Mercurial > sdl-ios-xcode
annotate WhatsNew @ 4280:e1826b24ee8d SDL-1.2
Updated documentation with major changes for 1.2.14
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 07 Oct 2009 08:00:20 +0000 |
| parents | 82dab719502e |
| children | 0ca47eaff9c9 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 This is a list of API changes in SDL's version history. | |
| 3 | |
| 4 Version 1.0: | |
| 5 | |
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6 1.2.14: |
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7 Added cast macros for correct usage with C++: |
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8 SDL_reinterpret_cast(type, expression) |
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9 SDL_static_cast(type, expression) |
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10 |
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11 Added SDL_NO_LOCK_KEYS environment variable to enable normal |
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12 up/down events for Caps-Lock and Num-Lock keys. |
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13 |
| 4113 | 14 1.2.13: |
| 15 Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants. | |
| 16 | |
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17 1.2.12: |
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18 Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling |
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19 of the screensaver on Mac OS X and X11. |
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20 |
| 1507 | 21 1.2.10: |
| 1794 | 22 If SDL_OpenAudio() is passed zero for the desired format |
| 23 fields, the following environment variables will be used | |
| 24 to fill them in: | |
| 25 SDL_AUDIO_FREQUENCY | |
| 26 SDL_AUDIO_FORMAT | |
| 27 SDL_AUDIO_CHANNELS | |
| 28 SDL_AUDIO_SAMPLES | |
| 29 If an environment variable is not specified, it will be set | |
| 30 to a reasonable default value. | |
| 31 | |
| 1765 | 32 Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment |
| 33 variable, currently supported on X11 Xinerama configurations. | |
| 34 | |
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35 Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications. |
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36 |
| 1737 | 37 Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration. |
| 38 | |
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39 Added current_w and current_h to the SDL_VideoInfo structure, |
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40 which is set to the desktop resolution during video intialization, |
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41 and then set to the current resolution when a video mode is set. |
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42 |
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43 SDL_SetVideoMode() now accepts 0 for width or height and will use |
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Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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44 the current video mode (or the desktop mode if no mode has been set.) |
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Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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45 |
| 1507 | 46 Added SDL_GetKeyRepeat() |
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47 |
| 1507 | 48 Added SDL_config.h, with defaults for various build environments. |
| 49 | |
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50 1.2.7: |
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51 Added CPU feature detection functions to SDL_cpuinfo.h: |
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52 SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(), |
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53 SDL_HasAltiVec() |
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Added function to create RWops from const memory: SDL_RWFromConstMem()
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54 Added function to create RWops from const memory: SDL_RWFromConstMem() |
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55 |
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Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
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56 1.2.6: |
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57 Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() |
