Thank you for reporting your experience Jacob!
My problem is that I am forced to use an ltib environment for cross
compiling, so it isn't so simple to compile the required libraries to
support X11 backend...
Btw I see that using eglfs in an application that don't use QML (the Qt
fingerpaint example), the pointer follow the finger at higher speed, as
it should happen...
IMHO I think that the problem is bound to the new qml engine or in the
interaction with the tslib plugin... But I don't know the library
internals, so I cannot find any solution right now.
Stefano.
On 03/06/2014 10:45 AM, Jacob Kroon wrote:
On Thu, Mar 6, 2014 at 10:20 AM, Stefano Cordibella
<stefano.cordibe...@edalab.it <mailto:stefano.cordibe...@edalab.it>>
wrote:
Thank you Jacob for your suggestion,
for this application the choice of using eglfs is not under my
direct control, in addition to this I suppose that the use of X11
can degrade the performance of the application (the target is a
imx6 Single...).
Did you noticed a decrease in performance moving from eglfs to X11?
Which imx6 did you used? Single Dual or Quad?
It's just been some very rude basic testing, running a custom QML
application on Wandboard Solo and Wandboard Quad.
I can't say I've seen any particular overhead in performance in
comparing X11/eglfs, but eglfs should in theory use less resources as
I see it.
As a humble Qt5 user I'm simply suspecting that the eglfs backend has
seen less use, and is not as mature as the X11 backend yet.
Stefano.
On 03/06/2014 10:05 AM, Jacob Kroon wrote:
Hi Stefano,
On Thu, Mar 6, 2014 at 9:22 AM, Stefano Cordibella
<stefano.cordibe...@edalab.it
<mailto:stefano.cordibe...@edalab.it>> wrote:
Hi Jacob,
right, I did not specify that I use eglfs.
I can just talk from my own personal experience in using
Qt5+iMX6. In 5.1.1, eglfs had a hard time tracking the mouse
pointer, 5.2.0 improved things a lot. But best experience sofar
has been in using the X11 backend instead of eglfs.
Stefano.
On 03/06/2014 08:53 AM, Jacob Kroon wrote:
Hi Stefano,
On Thu, Mar 6, 2014 at 8:47 AM, Stefano Cordibella
<stefano.cordibe...@edalab.it
<mailto:stefano.cordibe...@edalab.it>> wrote:
Hi list,
using qt 5.2.2 (release branch from git, but I
noticed the same issue with 5.2.1) on I.MX6 it is
impossible to flick on qml elements, because the pointer
does not "follow" the finger on touchscreen...
The strange issue is that with non-qml application
(fingerpaint example) or using tslib test application
(ts_test) on device the cursor follow the finger at
higher speed.
Is this a libqtslibplugin.so or a qml issue?
I generated the plugin without any option, only qmake,
make and make install...
I am using tslib library because my touchscreen does not
support evdev (it is resistive?); I mean, trying to use
EvdevTouch does not work at all, using EvdevMouse I see
the pointer moving on screen, but the click doesn't work...
Any suggestion will be appreciated...
Which qpa backend are you using, xcb, wayland or eglfs ?
--
*Stefano Cordibella*
EDALab s.r.l. - Networked Embedded Systems
Strada Le Grazie, 15 - 37134 Verona - Italy
email : stefano.cordibe...@edalab.it
<mailto:stefano.cordibe...@edalab.it>
skype : stefano.cordibella
tel. : +39 045 802 70 85 <tel:%2B39%20045%20802%2070%2085>
web : www.edalab.it <http://www.edalab.it>
--
-- Jacob
--
*Stefano Cordibella*
EDALab s.r.l. - Networked Embedded Systems
Strada Le Grazie, 15 - 37134 Verona - Italy
email : stefano.cordibe...@edalab.it
<mailto:stefano.cordibe...@edalab.it>
skype : stefano.cordibella
tel. : +39 045 802 70 85 <tel:%2B39%20045%20802%2070%2085>
web : www.edalab.it <http://www.edalab.it>
--
-- Jacob
--
*Stefano Cordibella*
EDALab s.r.l. - Networked Embedded Systems
Strada Le Grazie, 15 - 37134 Verona - Italy
email : stefano.cordibe...@edalab.it
skype : stefano.cordibella
tel. : +39 045 802 70 85
web : www.edalab.it
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