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Diffstat (limited to 'distrib/sdl-1.2.15/WhatsNew')
| -rw-r--r-- | distrib/sdl-1.2.15/WhatsNew | 727 |
1 files changed, 727 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/WhatsNew b/distrib/sdl-1.2.15/WhatsNew new file mode 100644 index 0000000..927fdd2 --- /dev/null +++ b/distrib/sdl-1.2.15/WhatsNew @@ -0,0 +1,727 @@ + +This is a list of API changes in SDL's version history. + +Version 1.0: + +1.2.14: + Added cast macros for correct usage with C++: + SDL_reinterpret_cast(type, expression) + SDL_static_cast(type, expression) + + Added SDL_VIDEO_FULLSCREEN_DISPLAY as a preferred synonym for + SDL_VIDEO_FULLSCREEN_HEAD on X11. + + Added SDL_DISABLE_LOCK_KEYS environment variable to enable normal + up/down events for Caps-Lock and Num-Lock keys. + +1.2.13: + Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants. + +1.2.12: + Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling + of the screensaver on Mac OS X and X11. + +1.2.10: + If SDL_OpenAudio() is passed zero for the desired format + fields, the following environment variables will be used + to fill them in: + SDL_AUDIO_FREQUENCY + SDL_AUDIO_FORMAT + SDL_AUDIO_CHANNELS + SDL_AUDIO_SAMPLES + If an environment variable is not specified, it will be set + to a reasonable default value. + + Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment + variable, currently supported on X11 Xinerama configurations. + + Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications. + + Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration. + + 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. + + SDL_SetVideoMode() now accepts 0 for width or height and will use + the current video mode (or the desktop mode if no mode has been set.) + + Added SDL_GetKeyRepeat() + + Added SDL_config.h, with defaults for various build environments. + +1.2.7: + Added CPU feature detection functions to SDL_cpuinfo.h: + SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(), + SDL_HasAltiVec() + Added function to create RWops from const memory: SDL_RWFromConstMem() + +1.2.6: + Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() + + Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA + +1.2.5: + Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5) + + Added SDL_GL_STEREO for stereoscopic OpenGL contexts + +1.2.0: + Added SDL_VIDEOEXPOSE event to signal that the screen needs to + be redrawn. This is currently only delivered to OpenGL windows + on X11, though it may be delivered in the future when the video + memory is lost under DirectX. + +1.1.8: + You can pass SDL_NOFRAME to SDL_VideoMode() to create a window + that has no title bar or frame decoration. Fullscreen video + modes automatically have this flag set. + + Added a function to query the clipping rectangle for a surface: + void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect) + + Added a function to query the current event filter: + SDL_EventFilter SDL_GetEventFilter(void) + + If you pass -1 to SDL_ShowCursor(), it won't change the current + cursor visibility state, but will still return it. + + SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning + you can nest them as deep as you want, as long as each lock call + has a matching unlock call. The surface remains locked until the + last matching unlock call. + + Note that you may not blit to or from a locked surface. + +1.1.7: + The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take + arrays of Uint16 values instead of Uint8 values. For the most part, + you can just take your old values and shift them up 8 bits to get + new correct values for your gamma ramps. + + You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface() + and SDL will try to RLE accelerate colorkey and alpha blits in the + resulting surface. + +1.1.6: + Added a function to return the thread ID of a specific thread: + Uint32 SDL_GetThreadID(SDL_Thread *thread) + If 'thread' is NULL, this function returns the id for this thread. + +1.1.5: + The YUV overlay structure has been changed to use an array of + pitches and pixels representing the planes of a YUV image, to + better enable hardware acceleration. The YV12 and IYUV formats + each have three planes, corresponding to the Y, U, and V portions + of the image, while packed pixel YUV formats just have one plane. + + For palettized mode (8bpp), the screen colormap is now split in + a physical and a logical palette. The physical palette determines + what colours the screen pixels will get when displayed, and the + logical palette controls the mapping from blits to/from the screen. + A new function, SDL_SetPalette() has