annotate WhatsNew @ 537:77b05010bb33

*** empty log message ***
author Sam Lantinga <slouken@libsdl.org>
date Sat, 09 Nov 2002 05:51:13 +0000
parents 24edec3cafe4
children 12a21d82a060
rev   line source
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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
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6 1.2.5:
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7 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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8
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9 Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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10
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11 1.2.0:
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12 Added SDL_VIDEOEXPOSE event to signal that the screen needs to
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13 be redrawn. This is currently only delivered to OpenGL windows
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14 on X11, though it may be delivered in the future when the video
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15 memory is lost under DirectX.
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16
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17 1.1.8:
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18 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
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19 that has no title bar or frame decoration. Fullscreen video
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20 modes automatically have this flag set.
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21
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22 Added a function to query the clipping rectangle for a surface:
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23 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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24
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25 Added a function to query the current event filter:
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26 SDL_EventFilter SDL_GetEventFilter(void)
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27
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28 If you pass -1 to SDL_ShowCursor(), it won't change the current
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29 cursor visibility state, but will still return it.
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30
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31 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
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32 you can nest them as deep as you want, as long as each lock call
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33 has a matching unlock call. The surface remains locked until the
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34 last matching unlock call.
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35
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36 Note that you may not blit to or from a locked surface.
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37
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38 1.1.7:
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39 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
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40 arrays of Uint16 values instead of Uint8 values. For the most part,
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41 you can just take your old values and shift them up 8 bits to get
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42 new correct values for your gamma ramps.
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43
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44 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
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45 and SDL will try to RLE accelerate colorkey and alpha blits in the
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46 resulting surface.
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47
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48 1.1.6:
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49 Added a function to return the thread ID of a specific thread:
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50 Uint32 SDL_GetThreadID(SDL_Thread *thread)
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51 If 'thread' is NULL, this function returns the id for this thread.
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52
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53 1.1.5:
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54 The YUV overlay structure has been changed to use an array of
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55 pitches and pixels representing the planes of a YUV image, to
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56 better enable hardware acceleration. The YV12 and IYUV formats
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57 each have three planes, corresponding to the Y, U, and V portions
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58 of the image, while packed pixel YUV formats just have one plane.
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59
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60 For palettized mode (8bpp), the screen colormap is now split in
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61 a physical and a logical palette. The physical palette determines
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62 what colours the screen pixels will get when displayed, and the
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63 logical palette controls the mapping from blits to/from the screen.
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64 A new function, SDL_SetPalette() has been added to change
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65 logical and physical palettes separately. SDL_SetColors() works
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66 just as before, and is equivalent to calling SDL_SetPalette() with
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67 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
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68
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69 SDL_BlitSurface() no longer modifies the source rectangle, only the
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70 destination rectangle. The width/height members of the destination
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71 rectangle are ignored, only the position is used.
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72
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73 The old source clipping function SDL_SetClipping() has been replaced
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74 with a more useful function to set the destination clipping rectangle:
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75 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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76
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77 Added a function to see what subsystems have been initialized:
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78 Uint32 SDL_WasInit(Uint32 flags)
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79
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80 The Big Alpha Flip: SDL now treats alpha as opacity like everybody
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81 else, and not as transparency:
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82
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83 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
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84 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
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85 Values between 0 and 255 vary from fully transparent to fully opaque.
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86
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87 New functions:
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88 SDL_DisplayFormatAlpha()
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89 Returns a surface converted to a format with alpha-channel
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90 that can be blit efficiently to the screen. (In other words,
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91 like SDL_DisplayFormat() but the resulting surface has
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92 an alpha channel.) This is useful for surfaces with alpha.
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93 SDL_MapRGBA()
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94 Works as SDL_MapRGB() but takes an additional alpha parameter.
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95 SDL_GetRGBA()
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96 Works as SDL_GetRGB() but also returns the alpha value
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97 (SDL_ALPHA_OPAQUE for formats without an alpha channel)
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98
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99 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
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100 the [0..255] interval. Previously, SDL_GetRGB() would return
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101 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
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102 (N.B.: This is broken for bit fields < 3 bits.)
