2001-04-26 16:45:43 +00:00
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This is a list of API changes in SDL's version history.
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Version 1.0:
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2006-03-13 01:41:32 +00:00
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1.2.10:
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2006-05-09 08:52:54 +00:00
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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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2006-05-04 16:51:07 +00:00
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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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2006-04-27 07:59:16 +00:00
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Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications.
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2006-04-27 08:39:51 +00:00
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Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration.
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2006-03-15 17:46:41 +00:00
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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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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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2006-03-13 01:41:32 +00:00
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Added SDL_GetKeyRepeat()
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2006-03-15 17:46:41 +00:00
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2006-03-13 01:41:32 +00:00
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Added SDL_config.h, with defaults for various build environments.
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2003-11-18 01:27:06 +00:00
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1.2.7:
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2003-11-24 22:52:28 +00:00
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Added CPU feature detection functions to SDL_cpuinfo.h:
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2004-01-08 16:01:07 +00:00
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SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(),
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SDL_HasAltiVec()
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2004-01-04 15:18:08 +00:00
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Added function to create RWops from const memory: SDL_RWFromConstMem()
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2003-11-18 01:27:06 +00:00
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2003-07-10 07:46:19 +00:00
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1.2.6:
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Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject()
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2003-07-22 15:33:28 +00:00
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Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA
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2003-07-22 15:10:06 +00:00
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2002-08-19 18:09:44 +00:00
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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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Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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2001-04-26 16:45:43 +00:00
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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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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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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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Added a function to query the current event filter:
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SDL_EventFilter SDL_GetEventFilter(void)
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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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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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Note that you may not blit to or from a locked surface.
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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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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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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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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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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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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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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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Added a function to see what subsystems have been initialized:
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Uint32 SDL_WasInit(Uint32 flags)
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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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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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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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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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SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
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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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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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The blit semantics for surfaces with and without alpha and colorkey
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have now been defined:
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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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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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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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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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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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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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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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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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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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1.1.3:
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Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
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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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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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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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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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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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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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1.1.2:
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Added multiple timer support:
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SDL_AddTimer() and SDL_RemoveTimer()
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SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
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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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You can load GL extension functions by using the function:
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SDL_GL_LoadProcAddress()
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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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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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Added a function to push events into the event queue:
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SDL_PushEvent()
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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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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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Added a function to get mouse deltas since last query:
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SDL_GetRelativeMouseState()
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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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Added a function to get the current audio status:
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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
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(Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
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0.9.2:
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No changes, bugfixes only.
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0.9.1:
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Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
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automatically mapped on blit.
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0.8.0:
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SDL stable release
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