view include/SDL_config_minimal.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 d951a5afaf07
children 491e43f427ee 0906692aa6a4 a1b03ba2fcd0
line wrap: on
line source

/*
    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
*/

#ifndef _SDL_config_minimal_h
#define _SDL_config_minimal_h

#include "SDL_platform.h"

/* This is the minimal configuration that can be used to build SDL */

#include <stdarg.h>

typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed short int16_t;
typedef unsigned short uint16_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;
typedef unsigned int size_t;
typedef unsigned long uintptr_t;

/* Enable the dummy audio driver (src/audio/dummy/\*.c) */
#define SDL_AUDIO_DRIVER_DUMMY	1

/* Enable the stub cdrom driver (src/cdrom/dummy/\*.c) */
#define SDL_CDROM_DISABLED	1

/* Enable the stub joystick driver (src/joystick/dummy/\*.c) */
#define SDL_JOYSTICK_DISABLED	1

/* Enable the stub shared object loader (src/loadso/dummy/\*.c) */
#define SDL_LOADSO_DISABLED	1

/* Enable the stub thread support (src/thread/generic/\*.c) */
#define SDL_THREADS_DISABLED	1

/* Enable the stub timer support (src/timer/dummy/\*.c) */
#define SDL_TIMERS_DISABLED	1

/* Enable the dummy video driver (src/video/dummy/\*.c) */
#define SDL_VIDEO_DRIVER_DUMMY	1

#endif /* _SDL_config_minimal_h */