Stereo sync

[Thant Tessman]

In article <17848 at thorin.cs.unc.edu>, certain at hatteras.cs.unc.edu writes:
> I am try to get a stereo display program to work on an Iris.  The problem
> that I am having is that to stereo plate flips between the left and right
> eye at 60Hz, so I need to make sure that I am alternating eyes with each
> buffer swap.  Unfortunately, swapbuffers() is non-blocking, so that if I
> can actually draw faster than 120Hz, I get two updates per buffer swap,
> which has the effect of always just showing one eye.  Is there a way to
> make swapbuffers() to be blocking?  Is there a way to know when the screen
> refresh happens?  What have other people done about this problem?  I have
> just subscribed to this newsgroup, so I don't know if this problem has been
> addressed previously.

gsync() might be what you need, at least to block on a refresh.

thant