https://bugs.freedesktop.org/show_bug.cgi?id=29972
Summary: d-r-t /r6xx+: use new style fencing (v2) causes very
poor gl perf.
Product: Mesa
Version: git
Platform: x86 (IA32)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/R600
AssignedTo: dri-devel@lists.freedesktop.org
ReportedBy: li...@andyfurniss.entadsl.com
rv790 PCIE, current git ddx, mesa from yesterday.
Just tried today's updated d-r-t and
/r6xx+: use new style fencing (v2)
is causing very poor gl perf eg. 1 fps in mesa demo tunnel, some demos appear
OK at first but even though they reach refresh rate they glitch for a second
after a while.
exa is also affected - it's slower drawing than the "instant" speed I am used
to eg when switching between metacity workspaces. Seamonkey scrolling with a
page with images is glitchy.
Tiling on/off makes no difference, with without last ddx commit makes no
difference.
git reset --hard d-r-t to the commit before this one is working OK.
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