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| 5131 | clevermous | 1 | |
| 2 | > |
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| 3 | > |
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| 4 | >SDL_MapRGBA |
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| 5 | > |
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| 6 | NAME="GENERATOR" |
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| 7 | CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
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| 8 | "> |
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| 9 | REL="HOME" |
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| 10 | TITLE="SDL Library Documentation" |
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| 11 | HREF="index.html"> |
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| 12 | REL="UP" |
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| 13 | TITLE="Video" |
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| 14 | HREF="video.html"> |
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| 15 | REL="PREVIOUS" |
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| 16 | TITLE="SDL_MapRGB" |
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| 17 | HREF="sdlmaprgb.html"> |
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| 18 | REL="NEXT" |
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| 19 | TITLE="SDL_GetRGB" |
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| 20 | HREF="sdlgetrgb.html"> |
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| 21 | > |
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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 | > |
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| 29 | CLASS="NAVHEADER" |
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| 30 | > |
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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 | > |
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| 36 | > |
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| 37 | COLSPAN="3" |
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| 38 | ALIGN="center" |
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| 39 | >SDL Library Documentation |
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| 40 | > |
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| 41 | > |
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| 42 | > |
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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 | > |
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| 47 | HREF="sdlmaprgb.html" |
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| 48 | >Prev |
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| 49 | > |
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| 50 | > |
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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 | > |
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| 55 | > |
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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 | > |
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| 60 | HREF="sdlgetrgb.html" |
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| 61 | >Next |
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| 62 | > |
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| 63 | > |
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| 64 | > |
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| 65 | > |
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| 66 | ALIGN="LEFT" |
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| 67 | WIDTH="100%"> |
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| 68 | > |
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| 69 | > |
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| 70 | NAME="SDLMAPRGBA" |
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| 71 | >SDL_MapRGBA |
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| 72 | > |
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| 73 | > |
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| 74 | CLASS="REFNAMEDIV" |
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| 75 | > |
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| 76 | NAME="AEN1272" |
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| 77 | > |
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| 78 | > |
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| 79 | >Name |
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| 80 | >SDL_MapRGBA -- Map a RGBA color value to a pixel format. |
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| 81 | > |
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| 82 | CLASS="REFSYNOPSISDIV" |
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| 83 | > |
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| 84 | NAME="AEN1275" |
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| 85 | > |
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| 86 | > |
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| 87 | >Synopsis |
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| 88 | > |
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| 89 | CLASS="FUNCSYNOPSIS" |
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| 90 | > |
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| 91 | NAME="AEN1276" |
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| 92 | > |
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| 93 | > |
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| 94 | > |
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| 95 | > |
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| 96 | CLASS="FUNCSYNOPSISINFO" |
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| 97 | >#include "SDL.h" |
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| 98 | > |
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| 99 | > |
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| 100 | > |
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| 101 | CLASS="FUNCDEF" |
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| 102 | >Uint32 |
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| 103 | CLASS="FSFUNC" |
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| 104 | >SDL_MapRGBA |
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| 105 | > |
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| 106 | >(SDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b, Uint8 a); |
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| 107 | > |
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| 108 | > |
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| 109 | > |
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| 110 | > |
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| 111 | > |
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| 112 | > |
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| 113 | CLASS="REFSECT1" |
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| 114 | > |
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| 115 | NAME="AEN1282" |
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| 116 | > |
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| 117 | > |
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| 118 | >Description |
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| 119 | > |
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| 120 | >Maps the RGBA color value to the specified pixel format and returns the |
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| 121 | pixel value as a 32-bit int. |
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| 122 | > |
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| 123 | >If the format has a palette (8-bit) the index of the closest matching |
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| 124 | color in the palette will be returned. |
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| 125 | > |
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| 126 | >If the specified pixel format has no alpha component the alpha value |
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| 127 | will be ignored (as it will be in formats with a palette). |
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| 128 | > |
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| 129 | > |
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| 130 | CLASS="REFSECT1" |
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| 131 | > |
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| 132 | NAME="AEN1287" |
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| 133 | > |
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| 134 | > |
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| 135 | >Return Value |
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| 136 | > |
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| 137 | >A pixel value best approximating the given RGBA color value for a given |
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| 138 | pixel format. If the pixel format bpp (color depth) is less than 32-bpp |
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| 139 | then the unused upper bits of the return value can safely be ignored |
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| 140 | (e.g., with a 16-bpp format the return value can be assigned to a |
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| 141 | |||
| 142 | CLASS="TYPE" |
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| 143 | >Uint16 |
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| 144 | >, and similarly a |
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| 145 | CLASS="TYPE" |
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| 146 | >Uint8 |
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| 147 | > for an 8-bpp |
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| 148 | format). |
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| 149 | > |
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| 150 | > |
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| 151 | CLASS="REFSECT1" |
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| 152 | > |
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| 153 | NAME="AEN1292" |
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| 154 | > |
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| 155 | > |
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| 156 | >See Also |
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| 157 | > |
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| 158 | > |
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| 159 | HREF="sdlgetrgb.html" |
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| 160 | >SDL_GetRGB |
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| 161 | >, |
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| 162 | |||
| 163 | HREF="sdlgetrgba.html" |
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| 164 | >SDL_GetRGBA |
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| 165 | >, |
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| 166 | |||
| 167 | HREF="sdlmaprgb.html" |
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| 168 | >SDL_MapRGB |
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| 169 | >, |
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| 170 | |||
| 171 | HREF="sdlpixelformat.html" |
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| 172 | >SDL_PixelFormat |
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| 173 | > |
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| 174 | > |
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| 175 | > |
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| 176 | CLASS="NAVFOOTER" |
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| 177 | > |
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| 178 | ALIGN="LEFT" |
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| 179 | WIDTH="100%"> |
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| 180 | WIDTH="100%" |
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| 181 | BORDER="0" |
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| 182 | CELLPADDING="0" |
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| 183 | CELLSPACING="0" |
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| 184 | > |
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| 185 | > |
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| 186 | WIDTH="33%" |
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| 187 | ALIGN="left" |
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| 188 | VALIGN="top" |
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| 189 | > |
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| 190 | HREF="sdlmaprgb.html" |
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| 191 | >Prev |
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| 192 | > |
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| 193 | > |
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| 194 | WIDTH="34%" |
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| 195 | ALIGN="center" |
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| 196 | VALIGN="top" |
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| 197 | > |
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| 198 | HREF="index.html" |
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| 199 | >Home |
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| 200 | > |
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| 201 | > |
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| 202 | WIDTH="33%" |
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| 203 | ALIGN="right" |
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| 204 | VALIGN="top" |
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| 205 | > |
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| 206 | HREF="sdlgetrgb.html" |
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| 207 | >Next |
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| 208 | > |
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| 209 | > |
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| 210 | > |
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| 211 | > |
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| 212 | WIDTH="33%" |
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| 213 | ALIGN="left" |
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| 214 | VALIGN="top" |
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| 215 | >SDL_MapRGB |
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| 216 | > |
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| 217 | WIDTH="34%" |
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| 218 | ALIGN="center" |
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| 219 | VALIGN="top" |
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| 220 | > |
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| 221 | HREF="video.html" |
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| 222 | >Up |
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| 223 | > |
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| 224 | > |
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| 225 | WIDTH="33%" |
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| 226 | ALIGN="right" |
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| 227 | VALIGN="top" |
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| 228 | >SDL_GetRGB |
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| 229 | > |
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| 230 | > |
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| 231 | > |
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| 232 | > |
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| 233 | > |
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| 234 | > |