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58 |
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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59 Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA |
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60 |
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61 1.2.5: |
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62 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5) |
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63 |
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64 Added SDL_GL_STEREO for stereoscopic OpenGL contexts |
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65 |
| 0 | 66 1.2.0: |
| 67 Added SDL_VIDEOEXPOSE event to signal that the screen needs to | |
| 68 be redrawn. This is currently only delivered to OpenGL windows | |
| 69 on X11, though it may be delivered in the future when the video | |
| 70 memory is lost under DirectX. | |
| 71 | |
| 72 1.1.8: | |
| 73 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window | |
| 74 that has no title bar or frame decoration. Fullscreen video | |
| 75 modes automatically have this flag set. | |
| 76 | |
| 77 Added a function to query the clipping rectangle for a surface: | |
| 78 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect) | |
| 79 | |
| 80 Added a function to query the current event filter: | |
| 81 SDL_EventFilter SDL_GetEventFilter(void) | |
| 82 | |
| 83 If you pass -1 to SDL_ShowCursor(), it won't change the current | |
| 84 cursor visibility state, but will still return it. | |
| 85 | |
| 86 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning | |
| 87 you can nest them as deep as you want, as long as each lock call | |
| 88 has a matching unlock call. The surface remains locked until the | |
| 89 last matching unlock call. | |
| 90 | |
| 91 Note that you may not blit to or from a locked surface. | |
| 92 | |
| 93 1.1.7: | |
| 94 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take | |
| 95 arrays of Uint16 values instead of Uint8 values. For the most part, | |
| 96 you can just take your old values and shift them up 8 bits to get | |
| 97 new correct values for your gamma ramps. | |
| 98 | |
| 99 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface() | |
| 100 and SDL will try to RLE accelerate colorkey and alpha blits in the | |
| 101 resulting surface. | |
| 102 | |
| 103 1.1.6: | |
| 104 Added a function to return the thread ID of a specific thread: | |
| 105 Uint32 SDL_GetThreadID(SDL_Thread *thread) | |
| 106 If 'thread' is NULL, this function returns the id for this thread. | |
| 107 | |
| 108 1.1.5: | |
| 109 The YUV overlay structure has been changed to use an array of | |
| 110 pitches and pixels representing the planes of a YUV image, to | |
| 111 better enable hardware acceleration. The YV12 and IYUV formats | |
| 112 each have three planes, corresponding to the Y, U, and V portions | |
| 113 of the image, while packed pixel YUV formats just have one plane. | |
| 114 | |
| 115 For palettized mode (8bpp), the screen colormap is now split in | |
| 116 a physical and a logical palette. The physical palette determines | |
| 117 what colours the screen pixels will get when displayed, and the | |
| 118 logical palette controls the mapping from blits to/from the screen. | |
| 119 A new function, SDL_SetPalette() has been added to change | |
| 120 logical and physical palettes separately. SDL_SetColors() works | |
| 121 just as before, and is equivalent to calling SDL_SetPalette() with | |
| 122 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL). | |
| 123 | |
| 124 SDL_BlitSurface() no longer modifies the source rectangle, only the | |
| 125 destination rectangle. The width/height members of the destination | |
| 126 rectangle are ignored, only the position is used. | |
| 127 | |
| 128 The old source clipping function SDL_SetClipping() has been replaced | |
| 129 with a more useful function to set the destination clipping rectangle: | |
| 130 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect) | |
| 131 | |
| 132 Added a function to see what subsystems have been initialized: | |
| 133 Uint32 SDL_WasInit(Uint32 flags) | |
| 134 | |
| 135 The Big Alpha Flip: SDL now treats alpha as opacity like everybody | |
| 136 else, and not as transparency: | |
| 137 | |
| 138 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255 | |
| 139 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0 | |