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103
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104 SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
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105
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106 SDL_SetAlpha() can now be used for both setting the per-surface
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107 alpha, using the new way of thinking of alpha, and also to enable
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108 and disable per-pixel alpha blending for surfaces with an alpha
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109 channel:
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110 To disable alpha blending:
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111 SDL_SetAlpha(surface, 0, 0);
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112 To re-enable alpha blending:
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113 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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114 Surfaces with an alpha channel have blending enabled by default.
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115
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116 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
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117 RLE acceleration of blits, just as like with SDL_SetColorKey().
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118 This flag can be set for both surfaces with an alpha channel
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119 and surfaces with an alpha value set by SDL_SetAlpha().
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120 As always, RLE surfaces must be locked before pixel access is
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121 allowed, and unlocked before any other SDL operations are done
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122 on it.
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123
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124 The blit semantics for surfaces with and without alpha and colorkey
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125 have now been defined:
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126
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127 RGBA->RGB:
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128 SDL_SRCALPHA set:
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129 alpha-blend (using alpha-channel).
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130 SDL_SRCCOLORKEY ignored.
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131 SDL_SRCALPHA not set:
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132 copy RGB.
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133 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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134 RGB values of the source colour key, ignoring alpha in the
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135 comparison.
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136
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137 RGB->RGBA:
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138 SDL_SRCALPHA set:
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139 alpha-blend (using the source per-surface alpha value);
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140 set destination alpha to opaque.
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141 SDL_SRCALPHA not set:
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142 copy RGB, set destination alpha to opaque.
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143 both:
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144 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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145 source colour key.
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146
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147 RGBA->RGBA:
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148 SDL_SRCALPHA set:
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149 alpha-blend (using the source alpha channel) the RGB values;
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150 leave destination alpha untouched. [Note: is this correct?]
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151 SDL_SRCCOLORKEY ignored.
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152 SDL_SRCALPHA not set:
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153 copy all of RGBA to the destination.
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154 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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155 RGB values of the source colour key, ignoring alpha in the
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156 comparison.
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157
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158 RGB->RGB:
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159 SDL_SRCALPHA set:
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160 alpha-blend (using the source per-surface alpha value).
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161 SDL_SRCALPHA not set:
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162 copy RGB.
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163 both:
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164 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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165 source colour key.
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166
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167 As a special case, blits from surfaces with per-surface alpha
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168 value of 128 (50% transparency) are optimised and much faster
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169 than other alpha values. This does not apply to surfaces with
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170 alpha channels (per-pixel alpha).
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171
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172 New functions for manipulating the gamma of the display have
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173 been added:
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174 int SDL_SetGamma(float red, float green, float blue);
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175 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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176 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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177 Gamma ramps are tables with 256 entries which map the screen color
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178 components into actually displayed colors. For an example of
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179 implementing gamma correction and gamma fades, see test/testgamma.c
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180 Gamma control is not supported on all hardware.
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181
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182 1.1.4:
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183 The size of the SDL_CDtrack structure changed from 8 to 12 bytes
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184 as the size of the length member was extended to 32 bits.
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185
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186 You can now use SDL for 2D blitting with a GL mode by passing the
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187 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
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188 32 bpp, and the data in the framebuffer is put into the GL scene
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189 when you call SDL_UpdateRects(), and the scene will be visible
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190 when you call SDL_GL_SwapBuffers().
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191
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192 Run the "testgl" test program with the -logo command line option
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193 to see an example of this blending of 2D and 3D in SDL.
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194
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195 1.1.3:
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196 Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
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197
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198 Added resizable window support - just add SDL_RESIZABLE to the
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199 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
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200 See SDL_events.h for details on the new SDL_ResizeEvent structure.
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201
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202 Added condition variable support, based on mutexes and semaphores.
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203 SDL_CreateCond()
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204 SDL_DestroyCond()
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205 SDL_CondSignal()
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206 SDL_CondBroadcast()
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207 SDL_CondWait()
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208 SDL_CondTimedWait()
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209 The new function prototypes are in SDL_mutex.h
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210
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211 Added counting semaphore support, based on the mutex primitive.
