Mercurial > sdl-ios-xcode
comparison src/audio/SDL_mixer_MMX.c @ 1147:b580f7201543
From: "Alex Volkov" <avcp-sdlmail@usa.net>
To: "'A list for developers using the SDL library. \(includesSDL-announce\)'" <sdl@libsdl.org>
Date: Mon, 19 Sep 2005 18:59:43 -0400
Subject: [SDL] [patch] Volume multiplier bug in
The volume multiplier in SDL_MixAudio_MMX_S8() is formed from the wrong
register.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 27 Sep 2005 12:14:17 +0000 |
| parents | e3b3130f3af8 |
| children | d910939febfa |
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| 1146:ab0154afe938 | 1147:b580f7201543 |
|---|---|
| 119 { | 119 { |
| 120 __asm__ __volatile__ ( | 120 __asm__ __volatile__ ( |
| 121 | 121 |
| 122 " movl %3,%%eax\n" // eax = volume | 122 " movl %3,%%eax\n" // eax = volume |
| 123 | 123 |
| 124 " movd %%edx,%%mm0\n" | 124 " movd %%eax,%%mm0\n" |
| 125 " movq %%mm0,%%mm1\n" | 125 " movq %%mm0,%%mm1\n" |
| 126 " psllq $16,%%mm0\n" | 126 " psllq $16,%%mm0\n" |
| 127 " por %%mm1,%%mm0\n" | 127 " por %%mm1,%%mm0\n" |
| 128 " psllq $16,%%mm0\n" | 128 " psllq $16,%%mm0\n" |
| 129 " por %%mm1,%%mm0\n" | 129 " por %%mm1,%%mm0\n" |