annotate WhatsNew @ 655:9c42ee1b7d77

Date: Thu, 24 Apr 2003 15:13:47 -0400 From: Shawn Kirst Subject: SDL-1.2.5 patch to add ARB_multisample support Attached is a patch I have written for SDL-1.2.5 that adds ARB_multisample support. I only have the X11 and Win32 video patched. The Win32 patch also adds support for WGL_ARB_pixel_format, as it was required for getting a multisample capable pixel format. No additional GL header files are required to compile on either platform (though you need an up-to-date glx.h for X11). Requesting a multisample pixel format is made possible using SDL_GL_SetAttribute with the two new SDL_GLattr's I've added (SDL_GL_SAMPLE_BUFFERS and SDL_GL_SAMPLES). I've been using SDL in my projects for quite a while now, so I am happy to contribute back to the project. Now you can have and control FSAA in your SDL/GL apps at the application level!
author Sam Lantinga <slouken@libsdl.org>
date Tue, 22 Jul 2003 15:10:06 +0000
parents 12a21d82a060
children 864e2d2a9a55
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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 1.2.6:
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7 Added SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject()
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9 Added SDL_GL_SAMPLE_BUFFERS and SDL_GL_SAMPLES for FSAA support
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10
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24edec3cafe4 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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11 1.2.5:
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12 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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13
24edec3cafe4 Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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14 Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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15
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16 1.2.0:
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17 Added SDL_VIDEOEXPOSE event to signal that the screen needs to
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18 be redrawn. This is currently only delivered to OpenGL windows
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19 on X11, though it may be delivered in the future when the video
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20 memory is lost under DirectX.
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21
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22 1.1.8:
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23 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
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24 that has no title bar or frame decoration. Fullscreen video
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25 modes automatically have this flag set.
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26
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27 Added a function to query the clipping rectangle for a surface:
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28 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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29
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30 Added a function to query the current event filter:
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31 SDL_EventFilter SDL_GetEventFilter(void)
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32
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33 If you pass -1 to SDL_ShowCursor(), it won't change the current
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34 cursor visibility state, but will still return it.
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35
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36 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
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37 you can nest them as deep as you want, as long as each lock call
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38 has a matching unlock call. The surface remains locked until the
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39 last matching unlock call.
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40
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41 Note that you may not blit to or from a locked surface.
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42
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43 1.1.7:
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44 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
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45 arrays of Uint16 values instead of Uint8 values. For the most part,
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46 you can just take your old values and shift them up 8 bits to get
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47 new correct values for your gamma ramps.
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48
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49 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
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50 and SDL will try to RLE accelerate colorkey and alpha blits in the
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51 resulting surface.
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52
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53 1.1.6:
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54 Added a function to return the thread ID of a specific thread:
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55 Uint32 SDL_GetThreadID(SDL_Thread *thread)
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56 If 'thread' is NULL, this function returns the id for this thread.
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57
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58 1.1.5:
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59 The YUV overlay structure has been changed to use an array of
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60 pitches and pixels representing the planes of a YUV image, to
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61 better enable hardware acceleration. The YV12 and IYUV formats
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62 each have three planes, corresponding to the Y, U, and V portions
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63 of the image, while packed pixel YUV formats just have one plane.
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64
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65 For palettized mode (8bpp), the screen colormap is now split in
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66 a physical and a logical palette. The physical palette determines
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67 what colours the screen pixels will get when displayed, and the
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68 logical palette controls the mapping from blits to/from the screen.
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69 A new function, SDL_SetPalette() has been added to change
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70 logical and physical palettes separately. SDL_SetColors() works
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71 just as before, and is equivalent to calling SDL_SetPalette() with
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72 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
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73
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74 SDL_BlitSurface() no longer modifies the source rectangle, only the
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75 destination rectangle. The width/height members of the destination
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76 rectangle are ignored, only the position is used.
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77
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78 The old source clipping function SDL_SetClipping() has been replaced
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79 with a more useful function to set the destination clipping rectangle:
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80 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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81
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82 Added a function to see what subsystems have been initialized:
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83 Uint32 SDL_WasInit(Uint32 flags)
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84
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85 The Big Alpha Flip: SDL now treats alpha as opacity like everybody
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86 else, and not as transparency:
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87
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88 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
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89 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
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90 Values between 0 and 255 vary from fully transparent to fully opaque.
