On Fri, 29 Jun 2018 10:08:17 +0000 "Ray, Ian (GE Healthcare)" <[email protected]> wrote:
> > On 6 Jun 2018, at 14.30, Pekka Paalanen <[email protected]> wrote: > > > > From: Pekka Paalanen <[email protected]> > > > > Add a new output section key "same-as" for configuring clone mode. An > > output marked "same-as" another output will be configured identically to > > the other output. > > > > The current implementation supports only CRTC sharing for clone mode. > > 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. > > > > Quite a lot of infrastructure is needed to properly configure clone > > mode. The implemented logic allows easy addition of independent CRTC > > clone mode once libweston supports it. The idea is that wet_layoutput is > > the item to be laid out and all weston_outputs a wet_layoutput > > contains show exactly the same area of the desktop. > > > > The configuration logic attempts to automatically fall back to creating > > more weston_outputs when all heads do not work under the same > > weston_output. For now, the fallback path ends with an error message. > > > > Enabling a weston_output is bit complicated, because one needs to first > > collect all relevant heads, try to attach them all to the weston_output, > > and then back up head by head until enabling the weston_output succeeds. > > A new weston_output is created for the left-over heads and the process > > is repeated. > > > > CRTC-sharing clone mode is the most efficient clone mode, offering > > synchronized scanout timings, but it is not always supported by > > hardware. > > > > Reviewed-by: Ian Ray <[email protected]> Pushed: 6a699b1a..90718170 master -> master Thanks, pq > > v10: > > - rebased trivial conflicts in man page > > - switch to gitlab issue URL > > > > v9: > > - replace weston_compositor_set_heads_changed_cb() with > > weston_compositor_add_heads_changed_listener() > > - remove workaround in simple_head_enable() > > > > v6: > > - Add man-page note about cms-colord. > > - Don't create an output just to turn it off. > > > > Fixes: https://gitlab.freedesktop.org/wayland/weston/issues/22 > > > > Signed-off-by: Pekka Paalanen <[email protected]> > > Acked-by: Derek Foreman <[email protected]> > > Acked-by: Daniel Stone <[email protected]> > > --- > > compositor/main.c | 492 > > ++++++++++++++++++++++++++++++++++++++++++++++++++--- > > man/weston-drm.man | 12 ++ > > 2 files changed, 484 insertions(+), 20 deletions(-)
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