From:	Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: (slightly OT) DJGPP Allegro is faster then MingW32 Allegro?
Organization:	Pin Eight Software http://pineight.8m.com/
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NNTP-Posting-Date:	Mon, 29 Jan 2001 06:10:16 GMT
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Date:	Mon, 29 Jan 2001 06:10:16 GMT
To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

On Sun, 28 Jan 2001 20:35:53 GMT, Tom St Denis <stdenis AT compmore DOT net>
wrote:

>When I build tests/test.exe with either I find that hline is faster in DJGPP
>than MingW32 despite my card having "accelerated solid hline functions" (as
>reported by allegro).
>
>I get 850,000 hlines per sec with DJGPP and 400,000 with MingW.
>
>Any clues to why it's slower?

What did you have running in the background?  Windows 9x gives much
more time to DOS tasks than Win32 tasks.  Or did you run the DJGPP
version from plain DOS?

How well optimized is driver support for your card's fill (aka solid
hline) function?

There's a lot more overhead on some calls under plain old DOS than
there is on WinDOS.

You might want to take this up with the Allegro mailing list:
  http://www.talula.demon.co.uk/allegro/maillist.html
as they likely know much more about Allegro (especially the non-DJGPP
ports) than we do.

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