Hi,
First, please put some subject to your post. Maybe take a look into osgPPU (http://projects.tevs.eu/osgppu) this is a nodekit which is what you looking for. It helps you to make multipass (render to texture and then as input to next texture) in a very simple way, without creating additional camera nodes. Best regards, Art --- [EMAIL PROTECTED] schrieb: > Hi all, > > I have a problem in which I have to do multipass > rendering. When I say > multipass, it's in fact rendering to a texture which > is the input for the > next rendering, etc... and that about a hundreds > time... I could explain > why, but only if necessary, but let's say that no > there is no better way > than doing a cascaded rendering with that amount of > steps, and in fact, > that's sphecifically why I'm doing it on GPU... > > Moving on to OSG related problem, it seems to me > that every time you want > to render to a texture you have to add a Camera > node. I've heard that you > could maybe do a little bit better, by having only > one Camera node, but > several paths leading to it with differents > statesets. But in my case, I > can't have only one camera, and several statesets, > because each time, I > have to change > the fbo to render to, that can only be done by > adding a new camera, with a > different texture to render to ... > > So my question is, is there a better way to do this > kind of multipass > rendering, than adding a camera for each step ? > (better in the sense of > less costly ...) > I'm asking this because when I look at the stats, > drawing takes about 60 ms, > and gpu time is 80ms. I expected the value for the > gpu, because for each > camera, there is a fragment shader associated. But I > didn't expect the > draw time to be so high, and I really think that is > because of the way I'm > doing it (too many nodes maybe ... :( ) > > Thank you all > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > __________________________________ Ihre erste Baustelle? Wissenswertes für Bastler und Hobby Handwerker. www.yahoo.de/clever _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
