Mercurial > sdl-ios-xcode
annotate WhatsNew @ 478:f8482d7c9595
Date: Tue, 27 Aug 2002 19:07:38 +0200
From: Denis Oliver Kropp
Subject: YUV support
I just added YUV overlay support to the DirectFB backend.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 31 Aug 2002 04:13:28 +0000 |
| parents | 24edec3cafe4 |
| children | 12a21d82a060 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 This is a list of API changes in SDL's version history. | |
| 3 | |
| 4 Version 1.0: | |
| 5 | |
|
451
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
296
diff
changeset
|
6 1.2.5: |
|
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
296
diff
changeset
|
7 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5) |
|
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
296
diff
changeset
|
8 |
|
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
296
diff
changeset
|
9 Added SDL_GL_STEREO for stereoscopic OpenGL contexts |
|
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
296
diff
changeset
|
10 |
| 0 | 11 1.2.0: |
| 12 Added SDL_VIDEOEXPOSE event to signal that the screen needs to | |
| 13 be redrawn. This is currently only delivered to OpenGL windows | |
| 14 on X11, though it may be delivered in the future when the video | |
| 15 memory is lost under DirectX. | |
| 16 | |
| 17 1.1.8: | |
| 18 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window | |
| 19 that has no title bar or frame decoration. Fullscreen video | |
| 20 modes automatically have this flag set. | |
| 21 | |
| 22 Added a function to query the clipping rectangle for a surface: | |
| 23 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect) | |
| 24 | |
| 25 Added a function to query the current event filter: | |
| 26 SDL_EventFilter SDL_GetEventFilter(void) | |
| 27 | |
| 28 If you pass -1 to SDL_ShowCursor(), it won't change the current | |
| 29 cursor visibility state, but will still return it. | |
| 30 | |
| 31 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning | |
| 32 you can nest them as deep as you want, as long as each lock call | |
| 33 has a matching unlock call. The surface remains locked until the | |
| 34 last matching unlock call. | |
| 35 | |
| 36 Note that you may not blit to or from a locked surface. | |
| 37 | |
| 38 1.1.7: | |
| 39 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take | |
| 40 arrays of Uint16 values instead of Uint8 values. For the most part, | |
| 41 you can just take your old values and shift them up 8 bits to get | |
| 42 new correct values for your gamma ramps. | |
| 43 | |
| 44 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface() | |
| 45 and SDL will try to RLE accelerate colorkey and alpha blits in the | |
| 46 resulting surface. | |
| 47 | |
| 48 1.1.6: | |
| 49 Added a function to return the thread ID of a specific thread: | |
| 50 Uint32 SDL_GetThreadID(SDL_Thread *thread) | |
| 51 If 'thread' is NULL, this function returns the id for this thread. | |
| 52 | |
| 53 1.1.5: | |
| 54 The YUV overlay structure has been changed to use an array of | |
| 55 pitches and pixels representing the planes of a YUV image, to | |
| 56 better enable hardware acceleration. The YV12 and IYUV formats | |
| 57 each have three planes, corresponding to the Y, U, and V portions | |
| 58 of the image, while packed pixel YUV formats just have one plane. | |
| 59 | |
| 60 For palettized mode (8bpp), the screen colormap is now split in | |
| 61 a physical and a logical palette. The physical palette determines | |
| 62 what colours the screen pixels will get when displayed, and the | |
| 63 logical palette controls the mapping from blits to/from the screen. | |
| 64 A new function, SDL_SetPalette() has been added to change | |
| 65 logical and physical palettes separately. SDL_SetColors() works | |
| 66 just as before, and is equivalent to calling SDL_SetPalette() with | |
| 67 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL). | |
| 68 | |
