Hi, I was wondering was experiencing the same odd behavior I am. I created a visitor that essentially iterates through all the textures of a terrain scene graph to change their texture filtering from bilinear to trilinear.
When I replace the filtering from bilinear to trilinear, I get a boost of 50% in performance. If I completely bypass my texture visitor then I get a bad performance. This is contrary to what I've been told. I was under the impression tha bilinear filtering was essentially free (as far as performance goes), and that trilinear was a little more expensive (but fairly negligeable). This is not was I am observing. I've tried this on several different graphic cards (9500 GT, 8800 GTX, 260, etc). The driver version I am using is v195.x but it also happens on 185.x. Can someone explain this to me? Someone told me that the new GPUs are built with trilinear in mind, and therefore would perform better is trilinear. Is this true? Regards, Cheers, Guy ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=24104#24104 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
