Date: Wed, 17 Aug 2005 11:23:40 -0400
From: Matt L <prometheus.uw@gmail.com>
To: "Ryan C. Gordon" <icculus@clutteredmind.org>
Subject: SDL Patch
Hio,
I saw your last call on the mailing list. Here's a patch which I
submitted about two weeks ago which hasn't made it in.
In the current sdl.m4, there's a bug where if your configure.ac, you
have AC_LANG(C++) specified, it won't properly compile and link the SDL
test program when you run the configure script. This is because only the
default CFLAGS is overriden in sdl.m4, and in the patch below, I've
fixed it so it overrides CXXFLAGS as well, allowing it to work with g++.
1 ==============================================================================
2 Using the Simple DirectMedia Layer on Atari
3 ==============================================================================
6 If you want to build SDL from sources to create SDL programs on Atari:
9 If you want to create SDL programs on Atari using SDL binary build,
10 download it from my web site (URL at end of this file).
12 If you want to configure a program using SDL on Atari,
16 ==============================================================================
17 I. Building the Simple DirectMedia Layer libraries:
18 (This step isn't necessary if you have the SDL binary distribution)
20 Do the classic configure, with --disable-shared --enable-static and:
22 Tos version (should run everywhere):
24 Tos does not support threads.
26 MiNT version (maybe Magic, only for multitasking OS):
27 --disable-pthreads --enable-pth
28 Mint and Magic may supports threads, so audio can be used with current
29 devices, like Sun audio, or disk-writing support. Like Tos, interrupt
30 audio without threads is more suited for Atari machines.
32 Then you can make ; make install it.
34 ==============================================================================
35 II. Building the Simple DirectMedia Layer test programs:
37 Do the classic configure, then make.
41 ==============================================================================
44 If you have a project you'd like me to know about, or want to ask questions,
45 go ahead and join the SDL developer's mailing list by sending e-mail to:
47 sdl-request@libsdl.org
49 and put "subscribe" into the subject of the message. Or alternatively you
50 can use the web interface:
52 http://www.libsdl.org/mailman/listinfo/sdl
54 ==============================================================================
55 IV. What is supported:
57 Keyboard (GEMDOS, BIOS, GEM, Ikbd)
58 Mouse (XBIOS, GEM, Ikbd)
59 Video (XBIOS (Fullscreen), GEM (Windowed and Fullscreen))
60 Timer (VBL vector, GNU pth library)
61 Joysticks and joypads (Ikbd, Hardware)
62 Audio (Hardware, XBIOS, GSXB, MCSN, STFA, /dev/audio if threads enabled)
63 Threads (Multitasking OS only via GNU pth library)
64 Shared object loader (using LDG library from http://ldg.atari.org/)
66 OpenGL (using Mesa offscreen rendering driver)
68 - Dependent driver combinations:
69 Video Kbd Mouse Timer Joysticks
70 xbios ikbd ikbd vbl(2) ikbd
71 xbios gemdos xbios vbl(2) xbios
72 xbios bios xbios vbl(2) xbios
73 gem gem gem(1) vbl(2) xbios
76 dma8 All Uses MFP Timer A interrupt
77 xbios TOS Uses MFP Timer A interrupt
78 xbios MiNT Uses MiNT thread
80 stfa All Uses MFP interrupt
81 mcsn TOS Uses MFP Timer A interrupt
82 mcsn MiNT Uses MiNT thread
84 gsxb All Uses GSXB callback
86 Joypad driver always uses hardware access.
87 OpenGL driver always uses OSMesa.
89 (1) GEM does not report relative mouse motion, so xbios mouse driver is used
90 to report this type event.
92 (2) If you build SDL with threads using the GNU pth library, timers are
93 supported via the pth library.
