Hi Andrea,
One question/test: have you been able to run osgviewerQt on Windows for
instance? Usually, I need to patch src/osgQt/GraphicsWindowQt.cpp in 2
locations in order to prevent illegal values for scaled_width and/or
scaled_height:
void GLWidget::resizeEvent( QResizeEvent* event )
{
const QSize& size = event->size();
int scaled_width = static_cast<int>(size.width()*_devicePixelRatio);
int scaled_height = static_cast<int>(size.height()*_devicePixelRatio);
if (scaled_width <= 0 || scaled_height <= 0)
return;
_gw->resized( x(), y(), scaled_width, scaled_height);
_gw->getEventQueue()->windowResize( x(), y(), scaled_width,
scaled_height );
_gw->requestRedraw();
}
void GLWidget::moveEvent( QMoveEvent* event )
{
const QPoint& pos = event->pos();
int scaled_width = static_cast<int>(width()*_devicePixelRatio);
int scaled_height = static_cast<int>(height()*_devicePixelRatio);
if (scaled_width <= 0 || scaled_height <= 0)
return;
_gw->resized( pos.x(), pos.y(), scaled_width, scaled_height );
_gw->getEventQueue()->windowResize( pos.x(), pos.y(),
scaled_width, scaled_height );
}
Without these checks nothing is rendered. Maybe this is the case for
Android too?
hth,
Raymond
On 10/24/2016 11:11 AM, Andrea Bracci wrote:
Hi,
I'm trying to run a simple application using OSG + Qt on Android.
I have successfully built OSG Release 3.4.0 for Android (armeabi-v7a) and it
successfully runs on Android as expected (I have run the example
osgAndroidExampleGLES2 and it runs flawlessly). I have also successfully built
osgQt for my Qt version 5.7.0, as well as the osgViewerQt example for Android
armeabi-v7a.
However if I run osgviewerQt on my Android device (version 5.0.2, API 21) it
fails to render anything, in a way similar to what I found at the following
link:
http://lists.qt-project.org/pipermail/interest/2015-July/017869.html
In order to simplify the application I allocate a single QWidget (instead of
the four ones contained in the original osgviewerQt example) loading a single
osg::Node* from a file cessna.osg. I have verified that the cessna.osg file is
successfully loaded through a qDebug() logging message on the value of the
loaded pointer. On my Android device I see the OSG-default blue screen without
any object.
As an additional information: I have successfully built and executed the Qt
examples with OpenGLES on my Android device.
I have done an extensive web search but I didn't find the solution to my
problem, nor anyone that successfully ran OSG + Qt on Android.
Can anyone tell me where am I wrong, or what steps shall I follow to make my
OSG+Qt application to work on Android?
Thank you in advance for your kind replies!
Cheers,
Andrea
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=69134#69134
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