annotate WhatsNew @ 1521:9b9212e4810c

CFLAGS are separate from EXTRA_CFLAGS Fixed iconv.h detection on Cygwin32
author Sam Lantinga <slouken@libsdl.org>
date Tue, 14 Mar 2006 02:46:26 +0000
parents 1ff64ad478b2
children 8d9bb0cf2c2a
rev   line source
0
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1
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2 This is a list of API changes in SDL's version history.
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3
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4 Version 1.0:
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5
1507
1ff64ad478b2 Fixed bug #112
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6 1.2.10:
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7 Added SDL_GetKeyRepeat()
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8 Added SDL_config.h, with defaults for various build environments.
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9
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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10 1.2.7:
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11 Added CPU feature detection functions to SDL_cpuinfo.h:
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12 SDL_HasRDTSC(), SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE(),
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13 SDL_HasAltiVec()
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14 Added function to create RWops from const memory: SDL_RWFromConstMem()
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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15
648
12a21d82a060 Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
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16 1.2.6:
12a21d82a060 Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
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17 Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject()
12a21d82a060 Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
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18
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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19 Added SDL_GL_MULTISAMPLEBUFFERS and SDL_GL_MULTISAMPLESAMPLES for FSAA
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9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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20
451
24edec3cafe4 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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21 1.2.5:
24edec3cafe4 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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22 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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23
24edec3cafe4 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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24 Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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25
0
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26 1.2.0:
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27 Added SDL_VIDEOEXPOSE event to signal that the screen needs to
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28 be redrawn. This is currently only delivered to OpenGL windows
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29 on X11, though it may be delivered in the future when the video
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30 memory is lost under DirectX.
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31
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32 1.1.8:
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33 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
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34 that has no title bar or frame decoration. Fullscreen video
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35 modes automatically have this flag set.
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36
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37 Added a function to query the clipping rectangle for a surface:
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38 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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39
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40 Added a function to query the current event filter:
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41 SDL_EventFilter SDL_GetEventFilter(void)
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42
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43 If you pass -1 to SDL_ShowCursor(), it won't change the current
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44 cursor visibility state, but will still return it.
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45
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46 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
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47 you can nest them as deep as you want, as long as each lock call
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48 has a matching unlock call. The surface remains locked until the
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49 last matching unlock call.
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50
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51 Note that you may not blit to or from a locked surface.
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52
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53 1.1.7:
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54 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
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55 arrays of Uint16 values instead of Uint8 values. For the most part,
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56 you can just take your old values and shift them up 8 bits to get
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57 new correct values for your gamma ramps.
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58
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59 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
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60 and SDL will try to RLE accelerate colorkey and alpha blits in the
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61 resulting surface.
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62
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63 1.1.6:
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64 Added a function to return the thread ID of a specific thread:
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65 Uint32 SDL_GetThreadID(SDL_Thread *thread)
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66 If 'thread' is NULL, this function returns the id for this thread.
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67
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68 1.1.5:
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69 The YUV overlay structure has been changed to use an array of
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70 pitches and pixels representing the planes of a YUV image, to
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71 better enable hardware acceleration. The YV12 and IYUV formats
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72 each have three planes, corresponding to the Y, U, and V portions
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73 of the image, while packed pixel YUV formats just have one plane.
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74
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75 For palettized mode (8bpp), the screen colormap is now split in
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76 a physical and a logical palette. The physical palette determines
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77 what colours the screen pixels will get when displayed, and the
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78 logical palette controls the mapping from blits to/from the screen.
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79 A new function, SDL_SetPalette() has been added to change
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80 logical and physical palettes separately. SDL_SetColors() works
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81 just as before, and is equivalent to calling SDL_SetPalette() with
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82 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
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83
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84 SDL_BlitSurface() no longer modifies the source rectangle, only the
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85 destination rectangle. The width/height members of the destination
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86 rectangle are ignored, only the position is used.
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87
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88 The old source clipping function SDL_SetClipping() has been replaced
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89 with a more useful function to set the destination clipping rectangle:
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90 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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91
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92 Added a function to see what subsystems have been initialized:
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93 Uint32 SDL_WasInit(Uint32 flags)
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94
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95 The Big Alpha Flip: SDL now treats alpha as opacity like everybody
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96 else, and not as transparency:
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97
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98 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
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99 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
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100 Values between 0 and 255 vary from fully transparent to fully opaque.
