Mercurial > sdl-ios-xcode
annotate WhatsNew @ 4165:3b8ac3d311a2 SDL-1.2
Hello.
This patch provides basic support for video on the Sony PS3
Linux framebuffer. Scaling, format-conversion, and drawing is
done from the SPEs, so there is little performance impact to
PPE applications. This is by no means production quality code,
but it is a very good start and a good example of how to use the
PS3's hardware capabilities to accelerate video playback on
the box.
The driver has been verified to work with ffplay, mplayer and xine.
This piece of software has been developed at the IBM R&D Lab
in Boeblingen, Germany and is now returned to the community.
Enjoy !
Signed-off-by: D.Herrendoerfer < d.herrendoerfer [at] de [dot] ibm [dot] com >
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 02 Apr 2009 04:06:55 +0000 |
| parents | 82dab719502e |
| children | e1826b24ee8d |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 This is a list of API changes in SDL's version history. | |
| 3 | |
| 4 Version 1.0: | |
| 5 | |
| 4113 | 6 1.2.13: |
| 7 Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants. | |
| 8 | |
|
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9 1.2.12: |
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10 Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling |
|
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11 of the screensaver on Mac OS X and X11. |
|
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12 |
| 1507 | 13 1.2.10: |
| 1794 | 14 If SDL_OpenAudio() is passed zero for the desired format |
| 15 fields, the following environment variables will be used | |
| 16 to fill them in: | |
| 17 SDL_AUDIO_FREQUENCY | |
| 18 SDL_AUDIO_FORMAT | |
| 19 SDL_AUDIO_CHANNELS | |
| 20 SDL_AUDIO_SAMPLES | |
| 21 If an environment variable is not specified, it will be set | |
| 22 to a reasonable default value. | |
| 23 | |
| 1765 | 24 Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment |
| 25 variable, currently supported on X11 Xinerama configurations. | |
| 26 | |
|
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Implemented bug #2, 117:
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27 Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications. |
|
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28 |
| 1737 | 29 Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration. |
| 30 | |
|
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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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31 Added current_w and current_h to the SDL_VideoInfo structure, |
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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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32 which is set to the desktop resolution during video intialization, |
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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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33 and then set to the current resolution when a video mode is 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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34 |
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35 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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36 the current video mode (or the desktop mode if no mode has been set.) |
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8d9bb0cf2c2a
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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37 |
| 1507 | 38 Added SDL_GetKeyRepeat() |
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39 |
| 1507 | 40 Added SDL_config.h, with defaults for various build environments. |
| 41 | |
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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42 1.2.7: |
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43 Added CPU feature detection functions to SDL_cpuinfo.h: |
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44 SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(), |
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45 SDL_HasAltiVec() |
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Added function to create RWops from const memory: SDL_RWFromConstMem()
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46 Added function to create RWops from const memory: SDL_RWFromConstMem() |
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47 |
