Mercurial > sdl-ios-xcode
annotate docs/html/sdlglgetprocaddress.html @ 753:b14fdadd8311
Date: Thu, 4 Dec 2003 07:48:40 +0200
From: "Mike Gorchak"
Subject: SDL/QNX6 new patch
Here in attachment my patch for the SDL/QNX6 again :) It contain non-crtitical/cosmetic fixes:
1. Fixed window centering at other than the first consoles.
2. Fixed window centering algorithm in case when window height or width are greater than the desktop resolution.
3. Fixed window positioning on other than the first consoles.
4. Fixed occasional input focus lost when switching to fullscreen.
5. Removed the Photon's default chroma color for the overlays, added RGB(12, 6, 12) color instead (very dark pink).
6. Added more checks to the YUV overlay code (fixed crashes during resolution mode switches).
7. Added support for Enter/Backspace keys in unicode mode (used by Maelstrom and by other games).
8. Fixed window restore/maximize function. It works, finally.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 10 Dec 2003 12:35:56 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_GL_GetProcAddress</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_LoadLibrary" | |
| 17 HREF="sdlglloadlibrary.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_GL_GetAttribute" | |
| 20 HREF="sdlglgetattribute.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="sdlglloadlibrary.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="sdlglgetattribute.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="SDLGLGETPROCADDRESS" | |
| 71 >SDL_GL_GetProcAddress</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
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76 NAME="AEN2294" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_GL_GetProcAddress -- Get the address of a GL function</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN2297" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
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91 NAME="AEN2298" |
| 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 >void *<B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_GL_GetProcAddress</B | |
| 105 ></CODE | |
| 106 >(const char* proc);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN2304" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Returns the address of the GL function <TT | |
| 121 CLASS="PARAMETER" | |
| 122 ><I | |
| 123 >proc</I | |
| 124 ></TT | |
| 125 >, or <SPAN | |
| 126 CLASS="RETURNVALUE" | |
| 127 >NULL</SPAN | |
| 128 > if the function is not found. If the GL library is loaded at runtime, with <A | |
| 129 HREF="sdlglloadlibrary.html" | |
| 130 ><TT | |
| 131 CLASS="FUNCTION" | |
| 132 >SDL_GL_LoadLibrary</TT | |
| 133 ></A | |
| 134 >, then <I | |
| 135 CLASS="EMPHASIS" | |
| 136 >all</I | |
| 137 > GL functions must be retrieved this way. Usually this is used to retrieve function pointers to OpenGL extensions.</P | |
| 138 ></DIV | |
| 139 ><DIV | |
| 140 CLASS="REFSECT1" | |
| 141 ><A | |
|
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142 NAME="AEN2312" |
| 0 | 143 ></A |
| 144 ><H2 | |
| 145 >Example</H2 | |
| 146 ><PRE | |
| 147 CLASS="PROGRAMLISTING" | |
| 148 >typedef void (*GL_ActiveTextureARB_Func)(unsigned int); | |
| 149 GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0; | |
| 150 int has_multitexture=1; | |
| 151 . | |
| 152 . | |
| 153 . | |
| 154 /* Get function pointer */ | |
| 155 glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB"); | |
| 156 | |
| 157 /* Check for a valid function ptr */ | |
| 158 if(!glActiveTextureARB_ptr){ | |
| 159 fprintf(stderr, "Multitexture Extensions not present.\n"); | |
| 160 has_multitexture=0; | |
| 161 } | |
| 162 . | |
| 163 . | |
| 164 . | |
| 165 . | |
| 166 if(has_multitexture){ | |
| 167 glActiveTextureARB_ptr(GL_TEXTURE0_ARB); | |
| 168 . | |
| 169 . | |
| 170 } | |
| 171 else{ | |
| 172 . | |
| 173 . | |
| 174 }</PRE | |
| 175 ></DIV | |
| 176 ><DIV | |
| 177 CLASS="REFSECT1" | |
| 178 ><A | |
|
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179 NAME="AEN2315" |
| 0 | 180 ></A |
| 181 ><H2 | |
| 182 >See Also</H2 | |
| 183 ><P | |
| 184 ><A | |
| 185 HREF="sdlglloadlibrary.html" | |
| 186 ><TT | |
| 187 CLASS="FUNCTION" | |
| 188 >SDL_GL_LoadLibrary</TT | |
| 189 ></A | |
| 190 ></P | |
| 191 ></DIV | |
| 192 ><DIV | |
| 193 CLASS="NAVFOOTER" | |
| 194 ><HR | |
| 195 ALIGN="LEFT" | |
| 196 WIDTH="100%"><TABLE | |
| 197 WIDTH="100%" | |
| 198 BORDER="0" | |
| 199 CELLPADDING="0" | |
| 200 CELLSPACING="0" | |
| 201 ><TR | |
| 202 ><TD | |
| 203 WIDTH="33%" | |
| 204 ALIGN="left" | |
| 205 VALIGN="top" | |
| 206 ><A | |
| 207 HREF="sdlglloadlibrary.html" | |
| 208 >Prev</A | |
| 209 ></TD | |
| 210 ><TD | |
| 211 WIDTH="34%" | |
| 212 ALIGN="center" | |
| 213 VALIGN="top" | |
| 214 ><A | |
| 215 HREF="index.html" | |
| 216 >Home</A | |
| 217 ></TD | |
| 218 ><TD | |
| 219 WIDTH="33%" | |
| 220 ALIGN="right" | |
| 221 VALIGN="top" | |
| 222 ><A | |
| 223 HREF="sdlglgetattribute.html" | |
| 224 >Next</A | |
| 225 ></TD | |
| 226 ></TR | |
| 227 ><TR | |
| 228 ><TD | |
| 229 WIDTH="33%" | |
| 230 ALIGN="left" | |
| 231 VALIGN="top" | |
| 232 >SDL_GL_LoadLibrary</TD | |
| 233 ><TD | |
| 234 WIDTH="34%" | |
| 235 ALIGN="center" | |
| 236 VALIGN="top" | |
| 237 ><A | |
| 238 HREF="video.html" | |
| 239 >Up</A | |
| 240 ></TD | |
| 241 ><TD | |
| 242 WIDTH="33%" | |
| 243 ALIGN="right" | |
| 244 VALIGN="top" | |
| 245 >SDL_GL_GetAttribute</TD | |
| 246 ></TR | |
| 247 ></TABLE | |
| 248 ></DIV | |
| 249 ></BODY | |
| 250 ></HTML | |
| 251 > |