Hi,
On 11/06/2011 01:03 AM, ext Nicolai Hess wrote:
2011/11/5 Felipe Crochik<fel...@crochik.com>
Unfortunately It didn't do the trick.... I can't tell any difference
...still crashes with the QPainter::save()....
Please let me know if any of you have any more ideas... I will play a
little more tomorrow.
Note that in general GL context should be dropped in applications
when they aren't visible. Main exception for this rule are plain GL
games because they cannot do this easily and user isn't typically
running many such games at the same time, like could be the case
with normal apps.
This is because GL contexts are severely limited resource and after
system runs out of them, any new processes just abort/crash on startup
because GL init fails.
Dropping GL context on background should happen automatically for
most MeegoTouch and QML applications. If you're directly using GL
operations in such applications without taking this account, and
e.g. trying to do GL drawing in the background, funny things may
happen.
- Eero
Felipe
2011/11/5 Kristóf Timur<ti...@sch.bme.hu>
That’s not how it’s done.
1. In your .pro file, add:
QT += opengl
2. at the top of your cpp, add:
#include<QGLWidget>
3. when you initialize your QDeclarativeView:
QGLWidget glWidget;
QDeclarativeView view;
view.setViewport(&glWidget);
Cheers,
Timur
*From:* Felipe Crochik<fel...@crochik.com>
*Sent:* Saturday, November 05, 2011 11:26 PM
*To:* nicolaih...@web.de
*Cc:* maemo-developers<maemo-developers@maemo.org>
*Subject:* Re: N950 SEGFAULT - help?
Nicolai,
I tried the application using (I assume that is what you meant):
QApplication::setGraphicsSystem("opengl");
and haven't been able to crash the application but it gets really slow
and unresponsive. Also I get these error messages on my log:
Valid eglHandle received but not running with meego compatible
graphicssystem.
Any ideas?
Thanks,
Felipe
2011/10/7 Nicolai Hess<nicolaih...@web.de>
Have you tried to use a QGLWidget for the qmlviewer ?
This works for the QML Camera element which has the
same behavior, segfaults when application moved to background.
2011/10/7 Felipe Crochik<fel...@crochik.com>
That is the "next" problem. They are not available - maybe I need to
add some extra repository? sorry if I missed some obvious "development"
required step.... It is hard to start over!
2011/10/7 Daniil Ivanov<daniil.iva...@gmail.com>
apt-get install libqtwebkit4-dbg
or
apt-get install libqt4-webkit-dbg.
2011/10/7 Ивайло Димитров<freemangor...@abv.bg>:
> Why not install Qt debug symbols on the device and run/attach to
your
program there under gdb?
-------- Оригинално писмо --------
От: Felipe Crochik
Относно: N950 SEGFAULT - help?
До: maemo-developers@maemo.org
Изпратено на: Петък, 2011, Октомври 7 05:20:55 EEST
I hit a wall with my application so I am looking for someone to help
everywhere I can.
The short version: how can I get qt creator to debug my application
on the
device. Right now I get CRC mismatch warnings for all libraries and
I assume
this is what prevents me to see any trace information
That is what I get when I start to debug:
...
the debug information found in
"c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvrPVR2D_DRI2WSEGL_r125.so"
does not match
"c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvrPVR2D_DRI2WSEGL.so"
(CRC mismatch).
the debug information found in
"c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvr2d_r125.so"
does not match
"c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvr2d.so"
(CRC mismatch).
...
I assume I need to install "debug symbols/versions" for the qt
libraries on
the device somehow. Am I right? How can I accomplish this?
The long version:
My applications uses qml\webview and everything works fine until I
swipe out
of my application and then later come back to it. With one click or
two I
get a segfault. This is all the information that I managed to get
running
gdb on the device:
(gdb) backtrace
#0 0x42068924 in QPainter::save() () from /usr/lib/libQtGui.so.4
#1 0x48ec294c in ?? () from /usr/lib/libQtWebKit.so.4
#2 0x48ec294c in ?? () from /usr/lib/libQtWebKit.so.4
Program received signal SIGSEGV, Segmentation fault.
Any suggestions?
Thanks in advance,
Felipe
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Can you give a link to your source.
nicolai
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