Hi,
I also tried posting on the forums but they seem out of order.
I'm trying to render a scene onto a UIView that's part of a UIViewController, so that I can have iOS UI overlay on top of the OSG view.
I tried to achieve this by using the GraphicsWindowIOS class and binding it to my internal view. This works fine except for one issue, the scene seems stretched horizontally (in landscape orientation), even though its rendered at fullscreen and there's no resizing happening.
This is the relevant part of the code I'm using:
[code]
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
CGRect lFrame = [self.osgView convertRect:self.osgView.frame fromView:[UIApplication sharedApplication].keyWindow];
unsigned int w = lFrame.size.width * [[UIScreen mainScreen] scale];
unsigned int h = lFrame.size.height * [[UIScreen mainScreen] scale];
osg::DisplaySettings* settings = osg::DisplaySettings::instance();
settings->setNumMultiSamples(4);
osg::ref_ptr<osgViewer::GraphicsWindowIOS::WindowData> windata = new osgViewer::GraphicsWindowIOS::WindowData(self.osgView, osgViewer::GraphicsWindowIOS::WindowData::LANDSCAPE_LEFT_ORIENTATION, -1.0f);
// Setup the traits parameters
traits->x = lFrame.origin.x * [[UIScreen mainScreen] scale];
traits->y = lFrame.origin.y * [[UIScreen mainScreen] scale];
traits->width = w;
traits->height = h;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->setInheritedWindowPixelFormat = false;
traits->inheritedWindowData = windata;
// Create the Graphics Context
osg::ref_ptr<osg::GraphicsContext> graphicsContext = osg::GraphicsContext::createGraphicsContext(traits.get());
_root = new osg::MatrixTransform();
osg::ref_ptr<osg::Node> model = (osgDB::readNodeFile("full.ive"));
_root->addChild(model);
_viewer = new osgViewer::Viewer();
if(graphicsContext)
{
_viewer->getCamera()->setGraphicsContext(graphicsContext);
_viewer->getCamera()->setViewport(new osg::Viewport(traits->x, traits->y, traits->width, traits->height));
}
_viewer->setSceneData(_root.get());
_cameraManipulator = new osgGA::MultiTouchTrackballManipulator();
_viewer->setCameraManipulator(_cameraManipulator);
_viewer->realize();
// draw a frame
_viewer->frame();
[/code]
I noticed that if I do not use a graphics context (for example by commenting out the setGraphicsContext line) the view appears on the entire screen (like before) but with the correct aspect ratio, again, even though there is seemingly no difference in the view's size.
I'm relatively new to OSG and I've been struggling with this issue for a couple of days now so any tips on how to fix it will be appreciated.
Thank you!
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