Hi Peter, If you build your data as separate osg::Geometry per side and then set the opaque rendering bin to sort front to back then it'll be able to graphics card to use z early culling of fragments.
Robert. On Wed, Nov 24, 2010 at 5:00 PM, Peter Wrobrl <[email protected]> wrote: > Hi, > > this is rather a technique question then related to an osg feature. > I create a VBO from lot of Points ( ( 50-100 ) ^ 3 ) in the shape of a cube. > I create them with three nested loops, one per Axis, so that first I get a > line of Points in x-Direction, then draw the next lines to shape the xy > plane, and finally draw the volume in z direction with the next xy point > planes.Rotating arround this cube with the camera, my Frame Rate drops > significantly, when the Points get drawn from Back to front due to Overdraw. > I can't just flip the whole entity in 90 degree steps dependent on the camera > position as the Points have different Vertex Colors set, so one would nottice > the flipping. > > How can I build an efficient structure so that those points get always drawn > from Front to Back ? Are there any helpful utilities for sorting, or maybe > other Tricks ? > > > Thank you! > > Cheers, > ParticlePeter > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=34040#34040 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