been added to change + logical and physical palettes separately. SDL_SetColors() works + just as before, and is equivalent to calling SDL_SetPalette() with + a flag argument of (SDL_LOGPAL|SDL_PHYSPAL). + + SDL_BlitSurface() no longer modifies the source rectangle, only the + destination rectangle. The width/height members of the destination + rectangle are ignored, only the position is used. + + The old source clipping function SDL_SetClipping() has been replaced + with a more useful function to set the destination clipping rectangle: + SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect) + + Added a function to see what subsystems have been initialized: + Uint32 SDL_WasInit(Uint32 flags) + + The Big Alpha Flip: SDL now treats alpha as opacity like everybody + else, and not as transparency: + + A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255 + A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0 + Values between 0 and 255 vary from fully transparent to fully opaque. + + New functions: + SDL_DisplayFormatAlpha() + Returns a surface converted to a format with alpha-channel + that can be blit efficiently to the screen. (In other words, + like SDL_DisplayFormat() but the resulting surface has + an alpha channel.) This is useful for surfaces with alpha. + SDL_MapRGBA() + Works as SDL_MapRGB() but takes an additional alpha parameter. + SDL_GetRGBA() + Works as SDL_GetRGB() but also returns the alpha value + (SDL_ALPHA_OPAQUE for formats without an alpha channel) + + Both SDL_GetRGB() and SDL_GetRGBA() now always return values in + the [0..255] interval. Previously, SDL_GetRGB() would return + (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format. + (N.B.: This is broken for bit fields < 3 bits.) + + SDL_MapRGB() returns pixels in which the alpha channel is set opaque. + + SDL_SetAlpha() can now be used for both setting the per-surface + alpha, using the new way of thinking of alpha, and also to enable + and disable per-pixel alpha blending for surfaces with an alpha + channel: + To disable alpha blending: + SDL_SetAlpha(surface, 0, 0); + To re-enable alpha blending: + SDL_SetAlpha(surface, SDL_SRCALPHA, 0); + Surfaces with an alpha channel have blending enabled by default. + + SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests + RLE acceleration of blits, just as like with SDL_SetColorKey(). + This flag can be set for both surfaces with an alpha channel + and surfaces with an alpha value set by SDL_SetAlpha(). + As always, RLE surfaces must be locked before pixel access is + allowed, and unlocked before any other SDL operations are done + on it. + + The blit semantics for surfaces with and without alpha and colorkey + have now been defined: + + RGBA->RGB: + SDL_SRCALPHA set: + alpha-blend (using alpha-channel). + SDL_SRCCOLORKEY ignored. + SDL_SRCALPHA not set: + copy RGB. + if SDL_SRCCOLORKEY set, only copy the pixels matching the + RGB values of the source colour key, ignoring alpha in the + comparison. + + RGB->RGBA: + SDL_SRCALPHA set: + alpha-blend (using the source per-surface alpha value); + set destination alpha to opaque. + SDL_SRCALPHA not set: + copy RGB, set destination alpha to opaque. + both: + if SDL_SRCCOLORKEY set, only copy the pixels matching the + source colour key. + + RGBA->RGBA: + SDL_SRCALPHA set: + alpha-blend (using the source alpha channel) the RGB values; + leave destination alpha untouched. [Note: is this correct?] + SDL_SRCCOLORKEY ignored. + SDL_SRCALPHA not set: + copy all of RGBA to the destination. + if SDL_SRCCOLORKEY set, only copy the pixels matching the + RGB values of the source colour key, ignoring alpha in the + comparison. + + RGB->RGB: + SDL_SRCALPHA set: + alpha-blend (using the source per-surface alpha value). + SDL_SRCALPHA not set: + copy RGB. + both: + if SDL_SRCCOLORKEY set, only copy the pixels matching the + source colour key. + + As a special case, blits from surfaces with per-surface alpha + value of 128 (50% transparency) are optimised and much faster + than other alpha values. This does not apply to surfaces with + alpha channels (per-pixel alpha). + + New functions for manipulating the gamma of the display have + been added: + int SDL_SetGamma(float red, float green, float blue); + int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); + int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue); + Gamma ramps are tables with 256 entries which map the screen color + components into actually displayed colors. For an example of + implementing gamma correction and gamma fades, see test/testgamma.c + Gamma control is not supported on all hardware. + +1.1.4: + The size of the