annotate WhatsNew @ 292:eadc0746dfaf

Added SDL_LockRect() and SDL_UnlockRect() Incorporated XFree86 extension libraries into the source
author Sam Lantinga <slouken@libsdl.org>
date Tue, 05 Mar 2002 19:55:32 +0000
parents 74212992fb08
children d2d48e10f370
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
292
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6 1.2.4:
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7 Added SDL_LockRect() and SDL_UnlockRect() to lock a portion of a
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8 surface. This may be more efficient than a full lock if you are
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9 using a hardware surface and plan to make a few changes to small
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10 areas in the surface.
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11
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12 1.2.0:
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13 Added SDL_VIDEOEXPOSE event to signal that the screen needs to
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14 be redrawn. This is currently only delivered to OpenGL windows
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15 on X11, though it may be delivered in the future when the video
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16 memory is lost under DirectX.
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17
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18 1.1.8:
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19 You can pass SDL_NOFRAME to SDL_VideoMode() to create a window
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20 that has no title bar or frame decoration. Fullscreen video
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21 modes automatically have this flag set.
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22
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23 Added a function to query the clipping rectangle for a surface:
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24 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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25
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26 Added a function to query the current event filter:
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27 SDL_EventFilter SDL_GetEventFilter(void)
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28
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29 If you pass -1 to SDL_ShowCursor(), it won't change the current
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30 cursor visibility state, but will still return it.
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31
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32 SDL_LockSurface() and SDL_UnlockSurface() are recursive, meaning
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33 you can nest them as deep as you want, as long as each lock call
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34 has a matching unlock call. The surface remains locked until the
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35 last matching unlock call.
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36
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37 Note that you may not blit to or from a locked surface.
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38
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39 1.1.7:
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40 The SDL_SetGammaRamp() and SDL_GetGammaRamp() functions now take
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41 arrays of Uint16 values instead of Uint8 values. For the most part,
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42 you can just take your old values and shift them up 8 bits to get
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43 new correct values for your gamma ramps.
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44
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45 You can pass SDL_RLEACCEL in flags passed to SDL_ConvertSurface()
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46 and SDL will try to RLE accelerate colorkey and alpha blits in the
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47 resulting surface.
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48
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49 1.1.6:
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50 Added a function to return the thread ID of a specific thread:
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51 Uint32 SDL_GetThreadID(SDL_Thread *thread)
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52 If 'thread' is NULL, this function returns the id for this thread.
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53
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54 1.1.5:
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55 The YUV overlay structure has been changed to use an array of
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56 pitches and pixels representing the planes of a YUV image, to
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57 better enable hardware acceleration. The YV12 and IYUV formats
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58 each have three planes, corresponding to the Y, U, and V portions
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59 of the image, while packed pixel YUV formats just have one plane.
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60
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61 For palettized mode (8bpp), the screen colormap is now split in
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62 a physical and a logical palette. The physical palette determines
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63 what colours the screen pixels will get when displayed, and the
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64 logical palette controls the mapping from blits to/from the screen.
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65 A new function, SDL_SetPalette() has been added to change
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66 logical and physical palettes separately. SDL_SetColors() works
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67 just as before, and is equivalent to calling SDL_SetPalette() with
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68 a flag argument of (SDL_LOGPAL|SDL_PHYSPAL).
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69
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70 SDL_BlitSurface() no longer modifies the source rectangle, only the
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71 destination rectangle. The width/height members of the destination
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72 rectangle are ignored, only the position is used.
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73
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74 The old source clipping function SDL_SetClipping() has been replaced
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75 with a more useful function to set the destination clipping rectangle:
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76 SDL_bool SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect)
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77
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78 Added a function to see what subsystems have been initialized:
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79 Uint32 SDL_WasInit(Uint32 flags)
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80
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81 The Big Alpha Flip: SDL now treats alpha as opacity like everybody
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82 else, and not as transparency:
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83
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84 A new cpp symbol: SDL_ALPHA_OPAQUE is defined as 255
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85 A new cpp symbol: SDL_ALPHA_TRANSPARENT is defined as 0
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86 Values between 0 and 255 vary from fully transparent to fully opaque.
