Error in the example "qt5_openglwindow"

[Humberto López León]

Hi Christian,

On 11/16/2015 01:14 PM, Christian Prochaska wrote:
> Hello Humberto,
>
> On 11/12/2015 11:17 PM, Humberto López León wrote:
>> I also tried two more examples of qt5_gui module (qtbase/examples/gui),
>> the rasterwindow and analogclock. To include these examples in the
>> compilation mechanism of Genode I relied on the example
>> "qt5_openglwindow". Both examples compiled correctly, but do not run as
>> they should. I tried it on Qemu with pbxa9 using the foc  kernel.
> could you provide a Genode branch on github or a patch with the changes
> you made, so I can easily reproduce the problem?
>
> Christian
>
With the help of some printf in the example rasterwindow I determined 
that the application fails in the renderNow() function, specifically 
when call the following code:

QPaintDevice *device = m_backingStore->paintDevice();

Output to run the application with foc_pbxa9:

Genode 15.08-215-g455cef5 <local changes>
int main(): --- create local services ---
int main(): --- start init ---
int main(): transferred 191 MB to init
int main(): --- init created, waiting for exit condition ---
Quota exceeded! amount=24576, size=4096, consumed=24576
[init] upgrading quota donation for Env::CPU (8192 bytes)
[init -> fb_drv] --- pl11x framebuffer driver ---
[init -> ps2_drv] Detected ExPS/2 mouse - activating scroll-wheel and 
5-button support.
[init -> ps2_drv] Using keyboard with scan code set 1 (xlate).
[init -> nitpicker] create session with args: label="wm", ram_quota=28672
[init -> nitpicker] create session with args: label="pointer", 
ram_quota=28672
[init -> nitpicker] create session with args: label="wm -> decorator", 
ram_quota=28672
[init -> rasterwindow] tar archive 'qt5_fs_rasterwindow.tar' local at 
bf000, size is 503808
[init -> rasterwindow] void init_libc_lock_pipe(): init_libc_lock_pipe()
[init -> rasterwindow] using the pipe libc plugin
[init -> rasterwindow] read_rtc: rtc not configured, returning 0
[init -> rasterwindow] pid_t getpid(): getpid not implemented
[init -> nitpicker] create session with args: label="wm -> 
rasterwindow", ram_quota=28672
[init -> rasterwindow] fcntl(): command 4 arg 4 not supported - pipe
[init -> rasterwindow] fcntl(): command 4 arg 5 not supported - pipe
[init -> rasterwindow] fcntl(): command 4 arg 4 not supported - pipe
[init -> rasterwindow] fcntl(): command 4 arg 5 not supported - pipe
[init -> rasterwindow] read_rtc: rtc not configured, returning 0
[init -> rasterwindow] void qDefaultMessageHandler(QtMsgType, const 
QMessageLogContext&, const QString&): QObject::connect: Cannot connect 
(null)::framebuffer_changed() to 
QNitpickerWindowSurface::framebuffer_changed()
[init -> nitpicker] create session with args: label="wm -> 
rasterwindow", ram_quota=28672
[init -> rasterwindow] ============= ok 1==============
[init -> rasterwindow] ============= ok 2==============
no RM attachment (READ pf_addr=0 pf_ip=101ce74 from 414000)
Genode::Signal_session_component::submit(Genode::Signal_context_capability, 
unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid 
signal-context capability
Genode::Pager_entrypoint::entry()::<lambda(Genode::Pager_object*)>: 
Could not resolve pf=0 ip=101ce74


I hope this clarifies my problem.
In the patch are the printf I used in the application code.
Thank you,

Humberto

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