| 69 SDL_BlitSurface() no longer modifies the source rectangle, only the | |
| 70 destination rectangle. The width/height members of the destination | |
| 71 rectangle are ignored, only the position is used. | |
| 72 | |
| 73 The old source clipping function SDL_SetClipping() has been replaced | |
| 74 with a more useful function to set the destination clipping rectangle: | |
| 75 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect) | |
| 76 | |
| 77 Added a function to see what subsystems have been initialized: | |
| 78 Uint32 SDL_WasInit(Uint32 flags) | |
| 79 | |
| 80 The Big Alpha Flip: SDL now treats alpha as opacity like everybody | |
| 81 else, and not as transparency: | |
| 82 | |
| 83 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255 | |
| 84 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0 | |
| 85 Values between 0 and 255 vary from fully transparent to fully opaque. | |
| 86 | |
| 87 New functions: | |
| 88 SDL_DisplayFormatAlpha() | |
| 89 Returns a surface converted to a format with alpha-channel | |
| 90 that can be blit efficiently to the screen. (In other words, | |
| 91 like SDL_DisplayFormat() but the resulting surface has | |
| 92 an alpha channel.) This is useful for surfaces with alpha. | |
| 93 SDL_MapRGBA() | |
| 94 Works as SDL_MapRGB() but takes an additional alpha parameter. | |
| 95 SDL_GetRGBA() | |
| 96 Works as SDL_GetRGB() but also returns the alpha value | |
| 97 (SDL_ALPHA_OPAQUE for formats without an alpha channel) | |
| 98 | |
| 99 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in | |
| 100 the [0..255] interval. Previously, SDL_GetRGB() would return | |
| 101 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format. | |
| 102 (N.B.: This is broken for bit fields < 3 bits.) | |
| 103 | |
| 104 SDL_MapRGB() returns pixels in which the alpha channel is set opaque. | |
| 105 | |
| 106 SDL_SetAlpha() can now be used for both setting the per-surface | |
| 107 alpha, using the new way of thinking of alpha, and also to enable | |
| 108 and disable per-pixel alpha blending for surfaces with an alpha | |
| 109 channel: | |
| 110 To disable alpha blending: | |
| 111 SDL_SetAlpha(surface, 0, 0); | |
| 112 To re-enable alpha blending: | |
| 113 SDL_SetAlpha(surface, SDL_SRCALPHA, 0); | |
| 114 Surfaces with an alpha channel have blending enabled by default. | |
| 115 | |
| 116 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests | |
| 117 RLE acceleration of blits, just as like with SDL_SetColorKey(). | |
| 118 This flag can be set for both surfaces with an alpha channel | |
| 119 and surfaces with an alpha value set by SDL_SetAlpha(). | |
| 120 As always, RLE surfaces must be locked before pixel access is | |
| 121 allowed, and unlocked before any other SDL operations are done | |
| 122 on it. | |
| 123 | |
| 124 The blit semantics for surfaces with and without alpha and colorkey | |
| 125 have now been defined: | |
| 126 | |
| 127 RGBA->RGB: | |
| 128 SDL_SRCALPHA set: | |
| 129 alpha-blend (using alpha-channel). | |
| 130 SDL_SRCCOLORKEY ignored. | |
| 131 SDL_SRCALPHA not set: | |
| 132 copy RGB. | |
| 133 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 134 RGB values of the source colour key, ignoring alpha in the | |
| 135 comparison. | |
| 136 | |
| 137 RGB->RGBA: | |
| 138 SDL_SRCALPHA set: | |
| 139 alpha-blend (using the source per-surface alpha value); | |
| 140 set destination alpha to opaque. | |
| 141 SDL_SRCALPHA not set: | |
| 142 copy RGB, set destination alpha to opaque. | |
| 143 both: | |
| 144 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 145 source colour key. | |
| 146 | |
| 147 RGBA->RGBA: | |
| 148 SDL_SRCALPHA set: | |
| 149 alpha-blend (using the source alpha channel) the RGB values; | |
| 150 leave destination alpha untouched. [Note: is this correct?] | |
| 151 SDL_SRCCOLORKEY ignored. | |
| 152 SDL_SRCALPHA not set: | |
| 153 copy all of RGBA to the destination. | |
