OEJ: OK I boosted up the shapes to > 2000 and it starts to slow down and jerk a bit. This is simply because it can't render everything so frames are skipped and the logic catches up in a jump. I DO notice tearing with Flip 0 after all in yours (when I boost the shapes right up to say 5000 it's easier to see on faster objects) and mine (when I added more UFOs), but it goes away with the other Flip flags in full-screen BUT NOT in Windowed mode (this was the original vertical tearing bug I posted that Skidracer made a fix for that I put in my latest UFO test) i.e. all flags show tearing.
Kuron and others must be seeing tearing too in windowed mode if they boost the shape count up as there is nothing in BlitzMax to stop it.
Kuron and others must be seeing tearing too in windowed mode if they boost the shape count up as there is nothing in BlitzMax to stop it.