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101
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102 New functions:
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103 SDL_DisplayFormatAlpha()
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104 Returns a surface converted to a format with alpha-channel
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105 that can be blit efficiently to the screen. (In other words,
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106 like SDL_DisplayFormat() but the resulting surface has
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107 an alpha channel.) This is useful for surfaces with alpha.
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108 SDL_MapRGBA()
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109 Works as SDL_MapRGB() but takes an additional alpha parameter.
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110 SDL_GetRGBA()
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111 Works as SDL_GetRGB() but also returns the alpha value
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112 (SDL_ALPHA_OPAQUE for formats without an alpha channel)
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113
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114 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
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115 the [0..255] interval. Previously, SDL_GetRGB() would return
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116 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
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117 (N.B.: This is broken for bit fields < 3 bits.)
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118
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119 SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
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120
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121 SDL_SetAlpha() can now be used for both setting the per-surface
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122 alpha, using the new way of thinking of alpha, and also to enable
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123 and disable per-pixel alpha blending for surfaces with an alpha
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124 channel:
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125 To disable alpha blending:
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126 SDL_SetAlpha(surface, 0, 0);
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127 To re-enable alpha blending:
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128 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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129 Surfaces with an alpha channel have blending enabled by default.
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130
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131 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
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132 RLE acceleration of blits, just as like with SDL_SetColorKey().
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133 This flag can be set for both surfaces with an alpha channel
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134 and surfaces with an alpha value set by SDL_SetAlpha().
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135 As always, RLE surfaces must be locked before pixel access is
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136 allowed, and unlocked before any other SDL operations are done
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137 on it.
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138
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139 The blit semantics for surfaces with and without alpha and colorkey
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140 have now been defined:
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141
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142 RGBA->RGB:
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143 SDL_SRCALPHA set:
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144 alpha-blend (using alpha-channel).
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145 SDL_SRCCOLORKEY ignored.
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146 SDL_SRCALPHA not set:
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147 copy RGB.
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148 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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149 RGB values of the source colour key, ignoring alpha in the
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150 comparison.
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151
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152 RGB->RGBA:
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153 SDL_SRCALPHA set:
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154 alpha-blend (using the source per-surface alpha value);
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155 set destination alpha to opaque.
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156 SDL_SRCALPHA not set:
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157 copy RGB, set destination alpha to opaque.
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158 both:
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159 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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160 source colour key.
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161
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162 RGBA->RGBA:
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163 SDL_SRCALPHA set:
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164 alpha-blend (using the source alpha channel) the RGB values;
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165 leave destination alpha untouched. [Note: is this correct?]
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166 SDL_SRCCOLORKEY ignored.
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167 SDL_SRCALPHA not set:
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168 copy all of RGBA to the destination.
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169 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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170 RGB values of the source colour key, ignoring alpha in the
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171 comparison.
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172
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173 RGB->RGB:
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174 SDL_SRCALPHA set:
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175 alpha-blend (using the source per-surface alpha value).
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176 SDL_SRCALPHA not set:
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177 copy RGB.
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178 both:
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179 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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180 source colour key.
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181
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182 As a special case, blits from surfaces with per-surface alpha
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183 value of 128 (50% transparency) are optimised and much faster
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184 than other alpha values. This does not apply to surfaces with
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185 alpha channels (per-pixel alpha).
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186
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187 New functions for manipulating the gamma of the display have
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188 been added:
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189 int SDL_SetGamma(float red, float green, float blue);
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190 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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191 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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192 Gamma ramps are tables with 256 entries which map the screen color
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193 components into actually displayed colors. For an example of
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194 implementing gamma correction and gamma fades, see test/testgamma.c
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195 Gamma control is not supported on all hardware.
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196
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197 1.1.4:
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198 The size of the SDL_CDtrack structure changed from 8 to 12 bytes
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199 as the size of the length member was extended to 32 bits.
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200
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201 You can now use SDL for 2D blitting with a GL mode by passing the
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202 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
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203 32 bpp, and the data in the framebuffer is put into the GL scene
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204 when you call SDL_UpdateRects(), and the scene will be visible
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205 when you call SDL_GL_SwapBuffers().
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206
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207 Run the "testgl" test program with the -logo command line option
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208 to see an example of this blending of 2D and 3D in SDL.
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209
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210 1.1.3:
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211 Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
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212
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213 Added resizable window support - just add SDL_RESIZABLE to the
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214 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
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215 See SDL_events.h for details on the new SDL_ResizeEvent structure.
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216
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217 Added condition variable support, based on mutexes and semaphores.
