I might be able to help you with this. Is your source something you can share, possibly off-list?
On Wed, Jun 22, 2016 at 9:55 AM, Valerian Merkling <[email protected]> wrote: > 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 > -- Chris 'Xenon' Hanson, omo sanza lettere. [email protected] http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Legal/IP • Code Forensics • Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • LIDAR • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel (775) 623-PIXL [7495]
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