A search of the mailing list archives will answer this often asked question you need a valid graphics context to do this which is typically available in the draw process, t
_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Carlos Sanches Sent: Tuesday, July 15, 2008 12:23 PM To: OpenSceneGraph Users Subject: Re: [osg-users] How to take a picture of my scene? I continue to render a black screen :( How do I have to use de postdrawcallback ? I m using this code: bool myKeyboardEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa) { switch(ea.getEventType()) { case(osgGA::GUIEventAdapter::KEYDOWN): { switch(ea.getKey()) { case 'a': image->readPixels(0,0,200,200, GL_RGB,GL_UNSIGNED_BYTE); osgDB::writeImageFile(*image,"capture.bmp"); return false; break; ...
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