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@@ -1,727 +1,727 @@
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-
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-This is a list of API changes in SDL's version history.
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-
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-Version 1.0:
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-
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-1.2.14:
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- Added cast macros for correct usage with C++:
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- SDL_reinterpret_cast(type, expression)
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- SDL_static_cast(type, expression)
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-
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- Added SDL_VIDEO_FULLSCREEN_DISPLAY as a preferred synonym for
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- SDL_VIDEO_FULLSCREEN_HEAD on X11.
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-
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- Added SDL_DISABLE_LOCK_KEYS environment variable to enable normal
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- up/down events for Caps-Lock and Num-Lock keys.
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-
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-1.2.13:
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- Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants.
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-
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-1.2.12:
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- Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling
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- of the screensaver on Mac OS X and X11.
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-
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-1.2.10:
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- If SDL_OpenAudio() is passed zero for the desired format
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- fields, the following environment variables will be used
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- to fill them in:
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- SDL_AUDIO_FREQUENCY
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- SDL_AUDIO_FORMAT
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- SDL_AUDIO_CHANNELS
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- SDL_AUDIO_SAMPLES
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- If an environment variable is not specified, it will be set
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- to a reasonable default value.
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-
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- Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment
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- variable, currently supported on X11 Xinerama configurations.
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-
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- Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications.
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-
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- Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration.
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-
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- Added current_w and current_h to the SDL_VideoInfo structure,
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- which is set to the desktop resolution during video intialization,
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- and then set to the current resolution when a video mode is set.
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-
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- SDL_SetVideoMode() now accepts 0 for width or height and will use
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- the current video mode (or the desktop mode if no mode has been set.)
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-
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- Added SDL_GetKeyRepeat()
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-
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- Added SDL_config.h, with defaults for various build environments.
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-
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-1.2.7:
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- Added CPU feature detection functions to SDL_cpuinfo.h:
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- SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(),
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- SDL_HasAltiVec()
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- Added function to create RWops from const memory: SDL_RWFromConstMem()
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-
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-1.2.6:
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- Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject()
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-
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- Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA
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-
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-1.2.5:
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- Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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-
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- Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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-
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-1.2.0:
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- Added SDL_VIDEOEXPOSE event to signal that the screen needs to
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- be redrawn. This is currently only delivered to OpenGL windows
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- on X11, though it may be delivered in the future when the video
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- memory is lost under DirectX.
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-
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-1.1.8:
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- You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
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- that has no title bar or frame decoration. Fullscreen video
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- modes automatically have this flag set.
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-
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- Added a function to query the clipping rectangle for a surface:
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- void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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-
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- Added a function to query the current event filter:
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- SDL_EventFilter SDL_GetEventFilter(void)
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-
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- If you pass -1 to SDL_ShowCursor(), it won't change the current
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- cursor visibility state, but will still return it.
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-
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- SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
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- you can nest them as deep as you want, as long as each lock call
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- has a matching unlock call. The surface remains locked until the
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- last matching unlock call.
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-
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- Note that you may not blit to or from a locked surface.
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-
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-1.1.7:
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- The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
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- arrays of Uint16 values instead of Uint8 values. For the most part,
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- you can just take your old values and shift them up 8 bits to get
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- new correct values for your gamma ramps.
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-
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- You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
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- and SDL will try to RLE accelerate colorkey and alpha blits in the
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- resulting surface.
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-
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-1.1.6:
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- Added a function to return the thread ID of a specific thread:
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- Uint32 SDL_GetThreadID(SDL_Thread *thread)
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- If 'thread' is NULL, this function returns the id for this thread.
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-
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-1.1.5:
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- The YUV overlay structure has been changed to use an array of
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- pitches and pixels representing the planes of a YUV image, to
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- better enable hardware acceleration. The YV12 and IYUV formats
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- each have three planes, corresponding to the Y, U, and V portions
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- of the image, while packed pixel YUV formats just have one plane.
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-
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- For palettized mode (8bpp), the screen colormap is now split in
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- a physical and a logical palette. The physical palette determines
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- what colours the screen pixels will get when displayed, and the
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- logical palette controls the mapping from blits to/from the screen.
