CE: Snapshot layer metadata
Adds LayerMetadata to LayerSnapshots. LayerMetadata is only populated
when CE enables the new feature flag and the feature flag will only be
enabled in ARC++'s CE.
This change is necessary to split LayerFE from the Layer class as
ARC++'s LayerFE subclass accesses LayerMetadata.
Bug: 238781169
Test: go/wm-smoke
Test: presubmit
Change-Id: Iae405707897eedf5af9025fe628c1cd60b596e10
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/CompositionEngine.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/CompositionEngine.h
index 3faa068..6832ae1 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/CompositionEngine.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/CompositionEngine.h
@@ -18,9 +18,10 @@
#include <TimeStats/TimeStats.h>
#include <utils/Timers.h>
-
#include <memory>
+#include "Feature.h"
+
namespace android {
class HWComposer;
@@ -72,6 +73,8 @@
// TODO(b/121291683): These will become private/internal
virtual void preComposition(CompositionRefreshArgs&) = 0;
+ virtual FeatureFlags getFeatureFlags() const = 0;
+
// Debugging
virtual void dump(std::string&) const = 0;
};
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Feature.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Feature.h
new file mode 100644
index 0000000..ee8000a
--- /dev/null
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Feature.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <ftl/flags.h>
+#include <cstdint>
+
+namespace android::compositionengine {
+
+enum class Feature : int32_t {
+ kSnapshotLayerMetadata = 1 << 0,
+};
+
+using FeatureFlags = ftl::Flags<Feature>;
+
+} // namespace android::compositionengine
\ No newline at end of file
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
index a738da0..fe8cad5 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
@@ -39,6 +39,10 @@
class Fence;
+namespace gui {
+struct LayerMetadata;
+}
+
namespace compositionengine {
struct LayerFECompositionState;
@@ -144,6 +148,8 @@
// Whether the layer should be rendered with rounded corners.
virtual bool hasRoundedCorners() const = 0;
virtual void setWasClientComposed(const sp<Fence>&) {}
+ virtual const gui::LayerMetadata* getMetadata() const = 0;
+ virtual const gui::LayerMetadata* getRelativeMetadata() const = 0;
};
// TODO(b/121291683): Specialize std::hash<> for sp<T> so these and others can
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/CompositionEngine.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/CompositionEngine.h
index 0907926..dd4dbe9 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/CompositionEngine.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/CompositionEngine.h
@@ -48,6 +48,8 @@
void preComposition(CompositionRefreshArgs&) override;
+ FeatureFlags getFeatureFlags() const override;
+
// Debugging
void dump(std::string&) const override;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/CompositionEngine.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/CompositionEngine.h
index f953d0b..a48cc6f 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/CompositionEngine.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/CompositionEngine.h
@@ -53,6 +53,8 @@
MOCK_METHOD1(preComposition, void(CompositionRefreshArgs&));
+ MOCK_CONST_METHOD0(getFeatureFlags, FeatureFlags());
+
MOCK_CONST_METHOD1(dump, void(std::string&));
};
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
index be0dbce..14922a4 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
@@ -53,6 +53,8 @@
MOCK_CONST_METHOD0(getDebugName, const char*());
MOCK_CONST_METHOD0(getSequence, int32_t());
MOCK_CONST_METHOD0(hasRoundedCorners, bool());
+ MOCK_CONST_METHOD0(getMetadata, gui::LayerMetadata*());
+ MOCK_CONST_METHOD0(getRelativeMetadata, gui::LayerMetadata*());
};
} // namespace android::compositionengine::mock
diff --git a/services/surfaceflinger/CompositionEngine/src/CompositionEngine.cpp b/services/surfaceflinger/CompositionEngine/src/CompositionEngine.cpp
index 855507e..a4e1fff 100644
--- a/services/surfaceflinger/CompositionEngine/src/CompositionEngine.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/CompositionEngine.cpp
@@ -140,6 +140,10 @@
mNeedsAnotherUpdate = needsAnotherUpdate;
}
+FeatureFlags CompositionEngine::getFeatureFlags() const {
+ return {};
+}
+
void CompositionEngine::dump(std::string&) const {
// The base class has no state to dump, but derived classes might.
