[Bug 84253] New: XDrawSegments() output truncated if EXAPixmaps = on

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Sep 23 09:39:22 PDT 2014


          Priority: medium
            Bug ID: 84253
          Assignee: xorg-driver-ati at lists.x.org
           Summary: XDrawSegments() output truncated if EXAPixmaps = on
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mse00000 at gmail.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: Driver/Radeon
           Product: xorg

Created attachment 106748
  --> https://bugs.freedesktop.org/attachment.cgi?id=106748&action=edit
Test application

Since several years MSEgui doesn't work with radeon driver anymore.


I again unsuccessfully spent several days to try to find a bug in MSEgui, try
to find a workaround or to find a small testapplication which shows the
MSEgui paints on a pixmap with the size of the update region which is moved to
the window by xcopyarea() after the drawing is complete.
The attached application draws a diagonal line over a grid cell. Every 2
seconds the cell will be invalidated and refreshed. At startup the display is
OK, after 2 seconds the diagonal line will be truncated. This has been
reproduced on three installations.
If the test-program is started with any command line parameter (ex.
"./radeonline abc" the drawing of the blue rectangle is disabled. Two of the
three installations always show the diagonal line in this mode with full
length, one truncates it after 2 seconds.
With the option "EXAPixmaps" "off" in xorg.conf all is OK.
The simplified testprogram from 
shows a distorted display also by directly drawing to the window so the double
buffering probably is not the culprit.

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