package up for testing at ppa:tjaalton/test
** Changed in: mesa (Ubuntu Yakkety)
Assignee: (unassigned) => Timo Aaltonen (tjaalton)
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https://bugs.launchpad.net/bugs/1641017
Title:
Mesa 12.0.4 - multiple important fixes, stable branch
Status in mesa package in Ubuntu:
Confirmed
Status in mesa source package in Yakkety:
Confirmed
Bug description:
[Impact]
Mesa 12.0.4 is now available as a point release in the stable branch. Mesa
has MRE for these.
The release contains multiple fixes amongst which:
The nouveau vdpau driver performance has been restored. The wayland-egl
module no longer crashes if the user calls eglDestroySurface and
wl_egl_window_destroy in the "wrong" order. libEGL correctly advertises
the EGL platforms available. Multiple fd leaks were addressed, which
could prevent rmmod of devices such as the DisplayLink drivers. Radeonsi
has gained noticeable performance by disabling ReZ. Interop between third
party OpenCL implementations and mesa's libGL/libEGL is back online...
and many more.
Full changelog:
https://lists.freedesktop.org/archives/mesa-dev/2016-November/135027.html
I am particularly interested in the RadeonSI performance boost:
https://lists.freedesktop.org/archives/mesa-dev/2016-October/131759.html
In real-world tests the boost is about 20% (Yay!) :
http://www.phoronix.com/scan.php?page=news_item&px=Mesa-Post-ReZ-Change-Benchmarks
[Test case]
There's only a modest number of changes to the drivers, the performance boost
for Radeon is result of one fix for the shaders.
[Regression potential]
The release consists of cherry-picks from master, specifically selected as
bugfixes. Regression potential should be low.
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