HI Mathias, Wow I haven't ever thought of SceneGraphOrderRenderBin before. I have just done a quick review of RenderBin and CullVisitor and while it won't be trivial to implement (it requires mods to CullVsitor/StateGraph/RenderBin and StateSet) it should be too difficult to implement, and it would certainly make certain types of techniques far simpler to create and fast at runtime too.
Leave this with me, once I completed some other work I'll have a look at the implementation. Robert. 2009/5/11 Mathias Fröhlich <[email protected]>: > > Hi, > > On Monday 11 May 2009, Robert Osfield wrote: >> > However, using setRenderBinDetails seems problematic in my admittedly >> > quirky case, because I'm going to need two new render bins for each >> > object I render with this technique. I need to make sure the two steps >> > happen one after the other without anything else being drawn in between. >> > >> > The more I talk about it the more it sounds like I just need to write a >> > custom drawable... Any thoughts on that approach? >> >> The OSG will just create a single rendering bin for each bin number >> you use, RenderBinDetails just selects between them so there should be >> no need for every object you render having it's own bin. > Well, as far as I understand, and as far as I have my own applications for > such kind of scenes. You will need an own render bin number for each object > if every object just depends on the previous object to be rendered before. > Else the StateSet sorting might reorder the drawables - true? > > Anyway, Robert, I believe it would help to have a 'SceneGraphOrderSorted' > renderbin where the sorting order of the of the child nodes is just taken. > Can we have such a beast? > >> Using a custom drawable would very rarely be required for this type of >> work. > Well, this might be an option in this case also. > I have such a problem too. I have a huge amount of small objects that require > to be drawn in a particular order. Putting them into an own renderbin > introduces a noticable runtime overhead compared to the defaullt renderbin > execution time. > So if there is no way for such a scenegraph ordered renderbin, a custom > drawable might be something to at least think about. > > Any chance for such a RenderBin where the scenegraph order is preserved? > > Greetings > > Mathias > > -- > Dr. Mathias Fröhlich, science + computing ag, Software Solutions > Hagellocher Weg 71-75, D-72070 Tuebingen, Germany > Phone: +49 7071 9457-268, Fax: +49 7071 9457-511 > -- > Vorstand/Board of Management: > Dr. Bernd Finkbeiner, Dr. Roland Niemeier, > Dr. Arno Steitz, Dr. Ingrid Zech > Vorsitzender des Aufsichtsrats/ > Chairman of the Supervisory Board: > Michel Lepert > Sitz/Registered Office: Tuebingen > Registergericht/Registration Court: Stuttgart > Registernummer/Commercial Register No.: HRB 382196 > > > _______________________________________________ > 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
