Commit 486bbb73 authored May 30, 2017 by Robert Carr

Prevent unnecesary Surface preservation.

We don't save the Surface's pixel format, and so any time
there is a change in the pixel format as described in the params
we trigger a surface preservation. However if an app is switching
from forced translucent (due to HW accel) to explicitly translucent
even though the layout params have changed we don't actually need
to trigger a format change, just toggle the OPAQUE flag.

Bug: 38324871
Test: Launch Chrome Custom Tabs with Lateral Transition Animation from News and Weather App. No black bars. go/wm-smoke
Change-Id: I2151b4470fd7c395fba7aad7d6ffca4c51e55476

parent 5366cfbe

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

+1 −0

Original line number	Diff line number	Diff line
		@@ -687,6 +687,7 @@ class WindowStateAnimator {
		mSurfaceController = new WindowSurfaceController(mSession.mSurfaceSession,
		attrs.getTitle().toString(),
		width, height, format, flags, this, windowType, ownerUid);
		mSurfaceFormat = format;

		w.setHasSurface(true);