Okay, I have to try it. Could you give me any code or literature to implement this for (first) one ray?
Thanks, Roland -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Robert Osfield Gesendet: Dienstag, 7. Oktober 2008 14:30 An: OpenSceneGraph Users Betreff: Re: [osg-users] Linesegment, shader Hi Roland, On Tue, Oct 7, 2008 at 1:03 PM, Leitner, Roland <[EMAIL PROTECTED]> wrote: > Sorry ;) I need the results (distance map) back to the cpu. If you need the results back on the CPU then you will most likely be best to use a CPU based algorithm. You could render to depth buffer and then read this back but the round trip to the graphics card is likely to blow all the speed advantages of using the CPU for depth testing. >From OSG-2.6 onwards the OSG has KdTree support that can help with speed of intersection testing. Or alternatively write your own custom intersection codes. Robert. _______________________________________________ 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
