Jason Daly wrote: > > If you're familiar with OpenGL, osg::DrawArrays is equivalent to > glDrawArrays(), osg::DrawElements is equivalent to glDrawElements(). > The first uses the vertex arrays directly, the second uses an index > array to select vertices from the vertex arrays.
Thank you. I had it in my mind that glDrawElements() was very slow compared to ranges, and it was recommended that a large geode was broken down into a number of osg::DrawArrays What about using 'out of order' osg::DrawElements to group points by location rather than in the vertex order, for easy point picking - is that a good idea? > Robert's point is that repeatedly altering data and recompiling the display > list is expensive. Yes (but still better than using glBegin/glEnd ;-) - I will just be editing the points interactively so compared to the speed of the intersector this shouldn't be a problem. thank you Martin _______________________________________________ osg-users mailing list http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ------------------ Post generated by Mail2Forum[/quote] ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=22261#22261 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
