On Mon, 10 Sep 2012 16:09:18 +0200 Roberth Sjon?y <roberth.sjonoy at gmail.com> wrote: > With the WM I use (xfce WM 4.10.0) with it's compositor, the tearing > is much less, but the little tearing who exist is very noticable. Your option is SNA + TearFree, or use a real composited desktop. I know it sucks. Or maybe complain to the XFCE guys to use real pageflips in their compositor? > > On Sun, Sep 9, 2012 at 8:00 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote: > > On Sun, 09 Sep 2012 10:55:46 -0700, Ben Widawsky <ben at bwidawsk.net> wrote: > >> On 2012-09-09 08:48, Roberth Sjon?y wrote: > >> > Hello > >> > > >> > I run Arch Linux, with it's latest x.org and kernel, and I have > >> > compiled libdrm and the intel driver from git, and I update it today. > >> > > >> > Buit this is issue exists even with the releases. > >> > > >> > WIth UXA, rendering of the windows in my XFCE4-desktop goes just > >> > fines, good performance, windows (exspecially GTK+) doesn't hang > >> > after > >> > if I drag them over the screen, but there is lot of small tearing. > >> > And I want this to go away, I do not use any kind of composition, and > >> > I am using XFCEs window manager. > >> > > >> > Here is my xorg.conf > >> > > >> > > >> > Section "ServerFlags" > >> > Option "AutoAddDevices" "Off" > >> > EndSection > >> > > >> > Section "InputDevice" > >> > Identifier "Keyboard0" > >> > Driver "keyboard" > >> > Option "XkbLayout" "no" > >> > EndSection > >> > > >> > Section "Device" > >> > Identifier "Card0" > >> > Driver "intel" > >> > Option "AccelMethod" "UXA" > >> > Option "TearFree" "true" > >> > Option "MigrationHeuristic" "greedy" > >> > Option "TripleBuffer" "true" > >> > EndSection > >> > > >> > With SNA, the performance of the applications is muc much worse. If I > >> > just replace UXA with SNA. > >> > > >> > Thanks in advance for any help. > >> > > >> > Regards, > >> > > >> > Roberth Sjon?y0 > >> > >> Unfortunately it's often the case that tearing is pretty much > >> unavoidable without a compositor. AFAIK you'd just be getting lucky with > >> SNA, as opposed to UXA. > > > > Not so. He is explicitly asking for slow tear-free rendering with > > Option "TearFree" "true". On my machines that takes about a 50% > > performance hit which suggests pebkac which is reinforced by the lack > > of information. > > -Chris > > > > -- > > Chris Wilson, Intel Open Source Technology Centre -- Ben Widawsky, Intel Open Source Technology Center
