1 2This is a list of API changes in SDL's version history. 3 4Version 1.0: 5 61.2.14: 7 Added cast macros for correct usage with C++: 8 SDL_reinterpret_cast(type, expression) 9 SDL_static_cast(type, expression) 10 11 Added SDL_VIDEO_FULLSCREEN_DISPLAY as a preferred synonym for 12 SDL_VIDEO_FULLSCREEN_HEAD on X11. 13 14 Added SDL_DISABLE_LOCK_KEYS environment variable to enable normal 15 up/down events for Caps-Lock and Num-Lock keys. 16 171.2.13: 18 Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants. 19 201.2.12: 21 Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling 22 of the screensaver on Mac OS X and X11. 23 241.2.10: 25 If SDL_OpenAudio() is passed zero for the desired format 26 fields, the following environment variables will be used 27 to fill them in: 28 SDL_AUDIO_FREQUENCY 29 SDL_AUDIO_FORMAT 30 SDL_AUDIO_CHANNELS 31 SDL_AUDIO_SAMPLES 32 If an environment variable is not specified, it will be set 33 to a reasonable default value. 34 35 Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment 36 variable, currently supported on X11 Xinerama configurations. 37 38 Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications. 39 40 Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration. 41 42 Added current_w and current_h to the SDL_VideoInfo structure, 43 which is set to the desktop resolution during video intialization, 44 and then set to the current resolution when a video mode is set. 45 46 SDL_SetVideoMode() now accepts 0 for width or height and will use 47 the current video mode (or the desktop mode if no mode has been set.) 48 49 Added SDL_GetKeyRepeat() 50 51 Added SDL_config.h, with defaults for various build environments. 52 531.2.7: 54 Added CPU feature detection functions to SDL_cpuinfo.h: 55 SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(), 56 SDL_HasAltiVec() 57 Added function to create RWops from const memory: SDL_RWFromConstMem() 58 591.2.6: 60 Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() 61 62 Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA 63 641.2.5: 65 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5) 66 67 Added SDL_GL_STEREO for stereoscopic OpenGL contexts 68 691.2.0: 70 Added SDL_VIDEOEXPOSE event to signal that the screen needs to 71 be redrawn. This is currently only delivered to OpenGL windows 72 on X11, though it may be delivered in the future when the video 73 memory is lost under DirectX. 74 751.1.8: 76 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window 77 that has no title bar or frame decoration. Fullscreen video 78 modes automatically have this flag set. 79 80 Added a function to query the clipping rectangle for a surface: 81 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect) 82 83 Added a function to query the current event filter: 84 SDL_EventFilter SDL_GetEventFilter(void) 85 86 If you pass -1 to SDL_ShowCursor(), it won't change the current 87 cursor visibility state, but will still return it. 88 89 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning 90 you can nest them as deep as you want, as long as each lock call 91 has a matching unlock call. The surface remains locked until the 92 last matching unlock call. 93 94 Note that you may not blit to or from a locked surface. 95 961.1.7: 97 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take 98 arrays of Uint16 values instead of Uint8 values. For the most part, 99 you can just take your old values and shift them up 8 bits to get 100 new correct values for your gamma ramps. 101 102 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface() 103 and SDL will try to RLE accelerate colorkey and alpha blits in the 104 resulting surface. 105 1061.1.6: 107 Added a function to return the thread ID of a specific thread: 108 Uint32 SDL_GetThreadID(SDL_Thread *thread) 109 If 'thread' is NULL, this function returns the id for this thread. 110 1111.1.5: 112 The YUV overlay structure has been changed to use an array of 113 pitches and pixels representing the planes of a YUV image, to 114 better enable hardware acceleration. The YV12 and IYUV formats 115 each have three planes, corresponding to the Y, U, and V portions 116 of the image, while packed pixel YUV formats just have one plane. 117 118 For palettized mode (8bpp), the screen colormap is now split in 119 a physical and a logical palette. The physical palette determines 120 what colours the screen pixels will get when displayed, and the 121 logical palette controls the mapping from blits to/from the screen. 122 A new function, SDL_SetPalette() has been added to change 123 logical and physical palettes separately. SDL_SetColors() works 124 just as before, and is equivalent to calling SDL_SetPalette() with 125 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL). 