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提交 3bab79a7 编写于 作者: G Grissiom
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浏览文件 @ 3bab79a7
Kernel Design & Implementation
- Bernard Xiong <bernard.xiong@gmail.com>
LwIP 1.3.0/1.3.1/1.3.2/1.4.0
- Porting
Qiu Yi
Mbbill
- Testing
Bernard Xiong
Filesystem
- Porting and Add Virtual Filesystem
- Testing
Qiu Yi
prife
RTGUI
- Design and Implemenation
Bernard Xiong
Grissiom
BSP
Bernard Xiong
- ATMEL AT91SAM7S64 & AT91SAM7X256 Porting
- STM32 Porting
- S3C4510 Porting
Mbbill
- ATMEL AT91SAM7X256
Xulong Cao
- QEMU/x86
Aozima
- LPC 2148 Porting
- STM32 Porting
Jing Lee
- LPC 2478 Porting
Qiu Yi
- S3C2410 & S3C2440 Porting
- TI LM3S
others...
Kernel Design & Implementation
- Bernard Xiong <bernard.xiong@gmail.com>
LwIP 1.3.0/1.3.1/1.3.2/1.4.0
- Porting
Qiu Yi
Mbbill
- Testing
Bernard Xiong
Filesystem
- Porting and Add Virtual Filesystem
- Testing
Qiu Yi
prife
RTGUI
- Design and Implemenation
Bernard Xiong
Grissiom
BSP
Bernard Xiong
- ATMEL AT91SAM7S64 & AT91SAM7X256 Porting
- STM32 Porting
- S3C4510 Porting
Mbbill
- ATMEL AT91SAM7X256
Xulong Cao
- QEMU/x86
Aozima
- LPC 2148 Porting
- STM32 Porting
Jing Lee
- LPC 2478 Porting
Qiu Yi
- S3C2410 & S3C2440 Porting
- TI LM3S
others...
bsp/avr32uc3b0/SOFTWARE_FRAMEWORK/DRIVERS/INTC/exception.x
浏览文件 @ 3bab79a7
/* This file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
/* This file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
......
bsp/bf533/vdsp/bf533.dpj
浏览文件 @ 3bab79a7
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bsp/m16c62p/lnkm30627fhp.xcl
浏览文件 @ 3bab79a7
//================================================================
//
// IAR XLINK command file for the IAR C/C++ Compiler for
// Renesas M16C/R8C
//
// This is an example XLINK command file for use with the
// M30627FHP derivative.
//
// Derivative group: m16c 62p
//
//
// Usage: xlink your_file(s) -f this_file clm16c*.r48
//
// Copyright 2001-2008 IAR Systems AB.
//
// $Revision: 2144 $
//
//================================================================
//================================================================
// The M16C IAR C/EC++ Compiler places code and data into named
// segments which are referred to by the IAR XLINK Linker. The
// table below shows the available segments.
//
// SEGMENT REFERENCE
// =================
//
// Segment Description
// ------- -----------
// BITVARS Bit variables.
// CODE The program code.
// CSTACK The stack used by C or Embedded C++ programs.
// CSTART The startup code.
// DATA16_HEAP Heap data used by malloc and free. Used by CLib and DLib
// FAR_HEAP Heap used by malloc and free in DLib
// DATA20_HEAP Heap used by malloc and free in DLib
//
// x_AC Non-initialized located const objects.
// x_AN Non-initialized located non-const objects.
// x_C Constant data, including string literals.
// x_I Initialized data.
// x_ID Data that is copied to x_I by cstartup.
// x_N Uninitialized data.
// x_Z zero initialized data.
//
// Where x can be one of:
// DATA13 (Range: 0-0x1FFF)
// DATA16 (Range: 0-0xFFFF, except DATA16_ID)
// DATA20 (Range: 0-0xFFFFF)
// FAR (Range: 0-0xFFFFF)
//
// DIFUNCT Pointers to code, typically EC++ constructors
// FLIST Jump table for __tiny_func functions.
// INTVEC Contains reset and interrupt vectors.
// INTVEC1 Contains the fixed reset and interrupt vectors.
// ISTACK The stack used by interrupts and exceptions.
//================================================================
// Define CPU
-cm16c
//================================================================
// USER DEFINITIONS
// Please customize according to your preferences.
//================================================================
// Size of the user stack
// Uncomment for command line use
//-D_CSTACK_SIZE=100
// Size of the interrupt stack
// Uncomment for command line use
//-D_ISTACK_SIZE=40
// Size of the heap
// Uncomment for command line use
//-D_DATA16_HEAP_SIZE=400
//-D_FAR_HEAP_SIZE=400
//-D_DATA20_HEAP_SIZE=400
// Reserved memory
// Reservation of RAM and ROM memory not to be used by the application.
// Preset for use with the E8 emulator.
// NOTE! Set these values to zero to utilize the whole RAM and ROM memory.
-D_RESERVED_RAM_SIZE=80
-D_RESERVED_ROM_SIZE=800
//================================================================
// Memory Definitions
//================================================================
// Memory areas available for the application
-D_USER_RAM_BEGIN=(00400+_RESERVED_RAM_SIZE)
-D_USER_RAM_END=07FFF
-D_DATA_FLASH_BEGIN=0F000
-D_DATA_FLASH_END=0FFFF
-D_USER_ROM_BEGIN=(A0000+_RESERVED_ROM_SIZE)
-D_USER_ROM_END=FFFFF
// Relocatable "bit" segment (must be in near area).
// As BITVARS contains bit addresses, the address has to be recalculated.
// Byte address 400 --> 400 * 8 = bit address 2000
-D_BITVAR_BEGIN=2000 // address 400
-D_BITVAR_END=FFFF // address 1FFF
// ID code and OFS value written to ROM memory
-D_ID_CODE_1=FF
-D_ID_CODE_2=FF
-D_ID_CODE_3=FF
-D_ID_CODE_4=FF
-D_ID_CODE_5=FF
-D_ID_CODE_6=FF
-D_ID_CODE_7=FF
-D_OFS_VALUE=FF
// _OFS2_VALUE has to be defined. It is only used in some R8C devices and will
// not result in any additional code or data for any other device.
-D_OFS2_VALUE=FF
// =======================
// DATA13 RAM
// =======================
-Z(NEAR)DATA13_AN=0-01FFF
-Z(NEAR)DATA13_I=_USER_RAM_BEGIN-01FFF
-Z(NEAR)DATA13_Z,DATA13_N=_USER_RAM_BEGIN-01FFF
// Relocatable "bit" segment. As BITVARS contains bit addresses,
// the desired (byte) address has to be multiplied by 8.
-Z(BIT)BITVARS=_BITVAR_BEGIN-_BITVAR_END
// =======================
// DATA16 RAM
// =======================
// Set up interrupt stack
-Z(NEAR)ISTACK+_ISTACK_SIZE#_USER_RAM_BEGIN-_USER_RAM_END
// Set up user stack
-Z(NEAR)CSTACK+_CSTACK_SIZE#_USER_RAM_BEGIN-_USER_RAM_END
// Set up near heap
-Z(NEAR)DATA16_HEAP+_DATA16_HEAP_SIZE=_USER_RAM_BEGIN-_USER_RAM_END
// Near variables
-Z(NEAR)DATA16_I,DATA16_Z,DATA16_N,DATA16_AN=_USER_RAM_BEGIN-_USER_RAM_END
// User defined near DATA segments
// =======================
// DATA16 ROM
// =======================
// Data flash
-Z(CONST)DATA_FLASH=_DATA_FLASH_BEGIN-_DATA_FLASH_END
// Constant segments (in ROM), reachable for near pointers
// (Use declaration -Z(CONST)DATA16_C if near ROM exists)
// User defined near CONST segments
// =======================
// FAR/DATA20 RAM
// =======================
// Far and huge data segments
-Z(FAR)FAR_I,FAR_Z,FAR_N,FAR_AN=_USER_RAM_BEGIN-_USER_RAM_END
-Z(FAR)FAR_HEAP+_FAR_HEAP_SIZE=_USER_RAM_BEGIN-_USER_RAM_END
-Z(HUGE)DATA20_I,DATA20_Z,DATA20_N,DATA20_AN=_USER_RAM_BEGIN-_USER_RAM_END
-Z(HUGE)DATA20_HEAP+_DATA20_HEAP_SIZE=_USER_RAM_BEGIN-_USER_RAM_END
// User defined far & huge DATA segments
// =======================
// FAR/DATA20 ROM
// =======================
// Fixed interrupt vector table
-Z(CONST)INTVEC1=FFFDC-FFFFF
// Special page table
-Z(CONST)FLIST=FFE00-FFFDB
// Variable vector table (growing downwards from _USER_ROM_END)
// The added -1 is too assure that all vectors start at even
// addresses.
