Mercurial > sdl-ios-xcode
view src/audio/SDL_mixer_MMX_VC.h @ 787:07760c8854d1
Date: Sat, 24 Jan 2004 14:49:58 +0100
From: Stephane Marchesin
Subject: Re: [SDL] 3DNow! detection on a P4 system
Well... I found another bug : 3dnow was detected on P2/P3 cpus. So I
took one more look at the code and found a mistake in
CPU_getCPUIDFeaturesExt :
The condition for having extended cpuinfo is that when we query extended
cpuinfo we get a result >= 0x80000001. So we must exit if eax < 0x80000001.
The attached patch does that.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 24 Jan 2004 15:55:00 +0000 |
| parents | 72ef7ce609ef |
| children | 450721ad5436 |
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#if defined(USE_ASM_MIXER_VC) // headers for MMX assembler version of SDL_MixAudio // Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr) // Converted to Intel ASM notation by Cth // This code is licensed under the LGPL (see COPYING for details) // // Assumes buffer size in bytes is a multiple of 16 // Assumes SDL_MIX_MAXVOLUME = 128 void SDL_MixAudio_MMX_S16_VC(char* ,char* ,unsigned int ,int ); void SDL_MixAudio_MMX_S8_VC(char* ,char* ,unsigned int ,int ); #endif