Mercurial > sdl-ios-xcode
annotate docs/html/sdlglsetattribute.html @ 610:95433459fbd2
Date: Mon, 14 Apr 2003 22:08:27 +0100
From: Patrice Mandin
Subject: [SDL][PATCH] 2 patches for sdl
Here are 2 patches for SDL:
- One is to put the dummy video drivers at the end of the
video drivers list. It gave me problems, when
SDL_VIDEODRIVER is not set, and the dummy driver is used
instead of the platform's driver, just because it is
always available. So the dummy driver must always be at
the end of the list. I suppose picogui and dc video
drivers also don't work.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 15 Apr 2003 15:46:56 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| 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 1.64 |
| 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_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 | |
| 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="sdlglgetattribute.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="sdlglswapbuffers.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="SDLGLSETATTRIBUTE" | |
| 71 >SDL_GL_SetAttribute</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN2358" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_GL_SetAttribute -- Set a special SDL/OpenGL attribute</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN2361" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
|
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91 NAME="AEN2362" |
| 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_GL_SetAttribute</B | |
| 105 ></CODE | |
| 106 >(SDL_GLattr attr, int value);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN2368" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Sets the OpenGL <A | |
| 121 HREF="sdlglattr.html" | |
| 122 >attribute</A | |
| 123 > <TT | |
| 124 CLASS="PARAMETER" | |
| 125 ><I | |
| 126 >attr</I | |
| 127 ></TT | |
| 128 > to <TT | |
| 129 CLASS="PARAMETER" | |
| 130 ><I | |
| 131 >value</I | |
| 132 ></TT | |
| 133 >. The attributes you set don't take effect until after a call to <A | |
| 134 HREF="sdlsetvideomode.html" | |
| 135 ><TT | |
| 136 CLASS="FUNCTION" | |
| 137 >SDL_SetVideoMode</TT | |
| 138 ></A | |
| 139 >. You should use <A | |
| 140 HREF="sdlglgetattribute.html" | |
| 141 ><TT | |
| 142 CLASS="FUNCTION" | |
| 143 >SDL_GL_GetAttribute</TT | |
| 144 ></A | |
| 145 > to check the values after a <TT | |
| 146 CLASS="FUNCTION" | |
| 147 >SDL_SetVideoMode</TT | |
| 148 > call.</P | |
| 149 ></DIV | |
| 150 ><DIV | |
| 151 CLASS="REFSECT1" | |
| 152 ><A | |
|
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153 NAME="AEN2379" |
| 0 | 154 ></A |
| 155 ><H2 | |
| 156 >Return Value</H2 | |
| 157 ><P | |
| 158 >Returns <SPAN | |
| 159 CLASS="RETURNVALUE" | |
| 160 >0</SPAN | |
| 161 > on success, or <SPAN | |
| 162 CLASS="RETURNVALUE" | |
| 163 >-1</SPAN | |
| 164 > on error.</P | |
| 165 ></DIV | |
| 166 ><DIV | |
| 167 CLASS="REFSECT1" | |
| 168 ><A | |
|
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169 NAME="AEN2384" |
| 0 | 170 ></A |
| 171 ><H2 | |
| 172 >Example</H2 | |
| 173 ><PRE | |
| 174 CLASS="PROGRAMLISTING" | |
| 175 >SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 ); | |
| 176 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 ); | |
| 177 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 ); | |
| 178 SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 ); | |
| 179 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); | |
| 180 if ( (screen=SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL )) == NULL ) { | |
| 181 fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError()); | |
| 182 SDL_Quit(); | |
| 183 return; | |
| 184 }</PRE | |
| 185 ><DIV | |
| 186 CLASS="NOTE" | |
| 187 ><BLOCKQUOTE | |
| 188 CLASS="NOTE" | |
| 189 ><P | |
| 190 ><B | |
| 191 >Note: </B | |
| 192 >The <TT | |
| 193 CLASS="LITERAL" | |
| 194 >SDL_DOUBLEBUF</TT | |
| 195 > 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 | |
| 196 ></BLOCKQUOTE | |
| 197 ></DIV | |
| 198 ></DIV | |
| 199 ><DIV | |
| 200 CLASS="REFSECT1" | |
| 201 ><A | |
|
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202 NAME="AEN2390" |
| 0 | 203 ></A |
| 204 ><H2 | |
| 205 >See Also</H2 | |
| 206 ><P | |
| 207 ><A | |
| 208 HREF="sdlglgetattribute.html" | |
| 209 ><TT | |
| 210 CLASS="FUNCTION" | |
| 211 >SDL_GL_GetAttribute</TT | |
| 212 ></A | |
| 213 >, | |
| 214 <A | |
| 215 HREF="sdlglattr.html" | |
| 216 >GL Attributes</A | |
| 217 ></P | |
| 218 ></DIV | |
| 219 ><DIV | |
| 220 CLASS="NAVFOOTER" | |
| 221 ><HR | |
| 222 ALIGN="LEFT" | |
| 223 WIDTH="100%"><TABLE | |
| 224 WIDTH="100%" | |
| 225 BORDER="0" | |
| 226 CELLPADDING="0" | |
| 227 CELLSPACING="0" | |
| 228 ><TR | |
| 229 ><TD | |
| 230 WIDTH="33%" | |
| 231 ALIGN="left" | |
| 232 VALIGN="top" | |
| 233 ><A | |
| 234 HREF="sdlglgetattribute.html" | |
| 235 >Prev</A | |
| 236 ></TD | |
| 237 ><TD | |
| 238 WIDTH="34%" | |
| 239 ALIGN="center" | |
| 240 VALIGN="top" | |
| 241 ><A | |
| 242 HREF="index.html" | |
| 243 >Home</A | |
| 244 ></TD | |
| 245 ><TD | |
| 246 WIDTH="33%" | |
| 247 ALIGN="right" | |
| 248 VALIGN="top" | |
| 249 ><A | |
| 250 HREF="sdlglswapbuffers.html" | |
| 251 >Next</A | |
| 252 ></TD | |
| 253 ></TR | |
| 254 ><TR | |
| 255 ><TD | |
| 256 WIDTH="33%" | |
| 257 ALIGN="left" | |
| 258 VALIGN="top" | |
| 259 >SDL_GL_GetAttribute</TD | |
| 260 ><TD | |
| 261 WIDTH="34%" | |
| 262 ALIGN="center" | |
| 263 VALIGN="top" | |
| 264 ><A | |
| 265 HREF="video.html" | |
| 266 >Up</A | |
| 267 ></TD | |
| 268 ><TD | |
| 269 WIDTH="33%" | |
| 270 ALIGN="right" | |
| 271 VALIGN="top" | |
| 272 >SDL_GL_SwapBuffers</TD | |
| 273 ></TR | |
| 274 ></TABLE | |
| 275 ></DIV | |
| 276 ></BODY | |
| 277 ></HTML | |
| 278 > |