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- A new function, SDL_SetPalette() has been added to change
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- logical and physical palettes separately. SDL_SetColors() works
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- just as before, and is equivalent to calling SDL_SetPalette() with
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- a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
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-
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- SDL_BlitSurface() no longer modifies the source rectangle, only the
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- destination rectangle. The width/height members of the destination
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- rectangle are ignored, only the position is used.
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-
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- The old source clipping function SDL_SetClipping() has been replaced
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- with a more useful function to set the destination clipping rectangle:
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- SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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-
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- Added a function to see what subsystems have been initialized:
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- Uint32 SDL_WasInit(Uint32 flags)
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-
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- The Big Alpha Flip: SDL now treats alpha as opacity like everybody
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- else, and not as transparency:
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-
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- A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
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- A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
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- Values between 0 and 255 vary from fully transparent to fully opaque.
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-
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- New functions:
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- SDL_DisplayFormatAlpha()
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- Returns a surface converted to a format with alpha-channel
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- that can be blit efficiently to the screen. (In other words,
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- like SDL_DisplayFormat() but the resulting surface has
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- an alpha channel.) This is useful for surfaces with alpha.
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- SDL_MapRGBA()
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- Works as SDL_MapRGB() but takes an additional alpha parameter.
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- SDL_GetRGBA()
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- Works as SDL_GetRGB() but also returns the alpha value
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- (SDL_ALPHA_OPAQUE for formats without an alpha channel)
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-
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- Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
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- the [0..255] interval. Previously, SDL_GetRGB() would return
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- (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
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- (N.B.: This is broken for bit fields < 3 bits.)
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-
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- SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
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-
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- SDL_SetAlpha() can now be used for both setting the per-surface
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- alpha, using the new way of thinking of alpha, and also to enable
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- and disable per-pixel alpha blending for surfaces with an alpha
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- channel:
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- To disable alpha blending:
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- SDL_SetAlpha(surface, 0, 0);
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- To re-enable alpha blending:
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- SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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- Surfaces with an alpha channel have blending enabled by default.
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-
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- SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
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- RLE acceleration of blits, just as like with SDL_SetColorKey().
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- This flag can be set for both surfaces with an alpha channel
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- and surfaces with an alpha value set by SDL_SetAlpha().
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- As always, RLE surfaces must be locked before pixel access is
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- allowed, and unlocked before any other SDL operations are done
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- on it.
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-
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- The blit semantics for surfaces with and without alpha and colorkey
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- have now been defined:
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-
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- RGBA->RGB:
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- SDL_SRCALPHA set:
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- alpha-blend (using alpha-channel).
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- SDL_SRCCOLORKEY ignored.
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- SDL_SRCALPHA not set:
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- copy RGB.
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- if SDL_SRCCOLORKEY set, only copy the pixels matching the
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- RGB values of the source colour key, ignoring alpha in the
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- comparison.
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-
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- RGB->RGBA:
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- SDL_SRCALPHA set:
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- alpha-blend (using the source per-surface alpha value);
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- set destination alpha to opaque.
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- SDL_SRCALPHA not set:
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- copy RGB, set destination alpha to opaque.
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- both:
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- if SDL_SRCCOLORKEY set, only copy the pixels matching the
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- source colour key.
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-
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- RGBA->RGBA:
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- SDL_SRCALPHA set:
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- alpha-blend (using the source alpha channel) the RGB values;
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- leave destination alpha untouched. [Note: is this correct?]
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- SDL_SRCCOLORKEY ignored.
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- SDL_SRCALPHA not set:
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- copy all of RGBA to the destination.
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- if SDL_SRCCOLORKEY set, only copy the pixels matching the
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- RGB values of the source colour key, ignoring alpha in the
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- comparison.
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-
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- RGB->RGB:
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- SDL_SRCALPHA set:
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- alpha-blend (using the source per-surface alpha value).
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- SDL_SRCALPHA not set:
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- copy RGB.
