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| author | 2019-06-03 17:26:48 -0700 | |
|---|---|---|
| committer | 2019-06-03 17:26:48 -0700 | |
| commit | da9c85a1b4b66aa1250a20cec7375a45af11255f (patch) | |
| tree | 486e6d7d8934ffec6f60be8cf79de8606c734f37 /libs/gui/BufferQueueThreadState.cpp | |
| parent | 9d2f210f09d61608a94cd3ac3a4df405fa365ebe (diff) | |
Preserve relative z layer info when moving layers offscreen
When a layer is removed from screen, by reparenting it to null, we need to
remove its relative z info as well. Otherwise, if the layer has a visible
relative parent, it will continue to be drawn.
However, there are some scenarios where it maybe useful to preserve relative z.
When a layer is temporarily moved offscreen, and the layer has children with
relative z ordered to other children, then the client logic can be made simpler
by preserving the relative z info for all the children and only removing relative
z info if its relative parent is not on the pending removal state.
Bug: 132613412
Test: atest SurfaceFlinger_test
Test: go/wm-smoke
Change-Id: Id9e2d164673c9028fb27a38ab2b3005269ad4932
Diffstat (limited to 'libs/gui/BufferQueueThreadState.cpp')
0 files changed, 0 insertions, 0 deletions