> > > When the blitting-operation is done in sync-mode, then it is done
> > > immediately. If it is in async-mode, then all blitting-operations
> > > that are performed to the given blt-argument to ggiBltFlush() at
> > > _once_, when calling ggiBltFlush().
> > If I get you right, you would queue the requests in Async-Mode, and then
> > batch-execute them - yes ?
> > I mean you may not modify any source or destination area while such an
> > async blit is queued (for sources this can be helped by copying them,
> > but that would be real bloat) - won't that be confusing ?
> A few mails ago you said:
>> Basically the idea is that you define a BOB and ask libblit to cache
>> it for you in some way so that it can be blitted as fast as possible
>> later on
> You can do that very efficiency in that way, no?
Umm - then I don't get what that Sync/Async is supposed to do.
What I was talking about is having objects that get blitted to screen rather
often (like players in 2D games, images of buttons in GUIs and such) get
"registered" somehow to be blitted fast on demand.
Delaying the execution of some queued blits (which is what I think this
async stuff does) doesn't help me with that.
I need a bunch of registered bobs to choose from (not a single queue that
I build up and that can be flushed at some time) and I usually want to
blit them immediately.
Let me explain what I meant with some sample code from a primitive 2D
game:
main() {
register_bob(player);
for (x=0;x<MAX_FOES;x++) register_bob(foe[x]);
while(!quit) {
get_coordinate_updates_from_player_and_foe_ai();
draw_background();
blit(player,playerx,playery);
for (x=0;x<visible_foes;x++)
blit(foe[visfoe[x].foenum],visfoe[x].x,visfoe[x].y);
ggi_draw_other_stuff_like_HUD();
ggiFlush();
}
}
How would one do that with the above thing ? Note, that I might want to draw
in between blitting the foes with normal GGI functions like placing a nice
fat X with ggiDrawLine on the foe that is currently locked to the missile
guidance system or something.
CU, Andy
--
Andreas Beck | Email : <[EMAIL PROTECTED]>
