From: "Elias Pschernig" <f DOT x DOT gruber-museum-arnsdorf AT magnet DOT at>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro : MMX or not MMX ???
Date: Tue, 23 Feb 1999 18:14:46 +0100
Organization: magnet Gesellschaft für digitale Kommunikation m.b.H
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To: djgpp AT delorie DOT com
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>Hello everybody,
>    When I run allegro\tests\test.exe , the 'Profile 3D' option finds
>out that the 3D routines display the same number of polygons per second
>whether the 'MMX option' is enabled or not. In some cases (RGB Gouraud
>Shading with 8bpp depth colors), it finds out that the MMX routines are
>slower than the 'no MMX' ones. Is it normal ?
>
>    I have a PentiumII 300MHz and when I make the Allegro library, it
>confirms that my assembler supports MMX instructions ! I have enabled
>the Pentium optimisations by setting PGCC to 1 in the makefile. Is there
>anything else to do ?
>


When i enable MMX, some polygon functions are A BIT faster.
(on Pentium 200 Mhz)