Comment 8 for bug 1256702

That's where I'm confused. "exactly what we have today" does not involve any transparency. Or are you counting the static rendering on the login screen that has a transparent appearance?

I get that a "swipe through" would add a new requirement for a transparent greeter surface (based on my imagination of what "swipe-through" means). But we need to see the design to verify if surface opacity is adequate or per-pixel alpha (shape) is required.

Regardless, if we limit blending to just the greeter surface(s) then I have no complaints.