It tears in full screen with and without compositing in xfce
On 11 October 2017 09:40:59 BST, "Michel Dänzer" <mic...@daenzer.net> wrote: >On 10/10/17 07:50 PM, Anton Ivanov wrote: >> Package: xserver-xorg-video-radeon >> Version: 1:7.8.0-1+b1 >> Severity: important >> >> Dear Maintainer, >> >> Radeon (and amdgpu for that matter) in stretch no longer match frames >> to vsync correctly. This is observable with vdpau, opengl and plain >> xvideo. >> >> This used to work correctly in jessie so this is a recent regression. >> >> This is also observable in both full screen and windowed mode. The >> bottom ~5-10% of the picture updates on the wrong vsycn which is >> clearly visible especially in action sequences and animation. >> >> Tested with vlc, mplayer, xine and other software in a variety of >> output modes. I think I have eliminated other possible common factors >> leaving the video driver (and/or firmware) the most likely culprit. > >The only possibilities for reliably avoiding tearing in Xorg have >always >been: > >1. Using a compositing manager which uses OpenGL for rendering >2. Running an application in fullscreen, using page flipping (i.e. the > application must use something like OpenGL / VDPAU / VA-API / ... for > rendering / presentation, but not something like XVideo or even pure > X11) >3. Enabling TearFree > >Note that 1.+2. are not sufficient when using rotation or other >transforms via the RandR extension. > > >Does your setup fall under any of these cases? If not, you may just >have >gotten lucky before. > > >-- >Earthling Michel Dänzer | >http://www.amd.com >Libre software enthusiast | Mesa and X >developer -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
