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al_have_op..._extension(3) Library Functions Manual al_have_op..._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_op..._extension(3)

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