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Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
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48 1.2.6: |
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49 Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() |
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50 |
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51 Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA |
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52 |
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53 1.2.5: |
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54 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5) |
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55 |
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56 Added SDL_GL_STEREO for stereoscopic OpenGL contexts |
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57 |
| 0 | 58 1.2.0: |
| 59 Added SDL_VIDEOEXPOSE event to signal that the screen needs to | |
| 60 be redrawn. This is currently only delivered to OpenGL windows | |
| 61 on X11, though it may be delivered in the future when the video | |
| 62 memory is lost under DirectX. | |
| 63 | |
| 64 1.1.8: | |
| 65 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window | |
| 66 that has no title bar or frame decoration. Fullscreen video | |
| 67 modes automatically have this flag set. | |
| 68 | |
| 69 Added a function to query the clipping rectangle for a surface: | |
| 70 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect) | |
| 71 | |
| 72 Added a function to query the current event filter: | |
| 73 SDL_EventFilter SDL_GetEventFilter(void) | |
| 74 | |
| 75 If you pass -1 to SDL_ShowCursor(), it won't change the current | |
| 76 cursor visibility state, but will still return it. | |
| 77 | |
| 78 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning | |
| 79 you can nest them as deep as you want, as long as each lock call | |
| 80 has a matching unlock call. The surface remains locked until the | |
| 81 last matching unlock call. | |
| 82 | |
| 83 Note that you may not blit to or from a locked surface. | |
| 84 | |
| 85 1.1.7: | |
| 86 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take | |
| 87 arrays of Uint16 values instead of Uint8 values. For the most part, | |
| 88 you can just take your old values and shift them up 8 bits to get | |
| 89 new correct values for your gamma ramps. | |
| 90 | |
| 91 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface() | |
| 92 and SDL will try to RLE accelerate colorkey and alpha blits in the | |
| 93 resulting surface. | |
| 94 | |
| 95 1.1.6: | |
| 96 Added a function to return the thread ID of a specific thread: | |
| 97 Uint32 SDL_GetThreadID(SDL_Thread *thread) | |
| 98 If 'thread' is NULL, this function returns the id for this thread. | |
| 99 | |
| 100 1.1.5: | |
| 101 The YUV overlay structure has been changed to use an array of | |
| 102 pitches and pixels representing the planes of a YUV image, to | |
| 103 better enable hardware acceleration. The YV12 and IYUV formats | |
| 104 each have three planes, corresponding to the Y, U, and V portions | |
| 105 of the image, while packed pixel YUV formats just have one plane. | |
| 106 | |
| 107 For palettized mode (8bpp), the screen colormap is now split in | |
| 108 a physical and a logical palette. The physical palette determines | |
| 109 what colours the screen pixels will get when displayed, and the | |
| 110 logical palette controls the mapping from blits to/from the screen. | |
| 111 A new function, SDL_SetPalette() has been added to change | |
| 112 logical and physical palettes separately. SDL_SetColors() works | |
| 113 just as before, and is equivalent to calling SDL_SetPalette() with | |
| 114 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL). | |
| 115 | |
| 116 SDL_BlitSurface() no longer modifies the source rectangle, only the | |
| 117 destination rectangle. The width/height members of the destination | |
| 118 rectangle are ignored, only the position is used. | |
| 119 | |
| 120 The old source clipping function SDL_SetClipping() has been replaced | |
| 121 with a more useful function to set the destination clipping rectangle: | |
| 122 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect) | |
| 123 | |
| 124 Added a function to see what subsystems have been initialized: | |
| 125 Uint32 SDL_WasInit(Uint32 flags) | |
| 126 | |
| 127 The Big Alpha Flip: SDL now treats alpha as opacity like everybody | |
