Commit 0078150d authored Nov 23, 2022 by Riddle Hsu

Finish sync for relayout a drawn window

An activity may change visibility in a short time as visible
-> invisible -> visible without reset drawn state. E.g. scene
transition convert to translucent. Then if its window relayout
to clear mRedrawForSyncReported, the window will stuck by
SYNC_STATE_WAITING_FOR_DRAW until it becomes invisible or timeout.

This also relates to non-sync blast so maybeSyncSeqId is -1 then
the window won't report drawn.

Bug: 260093427
Test: Enable shell transition.
      Launch Messages and click its search bar.
      There should be fade out/in animation for activity switch.
Change-Id: I49746b56e7dda76c530366663000b0d11ae779f3

parent 58de71a4

services/core/java/com/android/server/wm/WindowManagerService.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -2587,6 +2587,12 @@ public class WindowManagerService extends IWindowManager.Stub
		&& win.mSyncSeqId > lastSyncSeqId) {
		maybeSyncSeqId = win.shouldSyncWithBuffers() ? win.mSyncSeqId : -1;
		win.markRedrawForSyncReported();
		if (win.mSyncState == WindowContainer.SYNC_STATE_WAITING_FOR_DRAW
		&& winAnimator.mDrawState == WindowStateAnimator.HAS_DRAWN
		&& maybeSyncSeqId < 0) {
		// Do not wait for a drawn window which won't report draw.
		win.onSyncFinishedDrawing();
		}
		} else {
		maybeSyncSeqId = -1;
		}