Mercurial > sdl-ios-xcode
annotate docs/html/sdlglgetprocaddress.html @ 803:355632dca928
Updated SDL HTML documentation
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 10 Feb 2004 15:15:40 +0000 |
parents | e5bc29de3f0a |
children |
rev | line source |
---|---|
0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GL_GetProcAddress</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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_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 | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlglloadlibrary.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlglgetattribute.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="SDLGLGETPROCADDRESS" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_GL_GetProcAddress</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN2678" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GL_GetProcAddress -- Get the address of a GL function</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 NAME="AEN2681" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
94 NAME="AEN2682" |
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 >void *<B | |
106 CLASS="FSFUNC" | |
107 >SDL_GL_GetProcAddress</B | |
108 ></CODE | |
109 >(const char* proc);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
118 NAME="AEN2688" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Returns the address of the GL function <TT | |
124 CLASS="PARAMETER" | |
125 ><I | |
126 >proc</I | |
127 ></TT | |
128 >, or <SPAN | |
129 CLASS="RETURNVALUE" | |
130 >NULL</SPAN | |
131 > if the function is not found. If the GL library is loaded at runtime, with <A | |
132 HREF="sdlglloadlibrary.html" | |
133 ><TT | |
134 CLASS="FUNCTION" | |
135 >SDL_GL_LoadLibrary</TT | |
136 ></A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
137 >, then <SPAN |
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
138 CLASS="emphasis" |
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
139 ><I |
0 | 140 CLASS="EMPHASIS" |
141 >all</I | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
142 ></SPAN |
0 | 143 > GL functions must be retrieved this way. Usually this is used to retrieve function pointers to OpenGL extensions.</P |
144 ></DIV | |
145 ><DIV | |
146 CLASS="REFSECT1" | |
147 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
148 NAME="AEN2696" |
0 | 149 ></A |
150 ><H2 | |
151 >Example</H2 | |
152 ><PRE | |
153 CLASS="PROGRAMLISTING" | |
154 >typedef void (*GL_ActiveTextureARB_Func)(unsigned int); | |
155 GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0; | |
156 int has_multitexture=1; | |
157 . | |
158 . | |
159 . | |
160 /* Get function pointer */ | |
161 glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB"); | |
162 | |
163 /* Check for a valid function ptr */ | |
164 if(!glActiveTextureARB_ptr){ | |
165 fprintf(stderr, "Multitexture Extensions not present.\n"); | |
166 has_multitexture=0; | |
167 } | |
168 . | |
169 . | |
170 . | |
171 . | |
172 if(has_multitexture){ | |
173 glActiveTextureARB_ptr(GL_TEXTURE0_ARB); | |
174 . | |
175 . | |
176 } | |
177 else{ | |
178 . | |
179 . | |
180 }</PRE | |
181 ></DIV | |
182 ><DIV | |
183 CLASS="REFSECT1" | |
184 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
185 NAME="AEN2699" |
0 | 186 ></A |
187 ><H2 | |
188 >See Also</H2 | |
189 ><P | |
190 ><A | |
191 HREF="sdlglloadlibrary.html" | |
192 ><TT | |
193 CLASS="FUNCTION" | |
194 >SDL_GL_LoadLibrary</TT | |
195 ></A | |
196 ></P | |
197 ></DIV | |
198 ><DIV | |
199 CLASS="NAVFOOTER" | |
200 ><HR | |
201 ALIGN="LEFT" | |
202 WIDTH="100%"><TABLE | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
203 SUMMARY="Footer navigation table" |
0 | 204 WIDTH="100%" |
205 BORDER="0" | |
206 CELLPADDING="0" | |
207 CELLSPACING="0" | |
208 ><TR | |
209 ><TD | |
210 WIDTH="33%" | |
211 ALIGN="left" | |
212 VALIGN="top" | |
213 ><A | |
214 HREF="sdlglloadlibrary.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
215 ACCESSKEY="P" |
0 | 216 >Prev</A |
217 ></TD | |
218 ><TD | |
219 WIDTH="34%" | |
220 ALIGN="center" | |
221 VALIGN="top" | |
222 ><A | |
223 HREF="index.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
224 ACCESSKEY="H" |
0 | 225 >Home</A |
226 ></TD | |
227 ><TD | |
228 WIDTH="33%" | |
229 ALIGN="right" | |
230 VALIGN="top" | |
231 ><A | |
232 HREF="sdlglgetattribute.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
233 ACCESSKEY="N" |
0 | 234 >Next</A |
235 ></TD | |
236 ></TR | |
237 ><TR | |
238 ><TD | |
239 WIDTH="33%" | |
240 ALIGN="left" | |
241 VALIGN="top" | |
242 >SDL_GL_LoadLibrary</TD | |
243 ><TD | |
244 WIDTH="34%" | |
245 ALIGN="center" | |
246 VALIGN="top" | |
247 ><A | |
248 HREF="video.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
249 ACCESSKEY="U" |
0 | 250 >Up</A |
251 ></TD | |
252 ><TD | |
253 WIDTH="33%" | |
254 ALIGN="right" | |
255 VALIGN="top" | |
256 >SDL_GL_GetAttribute</TD | |
257 ></TR | |
258 ></TABLE | |
259 ></DIV | |
260 ></BODY | |
261 ></HTML | |
262 > |