http://bugs.winehq.org/show_bug.cgi?id=6955
--- Comment #26 from Paul "TBBle" Hampson Paul.Hampson@Pobox.com 2009-12-08 06:39:20 --- (In reply to comment #25)
However there is an however, rendering suddenly gets everything awfully slow. Which isn't that nice when you have a decent graphics card (a GeForce 9600GT in my case).
That's because the software vertex blending implementation is doing on the CPU work that should normally be done on the GPU.