95 ==============================================================================
96 V. Environment variables:
99 Set to 'xbios' to force xbios video driver
100 Set to 'gem' to force gem video driver
103 Set to filename to load as OpenGL library, if you use SDL_GL_LoadLibrary()
106 Set to 'mint_gsxb' to force Atari GSXB audio driver
107 Set to 'mint_mcsn' to force Atari MCSN audio driver
108 Set to 'mint_stfa' to force Atari STFA audio driver
109 Set to 'mint_xbios' to force Atari Xbios audio driver
110 Set to 'mint_dma8' to force Atari 8 bits DMA audio driver
111 Set to 'audio' to force Sun /dev/audio audio driver
112 Set to 'disk' to force disk-writing audio driver
114 SDL_ATARI_EVENTSDRIVER
115 Set to 'ikbd' to force IKBD 6301 keyboard driver
116 Set to 'gemdos' to force gemdos keyboard driver
117 Set to 'bios' to force bios keyboard driver
120 Use any of these strings in the environment variable to enable or
123 'ikbd-joy1-[on|off]' for IKBD joystick on port 1 (hardware access)
124 'xbios-joy1-[on|off]' for IKBD joystick on port 1 (xbios access)
125 'porta-pad-[on|off]' for joypad on port A
126 'porta-joy0-[on|off]' for joystick 0 on port A
127 'porta-joy1-[on|off]' for joystick 1 on port A
128 'porta-lp-[on|off]' for lightpen on port A
129 'porta-anpad-[on|off]' for analog paddle on port A
130 'portb-pad-[on|off]' for joypad on port B
131 'portb-joy0-[on|off]' for joystick 0 on port B
132 'portb-joy1-[on|off]' for joystick 1 on port B
133 'portb-anpad-[on|off]' for analog paddle on port B
135 Default configuration is:
136 'ikbd-joy1-on' (if IKBD events driver enabled)
137 'xbios-joy1-on' (if gemdos/bios/gem events driver enabled)
138 'porta-pad-on portb-pad-on' (if available on the machine)
140 port[a|b]-[pad|joy?|lp|anpad]-* strings are mutually exclusives.
141 On such a port, you can only use a joypad OR 1 or 2 joysticks OR
142 a lightpen OR an analog paddle. You must disable joypad before
143 setting another controller.
145 The second joystick port on IKBD is used by the mouse, so not usable.
146 Another problem with the IKBD: mouse buttons and joystick fire buttons
147 are wired together at the hardware level, it means:
149 mouse left button = joystick fire 0 = joystick fire 1
150 mouse right button = joystick fire 1 = joystick fire 0
152 Descriptions of joysticks/joypads:
153 - Joypads: 1 hat, 17 buttons (Atari Jaguar console-like).
154 - Joysticks: 1 hat, 1 button.
155 - Lightpen, analog paddles: 2 axis, 2 buttons. The 2 buttons are those
156 affected to 1 button joysticks on the same port.
158 ==============================================================================
159 VI. More informations about drivers:
162 The default is to use the Mesa offscreen driver (osmesa.ldg). If you want
163 to use an older OpenGL implementation, like mesa_gl.ldg or tiny_gl.ldg,
164 your program must use SDL_GL_LoadLibrary() to do so, and retrieve the
165 needed function pointers with SDL_LoadFunction(). In all cases, the OpenGL
166 context is taken care of by SDL itself, you just have to use gl* functions.
168 However, there is one OpenGL call that has a different prototype in the old
169 implementations: glOrtho(). In the old implementations, it has 6 float as
170 parameters, in the standard one, it has 6 double parameters. If you want
171 to compile testdyngl, or any other SDL program that loads its OpenGL
172 library, you must change the glOrtho() prototype used in this program. In
173 osmesa.ldg, you can retrieve a glOrtho() with double parameters, by
174 searching for the function "glOrtho6d".
177 Video chip is detected using the _VDO cookie.
178 Screen enhancers are not supported, but could be if you know how to
181 ST, STE, Mega ST, Mega STE:
182 320x200x4 bits, shades of grey, available only for the purpose
185 320x480x8 and 320x240x8 (software double-lined mode).
187 All modes supported by the current monitor (RVB or VGA).
188 BlowUp and Centscreen extended modes, ScreenBlaster 3 current mode.
189 Clones and any machine with monochrome monitor:
193 Automatically used if xbios not available.
196 Only the current resolution, if 8 bits or higher depth.
198 IKBD keyboard, mouse and joystick driver:
199 Available if _MCH cookie is ST, Mega ST, STE, Mega STE, TT or Falcon.
201 Hades has an IKBD, but xbios is not available for video, so IKBD
204 Gemdos and bios keyboard driver:
205 Available on all machines.
207 Mouse and joystick xbios driver:
208 Available on all machines (I think).
211 Available if _MCH cookie is STE or Falcon.
214 Available with multitasking OS.
217 Available on all machines (I think).
220 Cookies _SND, MCSN, STFA and GSXB used to detect supported audio
224 8 bits DMA (hardware access)
225 STFA, MCSN or GSXB driver if installed
227 8 bits DMA (hardware access)
229 STFA, MCSN or GSXB driver if installed
231 STFA, MCSN or GSXB driver if installed
234 http://removers.free.fr/softs/stfa.html
236 http://assemsoft.atari.org/gsxb/
238 http://jf.omnis.ch/software/tos/
239 MagicSound driver (MCSN,GSXB compatible):
240 http://perso.wanadoo.fr/didierm/
241 X-Sound driver (GSXB compatible):
242 http://www.uni-ulm.de/~s_thuth/atari/xsound_e.html
245 Patrice Mandin <pmandin@caramail.com>
246 http://membres.lycos.fr/pmandin/