126 127 SDL_BlitSurface() no longer modifies the source rectangle, only the 128 destination rectangle. The width/height members of the destination 129 rectangle are ignored, only the position is used. 130 131 The old source clipping function SDL_SetClipping() has been replaced 132 with a more useful function to set the destination clipping rectangle: 133 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect) 134 135 Added a function to see what subsystems have been initialized: 136 Uint32 SDL_WasInit(Uint32 flags) 137 138 The Big Alpha Flip: SDL now treats alpha as opacity like everybody 139 else, and not as transparency: 140 141 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255 142 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0 143 Values between 0 and 255 vary from fully transparent to fully opaque. 144 145 New functions: 146 SDL_DisplayFormatAlpha() 147 Returns a surface converted to a format with alpha-channel 148 that can be blit efficiently to the screen. (In other words, 149 like SDL_DisplayFormat() but the resulting surface has 150 an alpha channel.) This is useful for surfaces with alpha. 151 SDL_MapRGBA() 152 Works as SDL_MapRGB() but takes an additional alpha parameter. 153 SDL_GetRGBA() 154 Works as SDL_GetRGB() but also returns the alpha value 155 (SDL_ALPHA_OPAQUE for formats without an alpha channel) 156 157 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in 158 the [0..255] interval. Previously, SDL_GetRGB() would return 159 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format. 160 (N.B.: This is broken for bit fields < 3 bits.) 161 162 SDL_MapRGB() returns pixels in which the alpha channel is set opaque. 163 164 SDL_SetAlpha() can now be used for both setting the per-surface 165 alpha, using the new way of thinking of alpha, and also to enable 166 and disable per-pixel alpha blending for surfaces with an alpha 167 channel: 168 To disable alpha blending: 169 SDL_SetAlpha(surface, 0, 0); 170 To re-enable alpha blending: 171 SDL_SetAlpha(surface, SDL_SRCALPHA, 0); 172 Surfaces with an alpha channel have blending enabled by default. 173 174 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests 175 RLE acceleration of blits, just as like with SDL_SetColorKey(). 176 This flag can be set for both surfaces with an alpha channel 177 and surfaces with an alpha value set by SDL_SetAlpha(). 178 As always, RLE surfaces must be locked before pixel access is 179 allowed, and unlocked before any other SDL operations are done 180 on it. 181 182 The blit semantics for surfaces with and without alpha and colorkey 183 have now been defined: 184 185 RGBA->RGB: 186 SDL_SRCALPHA set: 187 alpha-blend (using alpha-channel). 188 SDL_SRCCOLORKEY ignored. 189 SDL_SRCALPHA not set: 190 copy RGB. 191 if SDL_SRCCOLORKEY set, only copy the pixels matching the 192 RGB values of the source colour key, ignoring alpha in the 193 comparison. 194 195 RGB->RGBA: 196 SDL_SRCALPHA set: 197 alpha-blend (using the source per-surface alpha value); 198 set destination alpha to opaque. 199 SDL_SRCALPHA not set: 200 copy RGB, set destination alpha to opaque. 201 both: 202 if SDL_SRCCOLORKEY set, only copy the pixels matching the 203 source colour key. 204 205 RGBA->RGBA: 206 SDL_SRCALPHA set: 207 alpha-blend (using the source alpha channel) the RGB values; 208 leave destination alpha untouched. [Note: is this correct?] 209 SDL_SRCCOLORKEY ignored. 210 SDL_SRCALPHA not set: 211 copy all of RGBA to the destination. 212 if SDL_SRCCOLORKEY set, only copy the pixels matching the 213 RGB values of the source colour key, ignoring alpha in the 214 comparison. 215 216 RGB->RGB: 217 SDL_SRCALPHA set: 218 alpha-blend (using the source per-surface alpha value). 219 SDL_SRCALPHA not set: 220 copy RGB. 221 both: 222 if SDL_SRCCOLORKEY set, only copy the pixels matching the 223 source colour key. 224 225 As a special case, blits from surfaces with per-surface alpha 226 value of 128 (50% transparency) are optimised and much faster 227 than other alpha values. This does not apply to surfaces with 228 alpha channels (per-pixel alpha). 229 230 New functions for manipulating the gamma of the display have 231 been added: 232 int SDL_SetGamma(float red, float green, float blue); 233 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); 234 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); 235 Gamma ramps are tables with 256 entries which map the screen color 236 components into actually displayed colors. For an example of 237 implementing gamma correction and gamma fades, see test/testgamma.c 238 Gamma control is not supported on all hardware. 239 2401.1.4: 241 The size of the SDL_CDtrack structure changed from 8 to 12 bytes 242 as the size of the length member was extended to 32 bits. 243 244 You can now use SDL for 2D blitting with a GL mode by passing the 245 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or 246 32 bpp, and the data in the framebuffer is put into the GL scene 247 when you call SDL_UpdateRects(), and the scene will be visible 248 when you call SDL_GL_SwapBuffers(). 