Re: [Development] [Bug] QOpenGLWidget::grab() not behaving properly

2017-11-29 Thread Sergio Martins 

On 2017-11-29 16:02, Jose Fernandez Navarro wrote:

Hello,

I have a QOpenGLWidget object where I draw
using both OpenGL and QPainter. When I called
grab() on the object prior 5.9.2 I would get a seg. fault.
Now (5.9.2) I can grab the widget's image but
the QPainter stuff is missing and actually it dissappears
from the widget until I refresh it again by panning or zooming on it.


Hi,

Can you see if https://codereview.qt-project.org/#/c/197930/ helps ?


Regards,
--
Sérgio Martins | sergio.mart...@kdab.com | Senior Software Engineer
Klarälvdalens Datakonsult AB, a KDAB Group company
Tel: Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322)
KDAB - The Qt, C++ and OpenGL Experts
___
Development mailing list
Development@qt-project.org
http://lists.qt-project.org/mailman/listinfo/development

[Development] [Bug] QOpenGLWidget::grab() not behaving properly

2017-11-29 Thread Jose Fernandez Navarro 
Hello, 

I have a QOpenGLWidget object where I draw
using both OpenGL and QPainter. When I called
grab() on the object prior 5.9.2 I would get a seg. fault. 
Now (5.9.2) I can grab the widget's image but
the QPainter stuff is missing and actually it dissappears
from the widget until I refresh it again by panning or zooming on it. 

This is how I do the grabbing: 

const QPixmap res = grab(QRect(0,0,width(),height()));
return res.toImage();

Is this a known bug? or is it actually a bug? I believe
it should be possible to grab the image from the widget
even if I draw on it with both OpenGL and QPainter. 
I figured I would post it here before creating an issue.

ps: I am using OSX (latest version, Sierra). 

Thanks in advance.

Best,

Jose___
Development mailing list
Development@qt-project.org
http://lists.qt-project.org/mailman/listinfo/development