gamma/PSStackedView — comment on commit 73cfe54051d6f6d8188ce8bf85e3a1e3d0ad98cb
File:  line 0
By steipete:

Careful, there is a reason I disabled this! You really should fake the rounded corners, using a mask forces the system to use offscreen-rendering - if this is used for the whole controller you have a *massive* slowdown.