al_create_vertex_buffer - Allegro 5 API

       Creates  a  vertex  buffer.   Can  return  NULL  if the buffer could not be created (e.g. the system only
       supports write-only buffers).

              Note:

              This is an advanced feature, often unsupported on lower-end video cards.  Be extra mindful of this
              function failing and make arrangements for fallback drawing functionality or a nice error  message
              for users with such lower-end cards.

       Parameters:

       • decl   -  Vertex  type  that  this  buffer  will  hold.   NULL  implies  that  this  buffer  will  hold
         ALLEGRO_VERTEX(3alleg5) vertices

       • initial_data - Memory buffer to copy from to initialize the vertex buffer.  Can be NULL, in which  case
         the buffer is uninitialized.

       • num_vertices - Number of vertices the buffer will hold

       • flags  -  A combination of the ALLEGRO_PRIM_BUFFER_FLAGS(3alleg5) flags specifying how this buffer will
         be created.  Passing 0 is the same as passing ALLEGRO_PRIM_BUFFER_STATIC.

       al_create_vertex_buffer - Allegro 5 API

ALLEGRO_VERTEX_BUFFER(3alleg5), al_destroy_vertex_buffer(3alleg5)

Allegro reference manual                                                        al_create_vertex_buffer(3alleg5)

       5.1.3

              #include <allegro5/allegro_primitives.h>

              ALLEGRO_VERTEX_BUFFER* al_create_vertex_buffer(ALLEGRO_VERTEX_DECL* decl,
                 const void* initial_data, int num_vertices, int flags)