-Z(CONST)INTVEC=D0000-(_USER_ROM_END-1)
// Constant and initializer segments (in ROM)
-Z(FARCONST)FAR_ID=_USER_ROM_BEGIN-_USER_ROM_END
-Z(FARCONST)FAR_C=_USER_ROM_BEGIN-_USER_ROM_END
-Z(HUGECONST)DATA20_C,DATA20_ID,CHECKSUM=_USER_ROM_BEGIN-_USER_ROM_END
-Z(FARCONST)DATA16_ID,DATA13_ID,DIFUNCT=_USER_ROM_BEGIN-_USER_ROM_END
// User defined far & huge CONST segments
// CODE segments
// TINYFUNC code must be located above 0xF0000
-P(CODE)TINYFUNC=F0000-_USER_ROM_END
// Startup code
-P(CODE)CSTART=D0000-_USER_ROM_END
// "Regular" code
-P(CODE)CODE=_USER_ROM_BEGIN-_USER_ROM_END
// User defined CODE segments
// ========================
// IAR C library formatting
// ========================
// Uncomment for command line use
//-e_small_write=_formatted_write
//-e_medium_read=_formatted_read
// ========================
// Output files
// ========================
// Use the -O option to create one or more output files
// at the same link session. Formats flags, file name and
// extension is optional. Please un-comment the wanted
// output formats below.
//
// CAUTION: Do not combine other output formats with -rt (special
// UBROF for Terminal I/O in C-SPY). Output files are valid but
// contain code that expects to be run under C-SPY.
// Motorola output
//-Omotorola=.mot
// IEEE-695 output with format flags for the Renesas debugger
//-Oieee695,lbm=.x30
// ELF/DWARF output with format flags for the Renesas debugger
//-Oelf,spc=.elf
//================================================================
//
// IAR XLINK command file for the IAR C/C++ Compiler for
// Renesas M16C/R8C
//
// This is an example XLINK command file for use with the
// M30627FHP derivative.
//
// Derivative group: m16c 62p
//
//
// Usage: xlink your_file(s) -f this_file clm16c*.r48
//
// Copyright 2001-2008 IAR Systems AB.
//
// $Revision: 2144 $
//
//================================================================
//================================================================
// The M16C IAR C/EC++ Compiler places code and data into named
// segments which are referred to by the IAR XLINK Linker. The
// table below shows the available segments.
//
// SEGMENT REFERENCE
// =================
//
// Segment Description
// ------- -----------
// BITVARS Bit variables.
// CODE The program code.
// CSTACK The stack used by C or Embedded C++ programs.
// CSTART The startup code.
// DATA16_HEAP Heap data used by malloc and free. Used by CLib and DLib
// FAR_HEAP Heap used by malloc and free in DLib
// DATA20_HEAP Heap used by malloc and free in DLib
//
// x_AC Non-initialized located const objects.
// x_AN Non-initialized located non-const objects.
// x_C Constant data, including string literals.
// x_I Initialized data.
// x_ID Data that is copied to x_I by cstartup.
// x_N Uninitialized data.
// x_Z zero initialized data.
//
// Where x can be one of:
// DATA13 (Range: 0-0x1FFF)
// DATA16 (Range: 0-0xFFFF, except DATA16_ID)
// DATA20 (Range: 0-0xFFFFF)
// FAR (Range: 0-0xFFFFF)
//
// DIFUNCT Pointers to code, typically EC++ constructors
// FLIST Jump table for __tiny_func functions.
// INTVEC Contains reset and interrupt vectors.
// INTVEC1 Contains the fixed reset and interrupt vectors.
// ISTACK The stack used by interrupts and exceptions.
//================================================================
// Define CPU
-cm16c
//================================================================
// USER DEFINITIONS
// Please customize according to your preferences.
//================================================================
// Size of the user stack
// Uncomment for command line use
//-D_CSTACK_SIZE=100
// Size of the interrupt stack
// Uncomment for command line use
//-D_ISTACK_SIZE=40
// Size of the heap
// Uncomment for command line use
//-D_DATA16_HEAP_SIZE=400
//-D_FAR_HEAP_SIZE=400
//-D_DATA20_HEAP_SIZE=400
// Reserved memory
// Reservation of RAM and ROM memory not to be used by the application.
// Preset for use with the E8 emulator.
// NOTE! Set these values to zero to utilize the whole RAM and ROM memory.
-D_RESERVED_RAM_SIZE=80
-D_RESERVED_ROM_SIZE=800
//================================================================
// Memory Definitions
//================================================================
// Memory areas available for the application
-D_USER_RAM_BEGIN=(00400+_RESERVED_RAM_SIZE)
-D_USER_RAM_END=07FFF
-D_DATA_FLASH_BEGIN=0F000
-D_DATA_FLASH_END=0FFFF
-D_USER_ROM_BEGIN=(A0000+_RESERVED_ROM_SIZE)
-D_USER_ROM_END=FFFFF
// Relocatable "bit" segment (must be in near area).
// As BITVARS contains bit addresses, the address has to be recalculated.
// Byte address 400 --> 400 * 8 = bit address 2000
-D_BITVAR_BEGIN=2000 // address 400
-D_BITVAR_END=FFFF // address 1FFF
// ID code and OFS value written to ROM memory
-D_ID_CODE_1=FF
-D_ID_CODE_2=FF
-D_ID_CODE_3=FF
-D_ID_CODE_4=FF
-D_ID_CODE_5=FF
-D_ID_CODE_6=FF
-D_ID_CODE_7=FF
-D_OFS_VALUE=FF
// _OFS2_VALUE has to be defined. It is only used in some R8C devices and will
// not result in any additional code or data for any other device.
-D_OFS2_VALUE=FF
// =======================
// DATA13 RAM
// =======================
-Z(NEAR)DATA13_AN=0-01FFF
-Z(NEAR)DATA13_I=_USER_RAM_BEGIN-01FFF
-Z(NEAR)DATA13_Z,DATA13_N=_USER_RAM_BEGIN-01FFF
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bsp/mini2440/Readme
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Documents here
Documents here
http://www.rt-thread.org/dokuwiki/doku.php?id=s3c2440
\ No newline at end of file
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Bugs are now managed in the SDL bug tracker, here:
http://bugzilla.libsdl.org/
You may report bugs there, and search to see if a given issue has already
been reported, discussed, and maybe even fixed.
You may also find help at the SDL mailing list. Subscription information:
http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
Bug reports are welcome here, but we really appreciate if you use Bugzilla, as
bugs discussed on the mailing list may be forgotten or missed.
Bugs are now managed in the SDL bug tracker, here:
http://bugzilla.libsdl.org/
You may report bugs there, and search to see if a given issue has already
been reported, discussed, and maybe even fixed.
You may also find help at the SDL mailing list. Subscription information:
http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
Bug reports are welcome here, but we really appreciate if you use Bugzilla, as
bugs discussed on the mailing list may be forgotten or missed.
bsp/simulator/SDL/COPYING
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GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
END OF TERMS AND CONDITIONS
bsp/simulator/SDL/README
浏览文件 @ 3bab79a7
Simple DirectMedia Layer
(SDL)
Version 1.2
---
http://www.libsdl.org/
This is the Simple DirectMedia Layer, a general API that provides low
level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL,
and 2D framebuffer across multiple platforms.