| 154 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 155 RGB values of the source colour key, ignoring alpha in the | |
| 156 comparison. | |
| 157 | |
| 158 RGB->RGB: | |
| 159 SDL_SRCALPHA set: | |
| 160 alpha-blend (using the source per-surface alpha value). | |
| 161 SDL_SRCALPHA not set: | |
| 162 copy RGB. | |
| 163 both: | |
| 164 if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 165 source colour key. | |
| 166 | |
| 167 As a special case, blits from surfaces with per-surface alpha | |
| 168 value of 128 (50% transparency) are optimised and much faster | |
| 169 than other alpha values. This does not apply to surfaces with | |
| 170 alpha channels (per-pixel alpha). | |
| 171 | |
| 172 New functions for manipulating the gamma of the display have | |
| 173 been added: | |
| 174 int SDL_SetGamma(float red, float green, float blue); | |
| 175 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); | |
| 176 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); | |
| 177 Gamma ramps are tables with 256 entries which map the screen color | |
| 178 components into actually displayed colors. For an example of | |
| 179 implementing gamma correction and gamma fades, see test/testgamma.c | |
| 180 Gamma control is not supported on all hardware. | |
| 181 | |
| 182 1.1.4: | |
| 183 The size of the SDL_CDtrack structure changed from 8 to 12 bytes | |
| 184 as the size of the length member was extended to 32 bits. | |
| 185 | |
| 186 You can now use SDL for 2D blitting with a GL mode by passing the | |
| 187 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or | |
| 188 32 bpp, and the data in the framebuffer is put into the GL scene | |
| 189 when you call SDL_UpdateRects(), and the scene will be visible | |
| 190 when you call SDL_GL_SwapBuffers(). | |
| 191 | |
| 192 Run the "testgl" test program with the -logo command line option | |
| 193 to see an example of this blending of 2D and 3D in SDL. | |
| 194 | |
| 195 1.1.3: | |
| 196 Added SDL_FreeRW() to the API, to complement SDL_AllocRW() | |
| 197 | |
| 198 Added resizable window support - just add SDL_RESIZABLE to the | |
| 199 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events. | |
| 200 See SDL_events.h for details on the new SDL_ResizeEvent structure. | |
| 201 | |
| 202 Added condition variable support, based on mutexes and semaphores. | |
| 203 SDL_CreateCond() | |
| 204 SDL_DestroyCond() | |
| 205 SDL_CondSignal() | |
| 206 SDL_CondBroadcast() | |
| 207 SDL_CondWait() | |
| 208 SDL_CondTimedWait() | |
| 209 The new function prototypes are in SDL_mutex.h | |
| 210 | |
| 211 Added counting semaphore support, based on the mutex primitive. | |
| 212 SDL_CreateSemaphore() | |
| 213 SDL_DestroySemaphore() | |
| 214 SDL_SemWait() | |
| 215 SDL_SemTryWait() | |
| 216 SDL_SemWaitTimeout() | |
| 217 SDL_SemPost() | |
| 218 SDL_SemValue() | |
| 219 The new function prototypes are in SDL_mutex.h | |
| 220 | |
| 221 Added support for asynchronous blitting. To take advantage of this, | |
| 222 you must set the SDL_ASYNCBLIT flag when setting the video mode and | |
| 223 creating surfaces that you want accelerated in this way. You must | |
| 224 lock surfaces that have this flag set, and the lock will block until | |
| 225 any queued blits have completed. | |
| 226 | |
| 227 Added YUV video overlay support. | |
| 228 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU. | |
| 229 This function creates an overlay surface: | |
| 230 SDL_CreateYUVOverlay() | |
| 231 You must lock and unlock the overlay to get access to the data: | |
| 232 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay() | |
| 233 You can then display the overlay: | |
| 234 SDL_DisplayYUVOverlay() | |
| 235 You must free the overlay when you are done using it: | |
| 236 SDL_FreeYUVOverlay() | |
| 237 See SDL_video.h for the full function prototypes. | |
| 238 | |
| 239 The joystick hat position constants have been changed: | |
| 240 Old constant New constant | |
| 241 ------------ ------------ | |
