Mercurial > sdl-ios-xcode
view docs/man3/SDL_GL_GetProcAddress.3 @ 916:46916168361d
Date: Sun, 25 Jul 2004 23:10:03 +0800
From: Chris Taylor
Subject: SDL for Macintosh Programmer's Workshop: removed dynamic loading
I'm working on a game called D2X which uses SDL, and I recently ported
it to Mac OS 9. I used MPW to build it. It uses OpenGL. To get it to
work, I had to build SDL so it doesn't dynamically load OpenGL. This is
because I don't think MPW supports dynamic loading. The following patch
makes sure when SDL is built under MPW, dynamic loading of shared
libraries is disabled.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 25 Jul 2004 19:43:56 +0000 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_GL_GetProcAddress" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_GL_GetProcAddress\- Get the address of a GL function .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBvoid *\fBSDL_GL_GetProcAddress\fP\fR(\fBconst char* proc\fR); .SH "DESCRIPTION" .PP 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\&. .SH "EXAMPLE" .PP .nf \f(CWtypedef void (*GL_ActiveTextureARB_Func)(unsigned int); GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0; int has_multitexture=1; \&. \&. \&. /* Get function pointer */ glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB"); /* Check for a valid function ptr */ if(!glActiveTextureARB_ptr){ fprintf(stderr, "Multitexture Extensions not present\&. "); has_multitexture=0; } \&. \&. \&. \&. if(has_multitexture){ glActiveTextureARB_ptr(GL_TEXTURE0_ARB); \&. \&. } else{ \&. \&. }\fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_GL_LoadLibrary\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01