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212 SDL_CreateSemaphore()
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213 SDL_DestroySemaphore()
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214 SDL_SemWait()
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215 SDL_SemTryWait()
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216 SDL_SemWaitTimeout()
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217 SDL_SemPost()
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218 SDL_SemValue()
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219 The new function prototypes are in SDL_mutex.h
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220
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221 Added support for asynchronous blitting. To take advantage of this,
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222 you must set the SDL_ASYNCBLIT flag when setting the video mode and
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223 creating surfaces that you want accelerated in this way. You must
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224 lock surfaces that have this flag set, and the lock will block until
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225 any queued blits have completed.
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226
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227 Added YUV video overlay support.
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228 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
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229 This function creates an overlay surface:
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230 SDL_CreateYUVOverlay()
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231 You must lock and unlock the overlay to get access to the data:
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232 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
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233 You can then display the overlay:
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234 SDL_DisplayYUVOverlay()
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235 You must free the overlay when you are done using it:
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236 SDL_FreeYUVOverlay()
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237 See SDL_video.h for the full function prototypes.
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238
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239 The joystick hat position constants have been changed:
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240 Old constant New constant
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241 ------------ ------------
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242 0 SDL_HAT_CENTERED
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243 1 SDL_HAT_UP
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244 2 SDL_HAT_RIGHTUP
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245 3 SDL_HAT_RIGHT
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246 4 SDL_HAT_RIGHTDOWN
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247 5 SDL_HAT_DOWN
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248 6 SDL_HAT_LEFTDOWN
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249 7 SDL_HAT_LEFT
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250 8 SDL_HAT_LEFTUP
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251 The new constants are bitmasks, so you can check for the
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252 individual axes like this:
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253 if ( hat_position & SDL_HAT_UP ) {
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254 }
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255 and you'll catch left-up, up, and right-up.
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256
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257 1.1.2:
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258 Added multiple timer support:
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259 SDL_AddTimer() and SDL_RemoveTimer()
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260
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261 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
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262
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263 1.1.0:
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264 Added initial OpenGL support.
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265 First set GL attributes (such as RGB depth, alpha depth, etc.)
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266 SDL_GL_SetAttribute()
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267 Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
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268 Perform all of your normal GL drawing.
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269 Finally swap the buffers with the new SDL function:
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270 SDL_GL_SwapBuffers()
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271 See the new 'testgl' test program for an example of using GL with SDL.
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272
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273 You can load GL extension functions by using the function:
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274 SDL_GL_LoadProcAddress()
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275
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276 Added functions to initialize and cleanup specific SDL subsystems:
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277 SDL_InitSubSystem() and SDL_QuitSubSystem()
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278
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279 Added user-defined event type:
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280 typedef struct {
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281 Uint8 type;
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282 int code;
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283 void *data1;
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284 void *data2;
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285 } SDL_UserEvent;
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286 This structure is in the "user" member of an SDL_Event.
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287
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288 Added a function to push events into the event queue:
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289 SDL_PushEvent()
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290
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291 Example of using the new SDL user-defined events:
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292 {
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293 SDL_Event event;
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294
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295 event.type = SDL_USEREVENT;
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296 event.user.code = my_event_code;
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297 event.user.data1 = significant_data;
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298 event.user.data2 = 0;
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299 SDL_PushEvent(&event);
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300 }
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301
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302 Added a function to get mouse deltas since last query:
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303 SDL_GetRelativeMouseState()
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304
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305 Added a boolean datatype to SDL_types.h:
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306 SDL_bool = { SDL_TRUE, SDL_FALSE }
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307
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308 Added a function to get the current audio status:
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309 SDL_GetAudioState();
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310 It returns one of:
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311 SDL_AUDIO_STOPPED,
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312 SDL_AUDIO_PLAYING,
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313 SDL_AUDIO_PAUSED
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314
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315 Added an AAlib driver (ASCII Art) - by Stephane Peter.
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316
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317 1.0.6:
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318 The input grab state is reset after each call to SDL_SetVideoMode().
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319 The input is grabbed by default in fullscreen mode, and ungrabbed in
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320 windowed mode. If you want to set input grab to a particular value,
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321 you should set it after each call to SDL_SetVideoMode().