| 242 0 SDL_HAT_CENTERED | |
| 243 1 SDL_HAT_UP | |
| 244 2 SDL_HAT_RIGHTUP | |
| 245 3 SDL_HAT_RIGHT | |
| 246 4 SDL_HAT_RIGHTDOWN | |
| 247 5 SDL_HAT_DOWN | |
| 248 6 SDL_HAT_LEFTDOWN | |
| 249 7 SDL_HAT_LEFT | |
| 250 8 SDL_HAT_LEFTUP | |
| 251 The new constants are bitmasks, so you can check for the | |
| 252 individual axes like this: | |
| 253 if ( hat_position & SDL_HAT_UP ) { | |
| 254 } | |
| 255 and you'll catch left-up, up, and right-up. | |
| 256 | |
| 257 1.1.2: | |
| 258 Added multiple timer support: | |
| 259 SDL_AddTimer() and SDL_RemoveTimer() | |
| 260 | |
| 261 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL. | |
| 262 | |
| 263 1.1.0: | |
| 264 Added initial OpenGL support. | |
| 265 First set GL attributes (such as RGB depth, alpha depth, etc.) | |
| 266 SDL_GL_SetAttribute() | |
| 267 Then call SDL_SetVideoMode() with the SDL_OPENGL flag. | |
| 268 Perform all of your normal GL drawing. | |
| 269 Finally swap the buffers with the new SDL function: | |
| 270 SDL_GL_SwapBuffers() | |
| 271 See the new 'testgl' test program for an example of using GL with SDL. | |
| 272 | |
| 273 You can load GL extension functions by using the function: | |
| 274 SDL_GL_LoadProcAddress() | |
| 275 | |
| 276 Added functions to initialize and cleanup specific SDL subsystems: | |
| 277 SDL_InitSubSystem() and SDL_QuitSubSystem() | |
| 278 | |
| 279 Added user-defined event type: | |
| 280 typedef struct { | |
| 281 Uint8 type; | |
| 282 int code; | |
| 283 void *data1; | |
| 284 void *data2; | |
| 285 } SDL_UserEvent; | |
| 286 This structure is in the "user" member of an SDL_Event. | |
| 287 | |
| 288 Added a function to push events into the event queue: | |
| 289 SDL_PushEvent() | |
| 290 | |
| 291 Example of using the new SDL user-defined events: | |
| 292 { | |
| 293 SDL_Event event; | |
| 294 | |
| 295 event.type = SDL_USEREVENT; | |
| 296 event.user.code = my_event_code; | |
| 297 event.user.data1 = significant_data; | |
| 298 event.user.data2 = 0; | |
| 299 SDL_PushEvent(&event); | |
| 300 } | |
| 301 | |
| 302 Added a function to get mouse deltas since last query: | |
| 303 SDL_GetRelativeMouseState() | |
| 304 | |
| 305 Added a boolean datatype to SDL_types.h: | |
| 306 SDL_bool = { SDL_TRUE, SDL_FALSE } | |
| 307 | |
| 308 Added a function to get the current audio status: | |
| 309 SDL_GetAudioState(); | |
| 310 It returns one of: | |
| 311 SDL_AUDIO_STOPPED, | |
| 312 SDL_AUDIO_PLAYING, | |
| 313 SDL_AUDIO_PAUSED | |
| 314 | |
| 315 Added an AAlib driver (ASCII Art) - by Stephane Peter. | |
| 316 | |
| 317 1.0.6: | |
| 318 The input grab state is reset after each call to SDL_SetVideoMode(). | |
| 319 The input is grabbed by default in fullscreen mode, and ungrabbed in | |
| 320 windowed mode. If you want to set input grab to a particular value, | |
| 321 you should set it after each call to SDL_SetVideoMode(). | |
| 322 | |
| 323 1.0.5: | |
| 324 Exposed SDL_AudioInit(), SDL_VideoInit() | |
| 325 Added SDL_AudioDriverName() and SDL_VideoDriverName() | |
| 326 | |
| 327 Added new window manager function: | |
| 328 SDL_WM_ToggleFullScreen() | |
| 329 This is currently implemented only on Linux | |
| 330 | |
| 331 The ALT-ENTER code has been removed - it's not appropriate for a | |
| 332 lib to bind keys when they aren't even emergency escape sequences. | |
| 333 | |
| 334 ALT-ENTER functionality can be implemented with the following code: | |
| 335 | |
| 336 int Handle_AltEnter(const SDL_Event *event) | |
| 337 { | |
| 338 if ( event->type == SDL_KEYDOWN ) { | |
| 339 if ( (event->key.keysym.sym == SDLK_RETURN) && | |
| 340 (event->key.keysym.mod & KMOD_ALT) ) { | |
| 341 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); | |
| 342 return(0); | |
| 343 } | |
| 344 } | |
| 345 return(1); | |
| 346 } | |
| 347 SDL_SetEventFilter(Handle_AltEnter); | |
| 348 | |
| 349 1.0.3: | |
| 350 Under X11, if you grab the input and hide the mouse cursor, | |