| 128 else, and not as transparency: | |
| 129 | |
| 130 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255 | |
| 131 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0 | |
| 132 Values between 0 and 255 vary from fully transparent to fully opaque. | |
| 133 | |
| 134 New functions: | |
| 135 SDL_DisplayFormatAlpha() | |
| 136 Returns a surface converted to a format with alpha-channel | |
| 137 that can be blit efficiently to the screen. (In other words, | |
| 138 like SDL_DisplayFormat() but the resulting surface has | |
| 139 an alpha channel.) This is useful for surfaces with alpha. | |
| 140 SDL_MapRGBA() | |
| 141 Works as SDL_MapRGB() but takes an additional alpha parameter. | |
| 142 SDL_GetRGBA() | |
| 143 Works as SDL_GetRGB() but also returns the alpha value | |
| 144 (SDL_ALPHA_OPAQUE for formats without an alpha channel) | |
| 145 | |
| 146 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in | |
| 147 the [0..255] interval. Previously, SDL_GetRGB() would return | |
| 148 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format. | |
| 149 (N.B.: This is broken for bit fields < 3 bits.) | |
| 150 | |
| 151 SDL_MapRGB() returns pixels in which the alpha channel is set opaque. | |
| 152 | |
| 153 SDL_SetAlpha() can now be used for both setting the per-surface | |
| 154 alpha, using the new way of thinking of alpha, and also to enable | |
| 155 and disable per-pixel alpha blending for surfaces with an alpha | |
| 156 channel: | |
| 157 To disable alpha blending: | |
| 158 SDL_SetAlpha(surface, 0, 0); | |
| 159 To re-enable alpha blending: | |
| 160 SDL_SetAlpha(surface, SDL_SRCALPHA, 0); | |
| 161 Surfaces with an alpha channel have blending enabled by default. | |
| 162 | |
| 163 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests | |
| 164 RLE acceleration of blits, just as like with SDL_SetColorKey(). | |
| 165 This flag can be set for both surfaces with an alpha channel | |
| 166 and surfaces with an alpha value set by SDL_SetAlpha(). | |
| 167 As always, RLE surfaces must be locked before pixel access is | |
| 168 allowed, and unlocked before any other SDL operations are done | |
| 169 on it. | |
| 170 | |
| 171 The blit semantics for surfaces with and without alpha and colorkey | |
| 172 have now been defined: | |
| 173 | |
| 174 RGBA->RGB: | |
| 175 SDL_SRCALPHA set: | |
| 176 alpha-blend (using alpha-channel). | |
| 177 SDL_SRCCOLORKEY ignored. | |
| 178 SDL_SRCALPHA not set: | |
| 179 copy RGB. | |
| 180 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 181 RGB values of the source colour key, ignoring alpha in the | |
| 182 comparison. | |
| 183 | |
| 184 RGB->RGBA: | |
| 185 SDL_SRCALPHA set: | |
| 186 alpha-blend (using the source per-surface alpha value); | |
| 187 set destination alpha to opaque. | |
| 188 SDL_SRCALPHA not set: | |
| 189 copy RGB, set destination alpha to opaque. | |
| 190 both: | |
| 191 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 192 source colour key. | |
| 193 | |
| 194 RGBA->RGBA: | |
| 195 SDL_SRCALPHA set: | |
| 196 alpha-blend (using the source alpha channel) the RGB values; | |
| 197 leave destination alpha untouched. [Note: is this correct?] | |
| 198 SDL_SRCCOLORKEY ignored. | |
| 199 SDL_SRCALPHA not set: | |
| 200 copy all of RGBA to the destination. | |
| 201 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 202 RGB values of the source colour key, ignoring alpha in the | |
| 203 comparison. | |
| 204 | |
| 205 RGB->RGB: | |
| 206 SDL_SRCALPHA set: | |
| 207 alpha-blend (using the source per-surface alpha value). | |
| 208 SDL_SRCALPHA not set: | |
| 209 copy RGB. | |
| 210 both: | |
| 211 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 212 source colour key. | |
| 213 | |
| 214 As a special case, blits from surfaces with per-surface alpha | |
| 215 value of 128 (50% transparency) are optimised and much faster | |
| 216 than other alpha values. This does not apply to surfaces with | |
| 217 alpha channels (per-pixel alpha). | |
| 218 | |
| 219 New functions for manipulating the gamma of the display have | |
| 220 been added: | |
| 221 int SDL_SetGamma(float red, float green, float blue); | |
| 222 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); | |
| 223 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); | |
| 224 Gamma ramps are tables with 256 entries which map the screen color | |
| 225 components into actually displayed colors. For an example of | |
| 226 implementing gamma correction and gamma fades, see test/testgamma.c | |
