Mercurial > sdl-ios-xcode
annotate README.OS2 @ 3969:e6112676c9a0 SDL-1.2
Removed some more EPOC stuff I missed.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Fri, 15 Jun 2007 15:52:04 +0000 |
| parents | d5d3a6fe05a1 |
| children | c121d94672cb |
| rev | line source |
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| 1190 | 1 |
| 2 =========== | |
| 3 SDL on OS/2 | |
| 4 =========== | |
| 5 | |
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6 Last updated on May. 17, 2006. |
| 1190 | 7 |
| 8 | |
| 9 1. How to compile? | |
| 10 ------------------ | |
| 11 | |
| 12 To compile this, you'll need the followings installed: | |
| 13 - The OS/2 Developer's Toolkit | |
| 14 - The OpenWatcom compiler | |
| 15 (http://www.openwatcom.org) | |
| 16 | |
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17 First of all, you have to unzip the Watcom-OS2.zip file. This will result in a |
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18 file called "makefile" and a file called "setvars.cmd" in this folder (and some |
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19 more files...). |
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20 |
| 1190 | 21 Please edit the second, fourth and fifth lines of setvars.cmd file |
| 22 to set the folders where the toolkit, the OW compiler and the FSLib are. | |
| 23 You won't need NASM yet (The Netwide Assembler), you can leave that line. | |
| 24 Run setvars.cmd, and you should get a shell in which you can | |
| 25 compile SDL. | |
| 26 | |
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27 Check the "makefile" file. There is a line in there which determines if the |
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28 resulting SDL.DLL will be a 'debug' or a 'release' build. The 'debug' version |
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29 is full of printf()'s, so if something goes wrong, its output can help a lot |
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30 for debugging. |
| 1190 | 31 |
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32 Then run "wmake". |
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33 This should create the SDL12.DLL and the corresponding SDL12.LIB file here. |
| 1190 | 34 |
| 35 To test applications, it's a good idea to use the 'debug' build of SDL, and | |
| 36 redirect the standard output and standard error output to files, to see what | |
| 37 happens internally in SDL. | |
| 38 (like: testsprite >stdout.txt 2>stderr.txt) | |
| 39 | |
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40 To rebuild SDL, use the following commands in this folder: |
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41 wmake clean |
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42 wmake |
| 1190 | 43 |
| 44 | |
| 45 | |
| 46 2. How to compile the testapps? | |
| 47 ------------------------------- | |
| 48 | |
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49 Once you have SDL12.DLL compiled, navigate into the 'test' folder, copy in |
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50 there the newly built SDL12.DLL, and copy in there FSLib.DLL. |
| 1190 | 51 |
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52 Then run "wmake" in there to compile some of the testapps. |
| 1190 | 53 |
| 54 | |
| 55 | |
| 56 3. What is missing? | |
| 57 ------------------- | |
| 58 | |
| 59 The following things are missing from this SDL implementation: | |
| 60 - MMX, SSE and 3DNOW! optimized video blitters? | |
| 61 - HW Video surfaces | |
| 62 - OpenGL support | |
| 63 | |
| 64 | |
| 65 | |
| 66 4. Special Keys / Full-Screen support | |
| 67 ------------------------------------- | |
| 68 | |
| 69 There are two special hot-keys implemented: | |
| 70 - Alt+Home switches between fullscreen and windowed mode | |
| 71 - Alt+End simulates closing the window (can be used as a Panic key) | |
| 72 Only the LEFT Alt key will work. | |
| 73 | |
| 74 | |
| 75 | |
| 76 5. Joysticks on SDL/2 | |
| 77 --------------------- | |
| 78 | |
| 79 The Joystick detection only works for standard joysticks (2 buttons, 2 axes | |
| 80 and the like). Therefore, if you use a non-standard joystick, you should | |
| 81 specify its features in the SDL_OS2_JOYSTICK environment variable in a batch | |
| 82 file or CONFIG.SYS, so SDL applications can provide full capability to your | |
| 83 device. The syntax is: | |
| 84 | |
| 85 SET SDL_OS2_JOYSTICK=[JOYSTICK_NAME] [AXES] [BUTTONS] [HATS] [BALLS] | |
| 86 | |
| 87 So, it you have a Gravis GamePad with 4 axes, 2 buttons, 2 hats and 0 balls, | |
| 88 the line should be: | |
| 89 | |
| 90 SET SDL_OS2_JOYSTICK=Gravis_GamePad 4 2 2 0 | |
| 91 | |
| 92 If you want to add spaces in your joystick name, just surround it with | |
| 93 quotes or double-quotes: | |
| 94 | |
| 95 SET SDL_OS2_JOYSTICK='Gravis GamePad' 4 2 2 0 | |
| 96 | |
| 97 or | |
| 98 | |
| 99 SET SDL_OS2_JOYSTICK="Gravis GamePad" 4 2 2 0 | |
| 100 | |
| 101 Notive However that Balls and Hats are not supported under OS/2, and the | |
| 102 value will be ignored... but it is wise to define these correctly because | |
| 103 in the future those can be supported. | |
| 104 Also the number of buttons is limited to 2 when using two joysticks, | |
| 105 4 when using one joystick with 4 axes, 6 when using a joystick with 3 axes | |
| 106 and 8 when using a joystick with 2 axes. Notice however these are limitations | |
| 107 of the Joystick Port hardware, not OS/2. | |
| 108 | |
| 109 | |
| 110 | |
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111 6. Proportional windows |
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112 ----------------------- |
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113 |
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114 For some SDL applications it can be handy to have proportional windows, so |
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115 the windows will keep their aspect ratio when resized. |
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116 This can be achieved in two ways: |
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117 |
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118 - Before starting the given SDL application, set the |
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119 SDL_USE_PROPORTIONAL_WINDOW environment variable to something, e.g.: |
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120 |
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121 SET SDL_USE_PROPORTIONAL_WINDOW=1 |
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122 dosbox.exe |
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123 |
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124 - If you have a HOME environment variable set, then SDL will look for a file |
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125 in there called ".sdl.proportionals". If that file contains the name of the |
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126 currently running SDL executable, then that process will have proportional |