The current version supports Linux, Windows CE/95/98/ME/XP/Vista, BeOS,
MacOS Classic, Mac OS X, FreeBSD, NetBSD, OpenBSD, BSD/OS, Solaris, IRIX,
and QNX. The code contains support for Dreamcast, Atari, AIX, OSF/Tru64,
RISC OS, SymbianOS, Nintendo DS, and OS/2, but these are not officially
supported.
SDL is written in C, but works with C++ natively, and has bindings to
several other languages, including Ada, C#, Eiffel, Erlang, Euphoria,
Guile, Haskell, Java, Lisp, Lua, ML, Objective C, Pascal, Perl, PHP,
Pike, Pliant, Python, Ruby, and Smalltalk.
This library is distributed under GNU LGPL version 2, which can be
found in the file "COPYING". This license allows you to use SDL
freely in commercial programs as long as you link with the dynamic
library.
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
The header files and test programs are well commented and always up to date.
More documentation is available in HTML format in "docs/index.html", and
a documentation wiki is available online at:
http://www.libsdl.org/cgi/docwiki.cgi
The test programs in the "test" subdirectory are in the public domain.
Frequently asked questions are answered online:
http://www.libsdl.org/faq.php
If you need help with the library, or just want to discuss SDL related
issues, you can join the developers mailing list:
http://www.libsdl.org/mailing-list.php
Enjoy!
Sam Lantinga (slouken@libsdl.org)
Simple DirectMedia Layer
(SDL)
Version 1.2
---
http://www.libsdl.org/
This is the Simple DirectMedia Layer, a general API that provides low
level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL,
and 2D framebuffer across multiple platforms.
The current version supports Linux, Windows CE/95/98/ME/XP/Vista, BeOS,
MacOS Classic, Mac OS X, FreeBSD, NetBSD, OpenBSD, BSD/OS, Solaris, IRIX,
and QNX. The code contains support for Dreamcast, Atari, AIX, OSF/Tru64,
RISC OS, SymbianOS, Nintendo DS, and OS/2, but these are not officially
supported.
SDL is written in C, but works with C++ natively, and has bindings to
several other languages, including Ada, C#, Eiffel, Erlang, Euphoria,
Guile, Haskell, Java, Lisp, Lua, ML, Objective C, Pascal, Perl, PHP,
Pike, Pliant, Python, Ruby, and Smalltalk.
This library is distributed under GNU LGPL version 2, which can be
found in the file "COPYING". This license allows you to use SDL
freely in commercial programs as long as you link with the dynamic
library.
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
The header files and test programs are well commented and always up to date.
More documentation is available in HTML format in "docs/index.html", and
a documentation wiki is available online at:
http://www.libsdl.org/cgi/docwiki.cgi
The test programs in the "test" subdirectory are in the public domain.
Frequently asked questions are answered online:
http://www.libsdl.org/faq.php
If you need help with the library, or just want to discuss SDL related
issues, you can join the developers mailing list:
http://www.libsdl.org/mailing-list.php
Enjoy!
Sam Lantinga (slouken@libsdl.org)
bsp/simulator/SDL/WhatsNew
浏览文件 @ 3bab79a7
This is a list of API changes in SDL's version history.
Version 1.0:
1.2.14:
Added cast macros for correct usage with C++:
SDL_reinterpret_cast(type, expression)
SDL_static_cast(type, expression)
Added SDL_VIDEO_FULLSCREEN_DISPLAY as a preferred synonym for
SDL_VIDEO_FULLSCREEN_HEAD on X11.
Added SDL_DISABLE_LOCK_KEYS environment variable to enable normal
up/down events for Caps-Lock and Num-Lock keys.
1.2.13:
Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants.
1.2.12:
Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling
of the screensaver on Mac OS X and X11.
1.2.10:
If SDL_OpenAudio() is passed zero for the desired format
fields, the following environment variables will be used
to fill them in:
SDL_AUDIO_FREQUENCY
SDL_AUDIO_FORMAT
SDL_AUDIO_CHANNELS
SDL_AUDIO_SAMPLES
If an environment variable is not specified, it will be set
to a reasonable default value.
Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment
variable, currently supported on X11 Xinerama configurations.
Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications.
Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration.
Added current_w and current_h to the SDL_VideoInfo structure,
which is set to the desktop resolution during video intialization,
and then set to the current resolution when a video mode is set.
SDL_SetVideoMode() now accepts 0 for width or height and will use
the current video mode (or the desktop mode if no mode has been set.)
Added SDL_GetKeyRepeat()
Added SDL_config.h, with defaults for various build environments.
1.2.7:
Added CPU feature detection functions to SDL_cpuinfo.h:
SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(),
SDL_HasAltiVec()
Added function to create RWops from const memory: SDL_RWFromConstMem()
1.2.6:
Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject()
Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA
1.2.5:
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
1.2.0:
Added SDL_VIDEOEXPOSE event to signal that the screen needs to
be redrawn. This is currently only delivered to OpenGL windows
on X11, though it may be delivered in the future when the video
memory is lost under DirectX.
1.1.8:
You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
that has no title bar or frame decoration. Fullscreen video
modes automatically have this flag set.
Added a function to query the clipping rectangle for a surface:
void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
Added a function to query the current event filter:
SDL_EventFilter SDL_GetEventFilter(void)
If you pass -1 to SDL_ShowCursor(), it won't change the current
cursor visibility state, but will still return it.
SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
you can nest them as deep as you want, as long as each lock call
has a matching unlock call. The surface remains locked until the
last matching unlock call.
Note that you may not blit to or from a locked surface.
1.1.7:
The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
arrays of Uint16 values instead of Uint8 values. For the most part,
you can just take your old values and shift them up 8 bits to get
new correct values for your gamma ramps.
You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
and SDL will try to RLE accelerate colorkey and alpha blits in the
resulting surface.
1.1.6:
Added a function to return the thread ID of a specific thread:
Uint32 SDL_GetThreadID(SDL_Thread *thread)
If 'thread' is NULL, this function returns the id for this thread.
1.1.5:
The YUV overlay structure has been changed to use an array of
pitches and pixels representing the planes of a YUV image, to
better enable hardware acceleration. The YV12 and IYUV formats
each have three planes, corresponding to the Y, U, and V portions
of the image, while packed pixel YUV formats just have one plane.
For palettized mode (8bpp), the screen colormap is now split in
a physical and a logical palette. The physical palette determines
what colours the screen pixels will get when displayed, and the
logical palette controls the mapping from blits to/from the screen.
A new function, SDL_SetPalette() has been added to change
logical and physical palettes separately. SDL_SetColors() works
just as before, and is equivalent to calling SDL_SetPalette() with
a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
SDL_BlitSurface() no longer modifies the source rectangle, only the
destination rectangle. The width/height members of the destination
rectangle are ignored, only the position is used.
The old source clipping function SDL_SetClipping() has been replaced
with a more useful function to set the destination clipping rectangle:
SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
Added a function to see what subsystems have been initialized:
Uint32 SDL_WasInit(Uint32 flags)
The Big Alpha Flip: SDL now treats alpha as opacity like everybody
else, and not as transparency:
A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
Values between 0 and 255 vary from fully transparent to fully opaque.
New functions:
SDL_DisplayFormatAlpha()
Returns a surface converted to a format with alpha-channel
that can be blit efficiently to the screen. (In other words,
like SDL_DisplayFormat() but the resulting surface has
an alpha channel.) This is useful for surfaces with alpha.
SDL_MapRGBA()
Works as SDL_MapRGB() but takes an additional alpha parameter.
SDL_GetRGBA()
Works as SDL_GetRGB() but also returns the alpha value
(SDL_ALPHA_OPAQUE for formats without an alpha channel)
Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
the [0..255] interval. Previously, SDL_GetRGB() would return
(0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
(N.B.: This is broken for bit fields < 3 bits.)
SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
SDL_SetAlpha() can now be used for both setting the per-surface
alpha, using the new way of thinking of alpha, and also to enable
and disable per-pixel alpha blending for surfaces with an alpha
channel:
To disable alpha blending:
SDL_SetAlpha(surface, 0, 0);
To re-enable alpha blending:
SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
Surfaces with an alpha channel have blending enabled by default.
SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
RLE acceleration of blits, just as like with SDL_SetColorKey().
