Pekka Paalanen <ppaala...@gmail.com> 于2019年7月26日周五 上午3:30写道： > > On Thu, 25 Jul 2019 13:00:55 +1200 > Barry Song <21cn...@gmail.com> wrote: > > > Pekka Paalanen <ppaala...@gmail.com> 于2019年7月24日周三 下午8:10写道： > > > > > > On Wed, 24 Jul 2019 13:22:43 +0800 > > > zou lan <nancy.lan....@gmail.com> wrote: > > > > > > > Hi pekka > > > > > > > > I see the clone mode is supported from this commit message. > > > > https://patchwork.freedesktop.org/patch/227970/ > > > > > > > > I also see the message "Independent CRTC clone mode cannot be supported > > > > until output layout logic is moved from libweston into the frontend and > > > > libweston's damage tracking issues stemming from overlapping outputs are > > > > solved". > > > > > > > > I want to ask is independent CRTC clone mode already supported in > > > > Weston 6 > > > > or 7? If not, > > > > is there a plan to support it? > > > > > > Hi, > > > > > > no, that commit message is still accurate. I don't know of any > > > plans to work on independent CRTC clone mode. > > > > Pekka, > > any possible workaround do you know to support independent crtc clone > > within weston? right now it is very important product feature. > > for example, force weston to identify only one screen, and sync copy > > the screen to 2nd screen and call the drm api of 2nd screen? > > Hi, > > you could hack it up to do that, but it would be in no way an > upstreamable solution. It would also hurt display timings because > every repaint would have to wait for both monitors to refresh. Or, > all but one monitor would tear. > > A simpler hack would be to create overlapping outputs and > force them repaint fully on every refresh instead of repainting > only the damage. That's not upstreamable either, but the damage > could be hacked with probably a one-liner.
Hi Pekka, Thanks. even though i have seen many times that damage tracking of overlapping outputs is the main cause stopping weston from supporting full clone mode, i haven't fully understood what is overlapping outputs in weston and found the code related with overlapping output, would you like to point out some code path so that i can begin to do some work on it? pls forgive me if you think the question is just stupid. > > > Thanks, > pq -barry _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/wayland-devel
