Mercurial > sdl-ios-xcode
annotate docs/html/sdlupdaterect.html @ 81:1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
requested video mode is 16 bpp but the real video mode is 32 bpp.
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Mon, 25 Jun 2001 22:16:44 +0000 |
| parents | 55f1f1b3e27d |
| children | e5bc29de3f0a |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_UpdateRect</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_SetVideoMode" | |
| 17 HREF="sdlsetvideomode.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_UpdateRects" | |
| 20 HREF="sdlupdaterects.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="sdlsetvideomode.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="sdlupdaterects.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="SDLUPDATERECT" | |
| 71 >SDL_UpdateRect</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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diff
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76 NAME="AEN940" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_UpdateRect -- Makes sure the given area is updated on the given screen.</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN943" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
|
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diff
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91 NAME="AEN944" |
| 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_UpdateRect</B | |
| 105 ></CODE | |
| 106 >(SDL_Surface *screen, Sint32 x, Sint32 y, Sint32 w, Sint32 h);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN950" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
|
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120 >Makes sure the given area is updated on the given screen. The rectangle must |
|
55f1f1b3e27d
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Sam Lantinga <slouken@lokigames.com>
parents:
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diff
changeset
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121 be confined within the screen boundaries (no clipping is done).</P |
| 0 | 122 ><P |
| 123 >If '<TT | |
| 124 CLASS="PARAMETER" | |
| 125 ><I | |
| 126 >x</I | |
| 127 ></TT | |
| 128 >', '<TT | |
| 129 CLASS="PARAMETER" | |
| 130 ><I | |
| 131 >y</I | |
| 132 ></TT | |
| 133 >', '<TT | |
| 134 CLASS="PARAMETER" | |
| 135 ><I | |
| 136 >w</I | |
| 137 ></TT | |
| 138 >' | |
| 139 and '<TT | |
| 140 CLASS="PARAMETER" | |
| 141 ><I | |
| 142 >h</I | |
| 143 ></TT | |
| 144 >' are all 0, | |
| 145 <TT | |
| 146 CLASS="FUNCTION" | |
| 147 >SDL_UpdateRect</TT | |
| 148 > will update the | |
| 149 entire screen.</P | |
| 150 ><P | |
| 151 >This function should not be called while '<TT | |
| 152 CLASS="PARAMETER" | |
| 153 ><I | |
| 154 >screen</I | |
| 155 ></TT | |
| 156 >' is | |
| 157 <A | |
| 158 HREF="sdllocksurface.html" | |
| 159 >locked</A | |
| 160 >.</P | |
| 161 ></DIV | |
| 162 ><DIV | |
| 163 CLASS="REFSECT1" | |
| 164 ><A | |
|
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parents:
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diff
changeset
|
165 NAME="AEN962" |
| 0 | 166 ></A |
| 167 ><H2 | |
| 168 >See Also</H2 | |
| 169 ><P | |
| 170 ><A | |
| 171 HREF="sdlupdaterects.html" | |
| 172 ><TT | |
| 173 CLASS="FUNCTION" | |
| 174 >SDL_UpdateRects</TT | |
| 175 ></A | |
| 176 >, | |
| 177 <A | |
| 178 HREF="sdlrect.html" | |
| 179 ><SPAN | |
| 180 CLASS="STRUCTNAME" | |
| 181 >SDL_Rect</SPAN | |
| 182 ></A | |
| 183 >, | |
| 184 <A | |
| 185 HREF="sdlsurface.html" | |
| 186 ><SPAN | |
| 187 CLASS="STRUCTNAME" | |
| 188 >SDL_Surface</SPAN | |
| 189 ></A | |
| 190 >, | |
| 191 <A | |
| 192 HREF="sdllocksurface.html" | |
| 193 ><TT | |
| 194 CLASS="FUNCTION" | |
| 195 >SDL_LockSurface</TT | |
| 196 ></A | |
| 197 ></P | |
| 198 ></DIV | |
| 199 ><DIV | |
| 200 CLASS="NAVFOOTER" | |
| 201 ><HR | |
| 202 ALIGN="LEFT" | |
| 203 WIDTH="100%"><TABLE | |
| 204 WIDTH="100%" | |
| 205 BORDER="0" | |
| 206 CELLPADDING="0" | |
| 207 CELLSPACING="0" | |
| 208 ><TR | |
| 209 ><TD | |
| 210 WIDTH="33%" | |
| 211 ALIGN="left" | |
| 212 VALIGN="top" | |
| 213 ><A | |
| 214 HREF="sdlsetvideomode.html" | |
| 215 >Prev</A | |
| 216 ></TD | |
| 217 ><TD | |
| 218 WIDTH="34%" | |
| 219 ALIGN="center" | |
| 220 VALIGN="top" | |
| 221 ><A | |
| 222 HREF="index.html" | |
| 223 >Home</A | |
| 224 ></TD | |
| 225 ><TD | |
| 226 WIDTH="33%" | |
| 227 ALIGN="right" | |
| 228 VALIGN="top" | |
| 229 ><A | |
| 230 HREF="sdlupdaterects.html" | |
| 231 >Next</A | |
| 232 ></TD | |
| 233 ></TR | |
| 234 ><TR | |
| 235 ><TD | |
| 236 WIDTH="33%" | |
| 237 ALIGN="left" | |
| 238 VALIGN="top" | |
| 239 >SDL_SetVideoMode</TD | |
| 240 ><TD | |
| 241 WIDTH="34%" | |
| 242 ALIGN="center" | |
| 243 VALIGN="top" | |
| 244 ><A | |
| 245 HREF="video.html" | |
| 246 >Up</A | |
| 247 ></TD | |
| 248 ><TD | |
| 249 WIDTH="33%" | |
| 250 ALIGN="right" | |
| 251 VALIGN="top" | |
| 252 >SDL_UpdateRects</TD | |
| 253 ></TR | |
| 254 ></TABLE | |
| 255 ></DIV | |
| 256 ></BODY | |
| 257 ></HTML | |
| 258 > |