Hi, I'm working with OpenSceneGraph 3.4.0 on a kind of GIS app.
I'm rendering the ground using textured HeightField square. My scene graph is cut in two part, a group node with all the textured HeightFields, and another containing all my 3D objects (sorted in a quadtree). I've got a lot of thoses textured heightfield squares, they come in different resolution, and will be soon put into a nice QuadTree with LOD. I would like to use Occlusion Culling to avoid to render object hidden behind those Heightfield. As far as I know there is both OccluderNode and OcclusionQueryNode which can be used for culling. I tried to use OccluderNode but I can't convert HeightField to ConvexPlanarOccluder. Then I tried OcclusionQueryNode (root -> occlusionQueryNode -> QuadTree -> objects) but it seems to be too powerful : everything is culled, even the heightField part which is not inside the occlusionQueryNode ... :( I came to realize that I barely understand how to use OcclusionQueryNode and OccluderNode, so I would like to have your advice : Is it a good idea to use one of thoses ? And how can I use them properly ? Thank you! Cheers, valerian ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=67739#67739 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