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127 windows automatically. |
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128 |
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129 Please note that this file is created automatically with default values |
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130 at the first run. |
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131 |
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132 |
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133 |
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134 7. Audio in SDL applications |
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135 ---------------------------- |
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136 |
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137 Audio effects are one of the most important features in games. Creating audio |
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138 effects in sync with the game and without hickups and pauses in the audio are |
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139 very important things. |
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140 |
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141 However there are multithreaded SDL applications that have tight loops as their |
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142 main logic loop. This kills performance in OS/2, and takes too much CPU from |
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143 other threads in the same process, for example from the thread to create the |
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144 sound effects. |
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145 |
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146 For this reason, the OS/2 port of SDL can be instructed to run the audio thread |
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147 in high priority, which makes sure that there will be enough time for the |
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148 processing of the audio data. |
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149 |
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150 At default, SDL/2 runs the audio thread at ForegroundServer+0 priority. Well |
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151 written and well behaving SDL applications should work well in this mode. |
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152 For other applications, you can tell SDL/2 to run the audio thread at |
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153 TimeCritical priority by setting an env.variable before starting the SDL app: |
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154 |
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155 SET SDL_USE_TIMECRITICAL_AUDIO=1 |
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156 |
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157 Please note that this is a bit risky, because if the SDL application runs a |
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158 tight infinite loop in this thread, this will make the whole system |
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159 unresponsive, so use it with care, and only for applications that need it! |
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160 |
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161 |
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162 |
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163 8. Next steps... |
| 1190 | 164 ---------------- |
| 165 | |
| 166 Things to do: | |
| 167 - Implement missing stuffs (look for 'TODO' string in source code!) | |
| 168 - Finish video driver (the 'wincommon' can be a good example for missing | |
| 169 things like application icon and so on...) | |
| 170 - Enable MMX/SSE/SSE2 acceleration functions | |
| 171 - Rewrite CDROM support using DOS Ioctl for better support. | |
| 172 | |
| 173 | |
| 174 | |
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175 9. Contacts |
| 1190 | 176 ----------- |
| 177 | |
| 178 You can contact the developers for bugs: | |
| 179 | |
| 180 Area Developer email | |
| 181 General (Audio/Video/System) Doodle doodle@scenergy.dfmk.hu | |
| 182 CDROM and Joystick Caetano daniel@caetano.eng.br | |
| 183 | |
| 184 Notice however that SDL/2 is 'in development' stage so ... if you want to help, | |
| 185 please, be our guest and contact us! | |
| 186 | |
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187 |
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188 |
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189 10. Changelog of the OS/2 port |
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190 ------------------------------ |
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191 |
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192 Version 1.2.10 - 2006-05-17 - Doodle |
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193 - Small modifications for v1.2.10 release |
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194 - Changed DLL name to include version info (currently SDL12.dll) |
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195 |
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196 Version 1.2 - 2006-05-01 - Doodle |
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197 - Modified makefile system to have only one makefile |
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198 - Included FSLib headers, DLL and LIB file |
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199 |
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200 Version 1.2 - 2006-02-26 - Doodle |
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201 - Updated the official SDL version with the OS/2 specific changes. |
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202 - Added support for real unicode keycode conversion. |
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203 |
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204 Version 1.2.7 - 2006-01-20 - Doodle |
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205 - Added support for selectively using timecritical priority for |
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206 audio threads by SDL_USE_TIMECRITICAL_AUDIO environment variable. |
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207 (e.g.: |
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208 SET SDL_USE_TIMECRITICAL_AUDIO=1 |
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209 dosbox.exe |
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210 ) |
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211 |
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212 Version 1.2.7 - 2005-12-22 - Doodle |
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213 - Added support for proportional SDL windows. |
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214 There are two ways to have proportional (aspect-keeping) windows for |
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215 a given SDL application: Either set the SDL_USE_PROPORTIONAL_WINDOW |
