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al_have_opengl_extension(3alleg5) Allegro reference manual() al_have_opengl_extension(3alleg5) Allegro reference manual()

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.