Hi Paul -- The "too many gpu cycles" requirement is a little vague. I assume as long as you still hit 60Hz, then any algorithm is fair game.
You could use MRT (multiple render targets) in a shader to create both a normal image and a glow map, then do some kind of osgPPU-like post processing to apply a Gaussian blur to the glow map along the lines of what is described in GPU Gems. Then merge the normal image and blurred glow map in a final render pass. A client of mine implemented something like this not too long ago based on some small examples I wrote for them, and the visual effect is quite nice. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com +1 303 859 9466 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Paul Griffiths Sent: Thursday, May 14, 2009 2:20 PM To: [email protected] Subject: [osg-users] Ideas for glow effects on 3D objects Hi, Im creating a music application, below is a screenshot, im after a glow effect for my enabled buttons. does anyone have any ideas? Anything goes just don't want to use up too many gpu cycles though. [Image: http://img401.imageshack.us/img401/8212/pichbu.jpg ] ... Thank you! Cheers, PaulG ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12150#12150 _______________________________________________ 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
