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Fixed bug #89 Date: Sun, 23 Oct 2005 16:39:03 +0200 From: "A. Schmid" <sahib@phreaker.net> Subject: [SDL] no software surfaces with svgalib driver? Hi, I noticed that the SDL (1.2.9) svgalib driver only makes use of linear addressable (framebuffer) video modes. On older systems (like one of mine), linear addressable modes are often not available. Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is unusable, since VESA only supports framebuffering for VBE 2.0 and later. The changes necessary to add support for software surfaces seem to be relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see attached patch). The code worked fine for me, but it is no more than a proof of concept and should be reviewed (probably has a memory leak when switching modes). It also uses the vgagl library (included in the svgalib package) and needs to be linked against it. -Alex
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 12:05:16 +0000
parents 30f189cdd82b
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifndef _SDL_config_h
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24 #define _SDL_config_h
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25
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26 #include "SDL_platform.h"
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28 /* Add any platform that doesn't build using the configure system */
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29 #if defined(__AMIGA__)
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30 #include "SDL_config_amiga.h"
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31 #elif defined(__DREAMCAST__)
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32 #include "SDL_config_dreamcast.h"
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33 #elif defined(__MACOS__)
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34 #include "SDL_config_macos.h"
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35 #elif defined(__MACOSX__)
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36 #include "SDL_config_macosx.h"
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37 #elif defined(__WIN32__)
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38 #include "SDL_config_win32.h"
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39 #elif defined(__OS2__)
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40 #include "SDL_config_os2.h"
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41 #else
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42 /* This is the minimal configuration that can be used to build SDL */
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44 #include <stdarg.h>
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45
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46 typedef signed char int8_t;
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47 typedef unsigned char uint8_t;
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48 typedef signed short int16_t;
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49 typedef unsigned short uint16_t;
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50 typedef signed int int32_t;
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51 typedef unsigned int uint32_t;
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52 typedef unsigned int size_t;
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53 typedef unsigned long uintptr_t;
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54
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55 /* Enable the dummy audio driver (src/audio/dummy/\*.c) */
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56 #define SDL_AUDIO_DRIVER_DUMMY 1
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57
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58 /* Enable the stub cdrom driver (src/cdrom/dummy/\*.c) */
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59 #define SDL_CDROM_DISABLED 1
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60
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61 /* Enable the stub joystick driver (src/joystick/dummy/\*.c) */
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62 #define SDL_JOYSTICK_DISABLED 1
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63
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64 /* Enable the stub shared object loader (src/loadso/dummy/\*.c) */
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65 #define SDL_LOADSO_DISABLED 1
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66
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67 /* Enable the stub thread support (src/thread/generic/\*.c) */
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68 #define SDL_THREADS_DISABLED 1
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69
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70 /* Enable the stub timer support (src/timer/dummy/\*.c) */
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71 #define SDL_TIMERS_DISABLED 1
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72
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73 /* Enable the dummy video driver (src/video/dummy/\*.c) */
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74 #define SDL_VIDEO_DRIVER_DUMMY 1
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75
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76 #endif /* platform config */
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78 #endif /* _SDL_config_h */