This flag can be set for both surfaces with an alpha channel
and surfaces with an alpha value set by SDL_SetAlpha().
As always, RLE surfaces must be locked before pixel access is
allowed, and unlocked before any other SDL operations are done
on it.
The blit semantics for surfaces with and without alpha and colorkey
have now been defined:
RGBA->RGB:
SDL_SRCALPHA set:
alpha-blend (using alpha-channel).
SDL_SRCCOLORKEY ignored.
SDL_SRCALPHA not set:
copy RGB.
if SDL_SRCCOLORKEY set, only copy the pixels matching the
RGB values of the source colour key, ignoring alpha in the
comparison.
RGB->RGBA:
SDL_SRCALPHA set:
alpha-blend (using the source per-surface alpha value);
set destination alpha to opaque.
SDL_SRCALPHA not set:
copy RGB, set destination alpha to opaque.
both:
if SDL_SRCCOLORKEY set, only copy the pixels matching the
source colour key.
RGBA->RGBA:
SDL_SRCALPHA set:
alpha-blend (using the source alpha channel) the RGB values;
leave destination alpha untouched. [Note: is this correct?]
SDL_SRCCOLORKEY ignored.
SDL_SRCALPHA not set:
copy all of RGBA to the destination.
if SDL_SRCCOLORKEY set, only copy the pixels matching the
RGB values of the source colour key, ignoring alpha in the
comparison.
RGB->RGB:
SDL_SRCALPHA set:
alpha-blend (using the source per-surface alpha value).
SDL_SRCALPHA not set:
copy RGB.
both:
if SDL_SRCCOLORKEY set, only copy the pixels matching the
source colour key.
As a special case, blits from surfaces with per-surface alpha
value of 128 (50% transparency) are optimised and much faster
than other alpha values. This does not apply to surfaces with
alpha channels (per-pixel alpha).
New functions for manipulating the gamma of the display have
been added:
int SDL_SetGamma(float red, float green, float blue);
int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
Gamma ramps are tables with 256 entries which map the screen color
components into actually displayed colors. For an example of
implementing gamma correction and gamma fades, see test/testgamma.c
Gamma control is not supported on all hardware.
1.1.4:
The size of the SDL_CDtrack structure changed from 8 to 12 bytes
as the size of the length member was extended to 32 bits.
You can now use SDL for 2D blitting with a GL mode by passing the
SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
32 bpp, and the data in the framebuffer is put into the GL scene
when you call SDL_UpdateRects(), and the scene will be visible
when you call SDL_GL_SwapBuffers().
Run the "testgl" test program with the -logo command line option
to see an example of this blending of 2D and 3D in SDL.
1.1.3:
Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
Added resizable window support - just add SDL_RESIZABLE to the
SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
See SDL_events.h for details on the new SDL_ResizeEvent structure.
Added condition variable support, based on mutexes and semaphores.
SDL_CreateCond()
SDL_DestroyCond()
SDL_CondSignal()
SDL_CondBroadcast()
SDL_CondWait()
SDL_CondTimedWait()
The new function prototypes are in SDL_mutex.h
Added counting semaphore support, based on the mutex primitive.
SDL_CreateSemaphore()
SDL_DestroySemaphore()
SDL_SemWait()
SDL_SemTryWait()
SDL_SemWaitTimeout()
SDL_SemPost()
SDL_SemValue()
The new function prototypes are in SDL_mutex.h
Added support for asynchronous blitting. To take advantage of this,
you must set the SDL_ASYNCBLIT flag when setting the video mode and
creating surfaces that you want accelerated in this way. You must
lock surfaces that have this flag set, and the lock will block until
any queued blits have completed.
Added YUV video overlay support.
The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
This function creates an overlay surface:
SDL_CreateYUVOverlay()
You must lock and unlock the overlay to get access to the data:
SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
You can then display the overlay:
SDL_DisplayYUVOverlay()
You must free the overlay when you are done using it:
SDL_FreeYUVOverlay()
See SDL_video.h for the full function prototypes.
The joystick hat position constants have been changed:
Old constant New constant
------------ ------------
0 SDL_HAT_CENTERED
1 SDL_HAT_UP
2 SDL_HAT_RIGHTUP
3 SDL_HAT_RIGHT
4 SDL_HAT_RIGHTDOWN
5 SDL_HAT_DOWN
6 SDL_HAT_LEFTDOWN
7 SDL_HAT_LEFT
8 SDL_HAT_LEFTUP
The new constants are bitmasks, so you can check for the
individual axes like this:
if ( hat_position & SDL_HAT_UP ) {
}
and you'll catch left-up, up, and right-up.
1.1.2:
Added multiple timer support:
SDL_AddTimer() and SDL_RemoveTimer()
SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
1.1.0:
Added initial OpenGL support.
First set GL attributes (such as RGB depth, alpha depth, etc.)
SDL_GL_SetAttribute()
Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
Perform all of your normal GL drawing.
Finally swap the buffers with the new SDL function:
SDL_GL_SwapBuffers()
See the new 'testgl' test program for an example of using GL with SDL.
You can load GL extension functions by using the function:
SDL_GL_LoadProcAddress()
Added functions to initialize and cleanup specific SDL subsystems:
SDL_InitSubSystem() and SDL_QuitSubSystem()
Added user-defined event type:
typedef struct {
Uint8 type;
int code;
void *data1;
void *data2;
} SDL_UserEvent;
This structure is in the "user" member of an SDL_Event.
Added a function to push events into the event queue:
SDL_PushEvent()
Example of using the new SDL user-defined events:
{
SDL_Event event;
event.type = SDL_USEREVENT;
event.user.code = my_event_code;
event.user.data1 = significant_data;
event.user.data2 = 0;
SDL_PushEvent(&event);
}
Added a function to get mouse deltas since last query:
SDL_GetRelativeMouseState()
Added a boolean datatype to SDL_types.h:
SDL_bool = { SDL_TRUE, SDL_FALSE }
Added a function to get the current audio status:
SDL_GetAudioState();
It returns one of:
SDL_AUDIO_STOPPED,
SDL_AUDIO_PLAYING,
SDL_AUDIO_PAUSED
Added an AAlib driver (ASCII Art) - by Stephane Peter.
1.0.6:
The input grab state is reset after each call to SDL_SetVideoMode().
The input is grabbed by default in fullscreen mode, and ungrabbed in
windowed mode. If you want to set input grab to a particular value,
you should set it after each call to SDL_SetVideoMode().
1.0.5:
Exposed SDL_AudioInit(), SDL_VideoInit()
Added SDL_AudioDriverName() and SDL_VideoDriverName()
Added new window manager function:
SDL_WM_ToggleFullScreen()
This is currently implemented only on Linux
The ALT-ENTER code has been removed - it's not appropriate for a
lib to bind keys when they aren't even emergency escape sequences.
ALT-ENTER functionality can be implemented with the following code:
int Handle_AltEnter(const SDL_Event *event)
{
if ( event->type == SDL_KEYDOWN ) {
if ( (event->key.keysym.sym == SDLK_RETURN) &&
(event->key.keysym.mod & KMOD_ALT) ) {
SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
return(0);
}
}
return(1);
}
SDL_SetEventFilter(Handle_AltEnter);
1.0.3:
Under X11, if you grab the input and hide the mouse cursor,
the mouse will go into a "relative motion" mode where you
will always get relative motion events no matter how far in
each direction you move the mouse - relative motion is not
bounded by the edges of the window (though the absolute values
of the mouse positions are clamped by the size of the window).
The SVGAlib, framebuffer console, and DirectInput drivers all
have this behavior naturally, and the GDI and BWindow drivers
never go into "relative motion" mode.
1.0.2:
Added a function to enable keyboard repeat:
SDL_EnableKeyRepeat()
Added a function to grab the mouse and keyboard input
SDL_WM_GrabInput()
Added a function to iconify the window.
SDL_WM_IconifyWindow()
If this function succeeds, the application will receive an event
signaling SDL_APPACTIVE event
1.0.1:
Added constants to SDL_audio.h for 16-bit native byte ordering:
AUDIO_U16SYS, AUDIO_S16SYS
1.0.0:
New public release
Version 0.11:
0.11.5:
A new function SDL_GetVideoSurface() has been added, and returns
a pointer to the current display surface.
SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
a new function SDL_CreateRGBSurfaceFrom() has been added to allow
creating an SDL surface from an existing pixel data buffer.
Added SDL_GetRGB() to the headers and documentation.
0.11.4:
SDL_SetLibraryPath() is no longer meaningful, and has been removed.
0.11.3:
A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
installing fatal signal handlers on operating systems that support
them.
Version 0.9:
0.9.15:
SDL_CreateColorCursor() has been removed. Color cursors should
be implemented as sprites, blitted by the application when the
cursor moves. To get smooth color cursor updates when the app
is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
allows you to handle the mouse motion in another thread from an
event filter function, but is currently only supported by Linux
and BeOS. Note that you'll have to protect the display surface
from multi-threaded access by using mutexes if you do this.
Thread-safe surface support has been removed from SDL.
This makes blitting somewhat faster, by removing SDL_MiddleBlit().
Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
You can make your surfaces thread-safe by allocating your own
mutex and making lock/unlock calls around accesses to your surface.
0.9.14:
SDL_GetMouseState() now takes pointers to int rather than Uint16.
If you set the SDL_WINDOWID environment variable under UNIX X11,
SDL will use that as the main window instead of creating it's own.
This is an unsupported extension to SDL, and not portable at all.
0.9.13:
Added a function SDL_SetLibraryPath() which can be used to specify
the directory containing the SDL dynamic libraries. This is useful
for commercial applications which ship with particular versions
of the libraries, and for security on multi-user systems.
If this function is not used, the default system directories are
searched using the native dynamic object loading mechanism.
In order to support C linkage under Visual C++, you must declare
main() without any return type:
main(int argc, char *argv[]) {
/* Do the program... */
return(0);
}
C++ programs should also return a value if compiled under VC++.
The blit_endian member of the SDL_VideoInfo struct has been removed.
SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
is now no longer any function to translate a keysym to a character.
The SDL_keysym structure has been extended with a 'scancode' and
'unicode' member. The 'scancode' is a hardware specific scancode
for the key that was pressed, and may be 0. The 'unicode' member
is a 16-bit UNICODE translation of the key that was pressed along
with any modifiers or compose keys that have been pressed.
If no UNICODE translation exists for the key, 'unicode' will be 0.
Added a function SDL_EnableUNICODE() to enable/disable UNICODE
translation of character keypresses. Translation defaults off.
To convert existing code to use the new API, change code which
uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
and change code which uses it to get the ASCII value of a sym to
use the 'unicode' member of the event keysym.
0.9.12:
There is partial support for 64-bit datatypes. I don't recommend
you use this if you have a choice, because 64-bit datatypes are not
supported on many platforms. On platforms for which it is supported,
the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
you can use the Uint64 and Sint64 datatypes.
Added functions to SDL_endian.h to support 64-bit datatypes:
SDL_SwapLE64(), SDL_SwapBE64(),
SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
A new member "len_ratio" has been added to the SDL_AudioCVT structure,
and allows you to determine either the original buffer length or the
converted buffer length, given the other.
A new function SDL_FreeWAV() has been added to the API to free data
allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since
the gcc compiled DLL uses a different heap than VC++ compiled apps.
SDL now has initial support for international keyboards using the
Latin character set.
If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
compile-time variable, or you can set the environment variable
"SDL_KEYBOARD" to a string identifying the keyboard mapping you desire.
The valid values for these variables can be found in SDL_keyboard.c
Full support for German and French keyboards under X11 is implemented.
0.9.11:
The THREADED_EVENTS compile-time define has been replaced with the
SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
SDL will create a separate thread to perform input event handling.
If this flag is passed to SDL_Init(), and the OS doesn't support
event handling in a separate thread, SDL_Init() will fail.
Be sure to add calls to SDL_Delay() in your main thread to allow
the OS to schedule your event thread, or it may starve, leading
to slow event delivery and/or dropped events.
Currently MacOS and Win32 do not support this flag, while BeOS
and Linux do support it. I recommend that your application only
use this flag if absolutely necessary.
The SDL thread function passed to SDL_CreateThread() now returns a
status. This status can be retrieved by passing a non-NULL pointer
as the 'status' argument to SDL_WaitThread().
The volume parameter to SDL_MixAudio() has been increased in range
from (0-8) to (0-128)
SDL now has a data source abstraction which can encompass a file,
an area of memory, or any custom object you can envision. It uses
these abstractions, SDL_RWops, in the endian read/write functions,
and the built-in WAV and BMP file loaders. This means you can load
WAV chunks from memory mapped files, compressed archives, network
pipes, or anything else that has a data read abstraction.
There are three built-in data source abstractions:
SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem()
along with a generic data source allocation function:
SDL_AllocRW()
These data sources can be used like stdio file pointers with the
following convenience functions:
SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose()
These functions are defined in the new header file "SDL_rwops.h"
The endian swapping functions have been turned into macros for speed
and SDL_CalculateEndian() has been removed. SDL_endian.h now defines
SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on
the endianness of the host system.
The endian read/write functions now take an SDL_RWops pointer
instead of a stdio FILE pointer, to support the new data source
abstraction.
The SDL_*LoadWAV() functions have been replaced with a single
SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's
first parameter, and a flag whether or not to automatically
free it as the second parameter. SDL_LoadWAV() is a macro for
backward compatibility and convenience:
SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced
with a single function that takes a SDL_RWops pointer as it's
first parameter, and a flag whether or not to automatically
free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP()
are macros for backward compatibility and convenience:
SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...);
SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...);
Note that these functions use SDL_RWseek() extensively, and should
not be used on pipes or other non-seekable data sources.
0.9.10:
The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been
extended to support multiple types of display drivers, as well as
safe access to the X11 display when THREADED_EVENTS is enabled.
The new structures are documented in the SDL_syswm.h header file.
Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard
should now work properly, as well as the "Windows" keys on US
keyboards.
The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab
instead of trying to open each block device on the system.
The CD must be listed in /etc/fstab as using the iso9660 filesystem.
On Linux, if you define THREADED_EVENTS at compile time, a separate
thread will be spawned to gather X events asynchronously from the
graphics updates. This hasn't been extensively tested, but it does
provide a means of handling keyboard and mouse input in a separate
thread from the graphics thread. (This is now enabled by default.)
A special access function SDL_PeepEvents() allows you to manipulate
the event queue in a thread-safe manner, including peeking at events,
removing events of a specified type, and adding new events of arbitrary
type to the queue (use the new 'user' member of the SDL_Event type).
If you use SDL_PeepEvents() to gather events, then the main graphics
thread needs to call SDL_PumpEvents() periodically to drive the event
loop and generate input events. This is not necessary if SDL has been
compiled with THREADED_EVENTS defined, but doesn't hurt.
A new function SDL_ThreadID() returns the identifier associated with
the current thread.
0.9.9:
The AUDIO_STEREO format flag has been replaced with a new 'channels'
member of the SDL_AudioSpec structure. The channels are 1 for mono
audio, and 2 for stereo audio. In the future more channels may be
supported for 3D surround sound.
The SDL_MixAudio() function now takes an additional volume parameter,
which should be set to SDL_MIX_MAXVOLUME for compatibility with the
original function.
The CD-ROM functions which take a 'cdrom' parameter can now be
passed NULL, and will act on the last successfully opened CD-ROM.
0.9.8:
No changes, bugfixes only.
0.9.7:
No changes, bugfixes only.
0.9.6:
Added a fast rectangle fill function: SDL_FillRect()
Addition of a useful function for getting info on the video hardware:
const SDL_VideoInfo *SDL_GetVideoInfo(void)
This function replaces SDL_GetDisplayFormat().
Initial support for double-buffering:
Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode()
Update the screen with a new function: SDL_Flip()
SDL_AllocSurface() takes two new flags:
SDL_SRCCOLORKEY means that the surface will be used for colorkey blits
and if the hardware supports hardware acceleration of colorkey blits
between two surfaces in video memory, to place the surface in video
memory if possible, otherwise it will be placed in system memory.