SDL_CDtrack structure changed from 8 to 12 bytes + as the size of the length member was extended to 32 bits. + + You can now use SDL for 2D blitting with a GL mode by passing the + SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or + 32 bpp, and the data in the framebuffer is put into the GL scene + when you call SDL_UpdateRects(), and the scene will be visible + when you call SDL_GL_SwapBuffers(). + + Run the "testgl" test program with the -logo command line option + to see an example of this blending of 2D and 3D in SDL. + +1.1.3: + Added SDL_FreeRW() to the API, to complement SDL_AllocRW() + + Added resizable window support - just add SDL_RESIZABLE to the + SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events. + See SDL_events.h for details on the new SDL_ResizeEvent structure. + + Added condition variable support, based on mutexes and semaphores. + SDL_CreateCond() + SDL_DestroyCond() + SDL_CondSignal() + SDL_CondBroadcast() + SDL_CondWait() + SDL_CondTimedWait() + The new function prototypes are in SDL_mutex.h + + Added counting semaphore support, based on the mutex primitive. + SDL_CreateSemaphore() + SDL_DestroySemaphore() + SDL_SemWait() + SDL_SemTryWait() + SDL_SemWaitTimeout() + SDL_SemPost() + SDL_SemValue() + The new function prototypes are in SDL_mutex.h + + Added support for asynchronous blitting. To take advantage of this, + you must set the SDL_ASYNCBLIT flag when setting the video mode and + creating surfaces that you want accelerated in this way. You must + lock surfaces that have this flag set, and the lock will block until + any queued blits have completed. + + Added YUV video overlay support. + The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU. + This function creates an overlay surface: + SDL_CreateYUVOverlay() + You must lock and unlock the overlay to get access to the data: + SDL_LockYUVOverlay() SDL_UnlockYUVOverlay() + You can then display the overlay: + SDL_DisplayYUVOverlay() + You must free the overlay when you are done using it: + SDL_FreeYUVOverlay() + See SDL_video.h for the full function prototypes. + + The joystick hat position constants have been changed: + Old constant New constant + ------------ ------------ + 0 SDL_HAT_CENTERED + 1 SDL_HAT_UP + 2 SDL_HAT_RIGHTUP + 3 SDL_HAT_RIGHT + 4 SDL_HAT_RIGHTDOWN + 5 SDL_HAT_DOWN + 6 SDL_HAT_LEFTDOWN + 7 SDL_HAT_LEFT + 8 SDL_HAT_LEFTUP + The new constants are bitmasks, so you can check for the + individual axes like this: + if ( hat_position & SDL_HAT_UP ) { + } + and you'll catch left-up, up, and right-up. + +1.1.2: + Added multiple timer support: + SDL_AddTimer() and SDL_RemoveTimer() + + SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL. + +1.1.0: + Added initial OpenGL support. + First set GL attributes (such as RGB depth, alpha depth, etc.) + SDL_GL_SetAttribute() + Then call SDL_SetVideoMode() with the SDL_OPENGL flag. + Perform all of your normal GL drawing. + Finally swap the buffers with the new SDL function: + SDL_GL_SwapBuffers() + See the new 'testgl' test program for an example of using GL with SDL. + + You can load GL extension functions by using the function: + SDL_GL_LoadProcAddress() + + Added functions to initialize and cleanup specific SDL subsystems: + SDL_InitSubSystem() and SDL_QuitSubSystem() + + Added user-defined event type: + typedef struct { + Uint8 type; + int code; + void *data1; + void *data2; + } SDL_UserEvent; + This structure is in the "user" member of an SDL_Event. + + Added a function to push events into the event queue: + SDL_PushEvent() + + Example of using the new SDL user-defined events: + { + SDL_Event event; + + event.type = SDL_USEREVENT; + event.user.code = my_event_code; + event.user.data1 = significant_data; + event.user.data2 = 0; + SDL_PushEvent(&event); + } + + Added a function to get mouse deltas since last query: + SDL_GetRelativeMouseState() + + Added a boolean datatype to SDL_types.h: + SDL_bool = { SDL_TRUE, SDL_FALSE } + + Added a function to get the current audio status: + SDL_GetAudioState(); + It returns one of: + SDL_AUDIO_STOPPED, + SDL_AUDIO_PLAYING, + SDL_AUDIO_PAUSED + + Added an AAlib driver (ASCII Art) - by Stephane Peter. + +1.0.6: + The input grab state is reset after each call to SDL_SetVideoMode(). + The input is grabbed by default in fullscreen mode, and ungrabbed in + windowed mode. If you want to set input grab to a particular value, + you should set it after each call to SDL_SetVideoMode(). + +1.0.5: + Exposed SDL_AudioInit(), SDL_VideoInit() + Added SDL_AudioDriverName() and SDL_VideoDriverName() + + Added new window manager function: + SDL_WM_ToggleFullScreen() + This is currently