al_have_opengl_extension3
Allegro 5 api
Usage
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#include <allegro5/allegro_opengl.h> bool al_have_opengl_extension(const char *extension)
Overview
This function is a helper to determine whether an OpenGL extension is available on the given display or not.
Example:
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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.