SDL_SRCALPHA means that the surface will be used for alpha blits and
if the hardware supports hardware acceleration of alpha blits between
two surfaces in video memory, to place the surface in video memory
if possible, otherwise it will be placed in system memory.
SDL_HWSURFACE now means that the surface will be created with the
same format as the display surface, since having surfaces in video
memory is only useful for fast blitting to the screen, and you can't
blit surfaces with different surface formats in video memory.
0.9.5:
You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume
that the icon consists of the entire image.
SDL_LowerBlit() is back -- but don't use it on the display surface.
It is exactly the same as SDL_MiddleBlit(), but doesn't check for
thread safety.
Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take
a FILE pointer instead of a file name.
Added CD-ROM audio control API:
SDL_CDNumDrives()
SDL_CDName()
SDL_CDOpen()
SDL_CDStatus()
SDL_CDPlayTracks()
SDL_CDPlay()
SDL_CDPause()
SDL_CDResume()
SDL_CDStop()
SDL_CDEject()
SDL_CDClose()
0.9.4:
No changes, bugfixes only.
0.9.3:
Mouse motion event now includes relative motion information:
Sint16 event->motion.xrel, Sint16 event->motion.yrel
X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT
(Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
0.9.2:
No changes, bugfixes only.
0.9.1:
Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
automatically mapped on blit.
0.8.0:
SDL stable release
This is a list of API changes in SDL's version history.
Version 1.0:
1.2.14:
Added cast macros for correct usage with C++:
SDL_reinterpret_cast(type, expression)
SDL_static_cast(type, expression)
Added SDL_VIDEO_FULLSCREEN_DISPLAY as a preferred synonym for
SDL_VIDEO_FULLSCREEN_HEAD on X11.
Added SDL_DISABLE_LOCK_KEYS environment variable to enable normal
up/down events for Caps-Lock and Num-Lock keys.
1.2.13:
Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants.
1.2.12:
Added SDL_VIDEO_ALLOW_SCREENSAVER to override SDL's disabling
of the screensaver on Mac OS X and X11.
1.2.10:
If SDL_OpenAudio() is passed zero for the desired format
fields, the following environment variables will be used
to fill them in:
SDL_AUDIO_FREQUENCY
SDL_AUDIO_FORMAT
SDL_AUDIO_CHANNELS
SDL_AUDIO_SAMPLES
If an environment variable is not specified, it will be set
to a reasonable default value.
Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment
variable, currently supported on X11 Xinerama configurations.
Added SDL_GL_SWAP_CONTROL to wait for vsync in OpenGL applications.
Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration.
Added current_w and current_h to the SDL_VideoInfo structure,
which is set to the desktop resolution during video intialization,
and then set to the current resolution when a video mode is set.
SDL_SetVideoMode() now accepts 0 for width or height and will use
the current video mode (or the desktop mode if no mode has been set.)
Added SDL_GetKeyRepeat()
Added SDL_config.h, with defaults for various build environments.
1.2.7:
Added CPU feature detection functions to SDL_cpuinfo.h:
SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(),
SDL_HasAltiVec()
Added function to create RWops from const memory: SDL_RWFromConstMem()
1.2.6:
Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject()
Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA
1.2.5:
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
1.2.0:
Added SDL_VIDEOEXPOSE event to signal that the screen needs to
be redrawn. This is currently only delivered to OpenGL windows
on X11, though it may be delivered in the future when the video
memory is lost under DirectX.
1.1.8:
You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
that has no title bar or frame decoration. Fullscreen video
modes automatically have this flag set.
Added a function to query the clipping rectangle for a surface:
void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
Added a function to query the current event filter:
SDL_EventFilter SDL_GetEventFilter(void)
If you pass -1 to SDL_ShowCursor(), it won't change the current
cursor visibility state, but will still return it.
SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
you can nest them as deep as you want, as long as each lock call
has a matching unlock call. The surface remains locked until the
last matching unlock call.
Note that you may not blit to or from a locked surface.
1.1.7:
The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
arrays of Uint16 values instead of Uint8 values. For the most part,
you can just take your old values and shift them up 8 bits to get
new correct values for your gamma ramps.
You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
and SDL will try to RLE accelerate colorkey and alpha blits in the
resulting surface.
1.1.6:
Added a function to return the thread ID of a specific thread:
Uint32 SDL_GetThreadID(SDL_Thread *thread)
If 'thread' is NULL, this function returns the id for this thread.
1.1.5:
The YUV overlay structure has been changed to use an array of
pitches and pixels representing the planes of a YUV image, to
better enable hardware acceleration. The YV12 and IYUV formats
each have three planes, corresponding to the Y, U, and V portions
of the image, while packed pixel YUV formats just have one plane.
For palettized mode (8bpp), the screen colormap is now split in
a physical and a logical palette. The physical palette determines
what colours the screen pixels will get when displayed, and the
logical palette controls the mapping from blits to/from the screen.
A new function, SDL_SetPalette() has been added to change
logical and physical palettes separately. SDL_SetColors() works
just as before, and is equivalent to calling SDL_SetPalette() with
a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
SDL_BlitSurface() no longer modifies the source rectangle, only the
destination rectangle. The width/height members of the destination
rectangle are ignored, only the position is used.
The old source clipping function SDL_SetClipping() has been replaced
with a more useful function to set the destination clipping rectangle:
SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
Added a function to see what subsystems have been initialized:
Uint32 SDL_WasInit(Uint32 flags)
The Big Alpha Flip: SDL now treats alpha as opacity like everybody
else, and not as transparency:
A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
Values between 0 and 255 vary from fully transparent to fully opaque.
New functions:
SDL_DisplayFormatAlpha()
Returns a surface converted to a format with alpha-channel
that can be blit efficiently to the screen. (In other words,
like SDL_DisplayFormat() but the resulting surface has
an alpha channel.) This is useful for surfaces with alpha.
SDL_MapRGBA()
Works as SDL_MapRGB() but takes an additional alpha parameter.
SDL_GetRGBA()
Works as SDL_GetRGB() but also returns the alpha value
(SDL_ALPHA_OPAQUE for formats without an alpha channel)
Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
the [0..255] interval. Previously, SDL_GetRGB() would return
(0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
(N.B.: This is broken for bit fields < 3 bits.)
SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
SDL_SetAlpha() can now be used for both setting the per-surface
alpha, using the new way of thinking of alpha, and also to enable
and disable per-pixel alpha blending for surfaces with an alpha
channel:
To disable alpha blending:
SDL_SetAlpha(surface, 0, 0);
To re-enable alpha blending:
SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
Surfaces with an alpha channel have blending enabled by default.
SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
RLE acceleration of blits, just as like with SDL_SetColorKey().
This flag can be set for both surfaces with an alpha channel
and surfaces with an alpha value set by SDL_SetAlpha().
As always, RLE surfaces must be locked before pixel access is
allowed, and unlocked before any other SDL operations are done
on it.
The blit semantics for surfaces with and without alpha and colorkey
have now been defined:
RGBA->RGB:
SDL_SRCALPHA set:
alpha-blend (using alpha-channel).
SDL_SRCCOLORKEY ignored.
SDL_SRCALPHA not set:
copy RGB.
if SDL_SRCCOLORKEY set, only copy the pixels matching the
RGB values of the source colour key, ignoring alpha in the
comparison.
RGB->RGBA:
SDL_SRCALPHA set:
alpha-blend (using the source per-surface alpha value);
set destination alpha to opaque.
SDL_SRCALPHA not set:
copy RGB, set destination alpha to opaque.
both:
if SDL_SRCCOLORKEY set, only copy the pixels matching the
source colour key.
RGBA->RGBA:
SDL_SRCALPHA set:
alpha-blend (using the source alpha channel) the RGB values;
leave destination alpha untouched. [Note: is this correct?]
SDL_SRCCOLORKEY ignored.
SDL_SRCALPHA not set:
copy all of RGBA to the destination.
if SDL_SRCCOLORKEY set, only copy the pixels matching the
RGB values of the source colour key, ignoring alpha in the
comparison.
