SurfaceFlinger: Hide Z order relatives when relativeOf is hiddenByPolicy.
Now that we are using relative Z for the SurfaceView background we
encounter yet another edge case. During Surface preservation we reparent
the SurfaceView from one WindowStateAnimator to a second. When we reparent
it we hide the old surface and show the new one. However at this time
the background is still relative to the OLD surface, which is Z ordered
on top of the new Surface. To fix this we ensure that if a layers relative
Z parent is hidden by policy the layer is also invisible.
Bug: 136061599
Test: TransactionTest#HideRelativeParentHidesLayer
Change-Id: I941fb9060dab79dba89300a5c86d6ea1a69f577d
diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index f83b3ea..d5f6534 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -1115,6 +1115,56 @@
}
}
+TEST_P(LayerTypeTransactionTest, HideRelativeParentHidesLayer) {
+ sp<SurfaceControl> parent =
+ LayerTransactionTest::createLayer("Parent", 0 /* buffer width */, 0 /* buffer height */,
+ ISurfaceComposerClient::eFXSurfaceColor);
+ sp<SurfaceControl> relativeParent =
+ LayerTransactionTest::createLayer("RelativeParent", 0 /* buffer width */,
+ 0 /* buffer height */, ISurfaceComposerClient::eFXSurfaceColor);
+
+ sp<SurfaceControl> childLayer;
+ ASSERT_NO_FATAL_FAILURE(
+ childLayer = LayerTransactionTest::createLayer("childLayer", 0 /* buffer width */,
+ 0 /* buffer height */,
+ ISurfaceComposerClient::eFXSurfaceColor,
+ parent.get()));
+ Transaction()
+ .setColor(childLayer, half3{1.0f, 0.0f, 0.0f})
+ .setColor(parent, half3{0.0f, 0.0f, 0.0f})
+ .setColor(relativeParent, half3{0.0f, 1.0f, 0.0f})
+ .show(childLayer)
+ .show(parent)
+ .show(relativeParent)
+ .setLayer(parent, mLayerZBase - 1)
+ .setLayer(relativeParent, mLayerZBase)
+ .apply();
+
+ Transaction()
+ .setRelativeLayer(childLayer, relativeParent->getHandle(), 1)
+ .apply();
+
+ {
+ SCOPED_TRACE("setLayer above");
+ // Set layer should get applied and place the child above.
+ std::unique_ptr<ScreenCapture> screenshot;
+ ScreenCapture::captureScreen(&screenshot);
+ screenshot->expectColor(Rect(0, 0, 20, 30), Color::RED);
+ }
+
+ Transaction()
+ .hide(relativeParent)
+ .apply();
+
+ {
+ SCOPED_TRACE("hide relative parent");
+ // The relative should no longer be visible.
+ std::unique_ptr<ScreenCapture> screenshot;
+ ScreenCapture::captureScreen(&screenshot);
+ screenshot->expectColor(Rect(0, 0, 20, 30), Color::BLACK);
+ }
+}
+
void LayerRenderTypeTransactionTest::setRelativeZGroupHelper(uint32_t layerType) {
sp<SurfaceControl> layerR;
sp<SurfaceControl> layerG;