implemented only on Linux + + The ALT-ENTER code has been removed - it's not appropriate for a + lib to bind keys when they aren't even emergency escape sequences. + + ALT-ENTER functionality can be implemented with the following code: + + int Handle_AltEnter(const SDL_Event *event) + { + if ( event->type == SDL_KEYDOWN ) { + if ( (event->key.keysym.sym == SDLK_RETURN) && + (event->key.keysym.mod & KMOD_ALT) ) { + SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); + return(0); + } + } + return(1); + } + SDL_SetEventFilter(Handle_AltEnter); + +1.0.3: + Under X11, if you grab the input and hide the mouse cursor, + the mouse will go into a "relative motion" mode where you + will always get relative motion events no matter how far in + each direction you move the mouse - relative motion is not + bounded by the edges of the window (though the absolute values + of the mouse positions are clamped by the size of the window). + The SVGAlib, framebuffer console, and DirectInput drivers all + have this behavior naturally, and the GDI and BWindow drivers + never go into "relative motion" mode. + +1.0.2: + Added a function to enable keyboard repeat: + SDL_EnableKeyRepeat() + + Added a function to grab the mouse and keyboard input + SDL_WM_GrabInput() + + Added a function to iconify the window. + SDL_WM_IconifyWindow() + If this function succeeds, the application will receive an event + signaling SDL_APPACTIVE event + +1.0.1: + Added constants to SDL_audio.h for 16-bit native byte ordering: + AUDIO_U16SYS, AUDIO_S16SYS + +1.0.0: + New public release + +Version 0.11: + +0.11.5: + A new function SDL_GetVideoSurface() has been added, and returns + a pointer to the current display surface. + + SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and + a new function SDL_CreateRGBSurfaceFrom() has been added to allow + creating an SDL surface from an existing pixel data buffer. + + Added SDL_GetRGB() to the headers and documentation. + +0.11.4: + SDL_SetLibraryPath() is no longer meaningful, and has been removed. + +0.11.3: + A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from + installing fatal signal handlers on operating systems that support + them. + +Version 0.9: + +0.9.15: + SDL_CreateColorCursor() has been removed. Color cursors should + be implemented as sprites, blitted by the application when the + cursor moves. To get smooth color cursor updates when the app + is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This + allows you to handle the mouse motion in another thread from an + event filter function, but is currently only supported by Linux + and BeOS. Note that you'll have to protect the display surface + from multi-threaded access by using mutexes if you do this. + + Thread-safe surface support has been removed from SDL. + This makes blitting somewhat faster, by removing SDL_MiddleBlit(). + Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead. + You can make your surfaces thread-safe by allocating your own + mutex and making lock/unlock calls around accesses to your surface. + +0.9.14: + SDL_GetMouseState() now takes pointers to int rather than Uint16. + + If you set the SDL_WINDOWID environment variable under UNIX X11, + SDL will use that as the main window instead of creating it's own. + This is an unsupported extension to SDL, and not portable at all. + +0.9.13: + Added a function SDL_SetLibraryPath() which can be used to specify + the directory containing the SDL dynamic libraries. This is useful + for commercial applications which ship with particular versions + of the libraries, and for security on multi-user systems. + If this function is not used, the default system directories are + searched using the native dynamic object loading mechanism. + + In order to support C linkage under Visual C++, you must declare + main() without any return type: + main(int argc, char *argv[]) { + /* Do the program... */ + return(0); + } + C++ programs should also return a value if compiled under VC++. + + The blit_endian member of the SDL_VideoInfo struct has been removed. + + SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there + is now no longer any function to translate a keysym to a character. + + The SDL_keysym structure has been extended with a 'scancode' and + 'unicode' member. The 'scancode' is a hardware specific scancode + for the key that was pressed, and may be 0. The 'unicode' member + is a 16-bit UNICODE translation of the key that was pressed along + with any modifiers or compose keys that have been pressed. + If no UNICODE translation exists for the key, 'unicode' will be 0. + + Added a function SDL_EnableUNICODE() to enable/disable