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1 <HTML
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2 ><HEAD
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3 ><TITLE
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4 >SDL_GetRGBA</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 1.61
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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_GetRGB"
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17 HREF="sdlgetrgb.html"><LINK
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18 REL="NEXT"
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19 TITLE="SDL_CreateRGBSurface"
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20 HREF="sdlcreatergbsurface.html"></HEAD
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21 ><BODY
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22 CLASS="REFENTRY"
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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 WIDTH="100%"
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32 BORDER="0"
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33 CELLPADDING="0"
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34 CELLSPACING="0"
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35 ><TR
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36 ><TH
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37 COLSPAN="3"
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38 ALIGN="center"
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39 >SDL Library Documentation</TH
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40 ></TR
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41 ><TR
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42 ><TD
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43 WIDTH="10%"
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44 ALIGN="left"
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45 VALIGN="bottom"
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46 ><A
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47 HREF="sdlgetrgb.html"
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48 >Prev</A
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49 ></TD
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50 ><TD
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51 WIDTH="80%"
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52 ALIGN="center"
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53 VALIGN="bottom"
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54 ></TD
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55 ><TD
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56 WIDTH="10%"
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57 ALIGN="right"
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58 VALIGN="bottom"
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59 ><A
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60 HREF="sdlcreatergbsurface.html"
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61 >Next</A
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62 ></TD
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63 ></TR
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64 ></TABLE
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65 ><HR
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66 ALIGN="LEFT"
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67 WIDTH="100%"></DIV
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68 ><H1
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69 ><A
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70 NAME="SDLGETRGBA"
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71 >SDL_GetRGBA</A
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72 ></H1
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73 ><DIV
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74 CLASS="REFNAMEDIV"
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75 ><A
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76 NAME="AEN1290"
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77 ></A
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78 ><H2
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79 >Name</H2
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80 >SDL_GetRGBA -- Get RGBA values from a pixel in the specified pixel format.</DIV
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81 ><DIV
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82 CLASS="REFSYNOPSISDIV"
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83 ><A
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84 NAME="AEN1293"
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85 ></A
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86 ><H2
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87 >Synopsis</H2
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88 ><DIV
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89 CLASS="FUNCSYNOPSIS"
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90 ><A
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91 NAME="AEN1294"
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92 ></A
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93 ><P
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94 ></P
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95 ><PRE
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96 CLASS="FUNCSYNOPSISINFO"
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97 >#include "SDL.h"</PRE
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98 ><P
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99 ><CODE
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100 ><CODE
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101 CLASS="FUNCDEF"
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102 >void <B
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103 CLASS="FSFUNC"
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104 >SDL_GetRGBA</B
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105 ></CODE
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106 >(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a);</CODE
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107 ></P
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108 ><P
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109 ></P
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110 ></DIV
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111 ></DIV
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112 ><DIV
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113 CLASS="REFSECT1"
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114 ><A
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115 NAME="AEN1300"
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116 ></A
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117 ><H2
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118 >Description</H2
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119 ><P
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120 >Get RGBA component values from a pixel stored in the specified pixel format.</P
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121 ><P
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122 >This function uses the entire 8-bit [0..255] range when converting color
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123 components from pixel formats with less than 8-bits per RGB component
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124 (e.g., a completely white pixel in 16-bit RGB565 format would return
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125 [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).</P
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126 ><P
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127 >If the surface has no alpha component, the alpha will be returned as 0xff
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128 (100% opaque).</P
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129 ></DIV
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130 ><DIV
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131 CLASS="REFSECT1"
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132 ><A
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133 NAME="AEN1305"
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134 ></A
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135 ><H2
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136 >See Also</H2
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137 ><P
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138 ><A
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139 HREF="sdlgetrgb.html"
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140 >SDL_GetRGB</A
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141 >,
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142 <A
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143 HREF="sdlmaprgb.html"
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144 >SDL_MapRGB</A
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145 >,
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146 <A
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147 HREF="sdlmaprgba.html"
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148 >SDL_MapRGBA</A
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149 >,
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150 <A
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151 HREF="sdlpixelformat.html"
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152 >SDL_PixelFormat</A
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153 ></P
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154 ></DIV
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155 ><DIV
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156 CLASS="NAVFOOTER"
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157 ><HR
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158 ALIGN="LEFT"
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159 WIDTH="100%"><TABLE
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160 WIDTH="100%"
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161 BORDER="0"
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162 CELLPADDING="0"
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163 CELLSPACING="0"
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164 ><TR
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165 ><TD
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166 WIDTH="33%"
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167 ALIGN="left"
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168 VALIGN="top"
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169 ><A
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170 HREF="sdlgetrgb.html"
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171 >Prev</A
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172 ></TD
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173 ><TD
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174 WIDTH="34%"
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175 ALIGN="center"
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176 VALIGN="top"
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177 ><A
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178 HREF="index.html"
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179 >Home</A
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180 ></TD
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181 ><TD
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182 WIDTH="33%"
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183 ALIGN="right"
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184 VALIGN="top"
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185 ><A
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186 HREF="sdlcreatergbsurface.html"
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187 >Next</A
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188 ></TD
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189 ></TR
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190 ><TR
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191 ><TD
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192 WIDTH="33%"
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193 ALIGN="left"
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194 VALIGN="top"
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195 >SDL_GetRGB</TD
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196 ><TD
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197 WIDTH="34%"
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198 ALIGN="center"
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199 VALIGN="top"
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200 ><A
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201 HREF="video.html"
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202 >Up</A
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203 ></TD
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204 ><TD
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205 WIDTH="33%"
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206 ALIGN="right"
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207 VALIGN="top"
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208 >SDL_CreateRGBSurface</TD
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209 ></TR
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210 ></TABLE
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211 ></DIV
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212 ></BODY
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213 ></HTML
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214 > |