}
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 13437a4..55a32ab 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -4241,6 +4241,38 @@
preparePerFrameCompositionState();
}
+void Layer::updateMetadataSnapshot(const LayerMetadata& parentMetadata) {
+ mSnapshot->layerMetadata = parentMetadata;
+ mSnapshot->layerMetadata.merge(mDrawingState.metadata);
+ for (const sp<Layer>& child : mDrawingChildren) {
+ child->updateMetadataSnapshot(mSnapshot->layerMetadata);
+ }
+}
+
+void Layer::updateRelativeMetadataSnapshot(const LayerMetadata& relativeLayerMetadata,
+ std::unordered_set<Layer*>& visited) {
+ if (visited.find(this) != visited.end()) {
+ ALOGW("Cycle containing layer %s detected in z-order relatives", getDebugName());
+ return;
+ }
+ visited.insert(this);
+
+ mSnapshot->relativeLayerMetadata = relativeLayerMetadata;
+
+ if (mDrawingState.zOrderRelatives.empty()) {
+ return;
+ }
+ LayerMetadata childRelativeLayerMetadata = mSnapshot->relativeLayerMetadata;
+ childRelativeLayerMetadata.merge(mSnapshot->layerMetadata);
+ for (wp<Layer> weakRelative : mDrawingState.zOrderRelatives) {
+ sp<Layer> relative = weakRelative.promote();
+ if (!relative) {
+ continue;
+ }
+ relative->updateRelativeMetadataSnapshot(childRelativeLayerMetadata, visited);
+ }
+}
+
// ---------------------------------------------------------------------------
std::ostream& operator<<(std::ostream& stream, const Layer::FrameRate& rate) {
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 4079d16..4ff86e5 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -166,6 +166,8 @@
ui::Transform transform;
Rect bufferSize;
std::shared_ptr<renderengine::ExternalTexture> externalTexture;
+ LayerMetadata layerMetadata;
+ LayerMetadata relativeLayerMetadata;
};
using FrameRate = scheduler::LayerInfo::FrameRate;
@@ -611,6 +613,12 @@
mClearClientCompositionFenceOnLayerDisplayed = false;
}
+ const LayerMetadata* getMetadata() const override { return &mSnapshot->layerMetadata; }
+
+ const LayerMetadata* getRelativeMetadata() const override {
+ return &mSnapshot->relativeLayerMetadata;
+ }
+
const char* getDebugName() const override;
bool setShadowRadius(float shadowRadius);
@@ -901,6 +909,9 @@
// TODO(b/238781169) Remove direct calls to RenderEngine::drawLayers that don't go through
// CompositionEngine to create a single path for composing layers.
void updateSnapshot(bool updateGeometry);
+ void updateMetadataSnapshot(const LayerMetadata& parentMetadata);
+ void updateRelativeMetadataSnapshot(const LayerMetadata& relativeLayerMetadata,
+ std::unordered_set<Layer*>& visited);
protected:
friend class impl::SurfaceInterceptor;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index e27c713..07e7e3a 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2211,6 +2211,13 @@
}
mPowerAdvisor->setDisplays(displayIds);
+ const bool updateTaskMetadata = mCompositionEngine->getFeatureFlags().test(
+ compositionengine::Feature::kSnapshotLayerMetadata);
+ if (updateTaskMetadata && (mVisibleRegionsDirty || mLayerMetadataSnapshotNeeded)) {
+ updateLayerMetadataSnapshot();
+ mLayerMetadataSnapshotNeeded = false;
+ }
+
if (DOES_CONTAIN_BORDER) {
refreshArgs.borderInfoList.clear();
mDrawingState.traverse([&refreshArgs](Layer* layer) {
@@ -4445,7 +4452,10 @@
layer->setGameModeForTree(static_cast<GameMode>(gameMode));
}
- if (layer->setMetadata(s.metadata)) flags |= eTraversalNeeded;
+ if (layer->setMetadata(s.metadata)) {
+ flags |= eTraversalNeeded;
+ mLayerMetadataSnapshotNeeded = true;
+ }
}
if (what & layer_state_t::eColorSpaceAgnosticChanged) {
if (layer->setColorSpaceAgnostic(s.colorSpaceAgnostic)) {
@@ -7240,6 +7250,31 @@
return true;
}
+void SurfaceFlinger::updateLayerMetadataSnapshot() {
+ LayerMetadata parentMetadata;
+ for (const auto& layer : mDrawingState.layersSortedByZ) {
+ layer->updateMetadataSnapshot(parentMetadata);
+ }
+
+ std::unordered_set<Layer*> visited;
+ mDrawingState.traverse([&visited](Layer* layer) {
+ if (visited.find(layer) != visited.end()) {
+ return;
+ }
+
+ // If the layer isRelativeOf, then either it's relative metadata will be set
+ // recursively when updateRelativeMetadataSnapshot is called on its relative parent or
+ // it's relative parent has been deleted. Clear the layer's relativeLayerMetadata to ensure
+ // that layers with deleted relative parents don't hold stale relativeLayerMetadata.
+ if (layer->getDrawingState().isRelativeOf) {
+ layer->editLayerSnapshot()->relativeLayerMetadata = {};
+ return;
+ }
+
+ layer->updateRelativeMetadataSnapshot({}, visited);
+ });
+}
+
// gui::ISurfaceComposer
binder::Status SurfaceComposerAIDL::bootFinished() {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 3c92d56..0c60137 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -699,6 +699,7 @@
bool latchBuffers();
void updateLayerGeometry();
+ void updateLayerMetadataSnapshot();
void updateInputFlinger();
void persistDisplayBrightness(bool needsComposite) REQUIRES(kMainThreadContext);
@@ -1176,6 +1177,9 @@
bool mSomeDataspaceChanged = false;
bool mForceTransactionDisplayChange = false;
+ // Set if LayerMetadata has changed since the last LayerMetadata snapshot.
+ bool mLayerMetadataSnapshotNeeded = false;
+
// Tracks layers that have pending frames which are candidates for being
// latched.
std::unordered_set<sp<Layer>, SpHash<Layer>> mLayersWithQueuedFrames;
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index dec14d0..4469df0 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -109,6 +109,7 @@
"SurfaceFlinger_SetDisplayStateTest.cpp",
"SurfaceFlinger_SetPowerModeInternalTest.cpp",
"SurfaceFlinger_SetupNewDisplayDeviceInternalTest.cpp",
+ "SurfaceFlinger_UpdateLayerMetadataSnapshotTest.cpp",
"SchedulerTest.cpp",
"SetFrameRateTest.cpp",
"RefreshRateConfigsTest.cpp",
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_UpdateLayerMetadataSnapshotTest.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_UpdateLayerMetadataSnapshotTest.cpp
