14:58 UTC
Rendering RGBA images is awfully slow with Konqueror web browser (and with other Qt applications) with XAA since upgrade from 6.8 and haven't improved since then. I use Linux and DragonFly BSD with ati, mga and nv drivers and all these have the problem.

Good testcase is viewing screenshots in http://kde-apps.org/content/show.php?content=10187 . With first two screenshots Konqueror really lags - it's slow to open, scroll and move window. But there isn't any slowdown with third screenshot. First two screenshots are 8-bit/color RGBA images, third one is 8-bit/color RGB image. Although Firefox handles these images significantly better, there is noticeable slowdown in it as well on slower machines.

There is no problem with EXA (tested with ati and xorg 7.1),  but EXA is currently broken in xorg 7.2 and isn't available at all for nv. I'm almost sure that it's a regression - the problem appeared with xorg 6.9 - I still have some machines with XFree86 and there is no problem with them.
Comment 1 Jeremy Huddleston Sequoia 2011-10-15 18:41:05 UTC
This is old.  XAA is old and crufty and won't be seeing performance 
improvements.  If you can provide a patch to fix this, however, it will be 
considered.


Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.