[Bug 99418] DRI3 Stuttering while scrolling in Chromium/Chrome with VBLANK off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99418

--- Comment #22 from lei.pero at gmail.com ---
(In reply to Michel Dänzer from comment #21)
> (In reply to lei.pero from comment #18)
> > I didn't know that about modesetting driver, anyway, even with
> > LIBGL_DRI3_DISABLE=1 same thing happens.
> 
> Maybe chromium doesn't pass on the environment variable to its GPU helper
> process, or maybe there was still a chromium process around.
> 
> 
> > I don't how to disable tripple buffering to test it and if it's possible,
> 
> Only by changing the code,
> mesa/src/loader/loader_dri3_helper.c:dri3_update_num_back(). E.g. set
> num_back = 1 in the else case.

Ok, I've built mesa with that parameter changed and installed, same behavior.
I've cloned just "git://anongit.freedesktop.org/git/mesa/mesa" , it should be
enough.

On the side note, if default is glamor, EXA definitively works better on my
config (not huge difference, but there is difference). I will try to investiate
more, but I'm really not sure where to look.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20170123/80e67991/attachment.html>