Mercurial > sdl-ios-xcode
annotate docs/html/sdllockyuvoverlay.html @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 21:52:26 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_LockYUVOverlay</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_CreateYUVOverlay" | |
| 17 HREF="sdlcreateyuvoverlay.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_UnlockYUVOverlay" | |
| 20 HREF="sdlunlockyuvoverlay.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="sdlcreateyuvoverlay.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="sdlunlockyuvoverlay.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="SDLLOCKYUVOVERLAY" | |
| 71 >SDL_LockYUVOverlay</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN2460" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_LockYUVOverlay -- Lock an overlay</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN2463" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
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91 NAME="AEN2464" |
| 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 >int <B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_LockYUVOverlay</B | |
| 105 ></CODE | |
| 106 >(SDL_Overlay *overlay);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN2470" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Much the same as <A | |
| 121 HREF="sdllocksurface.html" | |
| 122 ><TT | |
| 123 CLASS="FUNCTION" | |
| 124 >SDL_LockSurface</TT | |
| 125 ></A | |
| 126 >, <TT | |
| 127 CLASS="FUNCTION" | |
| 128 >SDL_LockYUVOverlay</TT | |
| 129 > locks the <A | |
| 130 HREF="sdloverlay.html" | |
| 131 ><TT | |
| 132 CLASS="PARAMETER" | |
| 133 ><I | |
| 134 >overlay</I | |
| 135 ></TT | |
| 136 ></A | |
| 137 > for direct access to pixel data.</P | |
| 138 ></DIV | |
| 139 ><DIV | |
| 140 CLASS="REFSECT1" | |
| 141 ><A | |
|
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142 NAME="AEN2478" |
| 0 | 143 ></A |
| 144 ><H2 | |
| 145 >Return Value</H2 | |
| 146 ><P | |
| 147 >Returns <SPAN | |
| 148 CLASS="RETURNVALUE" | |
| 149 >0</SPAN | |
| 150 > on success, or <SPAN | |
| 151 CLASS="RETURNVALUE" | |
| 152 >-1</SPAN | |
| 153 > on an error.</P | |
| 154 ></DIV | |
| 155 ><DIV | |
| 156 CLASS="REFSECT1" | |
| 157 ><A | |
|
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158 NAME="AEN2483" |
| 0 | 159 ></A |
| 160 ><H2 | |
| 161 >See Also</H2 | |
| 162 ><P | |
| 163 ><A | |
| 164 HREF="sdlunlockyuvoverlay.html" | |
| 165 ><TT | |
| 166 CLASS="FUNCTION" | |
| 167 >SDL_UnlockYUVOverlay</TT | |
| 168 ></A | |
| 169 >, | |
| 170 <A | |
| 171 HREF="sdlcreateyuvoverlay.html" | |
| 172 ><TT | |
| 173 CLASS="FUNCTION" | |
| 174 >SDL_CreateYUVOverlay</TT | |
| 175 ></A | |
| 176 >, | |
| 177 <A | |
| 178 HREF="sdloverlay.html" | |
| 179 ><SPAN | |
| 180 CLASS="STRUCTNAME" | |
| 181 >SDL_Overlay</SPAN | |
| 182 ></A | |
| 183 ></P | |
| 184 ></DIV | |
| 185 ><DIV | |
| 186 CLASS="NAVFOOTER" | |
| 187 ><HR | |
| 188 ALIGN="LEFT" | |
| 189 WIDTH="100%"><TABLE | |
| 190 WIDTH="100%" | |
| 191 BORDER="0" | |
| 192 CELLPADDING="0" | |
| 193 CELLSPACING="0" | |
| 194 ><TR | |
| 195 ><TD | |
| 196 WIDTH="33%" | |
| 197 ALIGN="left" | |
| 198 VALIGN="top" | |
| 199 ><A | |
| 200 HREF="sdlcreateyuvoverlay.html" | |
| 201 >Prev</A | |
| 202 ></TD | |
| 203 ><TD | |
| 204 WIDTH="34%" | |
| 205 ALIGN="center" | |
| 206 VALIGN="top" | |
| 207 ><A | |
| 208 HREF="index.html" | |
| 209 >Home</A | |
| 210 ></TD | |
| 211 ><TD | |
| 212 WIDTH="33%" | |
| 213 ALIGN="right" | |
| 214 VALIGN="top" | |
| 215 ><A | |
| 216 HREF="sdlunlockyuvoverlay.html" | |
| 217 >Next</A | |
| 218 ></TD | |
| 219 ></TR | |
| 220 ><TR | |
| 221 ><TD | |
| 222 WIDTH="33%" | |
| 223 ALIGN="left" | |
| 224 VALIGN="top" | |
| 225 >SDL_CreateYUVOverlay</TD | |
| 226 ><TD | |
| 227 WIDTH="34%" | |
| 228 ALIGN="center" | |
| 229 VALIGN="top" | |
| 230 ><A | |
| 231 HREF="video.html" | |
| 232 >Up</A | |
| 233 ></TD | |
| 234 ><TD | |
| 235 WIDTH="33%" | |
| 236 ALIGN="right" | |
| 237 VALIGN="top" | |
| 238 >SDL_UnlockYUVOverlay</TD | |
| 239 ></TR | |
| 240 ></TABLE | |
| 241 ></DIV | |
| 242 ></BODY | |
| 243 ></HTML | |
| 244 > |