Originally posted by: TheSnowman
Yeah, a framegrab from the videocard will always be one full framebuffer, where tearing is the result of the the framebuffer being swaped in the middle of the monitor's refresh. so you can't rightly get a framegrab to show tearing, but you can take two framegrabs and paste parrts of them together to simulate the effect, which looks like:
http://www.sunflower.com/~kyleb/novsync.jpg