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- both:
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- if SDL_SRCCOLORKEY set, only copy the pixels matching the
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- source colour key.
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-
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- As a special case, blits from surfaces with per-surface alpha
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- value of 128 (50% transparency) are optimised and much faster
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- than other alpha values. This does not apply to surfaces with
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- alpha channels (per-pixel alpha).
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-
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- New functions for manipulating the gamma of the display have
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- been added:
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- int SDL_SetGamma(float red, float green, float blue);
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- int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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- int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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- Gamma ramps are tables with 256 entries which map the screen color
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- components into actually displayed colors. For an example of
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- implementing gamma correction and gamma fades, see test/testgamma.c
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- Gamma control is not supported on all hardware.
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-
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-1.1.4:
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- The size of the SDL_CDtrack structure changed from 8 to 12 bytes
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- as the size of the length member was extended to 32 bits.
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-
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- You can now use SDL for 2D blitting with a GL mode by passing the
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- SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
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- 32 bpp, and the data in the framebuffer is put into the GL scene
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- when you call SDL_UpdateRects(), and the scene will be visible
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- when you call SDL_GL_SwapBuffers().
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-
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- Run the "testgl" test program with the -logo command line option
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- to see an example of this blending of 2D and 3D in SDL.
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-
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-1.1.3:
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- Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
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-
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- Added resizable window support - just add SDL_RESIZABLE to the
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- SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
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- See SDL_events.h for details on the new SDL_ResizeEvent structure.
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-
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- Added condition variable support, based on mutexes and semaphores.
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- SDL_CreateCond()
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- SDL_DestroyCond()
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- SDL_CondSignal()
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- SDL_CondBroadcast()
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- SDL_CondWait()
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- SDL_CondTimedWait()
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- The new function prototypes are in SDL_mutex.h
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-
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- Added counting semaphore support, based on the mutex primitive.
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- SDL_CreateSemaphore()
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- SDL_DestroySemaphore()
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- SDL_SemWait()
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- SDL_SemTryWait()
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- SDL_SemWaitTimeout()
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- SDL_SemPost()
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- SDL_SemValue()
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- The new function prototypes are in SDL_mutex.h
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-
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- Added support for asynchronous blitting. To take advantage of this,
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- you must set the SDL_ASYNCBLIT flag when setting the video mode and
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- creating surfaces that you want accelerated in this way. You must
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- lock surfaces that have this flag set, and the lock will block until
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- any queued blits have completed.
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-
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- Added YUV video overlay support.
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- The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
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- This function creates an overlay surface:
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- SDL_CreateYUVOverlay()
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- You must lock and unlock the overlay to get access to the data:
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- SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
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- You can then display the overlay:
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- SDL_DisplayYUVOverlay()
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- You must free the overlay when you are done using it:
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- SDL_FreeYUVOverlay()
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- See SDL_video.h for the full function prototypes.
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-
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- The joystick hat position constants have been changed:
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- Old constant New constant
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- ------------ ------------
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- 0 SDL_HAT_CENTERED
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- 1 SDL_HAT_UP
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- 2 SDL_HAT_RIGHTUP
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- 3 SDL_HAT_RIGHT
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- 4 SDL_HAT_RIGHTDOWN
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- 5 SDL_HAT_DOWN
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- 6 SDL_HAT_LEFTDOWN
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- 7 SDL_HAT_LEFT
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- 8 SDL_HAT_LEFTUP
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- The new constants are bitmasks, so you can check for the
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- individual axes like this:
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- if ( hat_position & SDL_HAT_UP ) {
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- }
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- and you'll catch left-up, up, and right-up.
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-
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-1.1.2:
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- Added multiple timer support:
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- SDL_AddTimer() and SDL_RemoveTimer()
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-
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- SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
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-
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-1.1.0:
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- Added initial OpenGL support.
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- First set GL attributes (such as RGB depth, alpha depth, etc.)
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- SDL_GL_SetAttribute()
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- Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
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- Perform all of your normal GL drawing.
