Winit bugs on macOS

[parasyte]

This is a tracking issue for bugs that affect the invaders example on macOS

• Game does not update while resizing. Fixed by Fix events not being emitted during modal loops on macOS rust-windowing/winit#1173
• Title bar does not show in fullscreen.
• Closing window requires extraneous events.
• Excessive CPU while resizing. (No issue filed?)

[parasyte]

Excessive CPU while resizing: Seems mostly better now with winit 0.20.0-alpha4. I see 50% CPU while dragging a corner of the window, but it goes back to normal levels immediately, even while holding the mouse button but not moving the cursor.

The CPU usage changes depending on window size; maybe it's our resize handler instead of winit? We have to recreate the wgpu swapchain on resize.

[parasyte]

winit 0.22.0 still has these issues.

[parasyte]

Update: winit 0.26 is going to ship with a fix for rust-windowing/winit#1195 🎉 That leaves just the excessive CPU issue, which I think is actually our bug #174

Considering this one closed.