| 351 the mouse will go into a "relative motion" mode where you | |
| 352 will always get relative motion events no matter how far in | |
| 353 each direction you move the mouse - relative motion is not | |
| 354 bounded by the edges of the window (though the absolute values | |
| 355 of the mouse positions are clamped by the size of the window). | |
| 356 The SVGAlib, framebuffer console, and DirectInput drivers all | |
| 357 have this behavior naturally, and the GDI and BWindow drivers | |
| 358 never go into "relative motion" mode. | |
| 359 | |
| 360 1.0.2: | |
| 361 Added a function to enable keyboard repeat: | |
| 362 SDL_EnableKeyRepeat() | |
| 363 | |
| 364 Added a function to grab the mouse and keyboard input | |
| 365 SDL_WM_GrabInput() | |
| 366 | |
| 367 Added a function to iconify the window. | |
| 368 SDL_WM_IconifyWindow() | |
| 369 If this function succeeds, the application will receive an event | |
| 370 signaling SDL_APPACTIVE event | |
| 371 | |
| 372 1.0.1: | |
| 373 Added constants to SDL_audio.h for 16-bit native byte ordering: | |
| 374 AUDIO_U16SYS, AUDIO_S16SYS | |
| 375 | |
| 376 1.0.0: | |
| 377 New public release | |
| 378 | |
| 379 Version 0.11: | |
| 380 | |
| 381 0.11.5: | |
| 382 A new function SDL_GetVideoSurface() has been added, and returns | |
| 383 a pointer to the current display surface. | |
| 384 | |
| 385 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and | |
| 386 a new function SDL_CreateRGBSurfaceFrom() has been added to allow | |
| 387 creating an SDL surface from an existing pixel data buffer. | |
| 388 | |
| 389 Added SDL_GetRGB() to the headers and documentation. | |
| 390 | |
| 391 0.11.4: | |
| 392 SDL_SetLibraryPath() is no longer meaningful, and has been removed. | |
| 393 | |
| 394 0.11.3: | |
| 395 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from | |
| 396 installing fatal signal handlers on operating systems that support | |
| 397 them. | |
| 398 | |
| 399 Version 0.9: | |
| 400 | |
| 401 0.9.15: | |
| 402 SDL_CreateColorCursor() has been removed. Color cursors should | |
| 403 be implemented as sprites, blitted by the application when the | |
| 404 cursor moves. To get smooth color cursor updates when the app | |
| 405 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This | |
| 406 allows you to handle the mouse motion in another thread from an | |
| 407 event filter function, but is currently only supported by Linux | |
| 408 and BeOS. Note that you'll have to protect the display surface | |
| 409 from multi-threaded access by using mutexes if you do this. | |
| 410 | |
| 411 Thread-safe surface support has been removed from SDL. | |
| 412 This makes blitting somewhat faster, by removing SDL_MiddleBlit(). | |
| 413 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead. | |
| 414 You can make your surfaces thread-safe by allocating your own | |
| 415 mutex and making lock/unlock calls around accesses to your surface. | |
| 416 | |
| 417 0.9.14: | |
| 418 SDL_GetMouseState() now takes pointers to int rather than Uint16. | |
| 419 | |
| 420 If you set the SDL_WINDOWID environment variable under UNIX X11, | |
| 421 SDL will use that as the main window instead of creating it's own. | |
| 422 This is an unsupported extension to SDL, and not portable at all. | |
| 423 | |
| 424 0.9.13: | |
| 425 Added a function SDL_SetLibraryPath() which can be used to specify | |
| 426 the directory containing the SDL dynamic libraries. This is useful | |
| 427 for commercial applications which ship with particular versions | |
| 428 of the libraries, and for security on multi-user systems. | |
| 429 If this function is not used, the default system directories are | |
| 430 searched using the native dynamic object loading mechanism. | |
| 431 | |
| 432 In order to support C linkage under Visual C++, you must declare | |
| 433 main() without any return type: | |
| 434 main(int argc, char *argv[]) { | |
| 435 /* Do the program... */ | |
