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[PATCH] SDL_GetVideoMode() does not find best mode, part 2 Following commit 1.51, I come accross a problem when SDL must choose between several video modes that could suit the one asked. If I ask 320x240 with this list: 768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200 The smallest selectables modes are 384x240 and 320x400. And SDL choose the later in this list, but 384x240 is more suitable. So I added a check to compare the pixel count (surface) of modes, and select the one which has the smallest pixel count. In my example, 384x240 has 92160 pixels, and 320x400 has 128000 pixels. So now SDL will choose 384x240 for the asked 320x240 mode.
author Patrice Mandin <patmandin@gmail.com>
date Thu, 19 Jan 2006 21:28:52 +0000
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1 <HTML
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2 ><HEAD
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3 ><TITLE
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4 >SDL_FillRect</TITLE
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5 ><META
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6 NAME="GENERATOR"
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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8 "><LINK
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9 REL="HOME"
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10 TITLE="SDL Library Documentation"
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11 HREF="index.html"><LINK
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12 REL="UP"
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13 TITLE="Video"
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14 HREF="video.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="SDL_BlitSurface"
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17 HREF="sdlblitsurface.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_DisplayFormat"
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20 HREF="sdldisplayformat.html"></HEAD
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21 ><BODY
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23 BGCOLOR="#FFF8DC"
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24 TEXT="#000000"
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25 LINK="#0000ee"
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26 VLINK="#551a8b"
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27 ALINK="#ff0000"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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31 SUMMARY="Header navigation table"
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32 WIDTH="100%"
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33 BORDER="0"
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34 CELLPADDING="0"
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35 CELLSPACING="0"
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36 ><TR
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37 ><TH
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38 COLSPAN="3"
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39 ALIGN="center"
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40 >SDL Library Documentation</TH
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41 ></TR
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42 ><TR
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43 ><TD
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44 WIDTH="10%"
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45 ALIGN="left"
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46 VALIGN="bottom"
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47 ><A
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48 HREF="sdlblitsurface.html"
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49 ACCESSKEY="P"
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50 >Prev</A
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51 ></TD
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52 ><TD
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53 WIDTH="80%"
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54 ALIGN="center"
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55 VALIGN="bottom"
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56 ></TD
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57 ><TD
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58 WIDTH="10%"
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59 ALIGN="right"
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60 VALIGN="bottom"
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61 ><A
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62 HREF="sdldisplayformat.html"
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63 ACCESSKEY="N"
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64 >Next</A
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65 ></TD
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66 ></TR
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67 ></TABLE
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68 ><HR
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69 ALIGN="LEFT"
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70 WIDTH="100%"></DIV
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71 ><H1
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72 ><A
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73 NAME="SDLFILLRECT"
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74 ></A
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75 >SDL_FillRect</H1
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76 ><DIV
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77 CLASS="REFNAMEDIV"
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78 ><A
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79 NAME="AEN2351"
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80 ></A
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81 ><H2
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82 >Name</H2
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83 >SDL_FillRect&nbsp;--&nbsp;This function performs a fast fill of the given rectangle with some color</DIV
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84 ><DIV
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85 CLASS="REFSYNOPSISDIV"
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86 ><A
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87 NAME="AEN2354"
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88 ></A
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89 ><H2
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90 >Synopsis</H2
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91 ><DIV
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92 CLASS="FUNCSYNOPSIS"
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93 ><A
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94 NAME="AEN2355"
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95 ></A
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96 ><P
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97 ></P
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98 ><PRE
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99 CLASS="FUNCSYNOPSISINFO"
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100 >#include "SDL.h"</PRE
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101 ><P
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102 ><CODE
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103 ><CODE
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104 CLASS="FUNCDEF"
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105 >int <B
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106 CLASS="FSFUNC"
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107 >SDL_FillRect</B
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108 ></CODE
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109 >(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color);</CODE
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110 ></P
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111 ><P
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112 ></P
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113 ></DIV
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114 ></DIV
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115 ><DIV
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116 CLASS="REFSECT1"
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117 ><A
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118 NAME="AEN2361"
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119 ></A
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120 ><H2
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121 >Description</H2
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122 ><P
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123 >This function performs a fast fill of the given rectangle with
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124 <TT
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125 CLASS="PARAMETER"
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126 ><I
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127 >color</I
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128 ></TT
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129 >. If <TT
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130 CLASS="PARAMETER"
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131 ><I
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132 >dstrect</I
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133 ></TT
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134 >
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135 is <TT
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136 CLASS="LITERAL"
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137 >NULL</TT
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138 >, the whole surface will be filled with
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139 <TT
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140 CLASS="PARAMETER"
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141 ><I
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142 >color</I
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143 ></TT
