Originally Posted by Stephen Warren
That makes sense; I believe OpenGL sync to VBLANK only syncs to a single display device's VBLANK, even when rendering to a region of the desktop/X display/screen/...
Are ypu sure?
I have two screens connected, one is 50Hz (projector) the other 60Hz (17" screen)
$ export DISPLAY=:0.0
251 frames in 5.0 seconds = 50.022 FPS
$ export DISPLAY=:0.1
303 frames in 5.0 seconds = 60.465 FPS
Seems sync to vblank is dependant on the screen used...