Mercurial > sdl-ios-xcode
annotate docs/html/sdlgetrgb.html @ 315:3333b6e68289
Date: Sat, 23 Mar 2002 13:53:37 +0200
From: "Mike Gorchak" <mike@malva.ua>
Subject: Big QNX patch again.
Added 8bit palette emulation code for window mode with bpp>=15.
Added store/restore original palette for 8bit modes.
Added more information about photon API call fails.
Rewroten change palette code, slow but works.
Fixed bug with set caption before window was inited.
Fixed bugs with some initial state of variables.
Fixed bug with storing old video mode settings.
Fixed bug with switching to fullscreen mode and back.
Fixed few double SEGFAULTS during parachute mode.
Removed compilation warning with no PgWaitHWIdle prototype.
Removed pack of dead unusable code.
Cleanups SDL_PrivateVideoData structure, some headers.
Some code formatting.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 23 Mar 2002 20:19:44 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_GetRGB</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 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 | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdlmaprgba.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdlgetrgba.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLGETRGB" | |
| 71 >SDL_GetRGB</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN1334" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_GetRGB -- Get RGB values from a pixel in the specified pixel format.</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
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84 NAME="AEN1337" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
|
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91 NAME="AEN1338" |
| 0 | 92 ></A |
| 93 ><P | |
| 94 ></P | |
| 95 ><PRE | |
| 96 CLASS="FUNCSYNOPSISINFO" | |
| 97 >#include "SDL.h"</PRE | |
| 98 ><P | |
| 99 ><CODE | |
| 100 ><CODE | |
| 101 CLASS="FUNCDEF" | |
| 102 >void <B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_GetRGB</B | |
| 105 ></CODE | |
| 106 >(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN1344" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Get RGB component values from a pixel stored in the specified pixel format.</P | |
| 121 ><P | |
| 122 >This function uses the entire 8-bit [0..255] range when converting color | |
| 123 components from pixel formats with less than 8-bits per RGB component | |
| 124 (e.g., a completely white pixel in 16-bit RGB565 format would return | |
| 125 [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).</P | |
| 126 ></DIV | |
| 127 ><DIV | |
| 128 CLASS="REFSECT1" | |
| 129 ><A | |
|
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130 NAME="AEN1348" |
| 0 | 131 ></A |
| 132 ><H2 | |
| 133 >See Also</H2 | |
| 134 ><P | |
| 135 ><A | |
| 136 HREF="sdlgetrgba.html" | |
| 137 ><TT | |
| 138 CLASS="FUNCTION" | |
| 139 >SDL_GetRGBA</TT | |
| 140 ></A | |
| 141 >, | |
| 142 <A | |
| 143 HREF="sdlmaprgb.html" | |
| 144 ><TT | |
| 145 CLASS="FUNCTION" | |
| 146 >SDL_MapRGB</TT | |
| 147 ></A | |
| 148 >, | |
| 149 <A | |
| 150 HREF="sdlmaprgba.html" | |
| 151 ><TT | |
| 152 CLASS="FUNCTION" | |
| 153 >SDL_MapRGBA</TT | |
| 154 ></A | |
| 155 >, | |
| 156 <A | |
| 157 HREF="sdlpixelformat.html" | |
| 158 ><SPAN | |
| 159 CLASS="STRUCTNAME" | |
| 160 >SDL_PixelFormat</SPAN | |
| 161 ></A | |
| 162 ></P | |
| 163 ></DIV | |
| 164 ><DIV | |
| 165 CLASS="NAVFOOTER" | |
| 166 ><HR | |
| 167 ALIGN="LEFT" | |
| 168 WIDTH="100%"><TABLE | |
| 169 WIDTH="100%" | |
| 170 BORDER="0" | |
| 171 CELLPADDING="0" | |
| 172 CELLSPACING="0" | |
| 173 ><TR | |
| 174 ><TD | |
| 175 WIDTH="33%" | |
| 176 ALIGN="left" | |
| 177 VALIGN="top" | |
| 178 ><A | |
| 179 HREF="sdlmaprgba.html" | |
| 180 >Prev</A | |
| 181 ></TD | |
| 182 ><TD | |
| 183 WIDTH="34%" | |
| 184 ALIGN="center" | |
| 185 VALIGN="top" | |
| 186 ><A | |
| 187 HREF="index.html" | |
| 188 >Home</A | |
| 189 ></TD | |
| 190 ><TD | |
| 191 WIDTH="33%" | |
| 192 ALIGN="right" | |
| 193 VALIGN="top" | |
| 194 ><A | |
| 195 HREF="sdlgetrgba.html" | |
| 196 >Next</A | |
| 197 ></TD | |
| 198 ></TR | |
| 199 ><TR | |
| 200 ><TD | |
| 201 WIDTH="33%" | |
| 202 ALIGN="left" | |
| 203 VALIGN="top" | |
| 204 >SDL_MapRGBA</TD | |
| 205 ><TD | |
| 206 WIDTH="34%" | |
| 207 ALIGN="center" | |
| 208 VALIGN="top" | |
| 209 ><A | |
| 210 HREF="video.html" | |
| 211 >Up</A | |
| 212 ></TD | |
| 213 ><TD | |
| 214 WIDTH="33%" | |
| 215 ALIGN="right" | |
| 216 VALIGN="top" | |
| 217 >SDL_GetRGBA</TD | |
| 218 ></TR | |
| 219 ></TABLE | |
| 220 ></DIV | |
| 221 ></BODY | |
| 222 ></HTML | |
| 223 > |