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Diffstat (limited to 'distrib/sdl-1.2.15/docs/man3/SDL_GL_GetProcAddress.3')
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diff --git a/distrib/sdl-1.2.15/docs/man3/SDL_GL_GetProcAddress.3 b/distrib/sdl-1.2.15/docs/man3/SDL_GL_GetProcAddress.3 new file mode 100644 index 0000000..4fcc7a4 --- /dev/null +++ b/distrib/sdl-1.2.15/docs/man3/SDL_GL_GetProcAddress.3 @@ -0,0 +1,48 @@ +.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 |