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218 SDL_CreateCond()
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219 SDL_DestroyCond()
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220 SDL_CondSignal()
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221 SDL_CondBroadcast()
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222 SDL_CondWait()
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223 SDL_CondTimedWait()
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224 The new function prototypes are in SDL_mutex.h
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225
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226 Added counting semaphore support, based on the mutex primitive.
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227 SDL_CreateSemaphore()
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228 SDL_DestroySemaphore()
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229 SDL_SemWait()
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230 SDL_SemTryWait()
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231 SDL_SemWaitTimeout()
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232 SDL_SemPost()
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233 SDL_SemValue()
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234 The new function prototypes are in SDL_mutex.h
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235
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236 Added support for asynchronous blitting. To take advantage of this,
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237 you must set the SDL_ASYNCBLIT flag when setting the video mode and
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238 creating surfaces that you want accelerated in this way. You must
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239 lock surfaces that have this flag set, and the lock will block until
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240 any queued blits have completed.
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241
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242 Added YUV video overlay support.
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243 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
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244 This function creates an overlay surface:
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245 SDL_CreateYUVOverlay()
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246 You must lock and unlock the overlay to get access to the data:
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247 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
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248 You can then display the overlay:
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249 SDL_DisplayYUVOverlay()
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250 You must free the overlay when you are done using it:
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251 SDL_FreeYUVOverlay()
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252 See SDL_video.h for the full function prototypes.
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253
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254 The joystick hat position constants have been changed:
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255 Old constant New constant
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256 ------------ ------------
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257 0 SDL_HAT_CENTERED
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258 1 SDL_HAT_UP
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259 2 SDL_HAT_RIGHTUP
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260 3 SDL_HAT_RIGHT
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261 4 SDL_HAT_RIGHTDOWN
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262 5 SDL_HAT_DOWN
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263 6 SDL_HAT_LEFTDOWN
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264 7 SDL_HAT_LEFT
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265 8 SDL_HAT_LEFTUP
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266 The new constants are bitmasks, so you can check for the
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267 individual axes like this:
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268 if ( hat_position & SDL_HAT_UP ) {
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269 }
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270 and you'll catch left-up, up, and right-up.
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271
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272 1.1.2:
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273 Added multiple timer support:
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274 SDL_AddTimer() and SDL_RemoveTimer()
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275
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276 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
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277
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278 1.1.0:
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279 Added initial OpenGL support.
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280 First set GL attributes (such as RGB depth, alpha depth, etc.)
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281 SDL_GL_SetAttribute()
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282 Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
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283 Perform all of your normal GL drawing.
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284 Finally swap the buffers with the new SDL function:
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285 SDL_GL_SwapBuffers()
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286 See the new 'testgl' test program for an example of using GL with SDL.
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287
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288 You can load GL extension functions by using the function:
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289 SDL_GL_LoadProcAddress()
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290
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291 Added functions to initialize and cleanup specific SDL subsystems:
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292 SDL_InitSubSystem() and SDL_QuitSubSystem()
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293
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294 Added user-defined event type:
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295 typedef struct {
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296 Uint8 type;
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297 int code;
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298 void *data1;
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299 void *data2;
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300 } SDL_UserEvent;
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301 This structure is in the "user" member of an SDL_Event.
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302
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303 Added a function to push events into the event queue:
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304 SDL_PushEvent()
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305
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306 Example of using the new SDL user-defined events:
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307 {
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308 SDL_Event event;
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309
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310 event.type = SDL_USEREVENT;
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311 event.user.code = my_event_code;
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312 event.user.data1 = significant_data;
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313 event.user.data2 = 0;
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314 SDL_PushEvent(&event);
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315 }
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316
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317 Added a function to get mouse deltas since last query:
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318 SDL_GetRelativeMouseState()
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319
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320 Added a boolean datatype to SDL_types.h:
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321 SDL_bool = { SDL_TRUE, SDL_FALSE }
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322
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323 Added a function to get the current audio status:
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324 SDL_GetAudioState();
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325 It returns one of:
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326 SDL_AUDIO_STOPPED,
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327 SDL_AUDIO_PLAYING,
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328 SDL_AUDIO_PAUSED
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329
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330 Added an AAlib driver (ASCII Art) - by Stephane Peter.
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331
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332 1.0.6:
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333 The input grab state is reset after each call to SDL_SetVideoMode().
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334 The input is grabbed by default in fullscreen mode, and ungrabbed in
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335 windowed mode. If you want to set input grab to a particular value,
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336 you should set it after each call to SDL_SetVideoMode().
