MultitaskingView: Add blurred wallpaper

[lenemter]

Fixes #1796

[danirabbit]

Very cool! Is there a reason we didn't use the Clutter blur effect and implemented our own?

I submitted a branch here to add a brightness effect for some extra contrast, thoughts? #1811

I'm getting a consistent crash on logging into the session and entering the multitasking view. If I switch workspaces first it doesn't crash

[lenemter]

Very cool! Is there a reason we didn't use the Clutter blur effect and implemented our own?

I think it uses a simple shader with a small blur radius and there's no way to change it.

I'm getting a consistent crash on logging into the session and entering the multitasking view. If I switch workspaces first it doesn't crash

Can you provide the backtrace please? It doesn't crash on my side.

[lenemter]

@danirabbit I actually found a typo I made that made it crash with certain blur radius. I hope it fixes the crash for you too

[danirabbit]

LFG!