tree 1816b5c421995bd6efbdf4444c1d2d1a02722289
parent ca3e8da2a03a9474ef3dd125a4038c16947841c9
author Ahan Wu <ahanwu@google.com> 1561025669 +0800
committer Wu Ahan <ahanwu@google.com> 1561520312 +0000

Move image wallpaper rendering works to background thread.

Doing image wallpaper rendering works on main thread may cause other
animation in system ui janky, so move the drawing task of image
wallpaper to another thread. We also make draw low priority.

Bug: 135601062
Test: observe log and systrace
Change-Id: I7bda6a757cb63f97f6b03c4b035fedbf87f91c96