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91
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92 New functions:
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93 SDL_DisplayFormatAlpha()
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94 Returns a surface converted to a format with alpha-channel
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95 that can be blit efficiently to the screen. (In other words,
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96 like SDL_DisplayFormat() but the resulting surface has
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97 an alpha channel.) This is useful for surfaces with alpha.
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98 SDL_MapRGBA()
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99 Works as SDL_MapRGB() but takes an additional alpha parameter.
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100 SDL_GetRGBA()
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101 Works as SDL_GetRGB() but also returns the alpha value
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102 (SDL_ALPHA_OPAQUE for formats without an alpha channel)
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103
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104 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
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105 the [0..255] interval. Previously, SDL_GetRGB() would return
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106 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
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107 (N.B.: This is broken for bit fields < 3 bits.)
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108
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109 SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
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110
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111 SDL_SetAlpha() can now be used for both setting the per-surface
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112 alpha, using the new way of thinking of alpha, and also to enable
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113 and disable per-pixel alpha blending for surfaces with an alpha
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114 channel:
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115 To disable alpha blending:
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116 SDL_SetAlpha(surface, 0, 0);
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117 To re-enable alpha blending:
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118 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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119 Surfaces with an alpha channel have blending enabled by default.
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120
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121 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
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122 RLE acceleration of blits, just as like with SDL_SetColorKey().
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123 This flag can be set for both surfaces with an alpha channel
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124 and surfaces with an alpha value set by SDL_SetAlpha().
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125 As always, RLE surfaces must be locked before pixel access is
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126 allowed, and unlocked before any other SDL operations are done
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127 on it.
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128
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129 The blit semantics for surfaces with and without alpha and colorkey
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130 have now been defined:
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131
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132 RGBA->RGB:
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133 SDL_SRCALPHA set:
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134 alpha-blend (using alpha-channel).
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135 SDL_SRCCOLORKEY ignored.
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136 SDL_SRCALPHA not set:
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137 copy RGB.
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138 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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139 RGB values of the source colour key, ignoring alpha in the
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140 comparison.
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141
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142 RGB->RGBA:
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143 SDL_SRCALPHA set:
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144 alpha-blend (using the source per-surface alpha value);
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145 set destination alpha to opaque.
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146 SDL_SRCALPHA not set:
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147 copy RGB, set destination alpha to opaque.
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148 both:
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149 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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150 source colour key.
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151
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152 RGBA->RGBA:
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153 SDL_SRCALPHA set:
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154 alpha-blend (using the source alpha channel) the RGB values;
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155 leave destination alpha untouched. [Note: is this correct?]
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156 SDL_SRCCOLORKEY ignored.
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157 SDL_SRCALPHA not set:
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158 copy all of RGBA to the destination.
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159 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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160 RGB values of the source colour key, ignoring alpha in the
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161 comparison.
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162
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163 RGB->RGB:
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164 SDL_SRCALPHA set:
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165 alpha-blend (using the source per-surface alpha value).
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166 SDL_SRCALPHA not set:
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167 copy RGB.
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168 both:
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169 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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170 source colour key.
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171
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172 As a special case, blits from surfaces with per-surface alpha
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173 value of 128 (50% transparency) are optimised and much faster
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174 than other alpha values. This does not apply to surfaces with
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175 alpha channels (per-pixel alpha).
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176
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177 New functions for manipulating the gamma of the display have
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178 been added:
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179 int SDL_SetGamma(float red, float green, float blue);
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180 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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181 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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182 Gamma ramps are tables with 256 entries which map the screen color
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183 components into actually displayed colors. For an example of
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184 implementing gamma correction and gamma fades, see test/testgamma.c
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185 Gamma control is not supported on all hardware.
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186
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187 1.1.4:
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188 The size of the SDL_CDtrack structure changed from 8 to 12 bytes
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189 as the size of the length member was extended to 32 bits.
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190
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191 You can now use SDL for 2D blitting with a GL mode by passing the
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192 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
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193 32 bpp, and the data in the framebuffer is put into the GL scene
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194 when you call SDL_UpdateRects(), and the scene will be visible
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195 when you call SDL_GL_SwapBuffers().
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196
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197 Run the "testgl" test program with the -logo command line option
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198 to see an example of this blending of 2D and 3D in SDL.
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199
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200 1.1.3:
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201 Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
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202
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203 Added resizable window support - just add SDL_RESIZABLE to the
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204 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
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205 See SDL_events.h for details on the new SDL_ResizeEvent structure.
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206
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207 Added condition variable support, based on mutexes and semaphores.