249 250 Run the "testgl" test program with the -logo command line option 251 to see an example of this blending of 2D and 3D in SDL. 252 2531.1.3: 254 Added SDL_FreeRW() to the API, to complement SDL_AllocRW() 255 256 Added resizable window support - just add SDL_RESIZABLE to the 257 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events. 258 See SDL_events.h for details on the new SDL_ResizeEvent structure. 259 260 Added condition variable support, based on mutexes and semaphores. 261 SDL_CreateCond() 262 SDL_DestroyCond() 263 SDL_CondSignal() 264 SDL_CondBroadcast() 265 SDL_CondWait() 266 SDL_CondTimedWait() 267 The new function prototypes are in SDL_mutex.h 268 269 Added counting semaphore support, based on the mutex primitive. 270 SDL_CreateSemaphore() 271 SDL_DestroySemaphore() 272 SDL_SemWait() 273 SDL_SemTryWait() 274 SDL_SemWaitTimeout() 275 SDL_SemPost() 276 SDL_SemValue() 277 The new function prototypes are in SDL_mutex.h 278 279 Added support for asynchronous blitting. To take advantage of this, 280 you must set the SDL_ASYNCBLIT flag when setting the video mode and 281 creating surfaces that you want accelerated in this way. You must 282 lock surfaces that have this flag set, and the lock will block until 283 any queued blits have completed. 284 285 Added YUV video overlay support. 286 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU. 287 This function creates an overlay surface: 288 SDL_CreateYUVOverlay() 289 You must lock and unlock the overlay to get access to the data: 290 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay() 291 You can then display the overlay: 292 SDL_DisplayYUVOverlay() 293 You must free the overlay when you are done using it: 294 SDL_FreeYUVOverlay() 295 See SDL_video.h for the full function prototypes. 296 297 The joystick hat position constants have been changed: 298 Old constant New constant 299 ------------ ------------ 300 0 SDL_HAT_CENTERED 301 1 SDL_HAT_UP 302 2 SDL_HAT_RIGHTUP 303 3 SDL_HAT_RIGHT 304 4 SDL_HAT_RIGHTDOWN 305 5 SDL_HAT_DOWN 306 6 SDL_HAT_LEFTDOWN 307 7 SDL_HAT_LEFT 308 8 SDL_HAT_LEFTUP 309 The new constants are bitmasks, so you can check for the 310 individual axes like this: 311 if ( hat_position & SDL_HAT_UP ) { 312 } 313 and you'll catch left-up, up, and right-up. 314 3151.1.2: 316 Added multiple timer support: 317 SDL_AddTimer() and SDL_RemoveTimer() 318 319 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL. 320 3211.1.0: 322 Added initial OpenGL support. 323 First set GL attributes (such as RGB depth, alpha depth, etc.) 324 SDL_GL_SetAttribute() 325 Then call SDL_SetVideoMode() with the SDL_OPENGL flag. 326 Perform all of your normal GL drawing. 327 Finally swap the buffers with the new SDL function: 328 SDL_GL_SwapBuffers() 329 See the new 'testgl' test program for an example of using GL with SDL. 330 331 You can load GL extension functions by using the function: 332 SDL_GL_LoadProcAddress() 333 334 Added functions to initialize and cleanup specific SDL subsystems: 335 SDL_InitSubSystem() and SDL_QuitSubSystem() 336 337 Added user-defined event type: 338 typedef struct { 339 Uint8 type; 340 int code; 341 void *data1; 342 void *data2; 343 } SDL_UserEvent; 344 This structure is in the "user" member of an SDL_Event. 345 346 Added a function to push events into the event queue: 347 SDL_PushEvent() 348 349 Example of using the new SDL user-defined events: 350 { 351 SDL_Event event; 352 353 event.type = SDL_USEREVENT; 354 event.user.code = my_event_code; 355 event.user.data1 = significant_data; 356 event.user.data2 = 0; 357 SDL_PushEvent(&event); 358 } 359 360 Added a function to get mouse deltas since last query: 361 SDL_GetRelativeMouseState() 362 363 Added a boolean datatype to SDL_types.h: 364 SDL_bool = { SDL_TRUE, SDL_FALSE } 365 366 Added a function to get the current audio status: 367 SDL_GetAudioState(); 368 It returns one of: 369 SDL_AUDIO_STOPPED, 370 SDL_AUDIO_PLAYING, 371 SDL_AUDIO_PAUSED 372 373 Added an AAlib driver (ASCII Art) - by Stephane Peter. 374 3751.0.6: 376 The input grab state is reset after each call to SDL_SetVideoMode(). 377 The input is grabbed by default in fullscreen mode, and ungrabbed in 378 windowed mode. If you want to set input grab to a particular value, 379 you should set it after each call to SDL_SetVideoMode(). 380 3811.0.5: 382 Exposed SDL_AudioInit(), SDL_VideoInit() 383 Added SDL_AudioDriverName() and SDL_VideoDriverName() 384 385 Added new window manager function: 386 SDL_WM_ToggleFullScreen() 387 This is currently implemented only on Linux 388 389 The ALT-ENTER code has been removed - it's not appropriate for a 390 lib to bind keys when they aren't even emergency escape sequences. 