Hi Peimansh, The two options for off screen rendering are a PixelBuffer context or FrameBufferObject, if you have an existing on screen window in your application then using a FrameBufferObject becomes preferable. The way to do it would be to set up your viewer's off screen Camera with FBO settings and a custom final draw callback to do the read to main memory. The read will be more efficient if you use a pair of PixelBufferObjects - the osgscreencapture example illustrates this in action.
As you are already using CompositeViewer the most natural thing to do would be to have a dedicated View with it's master Camera as the offscreen camera, this way you can control the Camera's view matrix in straight forward manner in the same way to the rest of the Camera's. Also during debugging having the option of making this Camera an onscreen one would give you means to visually QA things as you go along. Robert. On 16 January 2016 at 10:17, Peiman Shakeri <peimansh2...@gmail.com> wrote: > Hi, > > I am newbie in osg > based on example's I can do off-screen rendering and auto-screen-capture then > make a movie from my scene graph with single view and camera > > when I use composeitview ,these are my views and cameras: > > topview->topcamera > leftview->leftcamera > rightview->rightcamera > captureview->capturecamera > > I can capturing and then make a movie too but no one should can see my > captureview ,its just for capturing! > > > how can I off-screen rendering on my capture camera in captureview ? > > > Thank you! > > Cheers, > peimansh > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=66032#66032 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