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208 SDL_CreateCond()
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209 SDL_DestroyCond()
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210 SDL_CondSignal()
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211 SDL_CondBroadcast()
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212 SDL_CondWait()
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213 SDL_CondTimedWait()
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214 The new function prototypes are in SDL_mutex.h
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215
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216 Added counting semaphore support, based on the mutex primitive.
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217 SDL_CreateSemaphore()
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218 SDL_DestroySemaphore()
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219 SDL_SemWait()
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220 SDL_SemTryWait()
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221 SDL_SemWaitTimeout()
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222 SDL_SemPost()
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223 SDL_SemValue()
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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 support for asynchronous blitting. To take advantage of this,
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227 you must set the SDL_ASYNCBLIT flag when setting the video mode and
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228 creating surfaces that you want accelerated in this way. You must
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229 lock surfaces that have this flag set, and the lock will block until
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230 any queued blits have completed.
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231
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232 Added YUV video overlay support.
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233 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
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234 This function creates an overlay surface:
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235 SDL_CreateYUVOverlay()
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236 You must lock and unlock the overlay to get access to the data:
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237 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
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238 You can then display the overlay:
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239 SDL_DisplayYUVOverlay()
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240 You must free the overlay when you are done using it:
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241 SDL_FreeYUVOverlay()
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242 See SDL_video.h for the full function prototypes.
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243
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244 The joystick hat position constants have been changed:
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245 Old constant New constant
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246 ------------ ------------
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247 0 SDL_HAT_CENTERED
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248 1 SDL_HAT_UP
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249 2 SDL_HAT_RIGHTUP
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250 3 SDL_HAT_RIGHT
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251 4 SDL_HAT_RIGHTDOWN
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252 5 SDL_HAT_DOWN
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253 6 SDL_HAT_LEFTDOWN
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254 7 SDL_HAT_LEFT
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255 8 SDL_HAT_LEFTUP
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256 The new constants are bitmasks, so you can check for the
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257 individual axes like this:
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258 if ( hat_position & SDL_HAT_UP ) {
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259 }
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260 and you'll catch left-up, up, and right-up.
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261
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262 1.1.2:
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263 Added multiple timer support:
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264 SDL_AddTimer() and SDL_RemoveTimer()
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265
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266 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
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267
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268 1.1.0:
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269 Added initial OpenGL support.
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270 First set GL attributes (such as RGB depth, alpha depth, etc.)
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271 SDL_GL_SetAttribute()
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272 Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
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273 Perform all of your normal GL drawing.
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274 Finally swap the buffers with the new SDL function:
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275 SDL_GL_SwapBuffers()
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276 See the new 'testgl' test program for an example of using GL with SDL.
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277
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278 You can load GL extension functions by using the function:
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279 SDL_GL_LoadProcAddress()
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280
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281 Added functions to initialize and cleanup specific SDL subsystems:
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282 SDL_InitSubSystem() and SDL_QuitSubSystem()
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283
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284 Added user-defined event type:
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285 typedef struct {
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286 Uint8 type;
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287 int code;
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288 void *data1;
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289 void *data2;
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290 } SDL_UserEvent;
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291 This structure is in the "user" member of an SDL_Event.
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292
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293 Added a function to push events into the event queue:
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294 SDL_PushEvent()
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295
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296 Example of using the new SDL user-defined events:
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297 {
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298 SDL_Event event;
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299
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300 event.type = SDL_USEREVENT;
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301 event.user.code = my_event_code;
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302 event.user.data1 = significant_data;
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303 event.user.data2 = 0;
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304 SDL_PushEvent(&event);
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305 }
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306
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307 Added a function to get mouse deltas since last query:
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308 SDL_GetRelativeMouseState()
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309
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310 Added a boolean datatype to SDL_types.h:
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311 SDL_bool = { SDL_TRUE, SDL_FALSE }
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312
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313 Added a function to get the current audio status:
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314 SDL_GetAudioState();
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315 It returns one of:
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316 SDL_AUDIO_STOPPED,
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317 SDL_AUDIO_PLAYING,
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318 SDL_AUDIO_PAUSED
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319
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320 Added an AAlib driver (ASCII Art) - by Stephane Peter.
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321
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322 1.0.6:
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323 The input grab state is reset after each call to SDL_SetVideoMode().
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324 The input is grabbed by default in fullscreen mode, and ungrabbed in
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325 windowed mode. If you want to set input grab to a particular value,
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326 you should set it after each call to SDL_SetVideoMode().