391 392 ALT-ENTER functionality can be implemented with the following code: 393 394 int Handle_AltEnter(const SDL_Event *event) 395 { 396 if ( event->type == SDL_KEYDOWN ) { 397 if ( (event->key.keysym.sym == SDLK_RETURN) && 398 (event->key.keysym.mod & KMOD_ALT) ) { 399 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); 400 return(0); 401 } 402 } 403 return(1); 404 } 405 SDL_SetEventFilter(Handle_AltEnter); 406 4071.0.3: 408 Under X11, if you grab the input and hide the mouse cursor, 409 the mouse will go into a "relative motion" mode where you 410 will always get relative motion events no matter how far in 411 each direction you move the mouse - relative motion is not 412 bounded by the edges of the window (though the absolute values 413 of the mouse positions are clamped by the size of the window). 414 The SVGAlib, framebuffer console, and DirectInput drivers all 415 have this behavior naturally, and the GDI and BWindow drivers 416 never go into "relative motion" mode. 417 4181.0.2: 419 Added a function to enable keyboard repeat: 420 SDL_EnableKeyRepeat() 421 422 Added a function to grab the mouse and keyboard input 423 SDL_WM_GrabInput() 424 425 Added a function to iconify the window. 426 SDL_WM_IconifyWindow() 427 If this function succeeds, the application will receive an event 428 signaling SDL_APPACTIVE event 429 4301.0.1: 431 Added constants to SDL_audio.h for 16-bit native byte ordering: 432 AUDIO_U16SYS, AUDIO_S16SYS 433 4341.0.0: 435 New public release 436 437Version 0.11: 438 4390.11.5: 440 A new function SDL_GetVideoSurface() has been added, and returns 441 a pointer to the current display surface. 442 443 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and 444 a new function SDL_CreateRGBSurfaceFrom() has been added to allow 445 creating an SDL surface from an existing pixel data buffer. 446 447 Added SDL_GetRGB() to the headers and documentation. 448 4490.11.4: 450 SDL_SetLibraryPath() is no longer meaningful, and has been removed. 451 4520.11.3: 453 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from 454 installing fatal signal handlers on operating systems that support 455 them. 456 457Version 0.9: 458 4590.9.15: 460 SDL_CreateColorCursor() has been removed. Color cursors should 461 be implemented as sprites, blitted by the application when the 462 cursor moves. To get smooth color cursor updates when the app 463 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This 464 allows you to handle the mouse motion in another thread from an 465 event filter function, but is currently only supported by Linux 466 and BeOS. Note that you'll have to protect the display surface 467 from multi-threaded access by using mutexes if you do this. 468 469 Thread-safe surface support has been removed from SDL. 470 This makes blitting somewhat faster, by removing SDL_MiddleBlit(). 471 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead. 472 You can make your surfaces thread-safe by allocating your own 473 mutex and making lock/unlock calls around accesses to your surface. 474 4750.9.14: 476 SDL_GetMouseState() now takes pointers to int rather than Uint16. 477 478 If you set the SDL_WINDOWID environment variable under UNIX X11, 479 SDL will use that as the main window instead of creating it's own. 480 This is an unsupported extension to SDL, and not portable at all. 481 4820.9.13: 483 Added a function SDL_SetLibraryPath() which can be used to specify 484 the directory containing the SDL dynamic libraries. This is useful 485 for commercial applications which ship with particular versions 486 of the libraries, and for security on multi-user systems. 487 If this function is not used, the default system directories are 488 searched using the native dynamic object loading mechanism. 489 490 In order to support C linkage under Visual C++, you must declare 491 main() without any return type: 492 main(int argc, char *argv[]) { 493 /* Do the program... */ 494 return(0); 495 } 496 C++ programs should also return a value if compiled under VC++. 497 498 The blit_endian member of the SDL_VideoInfo struct has been removed. 499 500 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there 501 is now no longer any function to translate a keysym to a character. 502 503 The SDL_keysym structure has been extended with a 'scancode' and 504 'unicode' member. The 'scancode' is a hardware specific scancode 505 for the key that was pressed, and may be 0. The 'unicode' member 506 is a 16-bit UNICODE translation of the key that was pressed along 507 with any modifiers or compose keys that have been pressed. 508 If no UNICODE translation exists for the key, 'unicode' will be 0. 