Do you really belive that you are using OpenGL in a most efficient way? Do you thing VBO or VA will save your performance? NVIDIA promisses 900 milions vertices/second (e.g. 300 mil triangles/sec), is it true? OpenGL performance analyzer enables you to make tests by yourself. You can find the cost of switching between textures, display list speed-up, etc.
Created attachment 108034 [details] media-video/oglperf/oglperf-9999.ebuild
We are not adding live VCS stuff, sorry. Feel free to reopen with an ebuild for a release or snapshot. http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=3&chap=1