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327
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328 1.0.5:
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329 Exposed SDL_AudioInit(), SDL_VideoInit()
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330 Added SDL_AudioDriverName() and SDL_VideoDriverName()
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331
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332 Added new window manager function:
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333 SDL_WM_ToggleFullScreen()
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334 This is currently implemented only on Linux
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335
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336 The ALT-ENTER code has been removed - it's not appropriate for a
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337 lib to bind keys when they aren't even emergency escape sequences.
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338
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339 ALT-ENTER functionality can be implemented with the following code:
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340
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341 int Handle_AltEnter(const SDL_Event *event)
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342 {
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343 if ( event->type == SDL_KEYDOWN ) {
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344 if ( (event->key.keysym.sym == SDLK_RETURN) &&
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345 (event->key.keysym.mod & KMOD_ALT) ) {
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346 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
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347 return(0);
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348 }
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349 }
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350 return(1);
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351 }
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352 SDL_SetEventFilter(Handle_AltEnter);
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353
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354 1.0.3:
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355 Under X11, if you grab the input and hide the mouse cursor,
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356 the mouse will go into a "relative motion" mode where you
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357 will always get relative motion events no matter how far in
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358 each direction you move the mouse - relative motion is not
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359 bounded by the edges of the window (though the absolute values
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360 of the mouse positions are clamped by the size of the window).
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361 The SVGAlib, framebuffer console, and DirectInput drivers all
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362 have this behavior naturally, and the GDI and BWindow drivers
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363 never go into "relative motion" mode.
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364
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365 1.0.2:
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366 Added a function to enable keyboard repeat:
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367 SDL_EnableKeyRepeat()
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368
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369 Added a function to grab the mouse and keyboard input
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370 SDL_WM_GrabInput()
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371
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372 Added a function to iconify the window.
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373 SDL_WM_IconifyWindow()
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374 If this function succeeds, the application will receive an event
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375 signaling SDL_APPACTIVE event
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376
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377 1.0.1:
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378 Added constants to SDL_audio.h for 16-bit native byte ordering:
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379 AUDIO_U16SYS, AUDIO_S16SYS
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380
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381 1.0.0:
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382 New public release
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383
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384 Version 0.11:
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385
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386 0.11.5:
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387 A new function SDL_GetVideoSurface() has been added, and returns
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388 a pointer to the current display surface.
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389
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390 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
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391 a new function SDL_CreateRGBSurfaceFrom() has been added to allow
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392 creating an SDL surface from an existing pixel data buffer.
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393
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394 Added SDL_GetRGB() to the headers and documentation.
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395
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396 0.11.4:
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397 SDL_SetLibraryPath() is no longer meaningful, and has been removed.
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398
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399 0.11.3:
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400 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
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401 installing fatal signal handlers on operating systems that support
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402 them.
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403
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404 Version 0.9:
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405
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406 0.9.15:
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407 SDL_CreateColorCursor() has been removed. Color cursors should
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408 be implemented as sprites, blitted by the application when the
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409 cursor moves. To get smooth color cursor updates when the app
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410 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
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411 allows you to handle the mouse motion in another thread from an
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412 event filter function, but is currently only supported by Linux
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413 and BeOS. Note that you'll have to protect the display surface
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414 from multi-threaded access by using mutexes if you do this.
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415
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416 Thread-safe surface support has been removed from SDL.
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417 This makes blitting somewhat faster, by removing SDL_MiddleBlit().
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418 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
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419 You can make your surfaces thread-safe by allocating your own
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420 mutex and making lock/unlock calls around accesses to your surface.
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421
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422 0.9.14:
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423 SDL_GetMouseState() now takes pointers to int rather than Uint16.
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424
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425 If you set the SDL_WINDOWID environment variable under UNIX X11,
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426 SDL will use that as the main window instead of creating it's own.
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427 This is an unsupported extension to SDL, and not portable at all.
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428
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429 0.9.13:
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430 Added a function SDL_SetLibraryPath() which can be used to specify
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431 the directory containing the SDL dynamic libraries. This is useful
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432 for commercial applications which ship with particular versions
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433 of the libraries, and for security on multi-user systems.
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434 If this function is not used, the default system directories are
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435 searched using the native dynamic object loading mechanism.
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436
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437 In order to support C linkage under Visual C++, you must declare
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438 main() without any return type:
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439 main(int argc, char *argv[]) {
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440 /* Do the program... */
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441 return(0);
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442 }
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443 C++ programs should also return a value if compiled under VC++.
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444
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445 The blit_endian member of the SDL_VideoInfo struct has been removed.