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216 environment variable to something before starting the application |
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217 (e.g.: |
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218 SET SDL_USE_PROPORTIONAL_WINDOW=1 |
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219 dosbox.exe |
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220 ) |
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221 or, if you have the HOME environment variable set, then SDL12.DLL will |
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222 create a file in that directory called .sdl.proportionals, and you can |
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223 put there the name of executable files that will be automatically made |
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224 proportional. |
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225 |
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226 Version 1.2.7 - 2005-10-14 - Doodle |
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227 - Enabled Exception handler code in FSLib to be able to restore original |
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228 desktop video mode in case the application crashes. |
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229 - Added the missing FSLib_Uninitialize() call into SDL. |
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230 (The lack of it did not cause problems, but it's cleaner this way.) |
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231 - Fixed a mouse problem in Fullscreen mode where any mouse click |
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232 re-centered the mouse. |
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233 |
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234 Version 1.2.7 - 2005-10-09 - Doodle |
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235 - Implemented window icon support |
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236 |
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237 Version 1.2.7 - 2005-10-03 - Doodle |
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238 - Reworked semaphore support again |
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239 - Tuned thread priorities |
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240 |
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241 Version 1.2.7 - 2005-10-02 - Doodle |
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242 - Added support for custom mouse pointers |
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243 - Fixed WM_CLOSE processing: give a chance to SDL app to ask user... |
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244 - Added support for MMX-accelerated audio mixers |
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245 - Other small fixes |
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246 |
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247 Version 1.2.7 - 2005-09-12 - Doodle |
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248 - Small fixes for DosBox incorporated into public release |
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249 - Fixed semaphore support (SDL_syssem.c) |
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250 - Fixed FSLib to have good clipping in scaled window mode, |
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251 and to prevent occasional desktop freezes. |
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252 |
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253 Version 1.2.7 - 2004-09-08a - Caetano |
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254 - Improved joystick support (general verifications about hardware). |
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255 - Added support up to 8 buttons in 2 axes joysticks and 6 buttons in 3 axes joysticks. |
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256 - Added support to environment variable SDL_OS2_JOYSTICK to specify a joystick. |
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257 - Improved Joystick test to handle every type of joystick and display only relevant information. |
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258 - Merged with Doodle 2004-09-08 |
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259 - Little tid up in README.OS2 |
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260 - Added explanation about SDL_OS2_JOYSTICK environment variable on README.OS2 |
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261 |
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262 Version 1.2.7 - 2004-09-07 - Caetano |
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263 - Merged with changes in headers for GCC compiling. |
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264 - Added Joystick support using basic IBM GAME$ support, allowing it to work with all joystick drivers since OS/2 2.1. |
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265 - Improved joystick detection (hacked!). OS/2 do not allow real joystick detection, so... |
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266 - Modified makefile in test to compile "testjoystick". Anyway, it's useless, since it seems to cause a lot of trouble in OS/2 (because os video routines, not Joystick support). |
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267 - Created separated Joystick test program to test only joystick functions. |
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268 - Improved joystick auto-centering. |
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269 - Improved the coordinate correction routine to use two scale factors for each axis. |
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270 |
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271 Version 1.2.7 - 2004-07-05 - Caetano |
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272 - Corrected the time returned by status in CDROM support (it was incorrect) |
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273 - Added the testcdrom.c and corrected the linking directive (it was causing an error) |
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274 |
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275 Version 1.2.7 - 2004-07-02a - Caetano |
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276 - Corrected a little problem in a comment at SDL-1.2.7\test\torturethread.c, line 18 (missing */, nested comment) |
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277 - Added CDROM support to tree (SDL-1.2.7\src\cdrom\os2\SDL_syscdrom.c) |
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278 - Modified makefile (SDL-1.2.7\src\makefiles.wat and SDL-1.2.7\watcom.mif) to build with CDROM support |
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279 - Added the "extra" SDL_types.h forgotten in 2004-07-02 version. |
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280 |
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281 <End-Of-File> |