Mercurial > sdl-ios-xcode
annotate docs/html/sdlglsetattribute.html @ 1768:814f9f2c7a33
Fixed bug #80
Date: 21 Apr 2003 17:20:20 +0100
From: Alan Swanson <swanson@uklinux.net>
Subject: [SDL] New XFree 4.3 Video Mode Patch
If you look at the unsorted list of modes returned by X, here's mine;
1280 x 1024 @ 85.0 >
1024 x 768 @ 100.3 > USER
800 x 600 @ 125.5 > SET
640 x 480 @ 124.9 >
1280 x 1024 @ 75.0 ]
1280 x 1024 @ 60.0 ]
1280 x 960 @ 85.0 ] X11
1280 x 960 @ 60.0 ] AUTO
1152 x 864 @ 75.0 ]=20
1152 x 768 @ 54.8 ]
960 x 720 @ 120.0 ]
...
640 x 400 @ 85.1 ] 256k
576 x 432 @ 150.0 ] 249k PIXEL
640 x 350 @ 85.1 ] 224k COUNT
576 x 384 @ 109.6 ] 221k
...
The user set modes come first followed by X set modes which are ordered
by decreasing number of pixels and refresh.
The reason why every other library or program not using SDL working is
due to SDL scanning the modes in reverse getting X11 provided modes
modes with the lowest refresh.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 05 May 2006 05:50:26 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_GL_SetAttribute</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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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_GL_GetAttribute" | |
| 17 HREF="sdlglgetattribute.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_GL_SwapBuffers" | |
| 20 HREF="sdlglswapbuffers.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 | |
|
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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="sdlglgetattribute.html" | |
|
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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="sdlglswapbuffers.html" | |
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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="SDLGLSETATTRIBUTE" | |
|
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74 ></A |
|
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75 >SDL_GL_SetAttribute</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN2742" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_GL_SetAttribute -- Set a special SDL/OpenGL attribute</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
|
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87 NAME="AEN2745" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN2746" |
| 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 >int <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_GL_SetAttribute</B | |
| 108 ></CODE | |
| 109 >(SDL_GLattr attr, int value);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN2752" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >Sets the OpenGL <A | |
| 124 HREF="sdlglattr.html" | |
| 125 >attribute</A | |
| 126 > <TT | |
| 127 CLASS="PARAMETER" | |
| 128 ><I | |
| 129 >attr</I | |
| 130 ></TT | |
| 131 > to <TT | |
| 132 CLASS="PARAMETER" | |
| 133 ><I | |
| 134 >value</I | |
| 135 ></TT | |
| 136 >. The attributes you set don't take effect until after a call to <A | |
| 137 HREF="sdlsetvideomode.html" | |
| 138 ><TT | |
| 139 CLASS="FUNCTION" | |
| 140 >SDL_SetVideoMode</TT | |
| 141 ></A | |
| 142 >. You should use <A | |
| 143 HREF="sdlglgetattribute.html" | |
| 144 ><TT | |
| 145 CLASS="FUNCTION" | |
| 146 >SDL_GL_GetAttribute</TT | |
| 147 ></A | |
| 148 > to check the values after a <TT | |
| 149 CLASS="FUNCTION" | |
| 150 >SDL_SetVideoMode</TT | |
| 151 > call.</P | |
| 152 ></DIV | |
| 153 ><DIV | |
| 154 CLASS="REFSECT1" | |
| 155 ><A | |
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156 NAME="AEN2763" |
| 0 | 157 ></A |
| 158 ><H2 | |
| 159 >Return Value</H2 | |
| 160 ><P | |
| 161 >Returns <SPAN | |
| 162 CLASS="RETURNVALUE" | |
| 163 >0</SPAN | |
| 164 > on success, or <SPAN | |
| 165 CLASS="RETURNVALUE" | |
| 166 >-1</SPAN | |
| 167 > on error.</P | |
| 168 ></DIV | |
| 169 ><DIV | |