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322
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323 1.0.5:
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324 Exposed SDL_AudioInit(), SDL_VideoInit()
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325 Added SDL_AudioDriverName() and SDL_VideoDriverName()
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326
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327 Added new window manager function:
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328 SDL_WM_ToggleFullScreen()
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329 This is currently implemented only on Linux
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330
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331 The ALT-ENTER code has been removed - it's not appropriate for a
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332 lib to bind keys when they aren't even emergency escape sequences.
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333
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334 ALT-ENTER functionality can be implemented with the following code:
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335
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336 int Handle_AltEnter(const SDL_Event *event)
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337 {
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338 if ( event->type == SDL_KEYDOWN ) {
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339 if ( (event->key.keysym.sym == SDLK_RETURN) &&
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340 (event->key.keysym.mod & KMOD_ALT) ) {
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341 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
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342 return(0);
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343 }
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344 }
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345 return(1);
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346 }
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347 SDL_SetEventFilter(Handle_AltEnter);
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348
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349 1.0.3:
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350 Under X11, if you grab the input and hide the mouse cursor,
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351 the mouse will go into a "relative motion" mode where you
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352 will always get relative motion events no matter how far in
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353 each direction you move the mouse - relative motion is not
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354 bounded by the edges of the window (though the absolute values
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355 of the mouse positions are clamped by the size of the window).
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356 The SVGAlib, framebuffer console, and DirectInput drivers all
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357 have this behavior naturally, and the GDI and BWindow drivers
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358 never go into "relative motion" mode.
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359
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360 1.0.2:
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361 Added a function to enable keyboard repeat:
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362 SDL_EnableKeyRepeat()
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363
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364 Added a function to grab the mouse and keyboard input
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365 SDL_WM_GrabInput()
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366
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367 Added a function to iconify the window.
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368 SDL_WM_IconifyWindow()
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369 If this function succeeds, the application will receive an event
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370 signaling SDL_APPACTIVE event
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371
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372 1.0.1:
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373 Added constants to SDL_audio.h for 16-bit native byte ordering:
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374 AUDIO_U16SYS, AUDIO_S16SYS
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375
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376 1.0.0:
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377 New public release
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378
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379 Version 0.11:
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380
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381 0.11.5:
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382 A new function SDL_GetVideoSurface() has been added, and returns
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383 a pointer to the current display surface.
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384
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385 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
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386 a new function SDL_CreateRGBSurfaceFrom() has been added to allow
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387 creating an SDL surface from an existing pixel data buffer.
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388
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389 Added SDL_GetRGB() to the headers and documentation.
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390
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391 0.11.4:
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392 SDL_SetLibraryPath() is no longer meaningful, and has been removed.
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393
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394 0.11.3:
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395 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
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396 installing fatal signal handlers on operating systems that support
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397 them.
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398
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399 Version 0.9:
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400
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401 0.9.15:
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402 SDL_CreateColorCursor() has been removed. Color cursors should
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403 be implemented as sprites, blitted by the application when the
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404 cursor moves. To get smooth color cursor updates when the app
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405 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
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406 allows you to handle the mouse motion in another thread from an
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407 event filter function, but is currently only supported by Linux
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408 and BeOS. Note that you'll have to protect the display surface
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409 from multi-threaded access by using mutexes if you do this.
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410
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411 Thread-safe surface support has been removed from SDL.
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412 This makes blitting somewhat faster, by removing SDL_MiddleBlit().
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413 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
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414 You can make your surfaces thread-safe by allocating your own
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415 mutex and making lock/unlock calls around accesses to your surface.
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416
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417 0.9.14:
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418 SDL_GetMouseState() now takes pointers to int rather than Uint16.
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419
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420 If you set the SDL_WINDOWID environment variable under UNIX X11,
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421 SDL will use that as the main window instead of creating it's own.
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422 This is an unsupported extension to SDL, and not portable at all.
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423
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424 0.9.13:
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425 Added a function SDL_SetLibraryPath() which can be used to specify
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426 the directory containing the SDL dynamic libraries. This is useful
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427 for commercial applications which ship with particular versions
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428 of the libraries, and for security on multi-user systems.
