Are you using perspective view dependent mode of OverlayNode?
On 9/18/07, J.P. Delport <[EMAIL PROTECTED]> wrote: > Hi, > > the source high-res imagery of the terrain is about 4degx4deg and blue > marble data for the rest of the globe. The things they want to overlay > are simple lines and filled polygons (so render to texture/textures > should be OK), but can now extend over say 500kmx500km. So when I use an > overlaynode and they zoom in quite close to the terrain, e.g. the lines > in my original generated texture become massively wide. > > jp > > Robert Osfield wrote: > > Hi J.P. > > > > How big is the source imagery you users are wanting to use? If its > > large be prepared to roll your sleeves up and start implementating > > some advanced texture paging techniques. > > > > Robert. > > > > On 9/18/07, J.P. Delport <[EMAIL PROTECTED]> wrote: > >> Hi, > >> > >> I am successfully using 2xoverlaynodes for overlays onto a large terrain > >> database. The overlays are dynamic (i.e. can change per frame). The > >> texture coord generation of overlaynode/texgennode are essential, as it > >> makes the overlay follow the terrain. > >> > >> The users of the app are creating larger and larger overlays and the > >> resolution of the overlay texture is becoming a problem. > >> > >> Is there a technique that someone can advise me on/point me to that can > >> be used to create either massive overlays or multitudes (>> texture > >> units) of smaller ones using OSG? > >> > >> thanks > >> jp > >> > >> -- > >> This message is subject to the CSIR's copyright terms and conditions, > >> e-mail legal notice, and implemented Open Document Format (ODF) standard. > >> The full disclaimer details can be found at > >> http://www.csir.co.za/disclaimer.html. > >> > >> This message has been scanned for viruses and dangerous content by > >> MailScanner, > >> and is believed to be clean. MailScanner thanks Transtec Computers for > >> their support. > >> > >> _______________________________________________ > >> 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 > > > > -- > This message is subject to the CSIR's copyright terms and conditions, e-mail > legal notice, and implemented Open Document Format (ODF) standard. > The full disclaimer details can be found at > http://www.csir.co.za/disclaimer.html. > > This message has been scanned for viruses and dangerous content by > MailScanner, > and is believed to be clean. MailScanner thanks Transtec Computers for their > support. > > _______________________________________________ > 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