UNICODE + translation of character keypresses. Translation defaults off. + + To convert existing code to use the new API, change code which + uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(), + and change code which uses it to get the ASCII value of a sym to + use the 'unicode' member of the event keysym. + +0.9.12: + There is partial support for 64-bit datatypes. I don't recommend + you use this if you have a choice, because 64-bit datatypes are not + supported on many platforms. On platforms for which it is supported, + the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and + you can use the Uint64 and Sint64 datatypes. + + Added functions to SDL_endian.h to support 64-bit datatypes: + SDL_SwapLE64(), SDL_SwapBE64(), + SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64() + + A new member "len_ratio" has been added to the SDL_AudioCVT structure, + and allows you to determine either the original buffer length or the + converted buffer length, given the other. + + A new function SDL_FreeWAV() has been added to the API to free data + allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since + the gcc compiled DLL uses a different heap than VC++ compiled apps. + + SDL now has initial support for international keyboards using the + Latin character set. + If a particular mapping is desired, you can set the DEFAULT_KEYBOARD + compile-time variable, or you can set the environment variable + "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire. + The valid values for these variables can be found in SDL_keyboard.c + + Full support for German and French keyboards under X11 is implemented. + +0.9.11: + The THREADED_EVENTS compile-time define has been replaced with the + SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(), + SDL will create a separate thread to perform input event handling. + If this flag is passed to SDL_Init(), and the OS doesn't support + event handling in a separate thread, SDL_Init() will fail. + Be sure to add calls to SDL_Delay() in your main thread to allow + the OS to schedule your event thread, or it may starve, leading + to slow event delivery and/or dropped events. + Currently MacOS and Win32 do not support this flag, while BeOS + and Linux do support it. I recommend that your application only + use this flag if absolutely necessary. + + The SDL thread function passed to SDL_CreateThread() now returns a + status. This status can be retrieved by passing a non-NULL pointer + as the 'status' argument to SDL_WaitThread(). + + The volume parameter to SDL_MixAudio() has been increased in range + from (0-8) to (0-128) + + SDL now has a data source abstraction which can encompass a file, + an area of memory, or any custom object you can envision. It uses + these abstractions, SDL_RWops, in the endian read/write functions, + and the built-in WAV and BMP file loaders. This means you can load + WAV chunks from memory mapped files, compressed archives, network + pipes, or anything else that has a data read abstraction. + + There are three built-in data source abstractions: + SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem() + along with a generic data source allocation function: + SDL_AllocRW() + These data sources can be used like stdio file pointers with the + following convenience functions: + SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose() + These functions are defined in the new header file "SDL_rwops.h" + + The endian swapping functions have been turned into macros for speed + and SDL_CalculateEndian() has been removed. SDL_endian.h now defines + SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on + the endianness of the host system. + + The endian read/write functions now take an SDL_RWops pointer + instead of a stdio FILE pointer, to support the new data source + abstraction. + + The SDL_*LoadWAV() functions have been replaced with a single + SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's + first parameter, and a flag whether or not to automatically + free it as the second parameter. SDL_LoadWAV() is a macro for + backward compatibility and convenience: + SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...); + + The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced + with a single function that takes a SDL_RWops pointer as it's + first parameter, and a flag whether or not to automatically + free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP() + are macros for backward compatibility and convenience: + SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...); + SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...); + Note that these functions use