Mercurial > sdl-ios-xcode
annotate docs/html/sdlgetrgb.html @ 2185:2032348afed1
This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is
available and to keep people form having to install yet another library I have added the essential parts of Xmu in
src/video/extensions/XmuStdCmap and an include file in src/video/extensions. The support makes use of standard X11 mechanisms to
create color maps and make sure that an application uses the same color map for each window/visual combination. This should make it
possible for gamma support to be implemented based on a single color map per application.
Hurm... it looks like "make indent" modified a few extra files. Those are getting committed too.
| author | Bob Pendleton <bob@pendleton.com> |
|---|---|
| date | Thu, 12 Jul 2007 20:00:50 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_GetRGB</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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_MapRGBA" | |
| 17 HREF="sdlmaprgba.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_GetRGBA" | |
| 20 HREF="sdlgetrgba.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 | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlmaprgba.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlgetrgba.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="SDLGETRGB" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
|
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_GetRGB</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN1718" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_GetRGB -- Get RGB values from a pixel in the specified pixel format.</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 NAME="AEN1721" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
94 NAME="AEN1722" |
| 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 >void <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_GetRGB</B | |
| 108 ></CODE | |
| 109 >(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
118 NAME="AEN1728" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >Get RGB component values from a pixel stored in the specified pixel format.</P | |
| 124 ><P | |
| 125 >This function uses the entire 8-bit [0..255] range when converting color | |
| 126 components from pixel formats with less than 8-bits per RGB component | |
| 127 (e.g., a completely white pixel in 16-bit RGB565 format would return | |
| 128 [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).</P | |
| 129 ></DIV | |
| 130 ><DIV | |
| 131 CLASS="REFSECT1" | |
| 132 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
133 NAME="AEN1732" |
| 0 | 134 ></A |
| 135 ><H2 | |
| 136 >See Also</H2 | |
| 137 ><P | |
| 138 ><A | |
| 139 HREF="sdlgetrgba.html" | |
| 140 ><TT | |
| 141 CLASS="FUNCTION" | |
| 142 >SDL_GetRGBA</TT | |
| 143 ></A | |
| 144 >, | |
| 145 <A | |
| 146 HREF="sdlmaprgb.html" | |
| 147 ><TT | |
| 148 CLASS="FUNCTION" | |
| 149 >SDL_MapRGB</TT | |
| 150 ></A | |
| 151 >, | |
| 152 <A | |
| 153 HREF="sdlmaprgba.html" | |
| 154 ><TT | |
| 155 CLASS="FUNCTION" | |
| 156 >SDL_MapRGBA</TT | |
| 157 ></A | |
| 158 >, | |
| 159 <A | |
| 160 HREF="sdlpixelformat.html" | |
| 161 ><SPAN | |
| 162 CLASS="STRUCTNAME" | |
| 163 >SDL_PixelFormat</SPAN | |
| 164 ></A | |
| 165 ></P | |
| 166 ></DIV | |
| 167 ><DIV | |
| 168 CLASS="NAVFOOTER" | |
| 169 ><HR | |
| 170 ALIGN="LEFT" | |
| 171 WIDTH="100%"><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
172 SUMMARY="Footer navigation table" |
| 0 | 173 WIDTH="100%" |
| 174 BORDER="0" | |
| 175 CELLPADDING="0" | |
| 176 CELLSPACING="0" | |
| 177 ><TR | |
| 178 ><TD | |
| 179 WIDTH="33%" | |
| 180 ALIGN="left" | |
| 181 VALIGN="top" | |
| 182 ><A | |
| 183 HREF="sdlmaprgba.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
184 ACCESSKEY="P" |
| 0 | 185 >Prev</A |
| 186 ></TD | |
| 187 ><TD | |
| 188 WIDTH="34%" | |
| 189 ALIGN="center" | |
| 190 VALIGN="top" | |
| 191 ><A | |
| 192 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
193 ACCESSKEY="H" |
| 0 | 194 >Home</A |
| 195 ></TD | |
| 196 ><TD | |
| 197 WIDTH="33%" | |
| 198 ALIGN="right" | |
| 199 VALIGN="top" | |
| 200 ><A | |
| 201 HREF="sdlgetrgba.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
202 ACCESSKEY="N" |
| 0 | 203 >Next</A |
| 204 ></TD | |
| 205 ></TR | |
| 206 ><TR | |
| 207 ><TD | |
| 208 WIDTH="33%" | |
| 209 ALIGN="left" | |
| 210 VALIGN="top" | |
| 211 >SDL_MapRGBA</TD | |
| 212 ><TD | |
| 213 WIDTH="34%" | |
| 214 ALIGN="center" | |
| 215 VALIGN="top" | |
| 216 ><A | |
| 217 HREF="video.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
218 ACCESSKEY="U" |
| 0 | 219 >Up</A |
| 220 ></TD | |
| 221 ><TD | |
| 222 WIDTH="33%" | |
| 223 ALIGN="right" | |
| 224 VALIGN="top" | |
| 225 >SDL_GetRGBA</TD | |
| 226 ></TR | |
| 227 ></TABLE | |
| 228 ></DIV | |
| 229 ></BODY | |
| 230 ></HTML | |
| 231 > |