| 227 Gamma control is not supported on all hardware. | |
| 228 | |
| 229 1.1.4: | |
| 230 The size of the SDL_CDtrack structure changed from 8 to 12 bytes | |
| 231 as the size of the length member was extended to 32 bits. | |
| 232 | |
| 233 You can now use SDL for 2D blitting with a GL mode by passing the | |
| 234 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or | |
| 235 32 bpp, and the data in the framebuffer is put into the GL scene | |
| 236 when you call SDL_UpdateRects(), and the scene will be visible | |
| 237 when you call SDL_GL_SwapBuffers(). | |
| 238 | |
| 239 Run the "testgl" test program with the -logo command line option | |
| 240 to see an example of this blending of 2D and 3D in SDL. | |
| 241 | |
| 242 1.1.3: | |
| 243 Added SDL_FreeRW() to the API, to complement SDL_AllocRW() | |
| 244 | |
| 245 Added resizable window support - just add SDL_RESIZABLE to the | |
| 246 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events. | |
| 247 See SDL_events.h for details on the new SDL_ResizeEvent structure. | |
| 248 | |
| 249 Added condition variable support, based on mutexes and semaphores. | |
| 250 SDL_CreateCond() | |
| 251 SDL_DestroyCond() | |
| 252 SDL_CondSignal() | |
| 253 SDL_CondBroadcast() | |
| 254 SDL_CondWait() | |
| 255 SDL_CondTimedWait() | |
| 256 The new function prototypes are in SDL_mutex.h | |
| 257 | |
| 258 Added counting semaphore support, based on the mutex primitive. | |
| 259 SDL_CreateSemaphore() | |
| 260 SDL_DestroySemaphore() | |
| 261 SDL_SemWait() | |
| 262 SDL_SemTryWait() | |
| 263 SDL_SemWaitTimeout() | |
| 264 SDL_SemPost() | |
| 265 SDL_SemValue() | |
| 266 The new function prototypes are in SDL_mutex.h | |
| 267 | |
| 268 Added support for asynchronous blitting. To take advantage of this, | |
| 269 you must set the SDL_ASYNCBLIT flag when setting the video mode and | |
| 270 creating surfaces that you want accelerated in this way. You must | |
| 271 lock surfaces that have this flag set, and the lock will block until | |
| 272 any queued blits have completed. | |
| 273 | |
| 274 Added YUV video overlay support. | |
| 275 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU. | |
| 276 This function creates an overlay surface: | |
| 277 SDL_CreateYUVOverlay() | |
| 278 You must lock and unlock the overlay to get access to the data: | |
| 279 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay() | |
| 280 You can then display the overlay: | |
| 281 SDL_DisplayYUVOverlay() | |
| 282 You must free the overlay when you are done using it: | |
| 283 SDL_FreeYUVOverlay() | |
| 284 See SDL_video.h for the full function prototypes. | |
| 285 | |
| 286 The joystick hat position constants have been changed: | |
| 287 Old constant New constant | |
| 288 ------------ ------------ | |
| 289 0 SDL_HAT_CENTERED | |
| 290 1 SDL_HAT_UP | |
| 291 2 SDL_HAT_RIGHTUP | |
| 292 3 SDL_HAT_RIGHT | |
| 293 4 SDL_HAT_RIGHTDOWN | |
| 294 5 SDL_HAT_DOWN | |
| 295 6 SDL_HAT_LEFTDOWN | |
| 296 7 SDL_HAT_LEFT | |
| 297 8 SDL_HAT_LEFTUP | |
| 298 The new constants are bitmasks, so you can check for the | |
| 299 individual axes like this: | |
| 300 if ( hat_position & SDL_HAT_UP ) { | |
| 301 } | |
| 302 and you'll catch left-up, up, and right-up. | |
| 303 | |
| 304 1.1.2: | |
| 305 Added multiple timer support: | |
| 306 SDL_AddTimer() and SDL_RemoveTimer() | |
| 307 | |
| 308 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL. | |
| 309 | |
| 310 1.1.0: | |
| 311 Added initial OpenGL support. | |
| 312 First set GL attributes (such as RGB depth, alpha depth, etc.) | |
| 313 SDL_GL_SetAttribute() | |
| 314 Then call SDL_SetVideoMode() with the SDL_OPENGL flag. | |
| 315 Perform all of your normal GL drawing. | |
| 316 Finally swap the buffers with the new SDL function: | |
| 317 SDL_GL_SwapBuffers() | |
| 318 See the new 'testgl' test program for an example of using GL with SDL. | |
| 319 | |
| 320 You can load GL extension functions by using the function: | |
| 321 SDL_GL_LoadProcAddress() | |
| 322 | |
| 323 Added functions to initialize and cleanup specific SDL subsystems: | |
| 324 SDL_InitSubSystem() and SDL_QuitSubSystem() | |
| 325 | |
| 326 Added user-defined event type: | |
| 327 typedef struct { | |
| 328 Uint8 type; | |
| 329 int code; | |
| 330 void *data1; | |
| 331 void *data2; | |
| 332 } SDL_UserEvent; | |
| 333 This structure is in the "user" member of an SDL_Event. | |
| 334 | |
| 335 Added a function to push events into the event queue: | |
| 336 SDL_PushEvent() | |