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87
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88 New functions:
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89 SDL_DisplayFormatAlpha()
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90 Returns a surface converted to a format with alpha-channel
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91 that can be blit efficiently to the screen. (In other words,
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92 like SDL_DisplayFormat() but the resulting surface has
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93 an alpha channel.) This is useful for surfaces with alpha.
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94 SDL_MapRGBA()
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95 Works as SDL_MapRGB() but takes an additional alpha parameter.
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96 SDL_GetRGBA()
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97 Works as SDL_GetRGB() but also returns the alpha value
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98 (SDL_ALPHA_OPAQUE for formats without an alpha channel)
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99
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100 Both SDL_GetRGB() and SDL_GetRGBA() now always return values in
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101 the [0..255] interval. Previously, SDL_GetRGB() would return
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102 (0xf8, 0xfc, 0xf8) for a completely white pixel in RGB565 format.
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103 (N.B.: This is broken for bit fields < 3 bits.)
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104
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105 SDL_MapRGB() returns pixels in which the alpha channel is set opaque.
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106
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107 SDL_SetAlpha() can now be used for both setting the per-surface
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108 alpha, using the new way of thinking of alpha, and also to enable
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109 and disable per-pixel alpha blending for surfaces with an alpha
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110 channel:
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111 To disable alpha blending:
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112 SDL_SetAlpha(surface, 0, 0);
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113 To re-enable alpha blending:
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114 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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115 Surfaces with an alpha channel have blending enabled by default.
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116
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117 SDL_SetAlpha() now accepts SDL_RLEACCEL as a flag, which requests
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118 RLE acceleration of blits, just as like with SDL_SetColorKey().
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119 This flag can be set for both surfaces with an alpha channel
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120 and surfaces with an alpha value set by SDL_SetAlpha().
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121 As always, RLE surfaces must be locked before pixel access is
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122 allowed, and unlocked before any other SDL operations are done
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123 on it.
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124
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125 The blit semantics for surfaces with and without alpha and colorkey
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126 have now been defined:
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127
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128 RGBA->RGB:
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129 SDL_SRCALPHA set:
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130 alpha-blend (using alpha-channel).
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131 SDL_SRCCOLORKEY ignored.
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132 SDL_SRCALPHA not set:
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133 copy RGB.
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134 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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135 RGB values of the source colour key, ignoring alpha in the
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136 comparison.
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137
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138 RGB->RGBA:
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139 SDL_SRCALPHA set:
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140 alpha-blend (using the source per-surface alpha value);
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141 set destination alpha to opaque.
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142 SDL_SRCALPHA not set:
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143 copy RGB, set destination alpha to opaque.
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144 both:
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145 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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146 source colour key.
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147
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148 RGBA->RGBA:
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149 SDL_SRCALPHA set:
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150 alpha-blend (using the source alpha channel) the RGB values;
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151 leave destination alpha untouched. [Note: is this correct?]
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152 SDL_SRCCOLORKEY ignored.
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153 SDL_SRCALPHA not set:
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154 copy all of RGBA to the destination.
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155 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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156 RGB values of the source colour key, ignoring alpha in the
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157 comparison.
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158
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159 RGB->RGB:
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160 SDL_SRCALPHA set:
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161 alpha-blend (using the source per-surface alpha value).
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162 SDL_SRCALPHA not set:
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163 copy RGB.
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164 both:
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165 if SDL_SRCCOLORKEY set, only copy the pixels matching the
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166 source colour key.
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167
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168 As a special case, blits from surfaces with per-surface alpha
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169 value of 128 (50% transparency) are optimised and much faster
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170 than other alpha values. This does not apply to surfaces with
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171 alpha channels (per-pixel alpha).
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172
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173 New functions for manipulating the gamma of the display have
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174 been added:
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175 int SDL_SetGamma(float red, float green, float blue);
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176 int SDL_SetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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177 int SDL_GetGammaRamp(Uint8 *red, Uint8 *green, Uint8 *blue);
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178 Gamma ramps are tables with 256 entries which map the screen color
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179 components into actually displayed colors. For an example of
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180 implementing gamma correction and gamma fades, see test/testgamma.c
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181 Gamma control is not supported on all hardware.
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182
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183 1.1.4:
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184 The size of the SDL_CDtrack structure changed from 8 to 12 bytes
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185 as the size of the length member was extended to 32 bits.