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446
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447 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
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448 is now no longer any function to translate a keysym to a character.
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449
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450 The SDL_keysym structure has been extended with a 'scancode' and
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451 'unicode' member. The 'scancode' is a hardware specific scancode
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452 for the key that was pressed, and may be 0. The 'unicode' member
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453 is a 16-bit UNICODE translation of the key that was pressed along
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454 with any modifiers or compose keys that have been pressed.
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455 If no UNICODE translation exists for the key, 'unicode' will be 0.
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456
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457 Added a function SDL_EnableUNICODE() to enable/disable UNICODE
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458 translation of character keypresses. Translation defaults off.
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459
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460 To convert existing code to use the new API, change code which
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461 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
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462 and change code which uses it to get the ASCII value of a sym to
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463 use the 'unicode' member of the event keysym.
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464
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465 0.9.12:
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466 There is partial support for 64-bit datatypes. I don't recommend
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467 you use this if you have a choice, because 64-bit datatypes are not
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468 supported on many platforms. On platforms for which it is supported,
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469 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
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470 you can use the Uint64 and Sint64 datatypes.
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471
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472 Added functions to SDL_endian.h to support 64-bit datatypes:
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473 SDL_SwapLE64(), SDL_SwapBE64(),
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474 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
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475
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476 A new member "len_ratio" has been added to the SDL_AudioCVT structure,
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477 and allows you to determine either the original buffer length or the
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478 converted buffer length, given the other.
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479
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480 A new function SDL_FreeWAV() has been added to the API to free data
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481 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since
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482 the gcc compiled DLL uses a different heap than VC++ compiled apps.
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483
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484 SDL now has initial support for international keyboards using the
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485 Latin character set.
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486 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
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487 compile-time variable, or you can set the environment variable
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488 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire.
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489 The valid values for these variables can be found in SDL_keyboard.c
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490
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diff changeset
491 Full support for German and French keyboards under X11 is implemented.
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diff changeset
492
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parents:
diff changeset
493 0.9.11:
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diff changeset
494 The THREADED_EVENTS compile-time define has been replaced with the
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parents:
diff changeset
495 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
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diff changeset
496 SDL will create a separate thread to perform input event handling.
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diff changeset
497 If this flag is passed to SDL_Init(), and the OS doesn't support
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diff changeset
498 event handling in a separate thread, SDL_Init() will fail.
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diff changeset
499 Be sure to add calls to SDL_Delay() in your main thread to allow
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parents:
diff changeset
500 the OS to schedule your event thread, or it may starve, leading
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parents:
diff changeset
501 to slow event delivery and/or dropped events.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 Currently MacOS and Win32 do not support this flag, while BeOS
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 and Linux do support it. I recommend that your application only
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diff changeset
504 use this flag if absolutely necessary.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505
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diff changeset
506 The SDL thread function passed to SDL_CreateThread() now returns a
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diff changeset
507 status. This status can be retrieved by passing a non-NULL pointer
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parents:
diff changeset
508 as the 'status' argument to SDL_WaitThread().
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diff changeset
509
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parents:
diff changeset
510 The volume parameter to SDL_MixAudio() has been increased in range
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parents:
diff changeset
511 from (0-8) to (0-128)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512
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parents:
diff changeset
513 SDL now has a data source abstraction which can encompass a file,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 an area of memory, or any custom object you can envision. It uses
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 these abstractions, SDL_RWops, in the endian read/write functions,
74212992fb08 Initial revision
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parents:
diff changeset
516 and the built-in WAV and BMP file loaders. This means you can load
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 WAV chunks from memory mapped files, compressed archives, network
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 pipes, or anything else that has a data read abstraction.
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parents:
diff changeset
519
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parents:
diff changeset
520 There are three built-in data source abstractions:
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parents:
diff changeset
521 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem()
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 along with a generic data source allocation function:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 SDL_AllocRW()
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 These data sources can be used like stdio file pointers with the
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 following convenience functions:
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parents:
diff changeset
526 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose()
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parents:
diff changeset
527 These functions are defined in the new header file "SDL_rwops.h"
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parents:
diff changeset
528
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diff changeset
529 The endian swapping functions have been turned into macros for speed
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 the endianness of the host system.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533
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parents:
diff changeset
534 The endian read/write functions now take an SDL_RWops pointer
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 instead of a stdio FILE pointer, to support the new data source
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 abstraction.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537
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parents:
diff changeset
538 The SDL_*LoadWAV() functions have been replaced with a single
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 first parameter, and a flag whether or not to automatically
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 free it as the second parameter. SDL_LoadWAV() is a macro for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 backward compatibility and convenience:
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parents:
diff changeset
543 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544
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parents:
diff changeset
545 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 with a single function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 are macros for backward compatibility and convenience:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...);
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diff changeset
551 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...);
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parents:
diff changeset
552 Note that these functions use SDL_RWseek() extensively, and should
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 not be used on pipes or other non-seekable data sources.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 0.9.10:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 extended to support multiple types of display drivers, as well as
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 safe access to the X11 display when THREADED_EVENTS is enabled.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 The new structures are documented in the SDL_syswm.h header file.
