Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_GL_GetProcAddress.3 @ 855:aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
On BeOS is should setup it the same way, but it only does when Tracker
wasn't restarted.
I checked code and it looks like a hack to me :(
It looks for env variable and than comapres it to default when OpenTracker
was started after boot, and wasn't restarted. That's probably ok, for that
exact case. Unfortunetly that variable isn't always like that. For
example, after Tracker crashes and is restarted, env variable most
probably is different (depends on how Tracker was restarted, by what
application, etc... for example: i have launcher application from which i
can restart Tracker, and after that nev variable points to that
application's directory, not Tracker's).
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Feb 2004 18:58:40 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_GL_GetProcAddress" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_GL_GetProcAddress\- Get the address of a GL function | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBvoid *\fBSDL_GL_GetProcAddress\fP\fR(\fBconst char* proc\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 Returns the address of the GL function \fBproc\fR, or \fBNULL\fR if the function is not found\&. If the GL library is loaded at runtime, with \fI\fBSDL_GL_LoadLibrary\fP\fR, then \fIall\fP GL functions must be retrieved this way\&. Usually this is used to retrieve function pointers to OpenGL extensions\&. | |
| 12 .SH "EXAMPLE" | |
| 13 .PP | |
| 14 .nf | |
| 15 \f(CWtypedef void (*GL_ActiveTextureARB_Func)(unsigned int); | |
| 16 GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0; | |
| 17 int has_multitexture=1; | |
| 18 \&. | |
| 19 \&. | |
| 20 \&. | |
| 21 /* Get function pointer */ | |
| 22 glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB"); | |
| 23 | |
| 24 /* Check for a valid function ptr */ | |
| 25 if(!glActiveTextureARB_ptr){ | |
| 26 fprintf(stderr, "Multitexture Extensions not present\&. | |
| 27 "); | |
| 28 has_multitexture=0; | |
| 29 } | |
| 30 \&. | |
| 31 \&. | |
| 32 \&. | |
| 33 \&. | |
| 34 if(has_multitexture){ | |
| 35 glActiveTextureARB_ptr(GL_TEXTURE0_ARB); | |
| 36 \&. | |
| 37 \&. | |
| 38 } | |
| 39 else{ | |
| 40 \&. | |
| 41 \&. | |
| 42 }\fR | |
| 43 .fi | |
| 44 .PP | |
| 45 .SH "SEE ALSO" | |
| 46 .PP | |
| 47 \fI\fBSDL_GL_LoadLibrary\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
48 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |