this is the first time I ever read the term "single surface objects".
Any real references?
Also, can we see a .cap that slows down when spawning those bullets? in my tests, my 2Ghz Intel Core Duo with crappy intel video behaved really well up untill 3000 bullets, then dropped to 40fps at 4000 bullets.
No shaders, of course. Crappy intel video card. With a horizontal blur, it was already at 10fps at 1500 bullets.
I'd say it's fast enough, even for bullet hell shmups.