[Development] swapEGLBuffers() : 135 : QQNX: failed to swap EGL buffers, err=12301 on QNX with Qt-5.3.2

[Prashant Purohit]

Hi James,

Thanks for a quick reply.

> You might be able to get around the problem if you can give the
> application a chance to draw between resize operations.

I am not sure how can I draw between resize operation.
Also, since this issue is hardly reproducible, how will I verify the
fix which I will do.

Do you know anyway with which I can reproduce this issue every-time?
Also when will be the QNX-QT fix will be available so that an update
in QNX at my side will help me fix this issue?

Thanks,
Prashant

On 6/13/17, James McDonnell <jmcdonnell at blackberry.com> wrote:
> Hi Prashant,
>
> Is your application performing a rapid sequence of resizing operations on
> the EGL window that leaves the size of the window unchanged?  We recently
> discovered that this can cause the QNX Qt platform code to produce this
> problem.  I haven't had a chance to upstream the fix for it yet.  We also
> haven't updated the Qt that QNX produces (which I think is what you're
> using).
>
> You might be able to get around the problem if you can give the
> application a chance to draw between resize operations.
>
> James
>
> On 2017-06-13, 12:50 AM, "Development on behalf of Prashant Purohit"
> <development-bounces+jmcdonnell=blackberry.com at qt-project.org on behalf of
> prashantpurohit025 at gmail.com> wrote:
>
>>Hi All,
>>
>>I am using QNX with Qt-5.3.2 and found below issue and crash:
>>
>>FAULT - qqnxeglwindow.cpp : void QQnxEglWindow::swapEGLBuffers() : 135
>>: QQNX: failed to swap EGL buffers, err=12301
>>
>>When I checked on internet for this issue, it was referenced that when
>>Qnx window does not find EGL surface to paint this issue occurs but I
>>have an EGL display surface only and not sure why this error occurs.
>>
>>This issue has occurred only twice on release build and I could not
>>get the back-trace.
>>
>>This seems to be QNX issue as an application software with QT, we do
>>not directly deal with swapEGLBuffers.
>>
>>Please let me know if anyone has faced similar issue or know how to
>>fix this issue.
>>
>>Thanks,
>>Prashant
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>
>