RGB->RGB:
SDL_SRCALPHA set:
alpha-blend (using the source per-surface alpha value).
SDL_SRCALPHA not set:
copy RGB.
both:
if SDL_SRCCOLORKEY set, only copy the pixels matching the
source colour key.
As a special case, blits from surfaces with per-surface alpha
value of 128 (50% transparency) are optimised and much faster
than other alpha values. This does not apply to surfaces with
alpha channels (per-pixel alpha).
New functions for manipulating the gamma of the display have
been added:
int SDL_SetGamma(float red, float green, float blue);
int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
Gamma ramps are tables with 256 entries which map the screen color
components into actually displayed colors. For an example of
implementing gamma correction and gamma fades, see test/testgamma.c
Gamma control is not supported on all hardware.
1.1.4:
The size of the SDL_CDtrack structure changed from 8 to 12 bytes
as the size of the length member was extended to 32 bits.
You can now use SDL for 2D blitting with a GL mode by passing the
SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
32 bpp, and the data in the framebuffer is put into the GL scene
when you call SDL_UpdateRects(), and the scene will be visible
when you call SDL_GL_SwapBuffers().
Run the "testgl" test program with the -logo command line option
to see an example of this blending of 2D and 3D in SDL.
1.1.3:
Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
Added resizable window support - just add SDL_RESIZABLE to the
SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
See SDL_events.h for details on the new SDL_ResizeEvent structure.
Added condition variable support, based on mutexes and semaphores.
SDL_CreateCond()
SDL_DestroyCond()
SDL_CondSignal()
SDL_CondBroadcast()
SDL_CondWait()
SDL_CondTimedWait()
The new function prototypes are in SDL_mutex.h
Added counting semaphore support, based on the mutex primitive.
SDL_CreateSemaphore()
SDL_DestroySemaphore()
SDL_SemWait()
SDL_SemTryWait()
SDL_SemWaitTimeout()
SDL_SemPost()
SDL_SemValue()
The new function prototypes are in SDL_mutex.h
Added support for asynchronous blitting. To take advantage of this,
you must set the SDL_ASYNCBLIT flag when setting the video mode and
creating surfaces that you want accelerated in this way. You must
lock surfaces that have this flag set, and the lock will block until
any queued blits have completed.
Added YUV video overlay support.
The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
This function creates an overlay surface:
SDL_CreateYUVOverlay()
You must lock and unlock the overlay to get access to the data:
SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
You can then display the overlay:
SDL_DisplayYUVOverlay()
You must free the overlay when you are done using it:
SDL_FreeYUVOverlay()
See SDL_video.h for the full function prototypes.
The joystick hat position constants have been changed:
Old constant New constant
------------ ------------
0 SDL_HAT_CENTERED
1 SDL_HAT_UP
2 SDL_HAT_RIGHTUP
3 SDL_HAT_RIGHT
4 SDL_HAT_RIGHTDOWN
5 SDL_HAT_DOWN
6 SDL_HAT_LEFTDOWN
7 SDL_HAT_LEFT
8 SDL_HAT_LEFTUP
The new constants are bitmasks, so you can check for the
individual axes like this:
if ( hat_position & SDL_HAT_UP ) {
}
and you'll catch left-up, up, and right-up.
1.1.2:
Added multiple timer support:
SDL_AddTimer() and SDL_RemoveTimer()
SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
1.1.0:
Added initial OpenGL support.
First set GL attributes (such as RGB depth, alpha depth, etc.)
SDL_GL_SetAttribute()
Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
Perform all of your normal GL drawing.
Finally swap the buffers with the new SDL function:
SDL_GL_SwapBuffers()
See the new 'testgl' test program for an example of using GL with SDL.
You can load GL extension functions by using the function:
SDL_GL_LoadProcAddress()
Added functions to initialize and cleanup specific SDL subsystems:
SDL_InitSubSystem() and SDL_QuitSubSystem()
Added user-defined event type:
typedef struct {
Uint8 type;
int code;
void *data1;
void *data2;
} SDL_UserEvent;
This structure is in the "user" member of an SDL_Event.
Added a function to push events into the event queue:
SDL_PushEvent()
Example of using the new SDL user-defined events:
{
SDL_Event event;
event.type = SDL_USEREVENT;
event.user.code = my_event_code;
event.user.data1 = significant_data;
event.user.data2 = 0;
SDL_PushEvent(&event);
}
Added a function to get mouse deltas since last query:
SDL_GetRelativeMouseState()
Added a boolean datatype to SDL_types.h:
SDL_bool = { SDL_TRUE, SDL_FALSE }
Added a function to get the current audio status:
SDL_GetAudioState();
It returns one of:
SDL_AUDIO_STOPPED,
SDL_AUDIO_PLAYING,
SDL_AUDIO_PAUSED
Added an AAlib driver (ASCII Art) - by Stephane Peter.
1.0.6:
The input grab state is reset after each call to SDL_SetVideoMode().
The input is grabbed by default in fullscreen mode, and ungrabbed in
windowed mode. If you want to set input grab to a particular value,
you should set it after each call to SDL_SetVideoMode().
1.0.5:
Exposed SDL_AudioInit(), SDL_VideoInit()
Added SDL_AudioDriverName() and SDL_VideoDriverName()
Added new window manager function:
SDL_WM_ToggleFullScreen()
This is currently implemented only on Linux
The ALT-ENTER code has been removed - it's not appropriate for a
lib to bind keys when they aren't even emergency escape sequences.
ALT-ENTER functionality can be implemented with the following code:
int Handle_AltEnter(const SDL_Event *event)
{
if ( event->type == SDL_KEYDOWN ) {
if ( (event->key.keysym.sym == SDLK_RETURN) &&
(event->key.keysym.mod & KMOD_ALT) ) {
SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
return(0);
}
}
return(1);
}
SDL_SetEventFilter(Handle_AltEnter);
1.0.3:
Under X11, if you grab the input and hide the mouse cursor,
the mouse will go into a "relative motion" mode where you
will always get relative motion events no matter how far in
each direction you move the mouse - relative motion is not
bounded by the edges of the window (though the absolute values
of the mouse positions are clamped by the size of the window).
The SVGAlib, framebuffer console, and DirectInput drivers all
have this behavior naturally, and the GDI and BWindow drivers
never go into "relative motion" mode.
1.0.2:
Added a function to enable keyboard repeat:
SDL_EnableKeyRepeat()
Added a function to grab the mouse and keyboard input
SDL_WM_GrabInput()
Added a function to iconify the window.
SDL_WM_IconifyWindow()
If this function succeeds, the application will receive an event
signaling SDL_APPACTIVE event
1.0.1:
Added constants to SDL_audio.h for 16-bit native byte ordering:
AUDIO_U16SYS, AUDIO_S16SYS
1.0.0:
New public release
Version 0.11:
0.11.5:
A new function SDL_GetVideoSurface() has been added, and returns
a pointer to the current display surface.
SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
a new function SDL_CreateRGBSurfaceFrom() has been added to allow
creating an SDL surface from an existing pixel data buffer.
Added SDL_GetRGB() to the headers and documentation.
0.11.4:
SDL_SetLibraryPath() is no longer meaningful, and has been removed.
0.11.3:
A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
installing fatal signal handlers on operating systems that support
them.
Version 0.9:
0.9.15:
SDL_CreateColorCursor() has been removed. Color cursors should
be implemented as sprites, blitted by the application when the
cursor moves. To get smooth color cursor updates when the app
is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
allows you to handle the mouse motion in another thread from an
event filter function, but is currently only supported by Linux
and BeOS. Note that you'll have to protect the display surface
from multi-threaded access by using mutexes if you do this.
Thread-safe surface support has been removed from SDL.
This makes blitting somewhat faster, by removing SDL_MiddleBlit().
Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
You can make your surfaces thread-safe by allocating your own
mutex and making lock/unlock calls around accesses to your surface.
0.9.14:
SDL_GetMouseState() now takes pointers to int rather than Uint16.
If you set the SDL_WINDOWID environment variable under UNIX X11,
SDL will use that as the main window instead of creating it's own.
This is an unsupported extension to SDL, and not portable at all.