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186
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187 You can now use SDL for 2D blitting with a GL mode by passing the
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188 SDL_OPENGLBLIT flag to SDL_SetVideoMode(). You can specify 16 or
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189 32 bpp, and the data in the framebuffer is put into the GL scene
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190 when you call SDL_UpdateRects(), and the scene will be visible
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191 when you call SDL_GL_SwapBuffers().
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192
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193 Run the "testgl" test program with the -logo command line option
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194 to see an example of this blending of 2D and 3D in SDL.
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195
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196 1.1.3:
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197 Added SDL_FreeRW() to the API, to complement SDL_AllocRW()
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198
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199 Added resizable window support - just add SDL_RESIZABLE to the
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200 SDL_SetVideoMode() flags, and then wait for SDL_VIDEORESIZE events.
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201 See SDL_events.h for details on the new SDL_ResizeEvent structure.
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202
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203 Added condition variable support, based on mutexes and semaphores.
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204 SDL_CreateCond()
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205 SDL_DestroyCond()
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206 SDL_CondSignal()
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207 SDL_CondBroadcast()
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208 SDL_CondWait()
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209 SDL_CondTimedWait()
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210 The new function prototypes are in SDL_mutex.h
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211
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212 Added counting semaphore support, based on the mutex primitive.
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213 SDL_CreateSemaphore()
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214 SDL_DestroySemaphore()
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215 SDL_SemWait()
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216 SDL_SemTryWait()
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217 SDL_SemWaitTimeout()
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218 SDL_SemPost()
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219 SDL_SemValue()
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220 The new function prototypes are in SDL_mutex.h
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221
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222 Added support for asynchronous blitting. To take advantage of this,
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223 you must set the SDL_ASYNCBLIT flag when setting the video mode and
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224 creating surfaces that you want accelerated in this way. You must
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225 lock surfaces that have this flag set, and the lock will block until
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226 any queued blits have completed.
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227
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228 Added YUV video overlay support.
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229 The supported YUV formats are: YV12, IYUV, YUY2, UYVY, and YVYU.
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230 This function creates an overlay surface:
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231 SDL_CreateYUVOverlay()
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232 You must lock and unlock the overlay to get access to the data:
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233 SDL_LockYUVOverlay() SDL_UnlockYUVOverlay()
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234 You can then display the overlay:
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235 SDL_DisplayYUVOverlay()
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236 You must free the overlay when you are done using it:
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237 SDL_FreeYUVOverlay()
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238 See SDL_video.h for the full function prototypes.
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239
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240 The joystick hat position constants have been changed:
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241 Old constant New constant
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242 ------------ ------------
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243 0 SDL_HAT_CENTERED
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244 1 SDL_HAT_UP
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245 2 SDL_HAT_RIGHTUP
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246 3 SDL_HAT_RIGHT
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247 4 SDL_HAT_RIGHTDOWN
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248 5 SDL_HAT_DOWN
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249 6 SDL_HAT_LEFTDOWN
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250 7 SDL_HAT_LEFT
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251 8 SDL_HAT_LEFTUP
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252 The new constants are bitmasks, so you can check for the
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253 individual axes like this:
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254 if ( hat_position & SDL_HAT_UP ) {
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255 }
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256 and you'll catch left-up, up, and right-up.
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257
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258 1.1.2:
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259 Added multiple timer support:
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260 SDL_AddTimer() and SDL_RemoveTimer()
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261
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262 SDL_WM_SetIcon() now respects the icon colorkey if mask is NULL.
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263
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264 1.1.0:
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265 Added initial OpenGL support.
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266 First set GL attributes (such as RGB depth, alpha depth, etc.)
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267 SDL_GL_SetAttribute()
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268 Then call SDL_SetVideoMode() with the SDL_OPENGL flag.
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269 Perform all of your normal GL drawing.
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270 Finally swap the buffers with the new SDL function:
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271 SDL_GL_SwapBuffers()
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272 See the new 'testgl' test program for an example of using GL with SDL.
