View source for QtCS2018 Qt3D use cases in automotive

Discussed problems of Qt 3D and 3D in general.

Qt 3D is more a really good toolset for building 3D engines, it's not a full 3D engine out of the box. It allows one to implement 3D engines with modern features. Qt 3D Studio is implementation of a specialised 3D engine on top of Qt 3D.

Action to KDAB and TQtC: Make this point more clear in our documentation and material.

Also discussed the process of doing real time 3D:
* Start with high polygon model.
* Technical artist optimises the model for target HW. Most often this process involves creating a low resolution model, then baking the details of high detail model as normal map textures to that (as one example).
* Iterate this until the results run acceptably and look acceptable on the target HW and display. --> Requires ability to test on target HW.