When I was testing this with quads, I found that them being untextured actually made them slower than the textured variety. Didn't make a lot of sense to me, but hey, that's computers for ya.
So yeah, it's still surface dependent. Or my tests indicated such, in any case. I don't know how videocards work, but I'm guessing it still sees a plain colour as a texture.
So yeah, it's still surface dependent. Or my tests indicated such, in any case. I don't know how videocards work, but I'm guessing it still sees a plain colour as a texture.