| 337 | |
| 338 Example of using the new SDL user-defined events: | |
| 339 { | |
| 340 SDL_Event event; | |
| 341 | |
| 342 event.type = SDL_USEREVENT; | |
| 343 event.user.code = my_event_code; | |
| 344 event.user.data1 = significant_data; | |
| 345 event.user.data2 = 0; | |
| 346 SDL_PushEvent(&event); | |
| 347 } | |
| 348 | |
| 349 Added a function to get mouse deltas since last query: | |
| 350 SDL_GetRelativeMouseState() | |
| 351 | |
| 352 Added a boolean datatype to SDL_types.h: | |
| 353 SDL_bool = { SDL_TRUE, SDL_FALSE } | |
| 354 | |
| 355 Added a function to get the current audio status: | |
| 356 SDL_GetAudioState(); | |
| 357 It returns one of: | |
| 358 SDL_AUDIO_STOPPED, | |
| 359 SDL_AUDIO_PLAYING, | |
| 360 SDL_AUDIO_PAUSED | |
| 361 | |
| 362 Added an AAlib driver (ASCII Art) - by Stephane Peter. | |
| 363 | |
| 364 1.0.6: | |
| 365 The input grab state is reset after each call to SDL_SetVideoMode(). | |
| 366 The input is grabbed by default in fullscreen mode, and ungrabbed in | |
| 367 windowed mode. If you want to set input grab to a particular value, | |
| 368 you should set it after each call to SDL_SetVideoMode(). | |
| 369 | |
| 370 1.0.5: | |
| 371 Exposed SDL_AudioInit(), SDL_VideoInit() | |
| 372 Added SDL_AudioDriverName() and SDL_VideoDriverName() | |
| 373 | |
| 374 Added new window manager function: | |
| 375 SDL_WM_ToggleFullScreen() | |
| 376 This is currently implemented only on Linux | |
| 377 | |
| 378 The ALT-ENTER code has been removed - it's not appropriate for a | |
| 379 lib to bind keys when they aren't even emergency escape sequences. | |
| 380 | |
| 381 ALT-ENTER functionality can be implemented with the following code: | |
| 382 | |
| 383 int Handle_AltEnter(const SDL_Event *event) | |
| 384 { | |
| 385 if ( event->type == SDL_KEYDOWN ) { | |
| 386 if ( (event->key.keysym.sym == SDLK_RETURN) && | |
| 387 (event->key.keysym.mod & KMOD_ALT) ) { | |
| 388 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); | |
| 389 return(0); | |
| 390 } | |
| 391 } | |
| 392 return(1); | |
| 393 } | |
| 394 SDL_SetEventFilter(Handle_AltEnter); | |
| 395 | |
| 396 1.0.3: | |
| 397 Under X11, if you grab the input and hide the mouse cursor, | |
| 398 the mouse will go into a "relative motion" mode where you | |
| 399 will always get relative motion events no matter how far in | |
| 400 each direction you move the mouse - relative motion is not | |
| 401 bounded by the edges of the window (though the absolute values | |
| 402 of the mouse positions are clamped by the size of the window). | |
| 403 The SVGAlib, framebuffer console, and DirectInput drivers all | |
| 404 have this behavior naturally, and the GDI and BWindow drivers | |
| 405 never go into "relative motion" mode. | |
| 406 | |
| 407 1.0.2: | |
| 408 Added a function to enable keyboard repeat: | |
| 409 SDL_EnableKeyRepeat() | |
| 410 | |
| 411 Added a function to grab the mouse and keyboard input | |
| 412 SDL_WM_GrabInput() | |
| 413 | |
| 414 Added a function to iconify the window. | |
| 415 SDL_WM_IconifyWindow() | |
| 416 If this function succeeds, the application will receive an event | |
| 417 signaling SDL_APPACTIVE event | |
| 418 | |
| 419 1.0.1: | |
| 420 Added constants to SDL_audio.h for 16-bit native byte ordering: | |
| 421 AUDIO_U16SYS, AUDIO_S16SYS | |
| 422 | |
| 423 1.0.0: | |
| 424 New public release | |
| 425 | |
| 426 Version 0.11: | |
| 427 | |
| 428 0.11.5: | |
| 429 A new function SDL_GetVideoSurface() has been added, and returns | |
| 430 a pointer to the current display surface. | |
| 431 | |
| 432 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and | |
| 433 a new function SDL_CreateRGBSurfaceFrom() has been added to allow | |
| 434 creating an SDL surface from an existing pixel data buffer. | |
| 435 | |
| 436 Added SDL_GetRGB() to the headers and documentation. | |
| 437 | |
| 438 0.11.4: | |
| 439 SDL_SetLibraryPath() is no longer meaningful, and has been removed. | |
| 440 | |
| 441 0.11.3: | |
| 442 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from | |
| 443 installing fatal signal handlers on operating systems that support | |
| 444 them. | |
| 445 | |
| 446 Version 0.9: | |
| 447 | |
| 448 0.9.15: | |
| 449 SDL_CreateColorCursor() has been removed. Color cursors should | |
| 450 be implemented as sprites, blitted by the application when the | |
| 451 cursor moves. To get smooth color cursor updates when the app | |
| 452 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This | |
