Mercurial > sdl-ios-xcode
view CREDITS @ 689:5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
From: Stephane Marchesin
Subject: Re: [SDL] [patch] MMX alpha blit patches with MMX detection
I think everything is correct now. I've done as much testing as I could,
but some real-world testing wouldn't hurt, I think.
The patch is here : http://icps.u-strasbg.fr/~marchesin/sdl_mmxblit.patch
If you do byte-by-byte comparison of the output between C and MMX
functions, you'll notice that the results for 555 and 565 RGB alpha
blits aren't exactly the same. This is because MMX functions for 555 and
565 RGB have an higher accuracy. If you want the exact same behaviour
that's possible by masking the three lower alpha bits in the MMX
functions. Just ask !
I removed one MMX function because after I fixed it to match its C
equivalent, it revealed to be slower than the C version on a PIII
(although a bit faster on an Athlon XP).
I've also added MMX and PIII replacements for SDL_memcpy. Those provide
some speed up in testvidinfo -benchmark (at least for me, under linux &
X11).
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 22 Aug 2003 05:51:19 +0000 |
parents | 877b992f2d0c |
children | b10aeac509ea |
line wrap: on
line source
Simple DirectMedia Layer CREDITS Thanks to everyone who made this possible, including: * Cliff Matthews, for giving me a reason to start this project. :) -- Executor rocks! *grin* * Scott Call, for making a home for SDL on the 'Net... Thanks! :) * The Linux Fund, C Magazine, and Gareth Noyce for financial contributions * Gaëtan de Menten for writing the PHP and SQL behind the SDL website * Martin Donlon for his work on the SDL Documentation Project * Ryan Gordon for helping everybody out and keeping the dream alive. :) * Mattias Engdegård, for help with the Solaris port and lots of other help * Max Watson, Matt Slot, and Kyle for help with the MacOS Classic port * Stan Shebs, for the initial MacOS X port * Max Horn and Darrell Walisser for unflagging work on the MacOS X port * Patrick Trainor, Jim Boucher, and Mike Gorchak for the QNX Neutrino port * Carsten Griwodz for the AIX port * Gabriele Greco, for the Amiga port * Patrice Mandin, for the Atari port * Hannu Viitala for the EPOC port * Peter Valchev for nagging me about the OpenBSD port until I got it right. :) * Kent B Mein, for a place to do the IRIX port * Ash, for a place to do the OSF/1 Alpha port * David Sowsy, for help with the BeOS port * Eugenia Loli, for endless work on porting SDL games to BeOS * Jon Taylor for the GGI front-end * Paulus Esterhazy, for the Visual C++ testing and libraries * Brenda Tantzen, for Metrowerks CodeWarrior on MacOS * Chris Nentwich, for the Hermes assembly blitters * Michael Vance and Jim Kutter for the X11 OpenGL support * Stephane Peter, for the AAlib front-end and multi-threaded timer idea. * Jon Atkins for great SDL_net and SDL_mixer documentation * Peter Wiklund, for the 1998 winning SDL logo, and Arto Hamara, Steven Wong, and Kent Mein for other logo entries. * Everybody at Loki Software, Inc. for their great contributions! And a big hand to everyone else who gave me appreciation, advice, and suggestions, especially the good folks on the SDL mailing list. THANKS! :) -- Sam Lantinga <slouken@libsdl.org>