Windows 7 64-bit , OpenGL 3.1 is not a standalone software you can download. Instead, it is an Application Programming Interface (API) included directly within your graphics card's drivers. How to Get OpenGL 3.1 Support

Each major manufacturer provides a specific driver that includes OpenGL 3.1 support for Windows 7 64-bit. For Intel Graphics Most integrated Intel GPUs from the "Core i" era (like the Intel HD Graphics 3000

Conclusion

Primitive Restart: Helps efficiently draw complex 3D meshes (like those using many triangle strips) by allowing a single command to restart a primitive.