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429 If this function is not used, the default system directories are
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430 searched using the native dynamic object loading mechanism.
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431
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432 In order to support C linkage under Visual C++, you must declare
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433 main() without any return type:
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434 main(int argc, char *argv[]) {
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435 /* Do the program... */
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436 return(0);
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437 }
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438 C++ programs should also return a value if compiled under VC++.
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439
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440 The blit_endian member of the SDL_VideoInfo struct has been removed.
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441
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442 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
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443 is now no longer any function to translate a keysym to a character.
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444
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445 The SDL_keysym structure has been extended with a 'scancode' and
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446 'unicode' member. The 'scancode' is a hardware specific scancode
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447 for the key that was pressed, and may be 0. The 'unicode' member
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448 is a 16-bit UNICODE translation of the key that was pressed along
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449 with any modifiers or compose keys that have been pressed.
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450 If no UNICODE translation exists for the key, 'unicode' will be 0.
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451
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452 Added a function SDL_EnableUNICODE() to enable/disable UNICODE
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453 translation of character keypresses. Translation defaults off.
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454
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diff changeset
455 To convert existing code to use the new API, change code which
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456 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
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457 and change code which uses it to get the ASCII value of a sym to
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458 use the 'unicode' member of the event keysym.
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459
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diff changeset
460 0.9.12:
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461 There is partial support for 64-bit datatypes. I don't recommend
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462 you use this if you have a choice, because 64-bit datatypes are not
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463 supported on many platforms. On platforms for which it is supported,
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464 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
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465 you can use the Uint64 and Sint64 datatypes.
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466
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467 Added functions to SDL_endian.h to support 64-bit datatypes:
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468 SDL_SwapLE64(), SDL_SwapBE64(),
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469 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
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470
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471 A new member "len_ratio" has been added to the SDL_AudioCVT structure,
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472 and allows you to determine either the original buffer length or the
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473 converted buffer length, given the other.
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474
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475 A new function SDL_FreeWAV() has been added to the API to free data
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476 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since
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diff changeset
477 the gcc compiled DLL uses a different heap than VC++ compiled apps.
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478
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479 SDL now has initial support for international keyboards using the
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480 Latin character set.
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481 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
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482 compile-time variable, or you can set the environment variable
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483 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire.
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484 The valid values for these variables can be found in SDL_keyboard.c
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485
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486 Full support for German and French keyboards under X11 is implemented.
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487
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488 0.9.11:
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489 The THREADED_EVENTS compile-time define has been replaced with the
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diff changeset
490 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
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diff changeset
491 SDL will create a separate thread to perform input event handling.
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492 If this flag is passed to SDL_Init(), and the OS doesn't support
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493 event handling in a separate thread, SDL_Init() will fail.
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494 Be sure to add calls to SDL_Delay() in your main thread to allow
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parents:
diff changeset
495 the OS to schedule your event thread, or it may starve, leading
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parents:
diff changeset
496 to slow event delivery and/or dropped events.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 Currently MacOS and Win32 do not support this flag, while BeOS
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 and Linux do support it. I recommend that your application only
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 use this flag if absolutely necessary.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 The SDL thread function passed to SDL_CreateThread() now returns a
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 status. This status can be retrieved by passing a non-NULL pointer
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 as the 'status' argument to SDL_WaitThread().
