Qt Scenegraph and Mir

[Gerry Boland]

Hi folks,
as many of you know, on the current phone/tablet, all the application
switching animations are not done with live surfaces, but instead with
screenshots. This obviously is not ideal, so I want to fix that.

I've been researching ways to more tightly combine Mir surfaces with
Qt/QML, so that a Mir surface integrates nicely with QML, so they can be
transformed and animated with the usual QML syntax. It also discusses
non-GL hardware acceleration, and input handling.

I've written up the results of my research, and several proposed
solutions in this document:
https://docs.google.com/a/canonical.com/document/d/12tzE3Ha7ZJR_U4FZsAqKTgqDkWawXFSxY4Q-6PifgD4/edit?usp=sharing

Anything unclear or vague, please comment and I'll address it as best I can.

I want to open discussions on the topic ASAP, so that we can decide the
best strategy forward, and let me get to work on this!

Thanks
-Gerry