al_get_opengl_proc_address - Online Linux Manual PageSection : 3
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Source : Allegro reference manual
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NAMEal_get_opengl_proc_address − Allegro 5 API

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SYNOPSIS #include <allegro5/allegro_opengl.h> void *al_get_opengl_proc_address(const char *name)

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DESCRIPTIONHelper to get the address of an OpenGL symbol Example: How to get the function glMultiTexCoord3fARB that comes with ARB's Multitexture extension: // define the type of the function ALLEGRO_DEFINE_PROC_TYPE(void, MULTI_TEX_FUNC,                          (GLenum, GLfloat, GLfloat, GLfloat)); // declare the function pointer MULTI_TEX_FUNC glMultiTexCoord3fARB; // get the address of the function glMultiTexCoord3fARB = (MULTI_TEX_FUNC) al_get_opengl_proc_address(                                                         "glMultiTexCoord3fARB"); If glMultiTexCoord3fARB is not NULL then it can be used as if it has been defined in the OpenGL core library. Note: Under Windows, OpenGL functions may need a special calling convention, so it's best to always use the ALLEGRO_DEFINE_PROC_TYPE macro when declaring function pointer types for OpenGL functions. Parameters: name − The name of the symbol you want to link to.

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RETURN VALUEA pointer to the symbol if available or NULL otherwise. 0

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