Hi Bruce, I've done lots of 3D video work with the OpenSceneGraph/Present3D over the years. There is even an example osgstereoimage that shows how to do it using two subgraph each with their own NodeMask which is matched to the left eye/right eye cull masks.
Robert. On Fri, Feb 12, 2010 at 1:08 AM, Bruce Wheaton <[email protected]> wrote: > I'm about to drop OSG into an app and I'm looking at how to do various > things. The built-in stereo support is great, but I'm not sure how to do > something that's easy in my current code - handle pre-split images. > > I have to take a variety of images, mainly in streams, and handle them > correctly in the left and right eye. The formats I deal with are: > > 1. Dual-stream, for instance two images, or two tracks in a Quicktime movie > or AVI file (3D Blu-ray too, someday), > 2. Left-Right, > 3. Top-Bottom, > 4. Possibly, interleaved. > > Right now I've dealt mostly with 2 & 3, by padding two sets of tex coords > along with 3D images. I intend to deal with 1 and 4 by splitting textures, > maybe using 2 FBO attachments. > > The issues/options seem to be: > > Draw the images billboarded and at screen depth, so there's no extra > parallax introduced. > > It would be great to be able to mask or draw a frame 'in-front' of the > image, even though it's at zero, so the edges appear to be at the same depth > as the content (or can be manipulated). > > Then I can either use a cull callback, since I believe cull runs once per > eye, and reset tex-coords and/or which texture (or attachment of an FBO) to > use, > or place a duplicate item of each 3D texture in the graph, set it correctly > on update, then set the stereo cullsettings correctly. > > Any suggestions? Did I miss a better technique? > > Regards, > > Bruce Wheaton > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