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560
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parents:
diff changeset
561 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 should now work properly, as well as the "Windows" keys on US
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 keyboards.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 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
566 instead of trying to open each block device on the system.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 The CD must be listed in /etc/fstab as using the iso9660 filesystem.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 On Linux, if you define THREADED_EVENTS at compile time, a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 thread will be spawned to gather X events asynchronously from the
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 graphics updates. This hasn't been extensively tested, but it does
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 provide a means of handling keyboard and mouse input in a separate
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 thread from the graphics thread. (This is now enabled by default.)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 A special access function SDL_PeepEvents() allows you to manipulate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 the event queue in a thread-safe manner, including peeking at events,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 removing events of a specified type, and adding new events of arbitrary
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 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
579
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 If you use SDL_PeepEvents() to gather events, then the main graphics
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 thread needs to call SDL_PumpEvents() periodically to drive the event
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 loop and generate input events. This is not necessary if SDL has been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 compiled with THREADED_EVENTS defined, but doesn't hurt.
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 new function SDL_ThreadID() returns the identifier associated with
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 the current thread.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 0.9.9:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 The AUDIO_STEREO format flag has been replaced with a new 'channels'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 member of the SDL_AudioSpec structure. The channels are 1 for mono
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 audio, and 2 for stereo audio. In the future more channels may be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 supported for 3D surround sound.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 The SDL_MixAudio() function now takes an additional volume parameter,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 which should be set to SDL_MIX_MAXVOLUME for compatibility with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 original function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 The CD-ROM functions which take a 'cdrom' parameter can now be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 passed NULL, and will act on the last successfully opened CD-ROM.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 0.9.8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 0.9.7:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 0.9.6:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 Added a fast rectangle fill function: SDL_FillRect()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 Addition of a useful function for getting info on the video hardware:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 const SDL_VideoInfo *SDL_GetVideoInfo(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 This function replaces SDL_GetDisplayFormat().
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 Initial support for double-buffering:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 Update the screen with a new function: SDL_Flip()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 SDL_AllocSurface() takes two new flags:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 and if the hardware supports hardware acceleration of colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 between two surfaces in video memory, to place the surface in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 memory if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 SDL_SRCALPHA means that the surface will be used for alpha blits and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 if the hardware supports hardware acceleration of alpha blits between
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 two surfaces in video memory, to place the surface in video memory
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 SDL_HWSURFACE now means that the surface will be created with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 same format as the display surface, since having surfaces in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 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
630 blit surfaces with different surface formats in video memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 0.9.5:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 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
634 that the icon consists of the entire image.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 SDL_LowerBlit() is back -- but don't use it on the display surface.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 It is exactly the same as SDL_MiddleBlit(), but doesn't check for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 thread safety.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641 a FILE pointer instead of a file name.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 Added CD-ROM audio control API:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 SDL_CDNumDrives()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 SDL_CDName()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 SDL_CDOpen()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 SDL_CDStatus()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 SDL_CDPlayTracks()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649 SDL_CDPlay()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 SDL_CDPause()
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651 SDL_CDResume()
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652 SDL_CDStop()
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Sam Lantinga <slouken@lokigames.com>
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653 SDL_CDEject()
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Sam Lantinga <slouken@lokigames.com>
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654 SDL_CDClose()
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655
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656 0.9.4:
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657 No changes, bugfixes only.
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658
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659 0.9.3:
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660 Mouse motion event now includes relative motion information:
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661 Sint16 event->motion.xrel, Sint16 event->motion.yrel
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662
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663 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT
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664 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
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665
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666 0.9.2:
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667 No changes, bugfixes only.
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Sam Lantinga <slouken@lokigames.com>
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668
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669 0.9.1:
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670 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
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671 automatically mapped on blit.
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672
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Sam Lantinga <slouken@lokigames.com>
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673 0.8.0:
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674 SDL stable release