I tried with the latest build 4.0-862 as well as 4.0-854. G-Sync has functioned fine with all my other software/games that I have that have no v-sync toggle. As long as it goes full screen g-sync engages. I've tried all the back ends with full screen checked with v-sync toggled both on and off. It could be related, but I'm not sure.
I'm using:
Nvidia GTX 770 using latest beta drivers 334.67
ASUS VG248QE with G-Sync upgrade.
It is supposed to be a driver feature that works with every game, but I've only had it for a couple days. There are several games in my steam collection that don't work with it as well. So it's not universal at the moment.
Mame works awesomely with g-sync if you are looking for an open source example that works well with it. I found this thread on the mameworld forum when I was researching my g-sync purchase: http://www.mameworld.info/ubbthreads/showflat.php?Number=316328
I'm using:
Nvidia GTX 770 using latest beta drivers 334.67
ASUS VG248QE with G-Sync upgrade.
It is supposed to be a driver feature that works with every game, but I've only had it for a couple days. There are several games in my steam collection that don't work with it as well. So it's not universal at the moment.
Mame works awesomely with g-sync if you are looking for an open source example that works well with it. I found this thread on the mameworld forum when I was researching my g-sync purchase: http://www.mameworld.info/ubbthreads/showflat.php?Number=316328
Quote:As far as I understand, I think there's nothing special to implement on the MAME side. As it is now, just running with -throttle -nosyncrefresh -nowaitvsync -notriplebuffer already makes D3D Present() to be called with the D3DPRESENT_INTERVAL_IMMEDIATE flag. You should only make sure that a Gsync capable video mode is chosen for the desktop.