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144 >.</P
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145 ><P
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146 >The color should be a pixel of the format used by the surface, and
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147 can be generated by the
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148 <A
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149 HREF="sdlmaprgb.html"
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150 >SDL_MapRGB</A
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151 > or <A
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152 HREF="sdlmaprgba.html"
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153 >SDL_MapRGBA</A
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154 >
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155 functions. If the color value contains an alpha value then the
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156 destination is simply "filled" with that alpha information, no blending
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157 takes place.</P
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158 ><P
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159 >If there is a clip rectangle set on the destination (set via
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160 <A
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161 HREF="sdlsetcliprect.html"
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162 >SDL_SetClipRect</A
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163 >) then this
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164 function will clip based on the intersection of the clip rectangle and
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165 the <TT
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166 CLASS="PARAMETER"
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167 ><I
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168 >dstrect</I
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169 ></TT
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170 > rectangle and the dstrect rectangle
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172 ></DIV
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173 ><DIV
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174 CLASS="REFSECT1"
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175 ><A
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176 NAME="AEN2374"
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177 ></A
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178 ><H2
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179 >Return Value</H2
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180 ><P
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181 >This function returns <SPAN
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182 CLASS="RETURNVALUE"
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183 >0</SPAN
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184 > on success, or
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185 <SPAN
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186 CLASS="RETURNVALUE"
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187 >-1</SPAN
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188 > on error.</P
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189 ></DIV
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190 ><DIV
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191 CLASS="REFSECT1"
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192 ><A
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193 NAME="AEN2379"
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194 ></A
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195 ><H2
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196 >See Also</H2
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197 ><P
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198 ><A
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199 HREF="sdlmaprgb.html"
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200 ><TT
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201 CLASS="FUNCTION"
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202 >SDL_MapRGB</TT
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203 ></A
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204 >,
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205 <A
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206 HREF="sdlmaprgb.html"
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207 ><TT
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208 CLASS="FUNCTION"
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209 >SDL_MapRGBA</TT
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210 ></A
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211 >,
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212 <A
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213 HREF="sdlblitsurface.html"
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214 ><TT
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215 CLASS="FUNCTION"
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216 >SDL_BlitSurface</TT
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217 ></A
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218 >,
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219 <A
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220 HREF="sdlrect.html"
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221 ><SPAN
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222 CLASS="STRUCTNAME"
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223 >SDL_Rect</SPAN
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224 ></A
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225 ></P
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226 ></DIV
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227 ><DIV
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228 CLASS="NAVFOOTER"
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229 ><HR
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230 ALIGN="LEFT"
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231 WIDTH="100%"><TABLE
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232 SUMMARY="Footer navigation table"
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233 WIDTH="100%"
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234 BORDER="0"
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235 CELLPADDING="0"
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236 CELLSPACING="0"
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237 ><TR
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238 ><TD
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239 WIDTH="33%"
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240 ALIGN="left"
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241 VALIGN="top"
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242 ><A
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243 HREF="sdlblitsurface.html"
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244 ACCESSKEY="P"
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245 >Prev</A
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246 ></TD
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247 ><TD
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248 WIDTH="34%"
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249 ALIGN="center"
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250 VALIGN="top"
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251 ><A
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252 HREF="index.html"
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253 ACCESSKEY="H"
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254 >Home</A
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255 ></TD
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256 ><TD
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257 WIDTH="33%"
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258 ALIGN="right"
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259 VALIGN="top"
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260 ><A
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261 HREF="sdldisplayformat.html"
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262 ACCESSKEY="N"
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263 >Next</A
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264 ></TD
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265 ></TR
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266 ><TR
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267 ><TD
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268 WIDTH="33%"
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269 ALIGN="left"
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270 VALIGN="top"
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271 >SDL_BlitSurface</TD
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272 ><TD
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273 WIDTH="34%"
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274 ALIGN="center"
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275 VALIGN="top"
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276 ><A
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277 HREF="video.html"
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278 ACCESSKEY="U"
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279 >Up</A
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280 ></TD
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281 ><TD
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282 WIDTH="33%"
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283 ALIGN="right"
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284 VALIGN="top"
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285 >SDL_DisplayFormat</TD
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286 ></TR
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287 ></TABLE
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288 ></DIV
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289 ></BODY
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290 ></HTML
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291 >