| 436 return(0); | |
| 437 } | |
| 438 C++ programs should also return a value if compiled under VC++. | |
| 439 | |
| 440 The blit_endian member of the SDL_VideoInfo struct has been removed. | |
| 441 | |
| 442 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there | |
| 443 is now no longer any function to translate a keysym to a character. | |
| 444 | |
| 445 The SDL_keysym structure has been extended with a 'scancode' and | |
| 446 'unicode' member. The 'scancode' is a hardware specific scancode | |
| 447 for the key that was pressed, and may be 0. The 'unicode' member | |
| 448 is a 16-bit UNICODE translation of the key that was pressed along | |
| 449 with any modifiers or compose keys that have been pressed. | |
| 450 If no UNICODE translation exists for the key, 'unicode' will be 0. | |
| 451 | |
| 452 Added a function SDL_EnableUNICODE() to enable/disable UNICODE | |
| 453 translation of character keypresses. Translation defaults off. | |
| 454 | |
| 455 To convert existing code to use the new API, change code which | |
| 456 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(), | |
| 457 and change code which uses it to get the ASCII value of a sym to | |
| 458 use the 'unicode' member of the event keysym. | |
| 459 | |
| 460 0.9.12: | |
| 461 There is partial support for 64-bit datatypes. I don't recommend | |
| 462 you use this if you have a choice, because 64-bit datatypes are not | |
| 463 supported on many platforms. On platforms for which it is supported, | |
| 464 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and | |
| 465 you can use the Uint64 and Sint64 datatypes. | |
| 466 | |
| 467 Added functions to SDL_endian.h to support 64-bit datatypes: | |
| 468 SDL_SwapLE64(), SDL_SwapBE64(), | |
| 469 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64() | |
| 470 | |
| 471 A new member "len_ratio" has been added to the SDL_AudioCVT structure, | |
| 472 and allows you to determine either the original buffer length or the | |
| 473 converted buffer length, given the other. | |
| 474 | |
| 475 A new function SDL_FreeWAV() has been added to the API to free data | |
| 476 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since | |
| 477 the gcc compiled DLL uses a different heap than VC++ compiled apps. | |
| 478 | |
| 479 SDL now has initial support for international keyboards using the | |
| 480 Latin character set. | |
| 481 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD | |
| 482 compile-time variable, or you can set the environment variable | |
| 483 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire. | |
| 484 The valid values for these variables can be found in SDL_keyboard.c | |
| 485 | |
| 486 Full support for German and French keyboards under X11 is implemented. | |
| 487 | |
| 488 0.9.11: | |
| 489 The THREADED_EVENTS compile-time define has been replaced with the | |
| 490 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(), | |
| 491 SDL will create a separate thread to perform input event handling. | |
| 492 If this flag is passed to SDL_Init(), and the OS doesn't support | |
| 493 event handling in a separate thread, SDL_Init() will fail. | |
| 494 Be sure to add calls to SDL_Delay() in your main thread to allow | |
| 495 the OS to schedule your event thread, or it may starve, leading | |
| 496 to slow event delivery and/or dropped events. | |
| 497 Currently MacOS and Win32 do not support this flag, while BeOS | |
| 498 and Linux do support it. I recommend that your application only | |
| 499 use this flag if absolutely necessary. | |
| 500 | |
| 501 The SDL thread function passed to SDL_CreateThread() now returns a | |
| 502 status. This status can be retrieved by passing a non-NULL pointer | |
| 503 as the 'status' argument to SDL_WaitThread(). | |
| 504 | |
| 505 The volume parameter to SDL_MixAudio() has been increased in range | |
| 506 from (0-8) to (0-128) | |
| 507 | |
| 508 SDL now has a data source abstraction which can encompass a file, | |