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273
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274 You can load GL extension functions by using the function:
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275 SDL_GL_LoadProcAddress()
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276
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277 Added functions to initialize and cleanup specific SDL subsystems:
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278 SDL_InitSubSystem() and SDL_QuitSubSystem()
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279
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280 Added user-defined event type:
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281 typedef struct {
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282 Uint8 type;
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283 int code;
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284 void *data1;
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285 void *data2;
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286 } SDL_UserEvent;
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287 This structure is in the "user" member of an SDL_Event.
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288
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289 Added a function to push events into the event queue:
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290 SDL_PushEvent()
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291
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292 Example of using the new SDL user-defined events:
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293 {
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294 SDL_Event event;
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295
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296 event.type = SDL_USEREVENT;
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297 event.user.code = my_event_code;
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298 event.user.data1 = significant_data;
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299 event.user.data2 = 0;
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300 SDL_PushEvent(&event);
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301 }
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302
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303 Added a function to get mouse deltas since last query:
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304 SDL_GetRelativeMouseState()
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305
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306 Added a boolean datatype to SDL_types.h:
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307 SDL_bool = { SDL_TRUE, SDL_FALSE }
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308
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309 Added a function to get the current audio status:
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310 SDL_GetAudioState();
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311 It returns one of:
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312 SDL_AUDIO_STOPPED,
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313 SDL_AUDIO_PLAYING,
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314 SDL_AUDIO_PAUSED
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315
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316 Added an AAlib driver (ASCII Art) - by Stephane Peter.
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317
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318 1.0.6:
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319 The input grab state is reset after each call to SDL_SetVideoMode().
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320 The input is grabbed by default in fullscreen mode, and ungrabbed in
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321 windowed mode. If you want to set input grab to a particular value,
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322 you should set it after each call to SDL_SetVideoMode().
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323
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324 1.0.5:
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325 Exposed SDL_AudioInit(), SDL_VideoInit()
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326 Added SDL_AudioDriverName() and SDL_VideoDriverName()
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327
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328 Added new window manager function:
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329 SDL_WM_ToggleFullScreen()
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330 This is currently implemented only on Linux
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331
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332 The ALT-ENTER code has been removed - it's not appropriate for a
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333 lib to bind keys when they aren't even emergency escape sequences.
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334
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335 ALT-ENTER functionality can be implemented with the following code:
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336
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337 int Handle_AltEnter(const SDL_Event *event)
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338 {
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339 if ( event->type == SDL_KEYDOWN ) {
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340 if ( (event->key.keysym.sym == SDLK_RETURN) &&
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341 (event->key.keysym.mod & KMOD_ALT) ) {
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342 SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
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343 return(0);
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344 }
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345 }
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346 return(1);
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347 }
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348 SDL_SetEventFilter(Handle_AltEnter);
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349
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350 1.0.3:
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351 Under X11, if you grab the input and hide the mouse cursor,
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352 the mouse will go into a "relative motion" mode where you
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353 will always get relative motion events no matter how far in
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354 each direction you move the mouse - relative motion is not
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355 bounded by the edges of the window (though the absolute values
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356 of the mouse positions are clamped by the size of the window).
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357 The SVGAlib, framebuffer console, and DirectInput drivers all
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358 have this behavior naturally, and the GDI and BWindow drivers
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359 never go into "relative motion" mode.
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360
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361 1.0.2:
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362 Added a function to enable keyboard repeat:
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363 SDL_EnableKeyRepeat()
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364
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365 Added a function to grab the mouse and keyboard input
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366 SDL_WM_GrabInput()
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367
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368 Added a function to iconify the window.
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369 SDL_WM_IconifyWindow()
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370 If this function succeeds, the application will receive an event
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371 signaling SDL_APPACTIVE event
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372
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373 1.0.1:
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374 Added constants to SDL_audio.h for 16-bit native byte ordering:
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375 AUDIO_U16SYS, AUDIO_S16SYS
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376
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377 1.0.0:
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378 New public release
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379
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380 Version 0.11:
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381
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382 0.11.5:
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383 A new function SDL_GetVideoSurface() has been added, and returns
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384 a pointer to the current display surface.
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385
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386 SDL_AllocSurface() has been renamed SDL_CreateRGBSurface(), and
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387 a new function SDL_CreateRGBSurfaceFrom() has been added to allow
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388 creating an SDL surface from an existing pixel data buffer.
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389
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390 Added SDL_GetRGB() to the headers and documentation.
