Mercurial > sdl-ios-xcode
annotate docs/html/sdlmaprgba.html @ 3292:245a7d79577c
Fixed bug #615
Scott McCreary 2008-08-21 10:48:14 PDT
This patch adds support for Haiku.
http://ports.haiku-files.org/browser/haikuports/trunk/media-libs/libsdl/SDL-1.2.13-haiku.diff
Haiku is an open-source recreation of BeOS. It has better POSIX compliance
than beOS did, and other improved features, which in some cases causes us to
have to "undo" previous BeOS workarounds.
Here's our port log entry for it, showing the steps to force the changes into
configure and Makefile:
http://ports.haiku-files.org/wiki/media-libs/libsdl/1.2.13/1
Note that this was only tried on 1.2.13 stable so far.
Haiku is using a newer config.guess / config.sub that doesn't yet seem to be in
the released libtool, so we are having to copy it in for now.
http://haiku-files.org/files/optional-packages/
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 21 Sep 2009 09:21:00 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_MapRGBA</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Video" | |
| 14 HREF="video.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_MapRGB" | |
| 17 HREF="sdlmaprgb.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_GetRGB" | |
| 20 HREF="sdlgetrgb.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="REFENTRY" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
|
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31 SUMMARY="Header navigation table" |
| 0 | 32 WIDTH="100%" |
| 33 BORDER="0" | |
| 34 CELLPADDING="0" | |
| 35 CELLSPACING="0" | |
| 36 ><TR | |
| 37 ><TH | |
| 38 COLSPAN="3" | |
| 39 ALIGN="center" | |
| 40 >SDL Library Documentation</TH | |
| 41 ></TR | |
| 42 ><TR | |
| 43 ><TD | |
| 44 WIDTH="10%" | |
| 45 ALIGN="left" | |
| 46 VALIGN="bottom" | |
| 47 ><A | |
| 48 HREF="sdlmaprgb.html" | |
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49 ACCESSKEY="P" |
| 0 | 50 >Prev</A |
| 51 ></TD | |
| 52 ><TD | |
| 53 WIDTH="80%" | |
| 54 ALIGN="center" | |
| 55 VALIGN="bottom" | |
| 56 ></TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="sdlgetrgb.html" | |
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63 ACCESSKEY="N" |
| 0 | 64 >Next</A |
| 65 ></TD | |
| 66 ></TR | |
| 67 ></TABLE | |
| 68 ><HR | |
| 69 ALIGN="LEFT" | |
| 70 WIDTH="100%"></DIV | |
| 71 ><H1 | |
| 72 ><A | |
| 73 NAME="SDLMAPRGBA" | |
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74 ></A |
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75 >SDL_MapRGBA</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN1687" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_MapRGBA -- Map a RGBA color value to a pixel format.</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN1690" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN1691" |
| 0 | 95 ></A |
| 96 ><P | |
| 97 ></P | |
| 98 ><PRE | |
| 99 CLASS="FUNCSYNOPSISINFO" | |
| 100 >#include "SDL.h"</PRE | |
| 101 ><P | |
| 102 ><CODE | |
| 103 ><CODE | |
| 104 CLASS="FUNCDEF" | |
| 105 >Uint32 <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_MapRGBA</B | |
| 108 ></CODE | |
| 109 >(SDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b, Uint8 a);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN1697" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >Maps the RGBA color value to the specified pixel format and returns the | |
| 124 pixel value as a 32-bit int.</P | |
| 125 ><P | |
| 126 >If the format has a palette (8-bit) the index of the closest matching | |
| 127 color in the palette will be returned.</P | |
| 128 ><P | |
| 129 >If the specified pixel format has no alpha component the alpha value | |
| 130 will be ignored (as it will be in formats with a palette).</P | |
| 131 ></DIV | |
| 132 ><DIV | |
| 133 CLASS="REFSECT1" | |
| 134 ><A | |
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135 NAME="AEN1702" |
| 0 | 136 ></A |
| 137 ><H2 | |
| 138 >Return Value</H2 | |
| 139 ><P | |
| 140 >A pixel value best approximating the given RGBA color value for a given | |
| 141 pixel format. If the pixel format bpp (color depth) is less than 32-bpp | |
| 142 then the unused upper bits of the return value can safely be ignored | |
| 143 (e.g., with a 16-bpp format the return value can be assigned to a | |
| 144 <SPAN | |
| 145 CLASS="TYPE" | |
| 146 >Uint16</SPAN | |
| 147 >, and similarly a <SPAN | |
| 148 CLASS="TYPE" | |
| 149 >Uint8</SPAN | |
| 150 > for an 8-bpp | |
| 151 format).</P | |
| 152 ></DIV | |
| 153 ><DIV | |
| 154 CLASS="REFSECT1" | |
| 155 ><A | |
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156 NAME="AEN1707" |
| 0 | 157 ></A |
| 158 ><H2 | |
| 159 >See Also</H2 | |
| 160 ><P | |
| 161 ><A | |
| 162 HREF="sdlgetrgb.html" | |
| 163 >SDL_GetRGB</A | |
| 164 >, | |
| 165 <A | |
| 166 HREF="sdlgetrgba.html" | |
| 167 >SDL_GetRGBA</A | |
| 168 >, | |
| 169 <A | |
| 170 HREF="sdlmaprgb.html" | |
| 171 >SDL_MapRGB</A | |
| 172 >, | |
| 173 <A | |
| 174 HREF="sdlpixelformat.html" | |
| 175 >SDL_PixelFormat</A | |
| 176 ></P | |
| 177 ></DIV | |
| 178 ><DIV | |
| 179 CLASS="NAVFOOTER" | |
| 180 ><HR | |
| 181 ALIGN="LEFT" | |
| 182 WIDTH="100%"><TABLE | |
|
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183 SUMMARY="Footer navigation table" |
| 0 | 184 WIDTH="100%" |
| 185 BORDER="0" | |
| 186 CELLPADDING="0" | |
| 187 CELLSPACING="0" | |
| 188 ><TR | |
| 189 ><TD | |
| 190 WIDTH="33%" | |
| 191 ALIGN="left" | |
| 192 VALIGN="top" | |
| 193 ><A | |
| 194 HREF="sdlmaprgb.html" | |
|
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parents:
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diff
changeset
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195 ACCESSKEY="P" |
| 0 | 196 >Prev</A |
| 197 ></TD | |
| 198 ><TD | |
| 199 WIDTH="34%" | |
| 200 ALIGN="center" | |
| 201 VALIGN="top" | |
| 202 ><A | |
| 203 HREF="index.html" | |
|
803
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parents:
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204 ACCESSKEY="H" |
| 0 | 205 >Home</A |
| 206 ></TD | |
| 207 ><TD | |
| 208 WIDTH="33%" | |
| 209 ALIGN="right" | |
| 210 VALIGN="top" | |
| 211 ><A | |
| 212 HREF="sdlgetrgb.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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213 ACCESSKEY="N" |
| 0 | 214 >Next</A |
| 215 ></TD | |
| 216 ></TR | |
| 217 ><TR | |
| 218 ><TD | |
| 219 WIDTH="33%" | |
| 220 ALIGN="left" | |
| 221 VALIGN="top" | |
| 222 >SDL_MapRGB</TD | |
| 223 ><TD | |
| 224 WIDTH="34%" | |
| 225 ALIGN="center" | |
| 226 VALIGN="top" | |
| 227 ><A | |
| 228 HREF="video.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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229 ACCESSKEY="U" |
| 0 | 230 >Up</A |
| 231 ></TD | |
| 232 ><TD | |
| 233 WIDTH="33%" | |
| 234 ALIGN="right" | |
| 235 VALIGN="top" | |
| 236 >SDL_GetRGB</TD | |
| 237 ></TR | |
| 238 ></TABLE | |
| 239 ></DIV | |
| 240 ></BODY | |
| 241 ></HTML | |
| 242 > |