[SDL] vertical retrace in SDL

[Daniel Vogel]

> It's possible.  Anybody know the details of the Win32 OpenGL drivers?

Usually it is a checkbox. For NVIDIA cards you can use NVMAX to toggle
the setting.

> The GL equivalent does not wait for retrace.  Waiting for
> retrace isn't
> supported on any of the Linux drivers, that I know of.

For NVIDIA it is an environment variable that is documented somewhere on
NVIDIA's site. I think it is possible with DRI to wait for retrace via
an environment variable too.



                         Daniel Vogel, Programmer, Epic Games