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al_have_opengl_extension(3) Library Functions Manual al_have_opengl_extension(3)

NAME
     al_have_opengl_extension - Allegro 5 API

SYNOPSIS
	    #include <allegro5/allegro_opengl.h>

	    bool al_have_opengl_extension(const char *extension)

DESCRIPTION
     This  function  is  a  helper  to	determine whether an OpenGL extension is
     available on the given display or not.

     Example:

	    bool packedpixels = al_have_opengl_extension("GL_EXT_packed_pixels");

     If packedpixels is true then you can safely use the  constants  related  to
     the packed pixels extension.

     Returns true if the extension is available; false otherwise.

Allegro reference manual			     al_have_opengl_extension(3)

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