Mercurial > sdl-ios-xcode
annotate docs/html/sdlconvertsurface.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_ConvertSurface</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
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_GetClipRect" | |
| 17 HREF="sdlgetcliprect.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_BlitSurface" | |
| 20 HREF="sdlblitsurface.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="sdlgetcliprect.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="sdlblitsurface.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="SDLCONVERTSURFACE" | |
| 71 >SDL_ConvertSurface</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
76 NAME="AEN1874" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_ConvertSurface -- Converts a surface to the same format as another surface.</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
84 NAME="AEN1877" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
91 NAME="AEN1878" |
| 0 | 92 ></A |
| 93 ><P | |
| 94 ></P | |
| 95 ><PRE | |
| 96 CLASS="FUNCSYNOPSISINFO" | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
97 >#include "SDL/SDL.h"</PRE |
| 0 | 98 ><P |
| 99 ><CODE | |
| 100 ><CODE | |
| 101 CLASS="FUNCDEF" | |
| 102 >SDL_Surface *<B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_ConvertSurface</B | |
| 105 ></CODE | |
| 106 >(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
115 NAME="AEN1884" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Creates a new surface of the specified format, and then copies and maps | |
| 121 the given surface to it. If this function fails, it returns | |
| 122 <TT | |
| 123 CLASS="LITERAL" | |
| 124 >NULL</TT | |
| 125 >.</P | |
| 126 ><P | |
| 127 >The <TT | |
| 128 CLASS="PARAMETER" | |
| 129 ><I | |
| 130 >flags</I | |
| 131 ></TT | |
| 132 > parameter is passed to | |
| 133 <A | |
| 134 HREF="sdlcreatergbsurface.html" | |
| 135 ><TT | |
| 136 CLASS="FUNCTION" | |
| 137 >SDL_CreateRGBSurface</TT | |
| 138 ></A | |
| 139 > | |
| 140 and has those semantics.</P | |
| 141 ><P | |
| 142 >This function is used internally by | |
| 143 <A | |
| 144 HREF="sdldisplayformat.html" | |
| 145 ><TT | |
| 146 CLASS="FUNCTION" | |
| 147 >SDL_DisplayFormat</TT | |
| 148 ></A | |
| 149 >.</P | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
150 ><P |
|
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
151 >This function can only be called after SDL_Init.</P |
| 0 | 152 ></DIV |
| 153 ><DIV | |
| 154 CLASS="REFSECT1" | |
| 155 ><A | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
156 NAME="AEN1896" |
| 0 | 157 ></A |
| 158 ><H2 | |
| 159 >Return Value</H2 | |
| 160 ><P | |
| 161 >Returns either a pointer to the new surface, or | |
| 162 <TT | |
| 163 CLASS="LITERAL" | |
| 164 >NULL</TT | |
| 165 > on error.</P | |
| 166 ></DIV | |
| 167 ><DIV | |
| 168 CLASS="REFSECT1" | |
| 169 ><A | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
170 NAME="AEN1900" |
| 0 | 171 ></A |
| 172 ><H2 | |
| 173 >See Also</H2 | |
| 174 ><P | |
| 175 ><A | |
| 176 HREF="sdlcreatergbsurface.html" | |
| 177 ><TT | |
| 178 CLASS="FUNCTION" | |
| 179 >SDL_CreateRGBSurface</TT | |
| 180 ></A | |
| 181 >, | |
| 182 <A | |
| 183 HREF="sdldisplayformat.html" | |
| 184 ><TT | |
| 185 CLASS="FUNCTION" | |
| 186 >SDL_DisplayFormat</TT | |
| 187 ></A | |
| 188 >, | |
| 189 <A | |
| 190 HREF="sdlpixelformat.html" | |
| 191 ><SPAN | |
| 192 CLASS="STRUCTNAME" | |
| 193 >SDL_PixelFormat</SPAN | |
| 194 ></A | |
| 195 >, | |
| 196 <A | |
| 197 HREF="sdlsurface.html" | |
| 198 ><SPAN | |
| 199 CLASS="STRUCTNAME" | |
| 200 >SDL_Surface</SPAN | |
| 201 ></A | |
| 202 ></P | |
| 203 ></DIV | |
| 204 ><DIV | |
| 205 CLASS="NAVFOOTER" | |
| 206 ><HR | |
| 207 ALIGN="LEFT" | |
| 208 WIDTH="100%"><TABLE | |
| 209 WIDTH="100%" | |
| 210 BORDER="0" | |
| 211 CELLPADDING="0" | |
| 212 CELLSPACING="0" | |
| 213 ><TR | |
| 214 ><TD | |
| 215 WIDTH="33%" | |
| 216 ALIGN="left" | |
| 217 VALIGN="top" | |
| 218 ><A | |
| 219 HREF="sdlgetcliprect.html" | |
| 220 >Prev</A | |
| 221 ></TD | |
| 222 ><TD | |
| 223 WIDTH="34%" | |
| 224 ALIGN="center" | |
| 225 VALIGN="top" | |
| 226 ><A | |
| 227 HREF="index.html" | |
| 228 >Home</A | |
| 229 ></TD | |
| 230 ><TD | |
| 231 WIDTH="33%" | |
| 232 ALIGN="right" | |
| 233 VALIGN="top" | |
| 234 ><A | |
| 235 HREF="sdlblitsurface.html" | |
| 236 >Next</A | |
| 237 ></TD | |
| 238 ></TR | |
| 239 ><TR | |
| 240 ><TD | |
| 241 WIDTH="33%" | |
| 242 ALIGN="left" | |
| 243 VALIGN="top" | |
| 244 >SDL_GetClipRect</TD | |
| 245 ><TD | |
| 246 WIDTH="34%" | |
| 247 ALIGN="center" | |
| 248 VALIGN="top" | |
| 249 ><A | |
| 250 HREF="video.html" | |
| 251 >Up</A | |
| 252 ></TD | |
| 253 ><TD | |
| 254 WIDTH="33%" | |
| 255 ALIGN="right" | |
| 256 VALIGN="top" | |
| 257 >SDL_BlitSurface</TD | |
| 258 ></TR | |
| 259 ></TABLE | |
| 260 ></DIV | |
| 261 ></BODY | |
| 262 ></HTML | |
| 263 > |