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- Finally swap the buffers with the new SDL function:
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- SDL_GL_SwapBuffers()
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- See the new 'testgl' test program for an example of using GL with SDL.
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-
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- You can load GL extension functions by using the function:
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- SDL_GL_LoadProcAddress()
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-
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- Added functions to initialize and cleanup specific SDL subsystems:
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- SDL_InitSubSystem() and SDL_QuitSubSystem()
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-
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- Added user-defined event type:
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- typedef struct {
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- Uint8 type;
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- int code;
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- void *data1;
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- void *data2;
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- } SDL_UserEvent;
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- This structure is in the "user" member of an SDL_Event.
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-
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- Added a function to push events into the event queue:
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- SDL_PushEvent()
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-
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- Example of using the new SDL user-defined events:
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- {
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- SDL_Event event;
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-
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- event.type = SDL_USEREVENT;
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- event.user.code = my_event_code;
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- event.user.data1 = significant_data;
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- event.user.data2 = 0;
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- SDL_PushEvent(&event);
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- }
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-
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- Added a function to get mouse deltas since last query:
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- SDL_GetRelativeMouseState()
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-
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- Added a boolean datatype to SDL_types.h:
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- SDL_bool = { SDL_TRUE, SDL_FALSE }
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-
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- Added a function to get the current audio status:
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- SDL_GetAudioState();
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- It returns one of:
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- SDL_AUDIO_STOPPED,
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- SDL_AUDIO_PLAYING,
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- SDL_AUDIO_PAUSED
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-
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- Added an AAlib driver (ASCII Art) - by Stephane Peter.
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-
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-1.0.6:
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- The input grab state is reset after each call to SDL_SetVideoMode().
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- The input is grabbed by default in fullscreen mode, and ungrabbed in
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- windowed mode. If you want to set input grab to a particular value,
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- you should set it after each call to SDL_SetVideoMode().
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-
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-1.0.5:
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- Exposed SDL_AudioInit(), SDL_VideoInit()
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- Added SDL_AudioDriverName() and SDL_VideoDriverName()
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-
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- Added new window manager function:
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- SDL_WM_ToggleFullScreen()
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- This is currently implemented only on Linux
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-
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- The ALT-ENTER code has been removed - it's not appropriate for a
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- lib to bind keys when they aren't even emergency escape sequences.
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-
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|
- 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
|
|
|
+
|
|
|
+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
|
|
|
+
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+1.0.0:
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+ New public release
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+
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+Version 0.11:
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+
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+0.11.5:
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+ A new function SDL_GetVideoSurface() has been added, and returns
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+ a pointer to the current display surface.
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+
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+ SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
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+ a new function SDL_CreateRGBSurfaceFrom() has been added to allow
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+ creating an SDL surface from an existing pixel data buffer.
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+
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+ Added SDL_GetRGB() to the headers and documentation.
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+
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+0.11.4:
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+ SDL_SetLibraryPath() is no longer meaningful, and has been removed.
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+
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+0.11.3:
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+ A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
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+ installing fatal signal handlers on operating systems that support
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+ them.
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+
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+Version 0.9:
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+
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+0.9.15:
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+ SDL_CreateColorCursor() has been removed. Color cursors should
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+ be implemented as sprites, blitted by the application when the
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+ cursor moves. To get smooth color cursor updates when the app
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+ is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
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+ allows you to handle the mouse motion in another thread from an
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+ event filter function, but is currently only supported by Linux
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+ and BeOS. Note that you'll have to protect the display surface
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+ from multi-threaded access by using mutexes if you do this.
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+
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+ Thread-safe surface support has been removed from SDL.
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+ This makes blitting somewhat faster, by removing SDL_MiddleBlit().
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+ Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
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+ You can make your surfaces thread-safe by allocating your own
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+ mutex and making lock/unlock calls around accesses to your surface.
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+
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+0.9.14:
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+ SDL_GetMouseState() now takes pointers to int rather than Uint16.
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+
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+ If you set the SDL_WINDOWID environment variable under UNIX X11,
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+ SDL will use that as the main window instead of creating it's own.
