[vtkusers] Display list...

[Berk Geveci]

Unless you have ImmediateModeRendering turned on, VTK automatically uses
display lists. So that is not your problem. Are you using a lot of actors ?
There were speed issues with using a large number of actors in VTK. Some
of these have been fixed since 3.2. You might want to download a nightly 
distribution (if you are not using Windows, you have to use CVS and compile 
VTK yourself). If you don't want to upgrade, you can just append the tubes 
together
(which will probably take some time and slow down the startup) and display 
them
as a single actor.

-Berk

>From: "Jean-Philippe Guyon" <piloo at rad.unc.edu>
>To: <vtkusers at public.kitware.com>
>Subject: [vtkusers] Display list...
>Date: Fri, 19 Oct 2001 13:32:12 -0400
>
>Hi,
>
>I have to load a bunch of tubes ( vessels ) in the 3D scene for my program,
>and when I link all that stuff to the renderer, rendering becomes really
>slow ( figures: 8 000 points => more or less100 000 triangles ) and I need
>the whole stuff to be pretty much interactive. A probe is supposed to move
>inside the scene, according to the data send by a magnetic tracker.
>So I'm wondering if there is a way to use the openGl display list via vtk
>??? If not, what's the best solution in your opinion ( decimation, and such
>things... ) ??
>
>thanks for your help :))
>
>Piloo ;op
>
>ps: I'm also using some transforms on these tubes ( scaling,
>translation... ) during initialization... but once loaded tubes are static.
>Could it be the source of the lag ???
>
>_______________________________________________
>This is the private VTK discussion list.
>Please keep messages on-topic. Check the FAQ at: 
><http://public.kitware.com/cgi-bin/vtkfaq>
>Follow this link to subscribe/unsubscribe:
>http://public.kitware.com/mailman/listinfo/vtkusers


_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp