Mercurial > sdl-ios-xcode
view src/audio/mint/SDL_mintaudio_gsxb.h @ 3899:081aecdb0911 SDL-1.2
From: Gabriel Gambetta
To: SDL Mailing List <sdl@libsdl.org>
Date: Fri, 17 Nov 2006 00:39:29 -0200
Subject: [SDL] Alpha blending bug - fixed?
It turns out mm5 never got the correct value. This failed :
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (sf->Ashift) );
mm5 got 0xFF000018 instead of 0x00000018. However I did this :
Uint32 ashift = sf->Ashift;
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (ashift) );
and everything worked fine.
The only thing I could find out was that ashift is 32-bit aligned but
sf->Ashift isn't:
printf("ashift %8X [%d]\n", &ashift, (int)(&ashift) % 4);
printf("sf->Ashift %8X [%d]\n", &sf->Ashift, (int)(&sf->Ashift) % 4);
ashift at BFF0E0C4 [0]
sf->Ashift at 08AFB9CD [1]
Could this be the problem? If it is, the fix is extremely trivial.
Should I submit a patch?
--Gabriel
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Tue, 21 Nov 2006 23:17:00 +0000 |
parents | d910939febfa |
children | 782fd950bd46 a1b03ba2fcd0 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" /* * GSXB audio definitions * * Patrice Mandin */ #ifndef _SDL_mintaudio_gsxb_h #define _SDL_mintaudio_gsxb_h #include <mint/falcon.h> /* for trap_14_xxx macros */ /* GSXB Cookie */ #define C_GSXB 0x47535842L /* Bit 5 in cookie _SND */ #define SND_GSXB (1<<5) /* NSoundcmd modes */ #define SETRATE 7 /* Set sample rate */ #define SET8BITFORMAT 8 /* 8 bits format */ #define SET16BITFORMAT 9 /* 16 bits format */ #define SET24BITFORMAT 10 /* 24 bits format */ #define SET32BITFORMAT 11 /* 32 bits format */ #define LTATTEN_MASTER 12 /* Attenuation */ #define RTATTEN_MASTER 13 #define LTATTEN_MICIN 14 #define RTATTEN_MICIN 15 #define LTATTEN_FMGEN 16 #define RTATTEN_FMGEN 17 #define LTATTEN_LINEIN 18 #define RTATTEN_LINEIN 19 #define LTATTEN_CDIN 20 #define RTATTEN_CDIN 21 #define LTATTEN_VIDIN 22 #define RTATTEN_VIDIN 23 #define LTATTEN_AUXIN 24 #define RTATTEN_AUXIN 25 /* Setmode modes */ #define MONO16 3 #define STEREO24 4 #define STEREO32 5 #define MONO24 6 #define MONO32 7 /* Sndstatus modes */ #define SND_QUERYFORMATS 2 #define SND_QUERYMIXERS 3 #define SND_QUERYSOURCES 4 #define SND_QUERYDUPLEX 5 #define SND_QUERY8BIT 8 #define SND_QUERY16BIT 9 #define SND_QUERY24BIT 10 #define SND_QUERY32BIT 11 #define SND_FORMAT8 (1<<0) #define SND_FORMAT16 (1<<1) #define SND_FORMAT24 (1<<2) #define SND_FORMAT32 (1<<3) #define SND_FORMATSIGNED (1<<0) #define SND_FORMATUNSIGNED (1<<1) #define SND_FORMATBIGENDIAN (1<<2) #define SND_FORMATLITTLEENDIAN (1<<3) /* Devconnect prescalers */ #define CLK_44K 1 #define CLK_22K 3 #define CLK_11K 7 /* Extra xbios functions */ #define NSoundcmd(mode,data,data2) \ (long)trap_14_wwl((short)130,(short)(mode),(short)(data),(long)(data2)) #define NSetinterrupt(src_inter,cause,inth_addr) \ (long)trap_14_wwwl((short)135,(short)(src_inter),(short)(cause), \ (long)(inth_addr)) #endif /* _SDL_mintaudio_gsxb_h */