From: Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: (slightly OT) DJGPP Allegro is faster then MingW32 Allegro?
Date: 29 Jan 2001 13:46:58 GMT
Organization: Aachen University of Technology (RWTH)
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[Could you all please reduce quoted content to the part you're
actually referring to? Thanks.]

Tom St Denis <stdenis AT compmore DOT net> wrote:
>> On Sun, 28 Jan 2001 20:35:53 GMT, Tom St Denis <stdenis AT compmore DOT net>
>> wrote:
[...]
>> >I get 850,000 hlines per sec with DJGPP and 400,000 with MingW.
>> >
>> >Any clues to why it's slower?

> Well it gets wierder.  My 3d library+test runs at the same fps in djgpp as
> ming.  It's only tests/test.exe that differs.

That latter one is not a surprise at all, IMHO. Unless yours is an
extremely strange 3D library, it's almost certainly going to be
limited by other factors than execution speed of single API calls. Or
if it's limited by API call processing, then the API call it
bottlenecks is hardly ever going to be hline(). 3D textured and
lighted polygons exercise other functions much more heavily.

Actually, I'd be surprised if a 3D library ever executed a single call
of the hline() method. Horizontal lines simply don't happen often
enough, in 3D, to make it worthwile checking for this special case and
calling the specialized hline() for them.
-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.