Re: [Plib-users] Multithreading in FG

[Hemalatha S. <hem...@re...>]

 =A0=0AHi,=0A"I've had pretty good luck synchronizing 5 "slave" displays fr=
om a 6th "master" machine using the standard FlightGear facilities"=0A=0AIn=
 what sense have you termed the machines as "master" and "slave", i.e, how =
are U using slave and master concept(Have U done something in h/w side if y=
es what). And please tell me how you sync to vblank.=0A=0AAwaiting your rep=
ly.=0A=0ARegards,=0AHemalatha.=0A=0AOn Wed, 30 Aug 2006 Curtis L.Olson wrot=
e :=0A>Hemalatha Sharma wrote:=0A>>=0A>>  Hi,=0A>>Yes U are correct!=0A>>Th=
ere are 3 separate physical displays each with it's own program and each re=
ceiving network input from one system(each system has to process and render=
 independently)=0A>>=0A>>yes "send a done signal" mean that the left and ri=
ght programs send a=0A>>network message to the center system( we are using =
here a flag=3D0/1 concept)=0A>>=0A>>The main problem if they are not synced=
 is -All three views keep updating in different rates which is not good to =
visualize)=0A>>By synchronization i mean all three views should update at s=
ame rate=0A>>[ie when u are rolling imagine how center ,left ,right view wi=
ll look updating at diff rate]=0A>>=0A>=0A>I've had pretty good luck synchr=
onizing 5 "slave" displays from a 6th "master" machine using the standard F=
lightGear facilities.  If you sync to vblank and have enough horse power to=
 sustain 60 fps on all machines, then this ends up working really well.  I'=
ve done it with monitors and LCD projectors.  On one simulator we did this =
with 6 forward "monitor" type displays.  Note that you can get away with a =
bit of error with monitors because there is a gap between displays that hel=
ps hide discrepancies.  That's much harder with tiled projected displays.=
=0A>=0A>Curt.=0A>=0A>-- Curtis Olson        http://baron.flightgear.org/~cu=
rt=0A>HumanFIRST Program  http://www.humanfirst.umn.edu/=0A>FlightGear Proj=
ect  http://www.flightgear.org=0A>Unique text:        2f585eeea02e2c79d7b1d=
8c4963bae2d=0A>=0A