new file mode 100644
index 0000000..0cf3bdf
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_UpdateLayerMetadataSnapshotTest.cpp
@@ -0,0 +1,212 @@
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <gui/LayerMetadata.h>
+
+#include "TestableSurfaceFlinger.h"
+#include "mock/MockEventThread.h"
+#include "mock/MockVsyncController.h"
+
+namespace android {
+
+using testing::_;
+using testing::Return;
+using FakeHwcDisplayInjector = TestableSurfaceFlinger::FakeHwcDisplayInjector;
+
+class SurfaceFlingerUpdateLayerMetadataSnapshotTest : public testing::Test {
+public:
+ SurfaceFlingerUpdateLayerMetadataSnapshotTest() { setupScheduler(); }
+
+protected:
+ void setupScheduler() {
+ auto eventThread = std::make_unique<mock::EventThread>();
+ auto sfEventThread = std::make_unique<mock::EventThread>();
+
+ EXPECT_CALL(*eventThread, registerDisplayEventConnection(_));
+ EXPECT_CALL(*eventThread, createEventConnection(_, _))
+ .WillOnce(Return(sp<EventThreadConnection>::make(eventThread.get(),
+ mock::EventThread::kCallingUid,
+ ResyncCallback())));
+
+ EXPECT_CALL(*sfEventThread, registerDisplayEventConnection(_));
+ EXPECT_CALL(*sfEventThread, createEventConnection(_, _))
+ .WillOnce(Return(sp<EventThreadConnection>::make(sfEventThread.get(),
+ mock::EventThread::kCallingUid,
+ ResyncCallback())));
+
+ auto vsyncController = std::make_unique<mock::VsyncController>();
+ auto vsyncTracker = std::make_unique<mock::VSyncTracker>();
+
+ EXPECT_CALL(*vsyncTracker, nextAnticipatedVSyncTimeFrom(_)).WillRepeatedly(Return(0));
+ EXPECT_CALL(*vsyncTracker, currentPeriod())
+ .WillRepeatedly(Return(FakeHwcDisplayInjector::DEFAULT_VSYNC_PERIOD));
+ EXPECT_CALL(*vsyncTracker, nextAnticipatedVSyncTimeFrom(_)).WillRepeatedly(Return(0));
+ mFlinger.setupScheduler(std::move(vsyncController), std::move(vsyncTracker),
+ std::move(eventThread), std::move(sfEventThread));
+ }
+
+ sp<Layer> createLayer(const char* name, LayerMetadata layerMetadata) {
+ return sp<Layer>::make(
+ LayerCreationArgs{mFlinger.flinger(), nullptr, name, 0, layerMetadata});
+ }
+
+ TestableSurfaceFlinger mFlinger;
+};
+
+class LayerMetadataBuilder {
+public:
+ LayerMetadataBuilder(LayerMetadata layerMetadata = {}) : mLayerMetadata(layerMetadata) {}
+
+ LayerMetadataBuilder& setInt32(uint32_t key, int32_t value) {
+ mLayerMetadata.setInt32(key, value);
+ return *this;
+ }
+
+ LayerMetadata build() { return mLayerMetadata; }
+
+private:
+ LayerMetadata mLayerMetadata;
+};
+
+bool operator==(const LayerMetadata& lhs, const LayerMetadata& rhs) {
+ return lhs.mMap == rhs.mMap;
+}
+
+std::ostream& operator<<(std::ostream& stream, const LayerMetadata& layerMetadata) {
+ stream << "LayerMetadata{";
+ for (auto it = layerMetadata.mMap.cbegin(); it != layerMetadata.mMap.cend(); it++) {
+ if (it != layerMetadata.mMap.cbegin()) {
+ stream << ", ";
+ }
+ stream << layerMetadata.itemToString(it->first, ":");
+ }
+ return stream << "}";
+}
+
+// Test that the snapshot's layer metadata is set.
+TEST_F(SurfaceFlingerUpdateLayerMetadataSnapshotTest, updatesSnapshotMetadata) {
+ auto layerMetadata = LayerMetadataBuilder().setInt32(METADATA_TASK_ID, 1).build();
+ auto layer = createLayer("layer", layerMetadata);
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layer);
+
+ mFlinger.updateLayerMetadataSnapshot();
+
+ ASSERT_EQ(layer->getLayerSnapshot()->layerMetadata, layerMetadata);
+}
+
+// Test that snapshot layer metadata is set by merging the child's metadata on top of its
+// parent's metadata.