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337
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338 1.0.5:
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339 Exposed SDL_AudioInit(), SDL_VideoInit()
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340 Added SDL_AudioDriverName() and SDL_VideoDriverName()
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341
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342 Added new window manager function:
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343 SDL_WM_ToggleFullScreen()
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344 This is currently implemented only on Linux
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345
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346 The ALT-ENTER code has been removed - it's not appropriate for a
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347 lib to bind keys when they aren't even emergency escape sequences.
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348
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349 ALT-ENTER functionality can be implemented with the following code:
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350
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351 int Handle_AltEnter(const SDL_Event *event)
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352 {
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353 if ( event->type == SDL_KEYDOWN ) {
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354 if ( (event->key.keysym.sym == SDLK_RETURN) &&
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355 (event->key.keysym.mod & KMOD_ALT) ) {
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356 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
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357 return(0);
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358 }
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359 }
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360 return(1);
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361 }
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362 SDL_SetEventFilter(Handle_AltEnter);
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363
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364 1.0.3:
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365 Under X11, if you grab the input and hide the mouse cursor,
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366 the mouse will go into a "relative motion" mode where you
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367 will always get relative motion events no matter how far in
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368 each direction you move the mouse - relative motion is not
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369 bounded by the edges of the window (though the absolute values
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370 of the mouse positions are clamped by the size of the window).
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371 The SVGAlib, framebuffer console, and DirectInput drivers all
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372 have this behavior naturally, and the GDI and BWindow drivers
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373 never go into "relative motion" mode.
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374
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375 1.0.2:
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376 Added a function to enable keyboard repeat:
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377 SDL_EnableKeyRepeat()
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378
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379 Added a function to grab the mouse and keyboard input
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380 SDL_WM_GrabInput()
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381
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382 Added a function to iconify the window.
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383 SDL_WM_IconifyWindow()
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384 If this function succeeds, the application will receive an event
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385 signaling SDL_APPACTIVE event
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386
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387 1.0.1:
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388 Added constants to SDL_audio.h for 16-bit native byte ordering:
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389 AUDIO_U16SYS, AUDIO_S16SYS
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390
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391 1.0.0:
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392 New public release
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393
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394 Version 0.11:
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395
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396 0.11.5:
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397 A new function SDL_GetVideoSurface() has been added, and returns
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398 a pointer to the current display surface.
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399
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400 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
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401 a new function SDL_CreateRGBSurfaceFrom() has been added to allow
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402 creating an SDL surface from an existing pixel data buffer.
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403
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404 Added SDL_GetRGB() to the headers and documentation.
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405
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406 0.11.4:
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407 SDL_SetLibraryPath() is no longer meaningful, and has been removed.
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408
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409 0.11.3:
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410 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
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411 installing fatal signal handlers on operating systems that support
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412 them.
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413
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414 Version 0.9:
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415
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416 0.9.15:
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417 SDL_CreateColorCursor() has been removed. Color cursors should
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418 be implemented as sprites, blitted by the application when the
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419 cursor moves. To get smooth color cursor updates when the app
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420 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
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421 allows you to handle the mouse motion in another thread from an
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422 event filter function, but is currently only supported by Linux
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423 and BeOS. Note that you'll have to protect the display surface
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424 from multi-threaded access by using mutexes if you do this.
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425
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426 Thread-safe surface support has been removed from SDL.
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427 This makes blitting somewhat faster, by removing SDL_MiddleBlit().
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428 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
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429 You can make your surfaces thread-safe by allocating your own
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430 mutex and making lock/unlock calls around accesses to your surface.
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431
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432 0.9.14:
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433 SDL_GetMouseState() now takes pointers to int rather than Uint16.
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434
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435 If you set the SDL_WINDOWID environment variable under UNIX X11,
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diff changeset
436 SDL will use that as the main window instead of creating it's own.
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437 This is an unsupported extension to SDL, and not portable at all.
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438
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439 0.9.13:
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440 Added a function SDL_SetLibraryPath() which can be used to specify
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441 the directory containing the SDL dynamic libraries. This is useful
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diff changeset
442 for commercial applications which ship with particular versions
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443 of the libraries, and for security on multi-user systems.
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444 If this function is not used, the default system directories are
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445 searched using the native dynamic object loading mechanism.
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446
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447 In order to support C linkage under Visual C++, you must declare
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448 main() without any return type:
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449 main(int argc, char *argv[]) {
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450 /* Do the program... */
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451 return(0);
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452 }
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453 C++ programs should also return a value if compiled under VC++.