| 453 allows you to handle the mouse motion in another thread from an | |
| 454 event filter function, but is currently only supported by Linux | |
| 455 and BeOS. Note that you'll have to protect the display surface | |
| 456 from multi-threaded access by using mutexes if you do this. | |
| 457 | |
| 458 Thread-safe surface support has been removed from SDL. | |
| 459 This makes blitting somewhat faster, by removing SDL_MiddleBlit(). | |
| 460 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead. | |
| 461 You can make your surfaces thread-safe by allocating your own | |
| 462 mutex and making lock/unlock calls around accesses to your surface. | |
| 463 | |
| 464 0.9.14: | |
| 465 SDL_GetMouseState() now takes pointers to int rather than Uint16. | |
| 466 | |
| 467 If you set the SDL_WINDOWID environment variable under UNIX X11, | |
| 468 SDL will use that as the main window instead of creating it's own. | |
| 469 This is an unsupported extension to SDL, and not portable at all. | |
| 470 | |
| 471 0.9.13: | |
| 472 Added a function SDL_SetLibraryPath() which can be used to specify | |
| 473 the directory containing the SDL dynamic libraries. This is useful | |
| 474 for commercial applications which ship with particular versions | |
| 475 of the libraries, and for security on multi-user systems. | |
| 476 If this function is not used, the default system directories are | |
| 477 searched using the native dynamic object loading mechanism. | |
| 478 | |
| 479 In order to support C linkage under Visual C++, you must declare | |
| 480 main() without any return type: | |
| 481 main(int argc, char *argv[]) { | |
| 482 /* Do the program... */ | |
| 483 return(0); | |
| 484 } | |
| 485 C++ programs should also return a value if compiled under VC++. | |
| 486 | |
| 487 The blit_endian member of the SDL_VideoInfo struct has been removed. | |
| 488 | |
| 489 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there | |
| 490 is now no longer any function to translate a keysym to a character. | |
| 491 | |
| 492 The SDL_keysym structure has been extended with a 'scancode' and | |
| 493 'unicode' member. The 'scancode' is a hardware specific scancode | |
| 494 for the key that was pressed, and may be 0. The 'unicode' member | |
| 495 is a 16-bit UNICODE translation of the key that was pressed along | |
| 496 with any modifiers or compose keys that have been pressed. | |
| 497 If no UNICODE translation exists for the key, 'unicode' will be 0. | |
| 498 | |
| 499 Added a function SDL_EnableUNICODE() to enable/disable UNICODE | |
| 500 translation of character keypresses. Translation defaults off. | |
| 501 | |
| 502 To convert existing code to use the new API, change code which | |
| 503 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(), | |
| 504 and change code which uses it to get the ASCII value of a sym to | |
| 505 use the 'unicode' member of the event keysym. | |
| 506 | |
| 507 0.9.12: | |
| 508 There is partial support for 64-bit datatypes. I don't recommend | |
| 509 you use this if you have a choice, because 64-bit datatypes are not | |
| 510 supported on many platforms. On platforms for which it is supported, | |
| 511 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and | |
| 512 you can use the Uint64 and Sint64 datatypes. | |
| 513 | |
| 514 Added functions to SDL_endian.h to support 64-bit datatypes: | |
| 515 SDL_SwapLE64(), SDL_SwapBE64(), | |
| 516 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64() | |
| 517 | |
| 518 A new member "len_ratio" has been added to the SDL_AudioCVT structure, | |
| 519 and allows you to determine either the original buffer length or the | |
| 520 converted buffer length, given the other. | |
| 521 | |
| 522 A new function SDL_FreeWAV() has been added to the API to free data | |
| 523 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since | |
| 524 the gcc compiled DLL uses a different heap than VC++ compiled apps. | |
| 525 | |
| 526 SDL now has initial support for international keyboards using the | |
| 527 Latin character set. | |
| 528 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD | |
| 529 compile-time variable, or you can set the environment variable | |
| 530 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire. | |
| 531 The valid values for these variables can be found in SDL_keyboard.c | |
| 532 | |
| 533 Full support for German and French keyboards under X11 is implemented. | |
| 534 | |
| 535 0.9.11: | |
| 536 The THREADED_EVENTS compile-time define has been replaced with the | |
