Latest version of all 3 drivers call refresh constantly

[tznind]

Describe the bug

Clicking the mouse causes about 68 screen refreshes (it does eventually stop)

To Reproduce
This changed recently.

1. Add a debug counter to UpdateScreen
2. Click mouse

Expected behavior
Only redraw when something has changed.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[tig]

I probably did this when I fixed a bunch of repaint logic last week. I focused on WindowsDriver.

[BDisp]

@tznind I think you should change the title to reflect that this affect all drivers.

[tig]

I finally got frustrated with all this enough today. I have started a branch where I finally make

• layout decoupled from draw
• enforce that Clear rarely happens
• ensure drivers minimize full repaints
• minimize when Draw/OnDrawContent are called

More soon.