Mercurial > sdl-ios-xcode
annotate docs/html/sdlglsetattribute.html @ 571:8e3ce997621c
Date: Thu, 16 Jan 2003 13:48:31 +0200
From: "Mike Gorchak"
Subject: All QNX patches
whole patches concerning QNX. Almost all code has been rewritten by Julian
and me. Added initial support for hw overlays in QNX and many many others
fixes.
P.S. This patches has been reviewed by Dave Rempel from QSSL and included in
SDL 1.2.5 distribution, which coming on 3rd party CD for newest 6.2.1
version of QNX, which will be available soon.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 20 Jan 2003 01:38:37 +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 > |