| 140 Values between 0 and 255 vary from fully transparent to fully opaque. | |
| 141 | |
| 142 New functions: | |
| 143 SDL_DisplayFormatAlpha() | |
| 144 Returns a surface converted to a format with alpha-channel | |
| 145 that can be blit efficiently to the screen. (In other words, | |
| 146 like SDL_DisplayFormat() but the resulting surface has | |
| 147 an alpha channel.) This is useful for surfaces with alpha. | |
| 148 SDL_MapRGBA() | |
| 149 Works as SDL_MapRGB() but takes an additional alpha parameter. | |
| 150 SDL_GetRGBA() | |
| 151 Works as SDL_GetRGB() but also returns the alpha value | |
| 152 (SDL_ALPHA_OPAQUE for formats without an alpha channel) | |
| 153 | |
| 154 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in | |
| 155 the [0..255] interval. Previously, SDL_GetRGB() would return | |
| 156 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format. | |
| 157 (N.B.: This is broken for bit fields < 3 bits.) | |
| 158 | |
| 159 SDL_MapRGB() returns pixels in which the alpha channel is set opaque. | |
| 160 | |
| 161 SDL_SetAlpha() can now be used for both setting the per-surface | |
| 162 alpha, using the new way of thinking of alpha, and also to enable | |
| 163 and disable per-pixel alpha blending for surfaces with an alpha | |
| 164 channel: | |
| 165 To disable alpha blending: | |
| 166 SDL_SetAlpha(surface, 0, 0); | |
| 167 To re-enable alpha blending: | |
| 168 SDL_SetAlpha(surface, SDL_SRCALPHA, 0); | |
| 169 Surfaces with an alpha channel have blending enabled by default. | |
| 170 | |
| 171 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests | |
| 172 RLE acceleration of blits, just as like with SDL_SetColorKey(). | |
| 173 This flag can be set for both surfaces with an alpha channel | |
| 174 and surfaces with an alpha value set by SDL_SetAlpha(). | |
| 175 As always, RLE surfaces must be locked before pixel access is | |
| 176 allowed, and unlocked before any other SDL operations are done | |
| 177 on it. | |
| 178 | |
| 179 The blit semantics for surfaces with and without alpha and colorkey | |
| 180 have now been defined: | |
| 181 | |
| 182 RGBA->RGB: | |
| 183 SDL_SRCALPHA set: | |
| 184 alpha-blend (using alpha-channel). | |
| 185 SDL_SRCCOLORKEY ignored. | |
| 186 SDL_SRCALPHA not set: | |
| 187 copy RGB. | |
| 188 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 189 RGB values of the source colour key, ignoring alpha in the | |
| 190 comparison. | |
| 191 | |
| 192 RGB->RGBA: | |
| 193 SDL_SRCALPHA set: | |
| 194 alpha-blend (using the source per-surface alpha value); | |
| 195 set destination alpha to opaque. | |
| 196 SDL_SRCALPHA not set: | |
| 197 copy RGB, set destination alpha to opaque. | |
| 198 both: | |
| 199 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 200 source colour key. | |
| 201 | |
| 202 RGBA->RGBA: | |
| 203 SDL_SRCALPHA set: | |
| 204 alpha-blend (using the source alpha channel) the RGB values; | |
| 205 leave destination alpha untouched. [Note: is this correct?] | |
| 206 SDL_SRCCOLORKEY ignored. | |
| 207 SDL_SRCALPHA not set: | |
| 208 copy all of RGBA to the destination. | |
| 209 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 210 RGB values of the source colour key, ignoring alpha in the | |
| 211 comparison. | |
| 212 | |
| 213 RGB->RGB: | |
| 214 SDL_SRCALPHA set: | |
| 215 alpha-blend (using the source per-surface alpha value). | |
| 216 SDL_SRCALPHA not set: | |
| 217 copy RGB. | |
| 218 both: | |
| 219 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 220 source colour key. | |
| 221 | |
| 222 As a special case, blits from surfaces with per-surface alpha | |
| 223 value of 128 (50% transparency) are optimised and much faster | |
| 224 than other alpha values. This does not apply to surfaces with | |
| 225 alpha channels (per-pixel alpha). | |
| 226 | |
| 227 New functions for manipulating the gamma of the display have | |
| 228 been added: | |
| 229 int SDL_SetGamma(float red, float green, float blue); | |
| 230 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); | |
| 231 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); | |
| 232 Gamma ramps are tables with 256 entries which map the screen color | |
| 233 components into actually displayed colors. For an example of | |
| 234 implementing gamma correction and gamma fades, see test/testgamma.c | |
| 235 Gamma control is not supported on all hardware. | |
| 236 | |
| 237 1.1.4: | |
| 238 The size of the SDL_CDtrack structure changed from 8 to 12 bytes | |
