From:	Shawn Hargreaves <Shawn AT talula DOT demon DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Locked Streams in Allegro
Date:	Thu, 5 Mar 1998 19:00:17 +0000
Organization:	None
Message-ID:	<JqChODABZv$0EwDu@talula.demon.co.uk>
References:	<01bd3a85$0198e2a0$0201a8c0 AT technoid>
	<b8tF7EA+KJ$0EwBF AT talula DOT demon DOT co DOT uk> <01bd46de$b9adc8a0$0348a5c6 AT technoid>
NNTP-Posting-Host:	talula.demon.co.uk
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Luke Bishop writes:
>I plan on using it for a 3D positional background sound-effect library for
>my 3D game.  The routine prototype checks to insure that it doesn't eat
>timers, and will scale itself down in execution length if it takes too
>long.  The problem is, in conjunction with an optimized rendering pipeline,
>it is almost impossible to get real-time buffer fills.

It gets easier the bigger you make your buffers. Can't you just scatter
calls to your stream update routine at regular points during the drawing
code? A little bit clunky, but I think that is the only really reliable
method.

Of course you can go on using a timer interrupt update if you prefer,
but be warned that this could have problems if the interrupt goes off at
the wrong time (_extremely_ unlikely, but possible), and that it is very
likely not to work with future drivers for other soundcards.


--
Shawn Hargreaves - shawn AT talula DOT demon DOT co DOT uk - http://www.talula.demon.co.uk/
"Pigs use it for a tambourine" - Frank Zappa

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