(commented code is the interesting stuff) faster multiples calls to openGL draw

vispy_glsl_voronoi_mesh.py

    def on_draw(self, event):
        #can be optimized if drawing 1 polyhedron per loop rather than 1 polyhedron's polygon per loop
        gloo.clear()
        self.program.draw(mode="lines", indices=self.indices)

        # self.context.glir.associate(self.program.glir)
        # for i in self.indices:
        #     self.context.glir.associate(i.glir)
        #     selection = i.id, "UNSIGNED_SHORT", i.size
        #     self.context.glir.command('DRAW', self.program._id, "line_strip", selection)