Native Development

[trollixx]

I've stuck with enabling OpenGL rendering on BB10 Dev Alpha.

The following code works correctly on Linux desktop, but not on BB10 device it leads to white screen.

QDeclarativeView *view = new QDeclarativeView;
QGLFormat format = QGLFormat::defaultFormat();
QGLWidget *glWidget = new QGLWidget(format);
glWidget->setAutoFillBackground(false);
view->setViewport(glWidget);
view->setSource("qml/main.qml");

 Have anyone managed to run QML app accelerated?

[smacmartin]

Are you using cascades QML or Qt QML?

Cascades is restricted to the cascades UI classes.  You can use any class documented in https://bdsc.webapps.blackberry.com/cascades/reference/classes.html

If you want to use openGL in cascades, try using a ForeignWindow.

Stuart

[trollixx]

I use Qt Quick, not Cascades.

[HorizonXP]

You can login to your Dev Alpha via SSH, and navigate to your app's sandbox to view the logs to confirm what I'm about to say, but I'm betting your error is related to the fact that the QtGui library is not included on the device. So you will have to package it yourself.

If you're still having issues, I can post the code i use for the PlayBook. 

[peter9477]

HorizonXP, actually libQtGui is included:

-rwxr-xr-x 1 root nto 8258064 Apr 15 10:48 libQtGui.so.4.8.0

[smacmartin]

I assume you've stepped through in the debugger, ensured that all pointers are non-zero and that glWidget->isValid returns true?  Has the debugger given you any other clues?

Stuart

[Zingam]

Isn't the QML runtime using OpenGL as a rendering API automatically when available?

[trollixx]

Hi, Stuart

I've just tested everything on the device again with the following code:

QGLFormat format = QGLFormat::defaultFormat();
QGLWidget *glWidget = new QGLWidget(format);
qDebug() << "GLWidget: " <<  glWidget;
qDebug() << "GLWidget validity: " <<  glWidget->isValid();
m_view->setViewport(glWidget); // m_view is QDeclarativeView
glWidget->showFullScreen();

 Here's the debug output:

GLWidget:  QGLWidget(0x93a9f0) 
GLWidget validity:  true 

 And the result is just a blank screen

[mgoulet]

Hey there,

Have you made any progress on this issue? where do you stand?

Let me know and I will investigate further;

Regards,

Martin

[trollixx]

Hi, Martin.

I haven't spent much time investigating this issue due to some other tasks, so my last message has all information I have at the moment. Using QGLWidget as context for QDeclarativeView leads to gray screen.