| 239 as the size of the length member was extended to 32 bits. | |
| 240 | |
| 241 You can now use SDL for 2D blitting with a GL mode by passing the | |
| 242 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or | |
| 243 32 bpp, and the data in the framebuffer is put into the GL scene | |
| 244 when you call SDL_UpdateRects(), and the scene will be visible | |
| 245 when you call SDL_GL_SwapBuffers(). | |
| 246 | |
| 247 Run the "testgl" test program with the -logo command line option | |
| 248 to see an example of this blending of 2D and 3D in SDL. | |
| 249 | |
| 250 1.1.3: | |
| 251 Added SDL_FreeRW() to the API, to complement SDL_AllocRW() | |
| 252 | |
| 253 Added resizable window support - just add SDL_RESIZABLE to the | |
| 254 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events. | |
| 255 See SDL_events.h for details on the new SDL_ResizeEvent structure. | |
| 256 | |
| 257 Added condition variable support, based on mutexes and semaphores. | |
| 258 SDL_CreateCond() | |
| 259 SDL_DestroyCond() | |
| 260 SDL_CondSignal() | |
| 261 SDL_CondBroadcast() | |
| 262 SDL_CondWait() | |
| 263 SDL_CondTimedWait() | |
| 264 The new function prototypes are in SDL_mutex.h | |
| 265 | |
| 266 Added counting semaphore support, based on the mutex primitive. | |
| 267 SDL_CreateSemaphore() | |
| 268 SDL_DestroySemaphore() | |
| 269 SDL_SemWait() | |
| 270 SDL_SemTryWait() | |
| 271 SDL_SemWaitTimeout() | |
| 272 SDL_SemPost() | |
| 273 SDL_SemValue() | |
| 274 The new function prototypes are in SDL_mutex.h | |
| 275 | |
| 276 Added support for asynchronous blitting. To take advantage of this, | |
| 277 you must set the SDL_ASYNCBLIT flag when setting the video mode and | |
| 278 creating surfaces that you want accelerated in this way. You must | |
| 279 lock surfaces that have this flag set, and the lock will block until | |
| 280 any queued blits have completed. | |
| 281 | |
| 282 Added YUV video overlay support. | |
| 283 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU. | |
| 284 This function creates an overlay surface: | |
| 285 SDL_CreateYUVOverlay() | |
| 286 You must lock and unlock the overlay to get access to the data: | |
| 287 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay() | |
| 288 You can then display the overlay: | |
| 289 SDL_DisplayYUVOverlay() | |
| 290 You must free the overlay when you are done using it: | |
| 291 SDL_FreeYUVOverlay() | |
| 292 See SDL_video.h for the full function prototypes. | |
| 293 | |
| 294 The joystick hat position constants have been changed: | |
| 295 Old constant New constant | |
| 296 ------------ ------------ | |
| 297 0 SDL_HAT_CENTERED | |
| 298 1 SDL_HAT_UP | |
| 299 2 SDL_HAT_RIGHTUP | |
| 300 3 SDL_HAT_RIGHT | |
| 301 4 SDL_HAT_RIGHTDOWN | |
| 302 5 SDL_HAT_DOWN | |
| 303 6 SDL_HAT_LEFTDOWN | |
| 304 7 SDL_HAT_LEFT | |
| 305 8 SDL_HAT_LEFTUP | |
| 306 The new constants are bitmasks, so you can check for the | |
| 307 individual axes like this: | |
| 308 if ( hat_position & SDL_HAT_UP ) { | |
| 309 } | |
| 310 and you'll catch left-up, up, and right-up. | |
| 311 | |
| 312 1.1.2: | |
| 313 Added multiple timer support: | |
| 314 SDL_AddTimer() and SDL_RemoveTimer() | |
| 315 | |
| 316 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL. | |
| 317 | |
| 318 1.1.0: | |
| 319 Added initial OpenGL support. | |
| 320 First set GL attributes (such as RGB depth, alpha depth, etc.) | |
| 321 SDL_GL_SetAttribute() | |
| 322 Then call SDL_SetVideoMode() with the SDL_OPENGL flag. | |
| 323 Perform all of your normal GL drawing. | |
| 324 Finally swap the buffers with the new SDL function: | |
| 325 SDL_GL_SwapBuffers() | |
| 326 See the new 'testgl' test program for an example of using GL with SDL. | |
| 327 | |
| 328 You can load GL extension functions by using the function: | |
| 329 SDL_GL_LoadProcAddress() | |
| 330 | |
| 331 Added functions to initialize and cleanup specific SDL subsystems: | |
| 332 SDL_InitSubSystem() and SDL_QuitSubSystem() | |
| 333 | |
| 334 Added user-defined event type: | |
| 335 typedef struct { | |
| 336 Uint8 type; | |
| 337 int code; | |
| 338 void *data1; | |
| 339 void *data2; | |
| 340 } SDL_UserEvent; | |
| 341 This structure is in the "user" member of an SDL_Event. | |
| 342 | |
| 343 Added a function to push events into the event queue: | |
| 344 SDL_PushEvent() | |
| 345 | |
| 346 Example of using the new SDL user-defined events: | |
| 347 { | |
| 348 SDL_Event event; | |
| 349 | |