| 509 an area of memory, or any custom object you can envision. It uses | |
| 510 these abstractions, SDL_RWops, in the endian read/write functions, | |
| 511 and the built-in WAV and BMP file loaders. This means you can load | |
| 512 WAV chunks from memory mapped files, compressed archives, network | |
| 513 pipes, or anything else that has a data read abstraction. | |
| 514 | |
| 515 There are three built-in data source abstractions: | |
| 516 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem() | |
| 517 along with a generic data source allocation function: | |
| 518 SDL_AllocRW() | |
| 519 These data sources can be used like stdio file pointers with the | |
| 520 following convenience functions: | |
| 521 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose() | |
| 522 These functions are defined in the new header file "SDL_rwops.h" | |
| 523 | |
| 524 The endian swapping functions have been turned into macros for speed | |
| 525 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines | |
| 526 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on | |
| 527 the endianness of the host system. | |
| 528 | |
| 529 The endian read/write functions now take an SDL_RWops pointer | |
| 530 instead of a stdio FILE pointer, to support the new data source | |
| 531 abstraction. | |
| 532 | |
| 533 The SDL_*LoadWAV() functions have been replaced with a single | |
| 534 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's | |
| 535 first parameter, and a flag whether or not to automatically | |
| 536 free it as the second parameter. SDL_LoadWAV() is a macro for | |
| 537 backward compatibility and convenience: | |
| 538 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...); | |
| 539 | |
| 540 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced | |
| 541 with a single function that takes a SDL_RWops pointer as it's | |
| 542 first parameter, and a flag whether or not to automatically | |
| 543 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP() | |
| 544 are macros for backward compatibility and convenience: | |
| 545 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...); | |
| 546 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...); | |
| 547 Note that these functions use SDL_RWseek() extensively, and should | |
| 548 not be used on pipes or other non-seekable data sources. | |
| 549 | |
| 550 0.9.10: | |
| 551 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been | |
| 552 extended to support multiple types of display drivers, as well as | |
| 553 safe access to the X11 display when THREADED_EVENTS is enabled. | |
| 554 The new structures are documented in the SDL_syswm.h header file. | |
| 555 | |
| 556 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard | |
| 557 should now work properly, as well as the "Windows" keys on US | |
| 558 keyboards. | |
| 559 | |
| 560 The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab | |
| 561 instead of trying to open each block device on the system. | |
| 562 The CD must be listed in /etc/fstab as using the iso9660 filesystem. | |
| 563 | |
| 564 On Linux, if you define THREADED_EVENTS at compile time, a separate | |
| 565 thread will be spawned to gather X events asynchronously from the | |
| 566 graphics updates. This hasn't been extensively tested, but it does | |
| 567 provide a means of handling keyboard and mouse input in a separate | |
| 568 thread from the graphics thread. (This is now enabled by default.) | |
| 569 | |
| 570 A special access function SDL_PeepEvents() allows you to manipulate | |
| 571 the event queue in a thread-safe manner, including peeking at events, | |
| 572 removing events of a specified type, and adding new events of arbitrary | |
| 573 type to the queue (use the new 'user' member of the SDL_Event type). | |
| 574 | |
| 575 If you use SDL_PeepEvents() to gather events, then the main graphics | |