509 510 Added a function SDL_EnableUNICODE() to enable/disable UNICODE 511 translation of character keypresses. Translation defaults off. 512 513 To convert existing code to use the new API, change code which 514 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(), 515 and change code which uses it to get the ASCII value of a sym to 516 use the 'unicode' member of the event keysym. 517 5180.9.12: 519 There is partial support for 64-bit datatypes. I don't recommend 520 you use this if you have a choice, because 64-bit datatypes are not 521 supported on many platforms. On platforms for which it is supported, 522 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and 523 you can use the Uint64 and Sint64 datatypes. 524 525 Added functions to SDL_endian.h to support 64-bit datatypes: 526 SDL_SwapLE64(), SDL_SwapBE64(), 527 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64() 528 529 A new member "len_ratio" has been added to the SDL_AudioCVT structure, 530 and allows you to determine either the original buffer length or the 531 converted buffer length, given the other. 532 533 A new function SDL_FreeWAV() has been added to the API to free data 534 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since 535 the gcc compiled DLL uses a different heap than VC++ compiled apps. 536 537 SDL now has initial support for international keyboards using the 538 Latin character set. 539 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD 540 compile-time variable, or you can set the environment variable 541 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire. 542 The valid values for these variables can be found in SDL_keyboard.c 543 544 Full support for German and French keyboards under X11 is implemented. 545 5460.9.11: 547 The THREADED_EVENTS compile-time define has been replaced with the 548 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(), 549 SDL will create a separate thread to perform input event handling. 550 If this flag is passed to SDL_Init(), and the OS doesn't support 551 event handling in a separate thread, SDL_Init() will fail. 552 Be sure to add calls to SDL_Delay() in your main thread to allow 553 the OS to schedule your event thread, or it may starve, leading 554 to slow event delivery and/or dropped events. 555 Currently MacOS and Win32 do not support this flag, while BeOS 556 and Linux do support it. I recommend that your application only 557 use this flag if absolutely necessary. 558 559 The SDL thread function passed to SDL_CreateThread() now returns a 560 status. This status can be retrieved by passing a non-NULL pointer 561 as the 'status' argument to SDL_WaitThread(). 562 563 The volume parameter to SDL_MixAudio() has been increased in range 564 from (0-8) to (0-128) 565 566 SDL now has a data source abstraction which can encompass a file, 567 an area of memory, or any custom object you can envision. It uses 568 these abstractions, SDL_RWops, in the endian read/write functions, 569 and the built-in WAV and BMP file loaders. This means you can load 570 WAV chunks from memory mapped files, compressed archives, network 571 pipes, or anything else that has a data read abstraction. 572 573 There are three built-in data source abstractions: 574 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem() 575 along with a generic data source allocation function: 576 SDL_AllocRW() 577 These data sources can be used like stdio file pointers with the 578 following convenience functions: 579 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose() 580 These functions are defined in the new header file "SDL_rwops.h" 581 582 The endian swapping functions have been turned into macros for speed 583 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines 584 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on 585 the endianness of the host system. 586 587 The endian read/write functions now take an SDL_RWops pointer 588 instead of a stdio FILE pointer, to support the new data source 589 abstraction. 590 591 The SDL_*LoadWAV() functions have been replaced with a single 592 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's 593 first parameter, and a flag whether or not to automatically 594 free it as the second parameter. SDL_LoadWAV() is a macro for 595 backward compatibility and convenience: 596 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...); 597 598 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced 599 with a single function that takes a SDL_RWops pointer as it's 600 first parameter, and a flag whether or not to automatically 601 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP() 602 are macros for backward compatibility and convenience: 603 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...); 604 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...); 605 Note that these functions use SDL_RWseek() extensively, and should 606 not be used on pipes or other non-seekable data sources. 