| 537 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(), | |
| 538 SDL will create a separate thread to perform input event handling. | |
| 539 If this flag is passed to SDL_Init(), and the OS doesn't support | |
| 540 event handling in a separate thread, SDL_Init() will fail. | |
| 541 Be sure to add calls to SDL_Delay() in your main thread to allow | |
| 542 the OS to schedule your event thread, or it may starve, leading | |
| 543 to slow event delivery and/or dropped events. | |
| 544 Currently MacOS and Win32 do not support this flag, while BeOS | |
| 545 and Linux do support it. I recommend that your application only | |
| 546 use this flag if absolutely necessary. | |
| 547 | |
| 548 The SDL thread function passed to SDL_CreateThread() now returns a | |
| 549 status. This status can be retrieved by passing a non-NULL pointer | |
| 550 as the 'status' argument to SDL_WaitThread(). | |
| 551 | |
| 552 The volume parameter to SDL_MixAudio() has been increased in range | |
| 553 from (0-8) to (0-128) | |
| 554 | |
| 555 SDL now has a data source abstraction which can encompass a file, | |
| 556 an area of memory, or any custom object you can envision. It uses | |
| 557 these abstractions, SDL_RWops, in the endian read/write functions, | |
| 558 and the built-in WAV and BMP file loaders. This means you can load | |
| 559 WAV chunks from memory mapped files, compressed archives, network | |
| 560 pipes, or anything else that has a data read abstraction. | |
| 561 | |
| 562 There are three built-in data source abstractions: | |
| 563 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem() | |
| 564 along with a generic data source allocation function: | |
| 565 SDL_AllocRW() | |
| 566 These data sources can be used like stdio file pointers with the | |
| 567 following convenience functions: | |
| 568 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose() | |
| 569 These functions are defined in the new header file "SDL_rwops.h" | |
| 570 | |
| 571 The endian swapping functions have been turned into macros for speed | |
| 572 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines | |
| 573 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on | |
| 574 the endianness of the host system. | |
| 575 | |
| 576 The endian read/write functions now take an SDL_RWops pointer | |
| 577 instead of a stdio FILE pointer, to support the new data source | |
| 578 abstraction. | |
| 579 | |
| 580 The SDL_*LoadWAV() functions have been replaced with a single | |
| 581 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's | |
| 582 first parameter, and a flag whether or not to automatically | |
| 583 free it as the second parameter. SDL_LoadWAV() is a macro for | |
| 584 backward compatibility and convenience: | |
| 585 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...); | |
| 586 | |
| 587 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced | |
| 588 with a single function that takes a SDL_RWops pointer as it's | |
| 589 first parameter, and a flag whether or not to automatically | |
| 590 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP() | |
| 591 are macros for backward compatibility and convenience: | |
| 592 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...); | |
| 593 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...); | |
| 594 Note that these functions use SDL_RWseek() extensively, and should | |
| 595 not be used on pipes or other non-seekable data sources. | |
| 596 | |
| 597 0.9.10: | |
| 598 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been | |
| 599 extended to support multiple types of display drivers, as well as | |
| 600 safe access to the X11 display when THREADED_EVENTS is enabled. | |
| 601 The new structures are documented in the SDL_syswm.h header file. | |
| 602 | |
| 603 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard | |
| 604 should now work properly, as well as the "Windows" keys on US | |
| 605 keyboards. | |
| 606 | |
| 607 The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab | |
| 608 instead of trying to open each block device on the system. | |
| 609 The CD must be listed in /etc/fstab as using the iso9660 filesystem. | |
| 610 | |
| 611 On Linux, if you define THREADED_EVENTS at compile time, a separate | |
| 612 thread will be spawned to gather X events asynchronously from the | |
| 613 graphics updates. This hasn't been extensively tested, but it does | |
| 614 provide a means of handling keyboard and mouse input in a separate | |