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391
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392 0.11.4:
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393 SDL_SetLibraryPath() is no longer meaningful, and has been removed.
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394
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395 0.11.3:
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396 A new flag for SDL_Init(), SDL_INIT_NOPARACHUTE, prevents SDL from
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397 installing fatal signal handlers on operating systems that support
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398 them.
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399
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400 Version 0.9:
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401
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402 0.9.15:
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403 SDL_CreateColorCursor() has been removed. Color cursors should
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404 be implemented as sprites, blitted by the application when the
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405 cursor moves. To get smooth color cursor updates when the app
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406 is busy, pass the SDL_INIT_EVENTTHREAD flag to SDL_Init(). This
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407 allows you to handle the mouse motion in another thread from an
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408 event filter function, but is currently only supported by Linux
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409 and BeOS. Note that you'll have to protect the display surface
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410 from multi-threaded access by using mutexes if you do this.
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411
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412 Thread-safe surface support has been removed from SDL.
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413 This makes blitting somewhat faster, by removing SDL_MiddleBlit().
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414 Code that used SDL_MiddleBlit() should use SDL_LowerBlit() instead.
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415 You can make your surfaces thread-safe by allocating your own
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416 mutex and making lock/unlock calls around accesses to your surface.
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417
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418 0.9.14:
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419 SDL_GetMouseState() now takes pointers to int rather than Uint16.
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420
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421 If you set the SDL_WINDOWID environment variable under UNIX X11,
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422 SDL will use that as the main window instead of creating it's own.
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423 This is an unsupported extension to SDL, and not portable at all.
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424
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425 0.9.13:
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426 Added a function SDL_SetLibraryPath() which can be used to specify
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427 the directory containing the SDL dynamic libraries. This is useful
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428 for commercial applications which ship with particular versions
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429 of the libraries, and for security on multi-user systems.
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430 If this function is not used, the default system directories are
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431 searched using the native dynamic object loading mechanism.
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432
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433 In order to support C linkage under Visual C++, you must declare
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434 main() without any return type:
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435 main(int argc, char *argv[]) {
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436 /* Do the program... */
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437 return(0);
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438 }
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439 C++ programs should also return a value if compiled under VC++.
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440
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441 The blit_endian member of the SDL_VideoInfo struct has been removed.
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442
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443 SDL_SymToASCII() has been replaced with SDL_GetKeyName(), so there
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444 is now no longer any function to translate a keysym to a character.
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445
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446 The SDL_keysym structure has been extended with a 'scancode' and
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diff changeset
447 'unicode' member. The 'scancode' is a hardware specific scancode
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448 for the key that was pressed, and may be 0. The 'unicode' member
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449 is a 16-bit UNICODE translation of the key that was pressed along
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450 with any modifiers or compose keys that have been pressed.
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451 If no UNICODE translation exists for the key, 'unicode' will be 0.
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452
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453 Added a function SDL_EnableUNICODE() to enable/disable UNICODE
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454 translation of character keypresses. Translation defaults off.
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455
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456 To convert existing code to use the new API, change code which
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diff changeset
457 uses SDL_SymToASCII() to get the keyname to use SDL_GetKeyName(),
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458 and change code which uses it to get the ASCII value of a sym to
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diff changeset
459 use the 'unicode' member of the event keysym.
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diff changeset
460
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461 0.9.12:
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462 There is partial support for 64-bit datatypes. I don't recommend
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diff changeset
463 you use this if you have a choice, because 64-bit datatypes are not
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464 supported on many platforms. On platforms for which it is supported,
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465 the SDL_HAS_64BIT_TYPE C preprocessor define will be enabled, and
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466 you can use the Uint64 and Sint64 datatypes.
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467
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468 Added functions to SDL_endian.h to support 64-bit datatypes:
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diff changeset
469 SDL_SwapLE64(), SDL_SwapBE64(),
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470 SDL_ReadLE64(), SDL_ReadBE64(), SDL_WriteLE64(), SDL_WriteBE64()
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471
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472 A new member "len_ratio" has been added to the SDL_AudioCVT structure,
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473 and allows you to determine either the original buffer length or the
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474 converted buffer length, given the other.
