Ian Romanick wrote:
Only if you sync to vertical refresh. I wouldn't propose that... From my point of view it's a scheme to make pageflipping work on hardware where the pageflip command isn't instantaneous. When this is the case you have to wait on the pageflip, which is boring, or start rendering immediately (a clear to the new backbuffer, which is still being displayed, which is bad), or have a third buffer to look at --- triple buffering.On Fri, Oct 25, 2002 at 10:39:23AM -0600, Jens Owen wrote:I've heard you and others talk about triple buffering a few times, and I'm wondering if you can fill me in on a few details. Is the primary motivation for a 3rd buffer to aliviate delays associated with vertical refresh? Using a page swapping method, I would guess the pointers for front, back and display buffer would look like:
Yes, that is a very nice summary of triple buffering. You've also caught on to the potential problem with it. If your frame rate exceeds your refresh rate, you're toast.
Keith
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