* Update ui.cc
* add a bunch of debugging stuff i don't want to lose
* Revert "add a bunch of debugging stuff i don't want to lose"
This reverts commit 2de6ab5b68bc528e913db68f7fe576b6ebe89a9b.
* enable stencil buffer
* lower ui CPU usage
* Revert "lower ui CPU usage"
This reverts commit 650241c0d89c1476de3995f1dc3f87f671dd1dd7.
old-commit-hash: 936bfcd7bafbb9a102f726fe903c9aa9e46c4283