0.9.13:
Added a function SDL_SetLibraryPath() which can be used to specify
the directory containing the SDL dynamic libraries. This is useful
for commercial applications which ship with particular versions
of the libraries, and for security on multi-user systems.
If this function is not used, the default system directories are
searched using the native dynamic object loading mechanism.
In order to support C linkage under Visual C++, you must declare
main() without any return type:
main(int argc, char *argv[]) {
/* Do the program... */
return(0);
}
C++ programs should also return a value if compiled under VC++.
The blit_endian member of the SDL_VideoInfo struct has been removed.
SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
is now no longer any function to translate a keysym to a character.
The SDL_keysym structure has been extended with a 'scancode' and
'unicode' member. The 'scancode' is a hardware specific scancode
for the key that was pressed, and may be 0. The 'unicode' member
is a 16-bit UNICODE translation of the key that was pressed along
with any modifiers or compose keys that have been pressed.
If no UNICODE translation exists for the key, 'unicode' will be 0.
Added a function SDL_EnableUNICODE() to enable/disable UNICODE
translation of character keypresses. Translation defaults off.
To convert existing code to use the new API, change code which
uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
and change code which uses it to get the ASCII value of a sym to
use the 'unicode' member of the event keysym.
0.9.12:
There is partial support for 64-bit datatypes. I don't recommend
you use this if you have a choice, because 64-bit datatypes are not
supported on many platforms. On platforms for which it is supported,
the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
you can use the Uint64 and Sint64 datatypes.
Added functions to SDL_endian.h to support 64-bit datatypes:
SDL_SwapLE64(), SDL_SwapBE64(),
SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
A new member "len_ratio" has been added to the SDL_AudioCVT structure,
and allows you to determine either the original buffer length or the
converted buffer length, given the other.
A new function SDL_FreeWAV() has been added to the API to free data
allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since
the gcc compiled DLL uses a different heap than VC++ compiled apps.
SDL now has initial support for international keyboards using the
Latin character set.
If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
compile-time variable, or you can set the environment variable
"SDL_KEYBOARD" to a string identifying the keyboard mapping you desire.
The valid values for these variables can be found in SDL_keyboard.c
Full support for German and French keyboards under X11 is implemented.
0.9.11:
The THREADED_EVENTS compile-time define has been replaced with the
SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
SDL will create a separate thread to perform input event handling.
If this flag is passed to SDL_Init(), and the OS doesn't support
event handling in a separate thread, SDL_Init() will fail.
Be sure to add calls to SDL_Delay() in your main thread to allow
the OS to schedule your event thread, or it may starve, leading
to slow event delivery and/or dropped events.
Currently MacOS and Win32 do not support this flag, while BeOS
and Linux do support it. I recommend that your application only
use this flag if absolutely necessary.
The SDL thread function passed to SDL_CreateThread() now returns a
status. This status can be retrieved by passing a non-NULL pointer
as the 'status' argument to SDL_WaitThread().
The volume parameter to SDL_MixAudio() has been increased in range
from (0-8) to (0-128)
SDL now has a data source abstraction which can encompass a file,
an area of memory, or any custom object you can envision. It uses
these abstractions, SDL_RWops, in the endian read/write functions,
and the built-in WAV and BMP file loaders. This means you can load
WAV chunks from memory mapped files, compressed archives, network
pipes, or anything else that has a data read abstraction.
There are three built-in data source abstractions:
SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem()
along with a generic data source allocation function:
SDL_AllocRW()
These data sources can be used like stdio file pointers with the
following convenience functions:
SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose()
These functions are defined in the new header file "SDL_rwops.h"
The endian swapping functions have been turned into macros for speed
and SDL_CalculateEndian() has been removed. SDL_endian.h now defines
SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on
the endianness of the host system.
The endian read/write functions now take an SDL_RWops pointer
instead of a stdio FILE pointer, to support the new data source
abstraction.
The SDL_*LoadWAV() functions have been replaced with a single
SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's
first parameter, and a flag whether or not to automatically
free it as the second parameter. SDL_LoadWAV() is a macro for
backward compatibility and convenience:
SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced
with a single function that takes a SDL_RWops pointer as it's
first parameter, and a flag whether or not to automatically
free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP()
are macros for backward compatibility and convenience:
SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...);
SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...);
Note that these functions use SDL_RWseek() extensively, and should
not be used on pipes or other non-seekable data sources.
0.9.10:
The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been
extended to support multiple types of display drivers, as well as
safe access to the X11 display when THREADED_EVENTS is enabled.
The new structures are documented in the SDL_syswm.h header file.
Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard
should now work properly, as well as the "Windows" keys on US
keyboards.
The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab
instead of trying to open each block device on the system.
The CD must be listed in /etc/fstab as using the iso9660 filesystem.
On Linux, if you define THREADED_EVENTS at compile time, a separate
thread will be spawned to gather X events asynchronously from the
graphics updates. This hasn't been extensively tested, but it does
provide a means of handling keyboard and mouse input in a separate
thread from the graphics thread. (This is now enabled by default.)
A special access function SDL_PeepEvents() allows you to manipulate
the event queue in a thread-safe manner, including peeking at events,
removing events of a specified type, and adding new events of arbitrary
type to the queue (use the new 'user' member of the SDL_Event type).
If you use SDL_PeepEvents() to gather events, then the main graphics
thread needs to call SDL_PumpEvents() periodically to drive the event
loop and generate input events. This is not necessary if SDL has been
compiled with THREADED_EVENTS defined, but doesn't hurt.
A new function SDL_ThreadID() returns the identifier associated with
the current thread.
0.9.9:
The AUDIO_STEREO format flag has been replaced with a new 'channels'
member of the SDL_AudioSpec structure. The channels are 1 for mono
audio, and 2 for stereo audio. In the future more channels may be
supported for 3D surround sound.
The SDL_MixAudio() function now takes an additional volume parameter,
which should be set to SDL_MIX_MAXVOLUME for compatibility with the
original function.
The CD-ROM functions which take a 'cdrom' parameter can now be
passed NULL, and will act on the last successfully opened CD-ROM.
0.9.8:
No changes, bugfixes only.
0.9.7:
No changes, bugfixes only.
0.9.6:
Added a fast rectangle fill function: SDL_FillRect()
Addition of a useful function for getting info on the video hardware:
const SDL_VideoInfo *SDL_GetVideoInfo(void)
This function replaces SDL_GetDisplayFormat().
Initial support for double-buffering:
Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode()
Update the screen with a new function: SDL_Flip()
SDL_AllocSurface() takes two new flags:
SDL_SRCCOLORKEY means that the surface will be used for colorkey blits
and if the hardware supports hardware acceleration of colorkey blits
between two surfaces in video memory, to place the surface in video
memory if possible, otherwise it will be placed in system memory.
SDL_SRCALPHA means that the surface will be used for alpha blits and
if the hardware supports hardware acceleration of alpha blits between
two surfaces in video memory, to place the surface in video memory
if possible, otherwise it will be placed in system memory.
SDL_HWSURFACE now means that the surface will be created with the
same format as the display surface, since having surfaces in video
memory is only useful for fast blitting to the screen, and you can't
blit surfaces with different surface formats in video memory.
0.9.5:
You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume
that the icon consists of the entire image.
SDL_LowerBlit() is back -- but don't use it on the display surface.
It is exactly the same as SDL_MiddleBlit(), but doesn't check for
thread safety.
Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take
a FILE pointer instead of a file name.
Added CD-ROM audio control API:
SDL_CDNumDrives()
SDL_CDName()
SDL_CDOpen()
SDL_CDStatus()
SDL_CDPlayTracks()
SDL_CDPlay()
SDL_CDPause()
SDL_CDResume()
SDL_CDStop()
SDL_CDEject()
SDL_CDClose()
0.9.4:
No changes, bugfixes only.
0.9.3:
Mouse motion event now includes relative motion information:
Sint16 event->motion.xrel, Sint16 event->motion.yrel
X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT
(Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
0.9.2:
No changes, bugfixes only.
0.9.1:
Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
automatically mapped on blit.
0.8.0:
SDL stable release
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