# vertex VBO

        GL.glBufferSubData(GL.GL_ARRAY_BUFFER,
            ctypes.sizeof(ctypes.c_float * entity.id * 3 * 6),
            ctypes.sizeof(vertex_array),
            vertex_array)
 # uv VBO
        GL.glBufferSubData(GL.GL_ARRAY_BUFFER,
            ctypes.sizeof(ctypes.c_float * entity.id * 2 * 6),
            ctypes.sizeof(uv_array), uv_array)