| 350 event.type = SDL_USEREVENT; | |
| 351 event.user.code = my_event_code; | |
| 352 event.user.data1 = significant_data; | |
| 353 event.user.data2 = 0; | |
| 354 SDL_PushEvent(&event); | |
| 355 } | |
| 356 | |
| 357 Added a function to get mouse deltas since last query: | |
| 358 SDL_GetRelativeMouseState() | |
| 359 | |
| 360 Added a boolean datatype to SDL_types.h: | |
| 361 SDL_bool = { SDL_TRUE, SDL_FALSE } | |
| 362 | |
| 363 Added a function to get the current audio status: | |
| 364 SDL_GetAudioState(); | |
| 365 It returns one of: | |
| 366 SDL_AUDIO_STOPPED, | |
| 367 SDL_AUDIO_PLAYING, | |
| 368 SDL_AUDIO_PAUSED | |
| 369 | |
| 370 Added an AAlib driver (ASCII Art) - by Stephane Peter. | |
| 371 | |
| 372 1.0.6: | |
| 373 The input grab state is reset after each call to SDL_SetVideoMode(). | |
| 374 The input is grabbed by default in fullscreen mode, and ungrabbed in | |
| 375 windowed mode. If you want to set input grab to a particular value, | |
| 376 you should set it after each call to SDL_SetVideoMode(). | |
| 377 | |
| 378 1.0.5: | |
| 379 Exposed SDL_AudioInit(), SDL_VideoInit() | |
| 380 Added SDL_AudioDriverName() and SDL_VideoDriverName() | |
| 381 | |
| 382 Added new window manager function: | |
| 383 SDL_WM_ToggleFullScreen() | |
| 384 This is currently implemented only on Linux | |
| 385 | |
| 386 The ALT-ENTER code has been removed - it's not appropriate for a | |
| 387 lib to bind keys when they aren't even emergency escape sequences. | |
| 388 | |
| 389 ALT-ENTER functionality can be implemented with the following code: | |
| 390 | |
| 391 int Handle_AltEnter(const SDL_Event *event) | |
| 392 { | |
| 393 if ( event->type == SDL_KEYDOWN ) { | |
| 394 if ( (event->key.keysym.sym == SDLK_RETURN) && | |
| 395 (event->key.keysym.mod & KMOD_ALT) ) { | |
| 396 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); | |
| 397 return(0); | |
| 398 } | |
| 399 } | |
| 400 return(1); | |
| 401 } | |
| 402 SDL_SetEventFilter(Handle_AltEnter); | |
| 403 | |
| 404 1.0.3: | |
| 405 Under X11, if you grab the input and hide the mouse cursor, | |
| 406 the mouse will go into a "relative motion" mode where you | |
| 407 will always get relative motion events no matter how far in | |
| 408 each direction you move the mouse - relative motion is not | |
| 409 bounded by the edges of the window (though the absolute values | |
| 410 of the mouse positions are clamped by the size of the window). | |
| 411 The SVGAlib, framebuffer console, and DirectInput drivers all | |
| 412 have this behavior naturally, and the GDI and BWindow drivers | |
| 413 never go into "relative motion" mode. | |
| 414 | |
| 415 1.0.2: | |
| 416 Added a function to enable keyboard repeat: | |
| 417 SDL_EnableKeyRepeat() | |
| 418 | |
| 419 Added a function to grab the mouse and keyboard input | |
| 420 SDL_WM_GrabInput() | |
| 421 | |
| 422 Added a function to iconify the window. | |
| 423 SDL_WM_IconifyWindow() | |
| 424 If this function succeeds, the application will receive an event | |
| 425 signaling SDL_APPACTIVE event | |
| 426 | |
| 427 1.0.1: | |
| 428 Added constants to SDL_audio.h for 16-bit native byte ordering: | |
| 429 AUDIO_U16SYS, AUDIO_S16SYS | |
| 430 | |
| 431 1.0.0: | |
| 432 New public release | |
| 433 | |
| 434 Version 0.11: | |
| 435 | |
| 436 0.11.5: | |
| 437 A new function SDL_GetVideoSurface() has been added, and returns | |
| 438 a pointer to the current display surface. | |
| 439 | |
| 440 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and | |
| 441 a new function SDL_CreateRGBSurfaceFrom() has been added to allow | |
| 442 creating an SDL surface from an existing pixel data buffer. | |
| 443 | |
| 444 Added SDL_GetRGB() to the headers and documentation. | |
| 445 | |
| 446 0.11.4: | |
| 447 SDL_SetLibraryPath() is no longer meaningful, and has been removed. | |
| 448 | |
| 449 0.11.3: | |
| 450 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from | |
| 451 installing fatal signal handlers on operating systems that support | |
| 452 them. | |
| 453 | |
| 454 Version 0.9: | |
| 455 | |
| 456 0.9.15: | |
| 457 SDL_CreateColorCursor() has been removed. Color cursors should | |
| 458 be implemented as sprites, blitted by the application when the | |
| 459 cursor moves. To get smooth color cursor updates when the app | |
| 460 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This | |
| 461 allows you to handle the mouse motion in another thread from an | |