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+ This is an unsupported extension to SDL, and not portable at all.
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+
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+0.9.13:
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+ Added a function SDL_SetLibraryPath() which can be used to specify
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+ the directory containing the SDL dynamic libraries. This is useful
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+ for commercial applications which ship with particular versions
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+ of the libraries, and for security on multi-user systems.
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+ If this function is not used, the default system directories are
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+ searched using the native dynamic object loading mechanism.
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+
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+ In order to support C linkage under Visual C++, you must declare
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+ main() without any return type:
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|
+ main(int argc, char *argv[]) {
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|
+ /* Do the program... */
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|
+ return(0);
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|
+ }
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+ C++ programs should also return a value if compiled under VC++.
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+
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+ The blit_endian member of the SDL_VideoInfo struct has been removed.
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+
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+ SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
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+ is now no longer any function to translate a keysym to a character.
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+
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+ The SDL_keysym structure has been extended with a 'scancode' and
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|
+ 'unicode' member. The 'scancode' is a hardware specific scancode
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+ for the key that was pressed, and may be 0. The 'unicode' member
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|
+ is a 16-bit UNICODE translation of the key that was pressed along
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+ with any modifiers or compose keys that have been pressed.
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|
+ If no UNICODE translation exists for the key, 'unicode' will be 0.
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+
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+ Added a function SDL_EnableUNICODE() to enable/disable UNICODE
|
|
|
+ translation of character keypresses. Translation defaults off.
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+
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+ To convert existing code to use the new API, change code which
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|
|
+ uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
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|
+ and change code which uses it to get the ASCII value of a sym to
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|
|
+ use the 'unicode' member of the event keysym.
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+
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|
|
+0.9.12:
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|
|
+ There is partial support for 64-bit datatypes. I don't recommend
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|
|
+ you use this if you have a choice, because 64-bit datatypes are not
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|
|
+ supported on many platforms. On platforms for which it is supported,
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+ the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
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|
+ you can use the Uint64 and Sint64 datatypes.
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+
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|
+ Added functions to SDL_endian.h to support 64-bit datatypes:
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|
|
+ SDL_SwapLE64(), SDL_SwapBE64(),
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|
|
+ SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
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+
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|
|
+ A new member "len_ratio" has been added to the SDL_AudioCVT structure,
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|
|
+ and allows you to determine either the original buffer length or the
|
|
|
+ converted buffer length, given the other.
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|
|
+
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|
|
+ 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.
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+
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|
|
+ SDL now has initial support for international keyboards using the
|
|
|
+ Latin character set.
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|
|
+ If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
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|
|
+ 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
|
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|
+
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|
|
+ Full support for German and French keyboards under X11 is implemented.
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+
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|
|
+0.9.11:
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|
|
+ The THREADED_EVENTS compile-time define has been replaced with the
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|
|
+ SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
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|
|
+ SDL will create a separate thread to perform input event handling.
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|
+ If this flag is passed to SDL_Init(), and the OS doesn't support
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|
|
+ event handling in a separate thread, SDL_Init() will fail.
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|
|
+ Be sure to add calls to SDL_Delay() in your main thread to allow
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|
|
+ the OS to schedule your event thread, or it may starve, leading
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|
|
+ to slow event delivery and/or dropped events.
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|
|
+ 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.
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|
|
+
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|
|
+ The SDL thread function passed to SDL_CreateThread() now returns a
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|
|
+ status. This status can be retrieved by passing a non-NULL pointer
|
|
|
+ as the 'status' argument to SDL_WaitThread().
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|
+
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|
|
+ The volume parameter to SDL_MixAudio() has been increased in range
|
|
|
+ from (0-8) to (0-128)
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|
|
+
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|
|
+ SDL now has a data source abstraction which can encompass a file,
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|
|
+ 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
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|
|
+ WAV chunks from memory mapped files, compressed archives, network
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|
|
+ pipes, or anything else that has a data read abstraction.
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|
|
+
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|
|
+ There are three built-in data source abstractions:
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|
|
+ 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
|