[gameprogrammer] Re: Overlay on windows and mac

on the sdl list i saw people talking about YUV overlays, is this a different
topic or the same?

----- Original Message ----- 
From: "Bob Pendleton" <bob@xxxxxxxxxxxxx>
To: "Gameprogrammer Mailing List" <gameprogrammer@xxxxxxxxxxxxx>
Sent: Tuesday, August 31, 2004 11:12 AM
Subject: [gameprogrammer] Re: Overlay on windows and mac


> On Tue, 2004-08-31 at 11:37, Kevin Fields wrote:
> > This was a topic discussed on another mailing list quite a while ago.
> > I got a response from someone that explains how to do it.
> > I'll forward that email directly to you.
> > I doubt Bob would like it posted here, as it seems a little off topic to
me.
>
> Games use overlays. Post it here.
>
> Bob Pendleton
>
> > Just send me the address to send it to, and I'll forward it along.
> >
> > Kevin
> >
> >
> > From: "Seung Chan Lim" <list@xxxxxxxxxx>
> > Reply-To: gameprogrammer@xxxxxxxxxxxxx
> > To: <gameprogrammer@xxxxxxxxxxxxx>
> > Subject: [gameprogrammer] Overlay on windows and mac
> > Date: Mon, 30 Aug 2004 17:42:29 -0400
> >
> > Hello all,
> >
> > I'm trying to see if I could possibly a simple pice of code that can
draw an
> > overlay
> > on the desktop read from an image like PNG, for example with alpha
values.
> >
> > The overlay will have to draw itself directly on top of the desktop and
> > erase itself
> > completely when I want it to. It should also not leave weird artifacts
on
> > other windows.
> > I would also like to have the option of letting my mouse clicks go
through
> > so that the
> > windows underneath will receive events. Of course, I'd also like to
> > intercept
> > events (i.e. clicks on my mage) if I choose to.
> >
> > I'm assuming this is something that I'd have to use double buffering and
> > draw directly
> > onto the video hardware in order to do correctly?
> >
> > Is this true? Are there any pointers you guys can point me to?
> >
> > I'm looking for ways to do it both on windows and on mac, and they can
use
> > compeltely different technologies (i.e. open GL or Direct X on windws
and
> > some
> > native cocoa/carbon stuff on the mac, etc...)
> >
> > any help would be greatly appreciated
> >
> > thanks! :)
> >
> > slim
> >
> >
> >
> >
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> -- 
> +--------------------------------------+
> + Bob Pendleton: writer and programmer +
> + email: Bob@xxxxxxxxxxxxx             +
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