When running The Talos Principle[1] on my GK104 under Nouveau,=
I get two kinds
of odd flickering:
=C2=B7 some parts of some objects flicker between being bright and less bri=
ght
=C2=B7 some objects flicker between being "normal" and full-red
Although, the "red" flicker does not appear if the game's graphic=
s settings are
set to "minimum" =E2=80=93 only the bright / less bright flicker =
happens.
It looks fine on proprietary drivers, which probably rules out hardware
defects. It also looks fine on an Intel GPU under Mesa.
I recorded a short video[2] in case anyone agrees that one look is better t=
han
a thousand words and wants to see it in action.
I recorded an apitrace[3] of it. On nouveau this replays the same way it lo=
oks
"live". On proprietary drivers it replays "correctly" =
=E2=80=93 the flicker is
nonexistent. I did not manage to do the reverse =E2=80=93 sadly, an apitrac=
e recorded
on proprietary drivers fail to replay at all regardless of what driver is u=
sed.
[1] http://store.stea=
mpowered.com/app/257510/ [a free demo version which can be
used to reproduce is also available]
[2] https://seri=
ouss.am/video/talos-redflicker.mp4 length: 20 seconds;
filesize: 24.6 MiB
[3] =
https://seriouss.am/talos-nouveau-2015-05-11T1231.trace.xz filesize: 36=
1.9
MiB