On Fri, 23 Mar 2018 08:46:46 -0500 Matt Hoosier <[email protected]> wrote:
> I am very much in favor of the overall approach on this patch series. > I've experienced every single one of the problems described in this > summary, and my company currently resorts to maintaining a hacky > out-of-tree calibration tool to paper over these problems. Hi Matt, that is very heartwarming to hear. Is your tool specifically for Weston too? I would be very happy if this proposal fits your needs, and certainly interested in hearing where it falls short. Thanks, pq > On Fri, Mar 23, 2018 at 7:00 AM, Pekka Paalanen <[email protected]> wrote: > > From: Pekka Paalanen <[email protected]> > > > > Hi all, > > > > the existing touchscreen calibrator in Weston has several problems. This > > proposal intends to solve them all by introducing a new protocol > > extension for touchscreen calibration and a new calibrator tool. > > > > The benefits of the new tool, which the old tool lacks, are: > > > > - You can unambiguously pick a physical touch device to calibrate. > > > > - You can be sure your touch events come only from that particular > > device, and that you cannot miss touch events even if the current > > calibration is horribly wrong. > > > > - You can be sure the calibration window (pattern) is shown on the right > > output with the right coordinates. > > > > - You can unambiguously calibrate even multiple touchscreens that are > > all cloned (showing the same image). > > > > - You get a libinput style calibation matrix instead of the > > WL_CALIBRATION format which depends on output resolution. > > > > - You can load a new calibration into the compositor without playing > > tricks with udev or restarting the compositor. > > > > There is more discussion about the topic at: > > https://phabricator.freedesktop.org/T7868 > > > > This patch series depends on the clone mode series: > > https://patchwork.freedesktop.org/series/32898/ > > > > There is a full branch available at: > > https://gitlab.collabora.com/pq/weston/commits/touchcalib-1
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