| 170 CLASS="REFSECT1" | |
| 171 ><A | |
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parents:
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172 NAME="AEN2768" |
| 0 | 173 ></A |
| 174 ><H2 | |
| 175 >Example</H2 | |
| 176 ><PRE | |
| 177 CLASS="PROGRAMLISTING" | |
| 178 >SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 ); | |
| 179 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 ); | |
| 180 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 ); | |
| 181 SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 ); | |
| 182 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); | |
| 183 if ( (screen=SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL )) == NULL ) { | |
| 184 fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError()); | |
| 185 SDL_Quit(); | |
| 186 return; | |
| 187 }</PRE | |
| 188 ><DIV | |
| 189 CLASS="NOTE" | |
| 190 ><BLOCKQUOTE | |
| 191 CLASS="NOTE" | |
| 192 ><P | |
| 193 ><B | |
| 194 >Note: </B | |
| 195 >The <TT | |
| 196 CLASS="LITERAL" | |
| 197 >SDL_DOUBLEBUF</TT | |
| 198 > flag is not required to enable double buffering when setting an OpenGL video mode. Double buffering is enabled or disabled using the SDL_GL_DOUBLEBUFFER attribute.</P | |
| 199 ></BLOCKQUOTE | |
| 200 ></DIV | |
| 201 ></DIV | |
| 202 ><DIV | |
| 203 CLASS="REFSECT1" | |
| 204 ><A | |
|
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205 NAME="AEN2774" |
| 0 | 206 ></A |
| 207 ><H2 | |
| 208 >See Also</H2 | |
| 209 ><P | |
| 210 ><A | |
| 211 HREF="sdlglgetattribute.html" | |
| 212 ><TT | |
| 213 CLASS="FUNCTION" | |
| 214 >SDL_GL_GetAttribute</TT | |
| 215 ></A | |
| 216 >, | |
| 217 <A | |
| 218 HREF="sdlglattr.html" | |
| 219 >GL Attributes</A | |
| 220 ></P | |
| 221 ></DIV | |
| 222 ><DIV | |
| 223 CLASS="NAVFOOTER" | |
| 224 ><HR | |
| 225 ALIGN="LEFT" | |
| 226 WIDTH="100%"><TABLE | |
|
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355632dca928
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parents:
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227 SUMMARY="Footer navigation table" |
| 0 | 228 WIDTH="100%" |
| 229 BORDER="0" | |
| 230 CELLPADDING="0" | |
| 231 CELLSPACING="0" | |
| 232 ><TR | |
| 233 ><TD | |
| 234 WIDTH="33%" | |
| 235 ALIGN="left" | |
| 236 VALIGN="top" | |
| 237 ><A | |
| 238 HREF="sdlglgetattribute.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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239 ACCESSKEY="P" |
| 0 | 240 >Prev</A |
| 241 ></TD | |
| 242 ><TD | |
| 243 WIDTH="34%" | |
| 244 ALIGN="center" | |
| 245 VALIGN="top" | |
| 246 ><A | |
| 247 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
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parents:
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248 ACCESSKEY="H" |
| 0 | 249 >Home</A |
| 250 ></TD | |
| 251 ><TD | |
| 252 WIDTH="33%" | |
| 253 ALIGN="right" | |
| 254 VALIGN="top" | |
| 255 ><A | |
| 256 HREF="sdlglswapbuffers.html" | |
|
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parents:
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diff
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257 ACCESSKEY="N" |
| 0 | 258 >Next</A |
| 259 ></TD | |
| 260 ></TR | |
| 261 ><TR | |
| 262 ><TD | |
| 263 WIDTH="33%" | |
| 264 ALIGN="left" | |
| 265 VALIGN="top" | |
| 266 >SDL_GL_GetAttribute</TD | |
| 267 ><TD | |
| 268 WIDTH="34%" | |
| 269 ALIGN="center" | |
| 270 VALIGN="top" | |
| 271 ><A | |
| 272 HREF="video.html" | |
|
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parents:
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273 ACCESSKEY="U" |
| 0 | 274 >Up</A |
| 275 ></TD | |
| 276 ><TD | |
| 277 WIDTH="33%" | |
| 278 ALIGN="right" | |
| 279 VALIGN="top" | |
| 280 >SDL_GL_SwapBuffers</TD | |
| 281 ></TR | |
| 282 ></TABLE | |
| 283 ></DIV | |
| 284 ></BODY | |
| 285 ></HTML | |
| 286 > |