607 6080.9.10: 609 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been 610 extended to support multiple types of display drivers, as well as 611 safe access to the X11 display when THREADED_EVENTS is enabled. 612 The new structures are documented in the SDL_syswm.h header file. 613 614 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard 615 should now work properly, as well as the "Windows" keys on US 616 keyboards. 617 618 The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab 619 instead of trying to open each block device on the system. 620 The CD must be listed in /etc/fstab as using the iso9660 filesystem. 621 622 On Linux, if you define THREADED_EVENTS at compile time, a separate 623 thread will be spawned to gather X events asynchronously from the 624 graphics updates. This hasn't been extensively tested, but it does 625 provide a means of handling keyboard and mouse input in a separate 626 thread from the graphics thread. (This is now enabled by default.) 627 628 A special access function SDL_PeepEvents() allows you to manipulate 629 the event queue in a thread-safe manner, including peeking at events, 630 removing events of a specified type, and adding new events of arbitrary 631 type to the queue (use the new 'user' member of the SDL_Event type). 632 633 If you use SDL_PeepEvents() to gather events, then the main graphics 634 thread needs to call SDL_PumpEvents() periodically to drive the event 635 loop and generate input events. This is not necessary if SDL has been 636 compiled with THREADED_EVENTS defined, but doesn't hurt. 637 638 A new function SDL_ThreadID() returns the identifier associated with 639 the current thread. 640 6410.9.9: 642 The AUDIO_STEREO format flag has been replaced with a new 'channels' 643 member of the SDL_AudioSpec structure. The channels are 1 for mono 644 audio, and 2 for stereo audio. In the future more channels may be 645 supported for 3D surround sound. 646 647 The SDL_MixAudio() function now takes an additional volume parameter, 648 which should be set to SDL_MIX_MAXVOLUME for compatibility with the 649 original function. 650 651 The CD-ROM functions which take a 'cdrom' parameter can now be 652 passed NULL, and will act on the last successfully opened CD-ROM. 653 6540.9.8: 655 No changes, bugfixes only. 656 6570.9.7: 658 No changes, bugfixes only. 659 6600.9.6: 661 Added a fast rectangle fill function: SDL_FillRect() 662 663 Addition of a useful function for getting info on the video hardware: 664 const SDL_VideoInfo *SDL_GetVideoInfo(void) 665 This function replaces SDL_GetDisplayFormat(). 666 667 Initial support for double-buffering: 668 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode() 669 Update the screen with a new function: SDL_Flip() 670 671 SDL_AllocSurface() takes two new flags: 672 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits 673 and if the hardware supports hardware acceleration of colorkey blits 674 between two surfaces in video memory, to place the surface in video 675 memory if possible, otherwise it will be placed in system memory. 676 SDL_SRCALPHA means that the surface will be used for alpha blits and 677 if the hardware supports hardware acceleration of alpha blits between 678 two surfaces in video memory, to place the surface in video memory 679 if possible, otherwise it will be placed in system memory. 680 SDL_HWSURFACE now means that the surface will be created with the 681 same format as the display surface, since having surfaces in video 682 memory is only useful for fast blitting to the screen, and you can't 683 blit surfaces with different surface formats in video memory. 684 6850.9.5: 686 You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume 687 that the icon consists of the entire image. 688 689 SDL_LowerBlit() is back -- but don't use it on the display surface. 690 It is exactly the same as SDL_MiddleBlit(), but doesn't check for 691 thread safety. 692 693 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take 694 a FILE pointer instead of a file name. 695 696 Added CD-ROM audio control API: 697 SDL_CDNumDrives() 698 SDL_CDName() 699 SDL_CDOpen() 700 SDL_CDStatus() 701 SDL_CDPlayTracks() 702 SDL_CDPlay() 703 SDL_CDPause() 704 SDL_CDResume() 705 SDL_CDStop() 706 SDL_CDEject() 707 SDL_CDClose() 708 7090.9.4: 710 No changes, bugfixes only. 711 7120.9.3: 713 Mouse motion event now includes relative motion information: 714 Sint16 event->motion.xrel, Sint16 event->motion.yrel 715 716 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT 717 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile) 718 7190.9.2: 720 No changes, bugfixes only. 721 7220.9.1: 723 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now 724 automatically mapped on blit. 725 7260.8.0: 727 SDL stable release 728