SDL_RWseek() extensively, and should + not be used on pipes or other non-seekable data sources. + +0.9.10: + The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been + extended to support multiple types of display drivers, as well as + safe access to the X11 display when THREADED_EVENTS is enabled. + The new structures are documented in the SDL_syswm.h header file. + + Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard + should now work properly, as well as the "Windows" keys on US + keyboards. + + The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab + instead of trying to open each block device on the system. + The CD must be listed in /etc/fstab as using the iso9660 filesystem. + + On Linux, if you define THREADED_EVENTS at compile time, a separate + thread will be spawned to gather X events asynchronously from the + graphics updates. This hasn't been extensively tested, but it does + provide a means of handling keyboard and mouse input in a separate + thread from the graphics thread. (This is now enabled by default.) + + A special access function SDL_PeepEvents() allows you to manipulate + the event queue in a thread-safe manner, including peeking at events, + removing events of a specified type, and adding new events of arbitrary + type to the queue (use the new 'user' member of the SDL_Event type). + + If you use SDL_PeepEvents() to gather events, then the main graphics + thread needs to call SDL_PumpEvents() periodically to drive the event + loop and generate input events. This is not necessary if SDL has been + compiled with THREADED_EVENTS defined, but doesn't hurt. + + A new function SDL_ThreadID() returns the identifier associated with + the current thread. + +0.9.9: + The AUDIO_STEREO format flag has been replaced with a new 'channels' + member of the SDL_AudioSpec structure. The channels are 1 for mono + audio, and 2 for stereo audio. In the future more channels may be + supported for 3D surround sound. + + The SDL_MixAudio() function now takes an additional volume parameter, + which should be set to SDL_MIX_MAXVOLUME for compatibility with the + original function. + + The CD-ROM functions which take a 'cdrom' parameter can now be + passed NULL, and will act on the last successfully opened CD-ROM. + +0.9.8: + No changes, bugfixes only. + +0.9.7: + No changes, bugfixes only. + +0.9.6: + Added a fast rectangle fill function: SDL_FillRect() + + Addition of a useful function for getting info on the video hardware: + const SDL_VideoInfo *SDL_GetVideoInfo(void) + This function replaces SDL_GetDisplayFormat(). + + Initial support for double-buffering: + Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode() + Update the screen with a new function: SDL_Flip() + + SDL_AllocSurface() takes two new flags: + SDL_SRCCOLORKEY means that the surface will be used for colorkey blits + and if the hardware supports hardware acceleration of colorkey blits + between two surfaces in video memory, to place the surface in video + memory if possible, otherwise it will be placed in system memory. + SDL_SRCALPHA means that the surface will be used for alpha blits and + if the hardware supports hardware acceleration of alpha blits between + two surfaces in video memory, to place the surface in video memory + if possible, otherwise it will be placed in system memory. + SDL_HWSURFACE now means that the surface will be created with the + same format as the display surface, since having surfaces in video + memory is only useful for fast blitting to the screen, and you can't + blit surfaces with different surface formats in video memory. + +0.9.5: + You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume + that the icon consists of the entire image. + + SDL_LowerBlit() is back -- but don't use it on the display surface. + It is exactly the same as SDL_MiddleBlit(), but doesn't check for + thread safety. + + Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take + a FILE pointer instead of a file name. + + Added CD-ROM audio control API: + SDL_CDNumDrives() + SDL_CDName() + SDL_CDOpen() + SDL_CDStatus() + SDL_CDPlayTracks() + SDL_CDPlay() + SDL_CDPause() + SDL_CDResume() + SDL_CDStop() + SDL_CDEject() + SDL_CDClose() + +0.9.4: + No changes, bugfixes only. + +0.9.3: + Mouse motion event now includes relative motion information: + Sint16 event->motion.xrel, Sint16 event->motion.yrel + + X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT + (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile) + +0.9.2: + No changes, bugfixes only. + +0.9.1: + Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now + automatically mapped on blit. + +0.8.0: + SDL stable release |