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475
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diff changeset
476 A new function SDL_FreeWAV() has been added to the API to free data
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diff changeset
477 allocated by SDL_LoadWAV_RW(). This is necessary under Win32 since
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diff changeset
478 the gcc compiled DLL uses a different heap than VC++ compiled apps.
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479
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480 SDL now has initial support for international keyboards using the
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481 Latin character set.
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482 If a particular mapping is desired, you can set the DEFAULT_KEYBOARD
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483 compile-time variable, or you can set the environment variable
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484 "SDL_KEYBOARD" to a string identifying the keyboard mapping you desire.
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diff changeset
485 The valid values for these variables can be found in SDL_keyboard.c
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486
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487 Full support for German and French keyboards under X11 is implemented.
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488
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489 0.9.11:
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490 The THREADED_EVENTS compile-time define has been replaced with the
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diff changeset
491 SDL_INIT_EVENTTHREAD flag. If this flag is passed to SDL_Init(),
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492 SDL will create a separate thread to perform input event handling.
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diff changeset
493 If this flag is passed to SDL_Init(), and the OS doesn't support
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494 event handling in a separate thread, SDL_Init() will fail.
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495 Be sure to add calls to SDL_Delay() in your main thread to allow
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parents:
diff changeset
496 the OS to schedule your event thread, or it may starve, leading
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 to slow event delivery and/or dropped events.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 Currently MacOS and Win32 do not support this flag, while BeOS
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 and Linux do support it. I recommend that your application only
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 use this flag if absolutely necessary.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 The SDL thread function passed to SDL_CreateThread() now returns a
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 status. This status can be retrieved by passing a non-NULL pointer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 as the 'status' argument to SDL_WaitThread().
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 The volume parameter to SDL_MixAudio() has been increased in range
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 from (0-8) to (0-128)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 SDL now has a data source abstraction which can encompass a file,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 an area of memory, or any custom object you can envision. It uses
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 these abstractions, SDL_RWops, in the endian read/write functions,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 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
513 WAV chunks from memory mapped files, compressed archives, network
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 pipes, or anything else that has a data read abstraction.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 There are three built-in data source abstractions:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 SDL_RWFromFile(), SDL_RWFromFP(), SDL_RWFromMem()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 along with a generic data source allocation function:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 SDL_AllocRW()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 These data sources can be used like stdio file pointers with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 following convenience functions:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 SDL_RWseek(), SDL_RWread(), SDL_RWwrite(), SDL_RWclose()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 These functions are defined in the new header file "SDL_rwops.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 The endian swapping functions have been turned into macros for speed
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 and SDL_CalculateEndian() has been removed. SDL_endian.h now defines
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 SDL_BYTEORDER as either SDL_BIG_ENDIAN or SDL_LIL_ENDIAN depending on
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 the endianness of the host system.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 The endian read/write functions now take an SDL_RWops pointer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 instead of a stdio FILE pointer, to support the new data source
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 abstraction.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 The SDL_*LoadWAV() functions have been replaced with a single
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 SDL_LoadWAV_RW() function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 free it as the second parameter. SDL_LoadWAV() is a macro for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 backward compatibility and convenience:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 The SDL_*LoadBMP()/SDL_*SaveBMP() functions have each been replaced
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 with a single function that takes a SDL_RWops pointer as it's
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 first parameter, and a flag whether or not to automatically
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 free it as the second parameter. SDL_LoadBMP() and SDL_SaveBMP()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 are macros for backward compatibility and convenience:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 SDL_LoadBMP_RW(SDL_RWFromFile("sample.bmp", "rb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 SDL_SaveBMP_RW(SDL_RWFromFile("sample.bmp", "wb"), 1, ...);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 Note that these functions use SDL_RWseek() extensively, and should
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 not be used on pipes or other non-seekable data sources.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 0.9.10:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 The Linux SDL_SysWMInfo and SDL_SysWMMsg structures have been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 extended to support multiple types of display drivers, as well as
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 safe access to the X11 display when THREADED_EVENTS is enabled.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 The new structures are documented in the SDL_syswm.h header file.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 Thanks to John Elliott <jce@seasip.demon.co.uk>, the UK keyboard
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 should now work properly, as well as the "Windows" keys on US
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 keyboards.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 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
562 instead of trying to open each block device on the system.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 The CD must be listed in /etc/fstab as using the iso9660 filesystem.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 On Linux, if you define THREADED_EVENTS at compile time, a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 thread will be spawned to gather X events asynchronously from the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 graphics updates. This hasn't been extensively tested, but it does
