VAOs are useful, particularly for non-trivial applications that use multiple VBOs.  VAOs are a “wrapper” around a VBO, managing state information.  This makes VBOs easier and more efficient to use.

The following functions are used with VAOs:

• void glGenVertexArrays(GLsize n, GLuint *arrays):  creates n VAOs.
• void glBindVertexArray(GLuint array):  binds a VAO.
• void glDeleteVertexArray(GLuint array):  deletes a VAO. 

Tip:  Always use a VAO in conjunction with your VBO

High