[osg-users] Large dynamic high-res terrain overlays?

Robert Osfield robert.osfield at gmail.com
Tue Sep 18 01:33:30 PDT 2007

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.


On 9/18/07, J.P. Delport <jpdelport at csir.co.za> 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
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