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454
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455 The blit_endian member of the SDL_VideoInfo struct has been removed.
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456
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457 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
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458 is now no longer any function to translate a keysym to a character.
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459
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460 The SDL_keysym structure has been extended with a 'scancode' and
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461 'unicode' member. The 'scancode' is a hardware specific scancode
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462 for the key that was pressed, and may be 0. The 'unicode' member
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463 is a 16-bit UNICODE translation of the key that was pressed along
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464 with any modifiers or compose keys that have been pressed.
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465 If no UNICODE translation exists for the key, 'unicode' will be 0.
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466
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467 Added a function SDL_EnableUNICODE() to enable/disable UNICODE
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468 translation of character keypresses. Translation defaults off.
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469
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470 To convert existing code to use the new API, change code which
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471 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
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472 and change code which uses it to get the ASCII value of a sym to
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473 use the 'unicode' member of the event keysym.
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474
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475 0.9.12:
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476 There is partial support for 64-bit datatypes. I don't recommend
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diff changeset
477 you use this if you have a choice, because 64-bit datatypes are not
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478 supported on many platforms. On platforms for which it is supported,
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479 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
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480 you can use the Uint64 and Sint64 datatypes.
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diff changeset
481
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482 Added functions to SDL_endian.h to support 64-bit datatypes:
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diff changeset
483 SDL_SwapLE64(), SDL_SwapBE64(),
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diff changeset
484 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
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diff changeset
485
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486 A new member "len_ratio" has been added to the SDL_AudioCVT structure,
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487 and allows you to determine either the original buffer length or the
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488 converted buffer length, given the other.
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489
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490 A new function SDL_FreeWAV() has been added to the API to free data
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parents:
diff changeset
491 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since
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parents:
diff changeset
492 the gcc compiled DLL uses a different heap than VC++ compiled apps.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493
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parents:
diff changeset
494 SDL now has initial support for international keyboards using the
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 Latin character set.
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parents:
diff changeset
496 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
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parents:
diff changeset
497 compile-time variable, or you can set the environment variable
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire.
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parents:
diff changeset
499 The valid values for these variables can be found in SDL_keyboard.c
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 Full support for German and French keyboards under X11 is implemented.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502
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parents:
diff changeset
503 0.9.11:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 The THREADED_EVENTS compile-time define has been replaced with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 SDL will create a separate thread to perform input event handling.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 If this flag is passed to SDL_Init(), and the OS doesn't support
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 event handling in a separate thread, SDL_Init() will fail.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 Be sure to add calls to SDL_Delay() in your main thread to allow
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 the OS to schedule your event thread, or it may starve, leading
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 to slow event delivery and/or dropped events.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 Currently MacOS and Win32 do not support this flag, while BeOS
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 and Linux do support it. I recommend that your application only
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parents:
diff changeset
514 use this flag if absolutely necessary.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 The SDL thread function passed to SDL_CreateThread() now returns a
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parents:
diff changeset
517 status. This status can be retrieved by passing a non-NULL pointer
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 as the 'status' argument to SDL_WaitThread().
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parents:
diff changeset
519
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 The volume parameter to SDL_MixAudio() has been increased in range
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 from (0-8) to (0-128)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 SDL now has a data source abstraction which can encompass a file,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 an area of memory, or any custom object you can envision. It uses
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 these abstractions, SDL_RWops, in the endian read/write functions,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 and the built-in WAV and BMP file loaders. This means you can load
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 WAV chunks from memory mapped files, compressed archives, network
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 pipes, or anything else that has a data read abstraction.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 There are three built-in data source abstractions:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 along with a generic data source allocation function:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 SDL_AllocRW()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 These data sources can be used like stdio file pointers with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 following convenience functions:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 These functions are defined in the new header file "SDL_rwops.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 The endian swapping functions have been turned into macros for speed
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 the endianness of the host system.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 The endian read/write functions now take an SDL_RWops pointer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 instead of a stdio FILE pointer, to support the new data source
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 abstraction.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547
74212992fb08 Initial revision
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parents:
diff changeset
548 The SDL_*LoadWAV() functions have been replaced with a single
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 free it as the second parameter. SDL_LoadWAV() is a macro for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 backward compatibility and convenience:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 with a single function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 are macros for backward compatibility and convenience:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...);
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parents:
diff changeset
561 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 Note that these functions use SDL_RWseek() extensively, and should
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 not be used on pipes or other non-seekable data sources.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 0.9.10:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 extended to support multiple types of display drivers, as well as
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 safe access to the X11 display when THREADED_EVENTS is enabled.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 The new structures are documented in the SDL_syswm.h header file.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 should now work properly, as well as the "Windows" keys on US
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 keyboards.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 The Linux CD-ROM code now reads the CD-ROM devices from /etc/fstab
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 instead of trying to open each block device on the system.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 The CD must be listed in /etc/fstab as using the iso9660 filesystem.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579 On Linux, if you define THREADED_EVENTS at compile time, a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 thread will be spawned to gather X events asynchronously from the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 graphics updates. This hasn't been extensively tested, but it does
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 provide a means of handling keyboard and mouse input in a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 thread from the graphics thread. (This is now enabled by default.)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 A special access function SDL_PeepEvents() allows you to manipulate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 the event queue in a thread-safe manner, including peeking at events,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 removing events of a specified type, and adding new events of arbitrary
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 type to the queue (use the new 'user' member of the SDL_Event type).
