Tomski

Awesome will take a look!

Its OK as this is very standalone. I don't have a problem having this merged and built upon. Perhaps we mark it as WIP/Experimental?

We had some similar issue here a while back. https://github.com/libgdx/libgdx/pull/3916 Its probably worth dialling it in to make sure it can be isolated to just VertexArray vs VBOwithVAO directly with...

Yes that is strange. That is marking it as dirty and the buffer data is going to be uploaded every frame when the mesh is bound. Can you try changing...

Yup, I think this is completely unnecessary as sprite batch indices never change from construction. Will be a nice little performance boost. Will do some further testing, and if its...

Seems to be no regressions in behaviour. I want to make some more sophisticated tests to check the behaviours under different types of load. On desktop I can't really see...

I prefer the fail hard immediately with an exception, but this is more consistent with other implementation of Disposable, so think its ok.