We did some tests with display lists and VBO's. For our scene's usually display lists outperform VBO's because they have less cpu overhead in the draw traversal. There is only one point (which is vendor/driver specific, we use nvidia) is that with models with a large amount of vertices (extract amount depends on other vertex data like normals, colers and uv's) it looks like the driver keeps the data on system memory instead on the gpu if we choose to use display lists. This will kill the performance a lot. In our tests there was a clear threshold value to the amount of vertices where you see this performance changing.
But this looks so driver and vendor specific that it should be better to do it the way it is so like Robert said just to individually set the setting for each Geometry. Cheers, Pjotr ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=60811#60811 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
