Re: [AD] Two monitors... anyway hehe

[aj <aj@xxxxxxxxxx>]

i think the multi-monitor "solution" is not an easy one.
as there is so many options.

monitors vs desktops vs virtual screens  etc.

this multi-monitor thing does not fit well with the "allegro is a games 
programming lib"

i dont think this approach is going to work,  trying to convince allegro 
developers to write multi-monitor support for allegro.

it might get done if it went the other way around....  someone (you!) write 
a multi-monitor program,  in linux or win32  then document ever single 
thing in it..
then reduce it to the bare minimum,  then present it to the allegro 
developers, and say "here,  i have a working multi-monitor app"  could it 
be intergrated into allegro.
that is the only way i truly see it actually getting done.


my ideas on how to do it.....
have another complete allegro program running as the second monitors 
SCREEN,  then create an inter process communitions (IPC) channel between them.
then send BITMAPs from the main program(1st monitor) to the dummy(2nd 
monitor) program to just blit them.

this should be do-able...


aj.











> Hi Eric,
>
> What I really need about this two monitors stuff is
> the following:
>
> My application runs on "fullscreen" mode, now I was
> asked to do the same over the second monitor. There
> are several options to fit the requirements, from best
> to worst (that is, if I can't do 1) then do 2), and so
> on:
>
> 1) I could select which monitor to send BLITs commands
> and then allegro blits bitmaps or does it's stuff over
> it. The other monitor stays with the same image,
> frozen until you focus it and then you continue
> BLITting to it back and forth. I thought I could do
> this creating two "allegro windows", one on each
> monitor device, and then setting it on the
> "allegro_wnd" variable back and forth.
>
> 2) I do a "set_gfx_mode" command over the "other
> monitor", rebuild the entire screen, but the other
> remains unchanged until I refocus it, with the same
> approach ("set_gfx_mode", load background bitmap,
> etc).
>
> 3) I do a "win_set_window()" and then an
> "allegro_init" call. I used 2 and 3 approaches but
> only worked the 3) one and I guess the problem about
> "focus windows" still exists.
>
> 4) The two "monitor devices" or windows has their own
> instance of the allegro library running. I guess this
> is not possible because of allegro limitations on
> concurrency... is that right?
>
> 5) Be my guest! You are the one who knows this port's
> internals! hehe
>
> Count on me if you can think of a patch or approach
> that I could test, just send it to me and I will test
> it ASAP.
>
> IMHO, having multiple monitors capabilities on Allegro
> (I guess almost every platform it runs has this
> capability) would be a very useful add-on.
>
> Thank you very much, in advance,
> Hugo Caro
>
>
>
>
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