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 The volume parameter to SDL_MixAudio() has been increased in range
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 from (0-8) to (0-128)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 SDL now has a data source abstraction which can encompass a file,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 an area of memory, or any custom object you can envision. It uses
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 these abstractions, SDL_RWops, in the endian read/write functions,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 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
512 WAV chunks from memory mapped files, compressed archives, network
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 pipes, or anything else that has a data read abstraction.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 There are three built-in data source abstractions:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 along with a generic data source allocation function:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 SDL_AllocRW()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 These data sources can be used like stdio file pointers with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 following convenience functions:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 These functions are defined in the new header file "SDL_rwops.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 The endian swapping functions have been turned into macros for speed
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 the endianness of the host system.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 The endian read/write functions now take an SDL_RWops pointer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 instead of a stdio FILE pointer, to support the new data source
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 abstraction.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 The SDL_*LoadWAV() functions have been replaced with a single
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 free it as the second parameter. SDL_LoadWAV() is a macro for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 backward compatibility and convenience:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 with a single function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 are macros for backward compatibility and convenience:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 Note that these functions use SDL_RWseek() extensively, and should
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 not be used on pipes or other non-seekable data sources.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 0.9.10:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 extended to support multiple types of display drivers, as well as
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 safe access to the X11 display when THREADED_EVENTS is enabled.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 The new structures are documented in the SDL_syswm.h header file.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 should now work properly, as well as the "Windows" keys on US
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 keyboards.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 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
561 instead of trying to open each block device on the system.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 The CD must be listed in /etc/fstab as using the iso9660 filesystem.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 On Linux, if you define THREADED_EVENTS at compile time, a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 thread will be spawned to gather X events asynchronously from the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 graphics updates. This hasn't been extensively tested, but it does
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 provide a means of handling keyboard and mouse input in a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 thread from the graphics thread. (This is now enabled by default.)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 A special access function SDL_PeepEvents() allows you to manipulate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 the event queue in a thread-safe manner, including peeking at events,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 removing events of a specified type, and adding new events of arbitrary
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 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
574
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 If you use SDL_PeepEvents() to gather events, then the main graphics
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 thread needs to call SDL_PumpEvents() periodically to drive the event
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 loop and generate input events. This is not necessary if SDL has been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 compiled with THREADED_EVENTS defined, but doesn't hurt.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 A new function SDL_ThreadID() returns the identifier associated with
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 the current thread.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 0.9.9:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 The AUDIO_STEREO format flag has been replaced with a new 'channels'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 member of the SDL_AudioSpec structure. The channels are 1 for mono
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 audio, and 2 for stereo audio. In the future more channels may be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 supported for 3D surround sound.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 The SDL_MixAudio() function now takes an additional volume parameter,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 which should be set to SDL_MIX_MAXVOLUME for compatibility with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 original function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 The CD-ROM functions which take a 'cdrom' parameter can now be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 passed NULL, and will act on the last successfully opened CD-ROM.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 0.9.8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 0.9.7:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 0.9.6:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 Added a fast rectangle fill function: SDL_FillRect()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 Addition of a useful function for getting info on the video hardware:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 const SDL_VideoInfo *SDL_GetVideoInfo(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 This function replaces SDL_GetDisplayFormat().
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 Initial support for double-buffering:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 Update the screen with a new function: SDL_Flip()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 SDL_AllocSurface() takes two new flags:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 and if the hardware supports hardware acceleration of colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 between two surfaces in video memory, to place the surface in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 memory if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 SDL_SRCALPHA means that the surface will be used for alpha blits and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 if the hardware supports hardware acceleration of alpha blits between
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 two surfaces in video memory, to place the surface in video memory
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 SDL_HWSURFACE now means that the surface will be created with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 same format as the display surface, since having surfaces in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 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
625 blit surfaces with different surface formats in video memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 0.9.5:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 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
629 that the icon consists of the entire image.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 SDL_LowerBlit() is back -- but don't use it on the display surface.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 It is exactly the same as SDL_MiddleBlit(), but doesn't check for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 thread safety.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 a FILE pointer instead of a file name.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 Added CD-ROM audio control API:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 SDL_CDNumDrives()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 SDL_CDName()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641 SDL_CDOpen()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 SDL_CDStatus()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 SDL_CDPlayTracks()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 SDL_CDPlay()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 SDL_CDPause()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 SDL_CDResume()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 SDL_CDStop()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 SDL_CDEject()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649 SDL_CDClose()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651 0.9.4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
652 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 0.9.3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655 Mouse motion event now includes relative motion information:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 Sint16 event->motion.xrel, Sint16 event->motion.yrel
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657
74212992fb08 Initial revision
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658 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT
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659 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
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660
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661 0.9.2:
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662 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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663
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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664 0.9.1:
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665 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
74212992fb08 Initial revision
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666 automatically mapped on blit.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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667
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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668 0.8.0:
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669 SDL stable release