I set a breakpoint at drawArrays to verify this, and it's indeed rendering 10,965,264 vertices. It's using neither indexing nor triangle strips, so it uses no

I set a breakpoint at drawArrays to verify this, and it's indeed rendering 10,965,264 vertices. It's using neither indexing nor triangle strips, so it uses no post transform cache, and the vertex count is needlessly inflated by at least 3x. But that's still a lot higher than I thought it'd be.