https://bugs.freedesktop.org/show_bug.cgi?id=27628
Summary: glxgears prints bogus swap interval information
Product: Mesa
Version: git
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Demos
AssignedTo: mesa3d-dev@lists.sourceforge.net
ReportedBy: mschm...@redhat.com
Created an attachment (id=34997)
View: https://bugs.freedesktop.org/attachment.cgi?id=34997
Review: https://bugs.freedesktop.org/review?bug=27628&attachment=34997
[PATCH] Initialize swap_interval to 0
$ glxgears
Running synchronized to the vertical refresh. The framerate should be
approximately 1/1920103026 the monitor refresh rate.
The number is obviously nonsense. This is on current Fedora 13
(mesa-7.8.1-1.fc13).
I looked into it and here's what I found:
- glxgears gets this number using GLX_MESA_swap_control from
glXGetSwapIntervalMESA().
- glXGetSwapIntervalMESA() calls into src/glx/dri2_glx.c:dri2GetSwapInterval()
which returns priv->swap_interval - this value is not initialized. Valgrind
agrees:
==25411== Conditional jump or move depends on uninitialised value(s)
==25411== at 0x402C9A: main (glxgears.c:619)
Should pdraw->swap_interval be initialized to 0 in dri2CreateDrawable(), like
in the attached patch?
--
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
------------------------------------------------------------------------------
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
_______________________________________________
Mesa3d-dev mailing list
Mesa3d-dev@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