| 462 event filter function, but is currently only supported by Linux | |
| 463 and BeOS. Note that you'll have to protect the display surface | |
| 464 from multi-threaded access by using mutexes if you do this. | |
| 465 | |
| 466 Thread-safe surface support has been removed from SDL. | |
| 467 This makes blitting somewhat faster, by removing SDL_MiddleBlit(). | |
| 468 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead. | |
| 469 You can make your surfaces thread-safe by allocating your own | |
| 470 mutex and making lock/unlock calls around accesses to your surface. | |
| 471 | |
| 472 0.9.14: | |
| 473 SDL_GetMouseState() now takes pointers to int rather than Uint16. | |
| 474 | |
| 475 If you set the SDL_WINDOWID environment variable under UNIX X11, | |
| 476 SDL will use that as the main window instead of creating it's own. | |
| 477 This is an unsupported extension to SDL, and not portable at all. | |
| 478 | |
| 479 0.9.13: | |
| 480 Added a function SDL_SetLibraryPath() which can be used to specify | |
| 481 the directory containing the SDL dynamic libraries. This is useful | |
| 482 for commercial applications which ship with particular versions | |
| 483 of the libraries, and for security on multi-user systems. | |
| 484 If this function is not used, the default system directories are | |
| 485 searched using the native dynamic object loading mechanism. | |
| 486 | |
| 487 In order to support C linkage under Visual C++, you must declare | |
| 488 main() without any return type: | |
| 489 main(int argc, char *argv[]) { | |
| 490 /* Do the program... */ | |
| 491 return(0); | |
| 492 } | |
| 493 C++ programs should also return a value if compiled under VC++. | |
| 494 | |
| 495 The blit_endian member of the SDL_VideoInfo struct has been removed. | |
| 496 | |
| 497 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there | |
| 498 is now no longer any function to translate a keysym to a character. | |
| 499 | |
| 500 The SDL_keysym structure has been extended with a 'scancode' and | |
| 501 'unicode' member. The 'scancode' is a hardware specific scancode | |
| 502 for the key that was pressed, and may be 0. The 'unicode' member | |
| 503 is a 16-bit UNICODE translation of the key that was pressed along | |
| 504 with any modifiers or compose keys that have been pressed. | |
| 505 If no UNICODE translation exists for the key, 'unicode' will be 0. | |
| 506 | |
| 507 Added a function SDL_EnableUNICODE() to enable/disable UNICODE | |
| 508 translation of character keypresses. Translation defaults off. | |
| 509 | |
| 510 To convert existing code to use the new API, change code which | |
| 511 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(), | |
| 512 and change code which uses it to get the ASCII value of a sym to | |
| 513 use the 'unicode' member of the event keysym. | |
| 514 | |
| 515 0.9.12: | |
| 516 There is partial support for 64-bit datatypes. I don't recommend | |
| 517 you use this if you have a choice, because 64-bit datatypes are not | |
| 518 supported on many platforms. On platforms for which it is supported, | |
| 519 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and | |
| 520 you can use the Uint64 and Sint64 datatypes. | |
| 521 | |
| 522 Added functions to SDL_endian.h to support 64-bit datatypes: | |
| 523 SDL_SwapLE64(), SDL_SwapBE64(), | |
| 524 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64() | |
| 525 | |
| 526 A new member "len_ratio" has been added to the SDL_AudioCVT structure, | |
| 527 and allows you to determine either the original buffer length or the | |
| 528 converted buffer length, given the other. | |
| 529 | |
| 530 A new function SDL_FreeWAV() has been added to the API to free data | |
| 531 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since | |
| 532 the gcc compiled DLL uses a different heap than VC++ compiled apps. | |
| 533 | |
| 534 SDL now has initial support for international keyboards using the | |
| 535 Latin character set. | |
| 536 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD | |
| 537 compile-time variable, or you can set the environment variable | |
| 538 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire. | |
| 539 The valid values for these variables can be found in SDL_keyboard.c | |
| 540 | |
| 541 Full support for German and French keyboards under X11 is implemented. | |
| 542 | |
| 543 0.9.11: | |
| 544 The THREADED_EVENTS compile-time define has been replaced with the | |