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 If you use SDL_PeepEvents() to gather events, then the main graphics
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 thread needs to call SDL_PumpEvents() periodically to drive the event
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 loop and generate input events. This is not necessary if SDL has been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 compiled with THREADED_EVENTS defined, but doesn't hurt.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 A new function SDL_ThreadID() returns the identifier associated with
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 the current thread.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 0.9.9:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 The AUDIO_STEREO format flag has been replaced with a new 'channels'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 member of the SDL_AudioSpec structure. The channels are 1 for mono
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 audio, and 2 for stereo audio. In the future more channels may be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 supported for 3D surround sound.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 The SDL_MixAudio() function now takes an additional volume parameter,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 which should be set to SDL_MIX_MAXVOLUME for compatibility with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 original function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 The CD-ROM functions which take a 'cdrom' parameter can now be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 passed NULL, and will act on the last successfully opened CD-ROM.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 0.9.8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 0.9.7:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 0.9.6:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 Added a fast rectangle fill function: SDL_FillRect()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 Addition of a useful function for getting info on the video hardware:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 const SDL_VideoInfo *SDL_GetVideoInfo(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 This function replaces SDL_GetDisplayFormat().
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 Initial support for double-buffering:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 Update the screen with a new function: SDL_Flip()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 SDL_AllocSurface() takes two new flags:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 and if the hardware supports hardware acceleration of colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 between two surfaces in video memory, to place the surface in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 memory if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 SDL_SRCALPHA means that the surface will be used for alpha blits and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 if the hardware supports hardware acceleration of alpha blits between
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 two surfaces in video memory, to place the surface in video memory
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 SDL_HWSURFACE now means that the surface will be created with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 same format as the display surface, since having surfaces in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 memory is only useful for fast blitting to the screen, and you can't
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 blit surfaces with different surface formats in video memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 0.9.5:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 You can now pass a NULL mask to SDL_WM_SetIcon(), and it will assume
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 that the icon consists of the entire image.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 SDL_LowerBlit() is back -- but don't use it on the display surface.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 It is exactly the same as SDL_MiddleBlit(), but doesn't check for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 thread safety.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651 a FILE pointer instead of a file name.
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652
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653 Added CD-ROM audio control API:
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654 SDL_CDNumDrives()
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655 SDL_CDName()
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656 SDL_CDOpen()
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657 SDL_CDStatus()
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658 SDL_CDPlayTracks()
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659 SDL_CDPlay()
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660 SDL_CDPause()
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661 SDL_CDResume()
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662 SDL_CDStop()
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Sam Lantinga <slouken@lokigames.com>
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663 SDL_CDEject()
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Sam Lantinga <slouken@lokigames.com>
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664 SDL_CDClose()
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665
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666 0.9.4:
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667 No changes, bugfixes only.
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Sam Lantinga <slouken@lokigames.com>
parents:
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668
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669 0.9.3:
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670 Mouse motion event now includes relative motion information:
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671 Sint16 event->motion.xrel, Sint16 event->motion.yrel
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672
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673 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT
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674 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
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parents:
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675
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676 0.9.2:
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677 No changes, bugfixes only.
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Sam Lantinga <slouken@lokigames.com>
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diff changeset
678
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parents:
diff changeset
679 0.9.1:
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parents:
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680 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
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diff changeset
681 automatically mapped on blit.
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parents:
diff changeset
682
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Sam Lantinga <slouken@lokigames.com>
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683 0.8.0:
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684 SDL stable release