| 576 thread needs to call SDL_PumpEvents() periodically to drive the event | |
| 577 loop and generate input events. This is not necessary if SDL has been | |
| 578 compiled with THREADED_EVENTS defined, but doesn't hurt. | |
| 579 | |
| 580 A new function SDL_ThreadID() returns the identifier associated with | |
| 581 the current thread. | |
| 582 | |
| 583 0.9.9: | |
| 584 The AUDIO_STEREO format flag has been replaced with a new 'channels' | |
| 585 member of the SDL_AudioSpec structure. The channels are 1 for mono | |
| 586 audio, and 2 for stereo audio. In the future more channels may be | |
| 587 supported for 3D surround sound. | |
| 588 | |
| 589 The SDL_MixAudio() function now takes an additional volume parameter, | |
| 590 which should be set to SDL_MIX_MAXVOLUME for compatibility with the | |
| 591 original function. | |
| 592 | |
| 593 The CD-ROM functions which take a 'cdrom' parameter can now be | |
| 594 passed NULL, and will act on the last successfully opened CD-ROM. | |
| 595 | |
| 596 0.9.8: | |
| 597 No changes, bugfixes only. | |
| 598 | |
| 599 0.9.7: | |
| 600 No changes, bugfixes only. | |
| 601 | |
| 602 0.9.6: | |
| 603 Added a fast rectangle fill function: SDL_FillRect() | |
| 604 | |
| 605 Addition of a useful function for getting info on the video hardware: | |
| 606 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 607 This function replaces SDL_GetDisplayFormat(). | |
| 608 | |
| 609 Initial support for double-buffering: | |
| 610 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode() | |
| 611 Update the screen with a new function: SDL_Flip() | |
| 612 | |
| 613 SDL_AllocSurface() takes two new flags: | |
| 614 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits | |
| 615 and if the hardware supports hardware acceleration of colorkey blits | |
| 616 between two surfaces in video memory, to place the surface in video | |
| 617 memory if possible, otherwise it will be placed in system memory. | |
| 618 SDL_SRCALPHA means that the surface will be used for alpha blits and | |
| 619 if the hardware supports hardware acceleration of alpha blits between | |
| 620 two surfaces in video memory, to place the surface in video memory | |
| 621 if possible, otherwise it will be placed in system memory. | |
| 622 SDL_HWSURFACE now means that the surface will be created with the | |
| 623 same format as the display surface, since having surfaces in video | |
| 624 memory is only useful for fast blitting to the screen, and you can't | |
| 625 blit surfaces with different surface formats in video memory. | |
| 626 | |
| 627 0.9.5: | |
| 628 You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume | |
| 629 that the icon consists of the entire image. | |
| 630 | |
| 631 SDL_LowerBlit() is back -- but don't use it on the display surface. | |
| 632 It is exactly the same as SDL_MiddleBlit(), but doesn't check for | |
| 633 thread safety. | |
| 634 | |
| 635 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take | |
| 636 a FILE pointer instead of a file name. | |
| 637 | |
| 638 Added CD-ROM audio control API: | |
| 639 SDL_CDNumDrives() | |
| 640 SDL_CDName() | |
| 641 SDL_CDOpen() | |
| 642 SDL_CDStatus() | |
| 643 SDL_CDPlayTracks() | |
| 644 SDL_CDPlay() | |
| 645 SDL_CDPause() | |
| 646 SDL_CDResume() | |
| 647 SDL_CDStop() | |
| 648 SDL_CDEject() | |
| 649 SDL_CDClose() | |
| 650 | |
| 651 0.9.4: | |
| 652 No changes, bugfixes only. | |
| 653 | |
| 654 0.9.3: | |
| 655 Mouse motion event now includes relative motion information: | |
| 656 Sint16 event->motion.xrel, Sint16 event->motion.yrel | |
| 657 | |
| 658 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT | |
| 659 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile) | |
| 660 | |
| 661 0.9.2: | |
| 662 No changes, bugfixes only. | |
| 663 | |
| 664 0.9.1: | |
| 665 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now | |
| 666 automatically mapped on blit. | |
| 667 | |
| 668 0.8.0: | |
| 669 SDL stable release |