Difference Between Instanced Attributed and non.

[Pryme8]

So when doing somthing like:
var uvRefBuffer = new BABYLON.Buffer(engine, uvRef, false, 2, false, false);
would create the Buffer as non Instanced.
and
var uvRefBuffer = new BABYLON.Buffer(engine, uvRef, false, 2, false, true);
Makes it instanced, what is the difference?
I noticed when I make it instanced things stop working, so I am wondering when would you use that and what is its convention.

[Guest]

when a buffer is flag as instanced it must be used with a shader supporting instancing 

[Guest]

More detailed answer:

Here is the code of the GPU particles which heavily rely on instancing.

https://github.com/BabylonJS/Babylon.js/blob/master/src/Particles/babylon.gpuParticleSystem.ts#L618

you can see that I only draw 4 vertices which are instanced this._currentActiveCount times

The main buffer contains the data for the 4 vertices (and this one is not instanciated ie. it will be repeated for all instances):

https://github.com/BabylonJS/Babylon.js/blob/master/src/Particles/babylon.gpuParticleSystem.ts#L466

and then I have all the data that must be sent to all instances (which is unique per instance)

https://github.com/BabylonJS/Babylon.js/blob/master/src/Particles/babylon.gpuParticleSystem.ts#L398

[Pryme8]

Starting to feel more and more like I need to go back to school... o_O...