| 545 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(), | |
| 546 SDL will create a separate thread to perform input event handling. | |
| 547 If this flag is passed to SDL_Init(), and the OS doesn't support | |
| 548 event handling in a separate thread, SDL_Init() will fail. | |
| 549 Be sure to add calls to SDL_Delay() in your main thread to allow | |
| 550 the OS to schedule your event thread, or it may starve, leading | |
| 551 to slow event delivery and/or dropped events. | |
| 552 Currently MacOS and Win32 do not support this flag, while BeOS | |
| 553 and Linux do support it. I recommend that your application only | |
| 554 use this flag if absolutely necessary. | |
| 555 | |
| 556 The SDL thread function passed to SDL_CreateThread() now returns a | |
| 557 status. This status can be retrieved by passing a non-NULL pointer | |
| 558 as the 'status' argument to SDL_WaitThread(). | |
| 559 | |
| 560 The volume parameter to SDL_MixAudio() has been increased in range | |
| 561 from (0-8) to (0-128) | |
| 562 | |
| 563 SDL now has a data source abstraction which can encompass a file, | |
| 564 an area of memory, or any custom object you can envision. It uses | |
| 565 these abstractions, SDL_RWops, in the endian read/write functions, | |
| 566 and the built-in WAV and BMP file loaders. This means you can load | |
| 567 WAV chunks from memory mapped files, compressed archives, network | |
| 568 pipes, or anything else that has a data read abstraction. | |
| 569 | |
| 570 There are three built-in data source abstractions: | |
| 571 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem() | |
| 572 along with a generic data source allocation function: | |
| 573 SDL_AllocRW() | |
| 574 These data sources can be used like stdio file pointers with the | |
| 575 following convenience functions: | |
| 576 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose() | |
| 577 These functions are defined in the new header file "SDL_rwops.h" | |
| 578 | |
| 579 The endian swapping functions have been turned into macros for speed | |
| 580 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines | |
| 581 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on | |
| 582 the endianness of the host system. | |
| 583 | |
| 584 The endian read/write functions now take an SDL_RWops pointer | |
| 585 instead of a stdio FILE pointer, to support the new data source | |
| 586 abstraction. | |
| 587 | |
| 588 The SDL_*LoadWAV() functions have been replaced with a single | |
| 589 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's | |
| 590 first parameter, and a flag whether or not to automatically | |
| 591 free it as the second parameter. SDL_LoadWAV() is a macro for | |
| 592 backward compatibility and convenience: | |
| 593 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...); | |
| 594 | |
| 595 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced | |
| 596 with a single function that takes a SDL_RWops pointer as it's | |
| 597 first parameter, and a flag whether or not to automatically | |
| 598 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP() | |
| 599 are macros for backward compatibility and convenience: | |
| 600 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...); | |
| 601 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...); | |
| 602 Note that these functions use SDL_RWseek() extensively, and should | |
| 603 not be used on pipes or other non-seekable data sources. | |
| 604 | |
| 605 0.9.10: | |
| 606 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been | |
| 607 extended to support multiple types of display drivers, as well as | |
| 608 safe access to the X11 display when THREADED_EVENTS is enabled. | |
| 609 The new structures are documented in the SDL_syswm.h header file. | |
| 610 | |
| 611 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard | |
| 612 should now work properly, as well as the "Windows" keys on US | |
| 613 keyboards. | |
| 614 | |
| 615 The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab | |
| 616 instead of trying to open each block device on the system. | |
| 617 The CD must be listed in /etc/fstab as using the iso9660 filesystem. | |
| 618 | |
| 619 On Linux, if you define THREADED_EVENTS at compile time, a separate | |
| 620 thread will be spawned to gather X events asynchronously from the | |
| 621 graphics updates. This hasn't been extensively tested, but it does | |
| 622 provide a means of handling keyboard and mouse input in a separate | |
