Dear All, I am "moving" a scenegraph underneath a CameraNode/RTT, so that I can perform shader related effects on it. Previously (pre RTT) I had a cullCallback set within which the viewport size was picked up with :
osg::CullStack* cs = dynamic_cast<osg::CullStack*>(nv); //nv is the osg::NodeVisitor entry int width = cs->getViewport()->width(); This used to work fine, giving me the correct window size. Under a RTTing/FBO/CameraNode, I was hoping that this would report the viewport size of the CameraNode; however it still reports the size of the actual parent window. Is this expected behaviour? If it is, (how) can I programmatically find out the viewport size from within a RTTing subgraph? Thanks in advance, David
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