| 615 thread from the graphics thread. (This is now enabled by default.) | |
| 616 | |
| 617 A special access function SDL_PeepEvents() allows you to manipulate | |
| 618 the event queue in a thread-safe manner, including peeking at events, | |
| 619 removing events of a specified type, and adding new events of arbitrary | |
| 620 type to the queue (use the new 'user' member of the SDL_Event type). | |
| 621 | |
| 622 If you use SDL_PeepEvents() to gather events, then the main graphics | |
| 623 thread needs to call SDL_PumpEvents() periodically to drive the event | |
| 624 loop and generate input events. This is not necessary if SDL has been | |
| 625 compiled with THREADED_EVENTS defined, but doesn't hurt. | |
| 626 | |
| 627 A new function SDL_ThreadID() returns the identifier associated with | |
| 628 the current thread. | |
| 629 | |
| 630 0.9.9: | |
| 631 The AUDIO_STEREO format flag has been replaced with a new 'channels' | |
| 632 member of the SDL_AudioSpec structure. The channels are 1 for mono | |
| 633 audio, and 2 for stereo audio. In the future more channels may be | |
| 634 supported for 3D surround sound. | |
| 635 | |
| 636 The SDL_MixAudio() function now takes an additional volume parameter, | |
| 637 which should be set to SDL_MIX_MAXVOLUME for compatibility with the | |
| 638 original function. | |
| 639 | |
| 640 The CD-ROM functions which take a 'cdrom' parameter can now be | |
| 641 passed NULL, and will act on the last successfully opened CD-ROM. | |
| 642 | |
| 643 0.9.8: | |
| 644 No changes, bugfixes only. | |
| 645 | |
| 646 0.9.7: | |
| 647 No changes, bugfixes only. | |
| 648 | |
| 649 0.9.6: | |
| 650 Added a fast rectangle fill function: SDL_FillRect() | |
| 651 | |
| 652 Addition of a useful function for getting info on the video hardware: | |
| 653 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 654 This function replaces SDL_GetDisplayFormat(). | |
| 655 | |
| 656 Initial support for double-buffering: | |
| 657 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode() | |
| 658 Update the screen with a new function: SDL_Flip() | |
| 659 | |
| 660 SDL_AllocSurface() takes two new flags: | |
| 661 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits | |
| 662 and if the hardware supports hardware acceleration of colorkey blits | |
| 663 between two surfaces in video memory, to place the surface in video | |
| 664 memory if possible, otherwise it will be placed in system memory. | |
| 665 SDL_SRCALPHA means that the surface will be used for alpha blits and | |
| 666 if the hardware supports hardware acceleration of alpha blits between | |
| 667 two surfaces in video memory, to place the surface in video memory | |
| 668 if possible, otherwise it will be placed in system memory. | |
| 669 SDL_HWSURFACE now means that the surface will be created with the | |
| 670 same format as the display surface, since having surfaces in video | |
| 671 memory is only useful for fast blitting to the screen, and you can't | |
| 672 blit surfaces with different surface formats in video memory. | |
| 673 | |
| 674 0.9.5: | |
| 675 You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume | |
| 676 that the icon consists of the entire image. | |
| 677 | |
| 678 SDL_LowerBlit() is back -- but don't use it on the display surface. | |
| 679 It is exactly the same as SDL_MiddleBlit(), but doesn't check for | |
| 680 thread safety. | |
| 681 | |
| 682 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take | |
| 683 a FILE pointer instead of a file name. | |
| 684 | |
| 685 Added CD-ROM audio control API: | |
| 686 SDL_CDNumDrives() | |
| 687 SDL_CDName() | |
| 688 SDL_CDOpen() | |
| 689 SDL_CDStatus() | |
| 690 SDL_CDPlayTracks() | |
| 691 SDL_CDPlay() | |
| 692 SDL_CDPause() | |
| 693 SDL_CDResume() | |
| 694 SDL_CDStop() | |
| 695 SDL_CDEject() | |
| 696 SDL_CDClose() | |
| 697 | |
| 698 0.9.4: | |
| 699 No changes, bugfixes only. | |
| 700 | |
| 701 0.9.3: | |
| 702 Mouse motion event now includes relative motion information: | |
| 703 Sint16 event->motion.xrel, Sint16 event->motion.yrel | |
| 704 | |
| 705 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT | |
| 706 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile) | |
| 707 | |
| 708 0.9.2: | |
| 709 No changes, bugfixes only. | |
| 710 | |
| 711 0.9.1: | |
| 712 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now | |
| 713 automatically mapped on blit. | |
| 714 | |
| 715 0.8.0: | |
| 716 SDL stable release |