| 623 thread from the graphics thread. (This is now enabled by default.) | |
| 624 | |
| 625 A special access function SDL_PeepEvents() allows you to manipulate | |
| 626 the event queue in a thread-safe manner, including peeking at events, | |
| 627 removing events of a specified type, and adding new events of arbitrary | |
| 628 type to the queue (use the new 'user' member of the SDL_Event type). | |
| 629 | |
| 630 If you use SDL_PeepEvents() to gather events, then the main graphics | |
| 631 thread needs to call SDL_PumpEvents() periodically to drive the event | |
| 632 loop and generate input events. This is not necessary if SDL has been | |
| 633 compiled with THREADED_EVENTS defined, but doesn't hurt. | |
| 634 | |
| 635 A new function SDL_ThreadID() returns the identifier associated with | |
| 636 the current thread. | |
| 637 | |
| 638 0.9.9: | |
| 639 The AUDIO_STEREO format flag has been replaced with a new 'channels' | |
| 640 member of the SDL_AudioSpec structure. The channels are 1 for mono | |
| 641 audio, and 2 for stereo audio. In the future more channels may be | |
| 642 supported for 3D surround sound. | |
| 643 | |
| 644 The SDL_MixAudio() function now takes an additional volume parameter, | |
| 645 which should be set to SDL_MIX_MAXVOLUME for compatibility with the | |
| 646 original function. | |
| 647 | |
| 648 The CD-ROM functions which take a 'cdrom' parameter can now be | |
| 649 passed NULL, and will act on the last successfully opened CD-ROM. | |
| 650 | |
| 651 0.9.8: | |
| 652 No changes, bugfixes only. | |
| 653 | |
| 654 0.9.7: | |
| 655 No changes, bugfixes only. | |
| 656 | |
| 657 0.9.6: | |
| 658 Added a fast rectangle fill function: SDL_FillRect() | |
| 659 | |
| 660 Addition of a useful function for getting info on the video hardware: | |
| 661 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 662 This function replaces SDL_GetDisplayFormat(). | |
| 663 | |
| 664 Initial support for double-buffering: | |
| 665 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode() | |
| 666 Update the screen with a new function: SDL_Flip() | |
| 667 | |
| 668 SDL_AllocSurface() takes two new flags: | |
| 669 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits | |
| 670 and if the hardware supports hardware acceleration of colorkey blits | |
| 671 between two surfaces in video memory, to place the surface in video | |
| 672 memory if possible, otherwise it will be placed in system memory. | |
| 673 SDL_SRCALPHA means that the surface will be used for alpha blits and | |
| 674 if the hardware supports hardware acceleration of alpha blits between | |
| 675 two surfaces in video memory, to place the surface in video memory | |
| 676 if possible, otherwise it will be placed in system memory. | |
| 677 SDL_HWSURFACE now means that the surface will be created with the | |
| 678 same format as the display surface, since having surfaces in video | |
| 679 memory is only useful for fast blitting to the screen, and you can't | |
| 680 blit surfaces with different surface formats in video memory. | |
| 681 | |
| 682 0.9.5: | |
| 683 You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume | |
| 684 that the icon consists of the entire image. | |
| 685 | |
| 686 SDL_LowerBlit() is back -- but don't use it on the display surface. | |
| 687 It is exactly the same as SDL_MiddleBlit(), but doesn't check for | |
| 688 thread safety. | |
| 689 | |
| 690 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take | |
| 691 a FILE pointer instead of a file name. | |
| 692 | |
| 693 Added CD-ROM audio control API: | |
| 694 SDL_CDNumDrives() | |
| 695 SDL_CDName() | |
| 696 SDL_CDOpen() | |
| 697 SDL_CDStatus() | |
| 698 SDL_CDPlayTracks() | |
| 699 SDL_CDPlay() | |
| 700 SDL_CDPause() | |
| 701 SDL_CDResume() | |
| 702 SDL_CDStop() | |
| 703 SDL_CDEject() | |
| 704 SDL_CDClose() | |
| 705 | |
| 706 0.9.4: | |
| 707 No changes, bugfixes only. | |
| 708 | |
| 709 0.9.3: | |
| 710 Mouse motion event now includes relative motion information: | |
| 711 Sint16 event->motion.xrel, Sint16 event->motion.yrel | |
| 712 | |
| 713 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT | |
| 714 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile) | |
| 715 | |
| 716 0.9.2: | |
| 717 No changes, bugfixes only. | |
| 718 | |
| 719 0.9.1: | |
| 720 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now | |
| 721 automatically mapped on blit. | |
| 722 | |
| 723 0.8.0: | |
| 724 SDL stable release |