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 provide a means of handling keyboard and mouse input in a separate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 thread from the graphics thread. (This is now enabled by default.)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 A special access function SDL_PeepEvents() allows you to manipulate
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 the event queue in a thread-safe manner, including peeking at events,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 removing events of a specified type, and adding new events of arbitrary
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 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
575
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 If you use SDL_PeepEvents() to gather events, then the main graphics
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 thread needs to call SDL_PumpEvents() periodically to drive the event
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 loop and generate input events. This is not necessary if SDL has been
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579 compiled with THREADED_EVENTS defined, but doesn't hurt.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 A new function SDL_ThreadID() returns the identifier associated with
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 the current thread.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 0.9.9:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 The AUDIO_STEREO format flag has been replaced with a new 'channels'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 member of the SDL_AudioSpec structure. The channels are 1 for mono
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 audio, and 2 for stereo audio. In the future more channels may be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 supported for 3D surround sound.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 The SDL_MixAudio() function now takes an additional volume parameter,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 which should be set to SDL_MIX_MAXVOLUME for compatibility with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 original function.
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 CD-ROM functions which take a 'cdrom' parameter can now be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 passed NULL, and will act on the last successfully opened CD-ROM.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 0.9.8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 0.9.7:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 0.9.6:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 Added a fast rectangle fill function: SDL_FillRect()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 Addition of a useful function for getting info on the video hardware:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 const SDL_VideoInfo *SDL_GetVideoInfo(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 This function replaces SDL_GetDisplayFormat().
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 Initial support for double-buffering:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 Use the SDL_DOUBLEBUF flag in SDL_SetVideoMode()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 Update the screen with a new function: SDL_Flip()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 SDL_AllocSurface() takes two new flags:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 SDL_SRCCOLORKEY means that the surface will be used for colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 and if the hardware supports hardware acceleration of colorkey blits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 between two surfaces in video memory, to place the surface in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 memory if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 SDL_SRCALPHA means that the surface will be used for alpha blits and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 if the hardware supports hardware acceleration of alpha blits between
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 two surfaces in video memory, to place the surface in video memory
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 if possible, otherwise it will be placed in system memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 SDL_HWSURFACE now means that the surface will be created with the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 same format as the display surface, since having surfaces in video
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 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
626 blit surfaces with different surface formats in video memory.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 0.9.5:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 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
630 that the icon consists of the entire image.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 SDL_LowerBlit() is back -- but don't use it on the display surface.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 It is exactly the same as SDL_MiddleBlit(), but doesn't check for
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 thread safety.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 Added SDL_FPLoadBMP(), SDL_FPSaveBMP(), SDL_FPLoadWAV(), which take
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 a FILE pointer instead of a file name.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 Added CD-ROM audio control API:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 SDL_CDNumDrives()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641 SDL_CDName()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 SDL_CDOpen()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 SDL_CDStatus()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 SDL_CDPlayTracks()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 SDL_CDPlay()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 SDL_CDPause()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 SDL_CDResume()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 SDL_CDStop()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649 SDL_CDEject()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 SDL_CDClose()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
652 0.9.4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653 No changes, bugfixes only.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655 0.9.3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 Mouse motion event now includes relative motion information:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 Sint16 event->motion.xrel, Sint16 event->motion.yrel
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658
74212992fb08 Initial revision
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659 X11 keyrepeat handling can be disabled by defining IGNORE_X_KEYREPEAT
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660 (Add -DIGNORE_X_KEYREPEAT to CFLAGS line in obj/x11Makefile)
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661
74212992fb08 Initial revision
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662 0.9.2:
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Sam Lantinga <slouken@lokigames.com>
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663 No changes, bugfixes only.
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Sam Lantinga <slouken@lokigames.com>
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664
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665 0.9.1:
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666 Removed SDL_MapSurface() and SDL_UnmapSurface() -- surfaces are now
74212992fb08 Initial revision
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667 automatically mapped on blit.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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668
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Sam Lantinga <slouken@lokigames.com>
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669 0.8.0:
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670 SDL stable release