+TEST_F(SurfaceFlingerUpdateLayerMetadataSnapshotTest, mergesSnapshotMetadata) {
+ auto layerAMetadata = LayerMetadataBuilder()
+ .setInt32(METADATA_OWNER_UID, 1)
+ .setInt32(METADATA_TASK_ID, 2)
+ .build();
+ auto layerA = createLayer("parent", layerAMetadata);
+ auto layerBMetadata = LayerMetadataBuilder().setInt32(METADATA_TASK_ID, 3).build();
+ auto layerB = createLayer("child", layerBMetadata);
+ layerA->addChild(layerB);
+ layerA->commitChildList();
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerA);
+
+ mFlinger.updateLayerMetadataSnapshot();
+
+ ASSERT_EQ(layerA->getLayerSnapshot()->layerMetadata, layerAMetadata);
+ auto expectedChildMetadata =
+ LayerMetadataBuilder(layerAMetadata).setInt32(METADATA_TASK_ID, 3).build();
+ ASSERT_EQ(layerB->getLayerSnapshot()->layerMetadata, expectedChildMetadata);
+}
+
+// Test that snapshot relative layer metadata is set to the parent's layer metadata merged on top of
+// that parent's relative layer metadata.
+TEST_F(SurfaceFlingerUpdateLayerMetadataSnapshotTest, updatesRelativeMetadata) {
+ auto layerAMetadata = LayerMetadataBuilder().setInt32(METADATA_TASK_ID, 1).build();
+ auto layerA = createLayer("relative-parent", layerAMetadata);
+ auto layerAHandle = layerA->getHandle();
+ auto layerBMetadata = LayerMetadataBuilder().setInt32(METADATA_TASK_ID, 2).build();
+ auto layerB = createLayer("relative-child", layerBMetadata);
+ layerB->setRelativeLayer(layerAHandle, 1);
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerA);
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerB);
+
+ mFlinger.updateLayerMetadataSnapshot();
+
+ ASSERT_EQ(layerA->getLayerSnapshot()->relativeLayerMetadata, LayerMetadata{});
+ ASSERT_EQ(layerB->getLayerSnapshot()->relativeLayerMetadata, layerAMetadata);
+}
+
+// Test that snapshot relative layer metadata is set correctly when a layer is interleaved within
+// two other layers.
+//
+// Layer
+// A
+// / \
+// B D
+// /
+// C
+//
+// Z-order Relatives
+// B <- D <- C
+TEST_F(SurfaceFlingerUpdateLayerMetadataSnapshotTest, updatesRelativeMetadataInterleaved) {
+ auto layerAMetadata = LayerMetadataBuilder().setInt32(METADATA_OWNER_UID, 1).build();
+ auto layerA = createLayer("layer-a", layerAMetadata);
+ auto layerBMetadata = LayerMetadataBuilder()
+ .setInt32(METADATA_TASK_ID, 2)
+ .setInt32(METADATA_OWNER_PID, 3)
+ .build();
+ auto layerB = createLayer("layer-b", layerBMetadata);
+ auto layerBHandle = layerB->getHandle();
+ auto layerC = createLayer("layer-c", {});
+ auto layerDMetadata = LayerMetadataBuilder().setInt32(METADATA_TASK_ID, 4).build();
+ auto layerD = createLayer("layer-d", layerDMetadata);
+ auto layerDHandle = layerD->getHandle();
+ layerB->addChild(layerC);
+ layerA->addChild(layerB);
+ layerA->addChild(layerD);
+ layerC->setRelativeLayer(layerDHandle, 1);
+ layerD->setRelativeLayer(layerBHandle, 1);
+ layerA->commitChildList();
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerA);
+
+ mFlinger.updateLayerMetadataSnapshot();
+
+ auto expectedLayerDRelativeMetadata = LayerMetadataBuilder()
+ // From layer A, parent of relative parent
+ .setInt32(METADATA_OWNER_UID, 1)
+ // From layer B, relative parent
+ .setInt32(METADATA_TASK_ID, 2)
+ .setInt32(METADATA_OWNER_PID, 3)
+ .build();
+ ASSERT_EQ(layerD->getLayerSnapshot()->relativeLayerMetadata, expectedLayerDRelativeMetadata);
+ auto expectedLayerCRelativeMetadata =
+ LayerMetadataBuilder()
+ // From layer A, parent of relative parent
+ .setInt32(METADATA_OWNER_UID, 1)
+ // From layer B, relative parent of relative parent
+ .setInt32(METADATA_OWNER_PID, 3)
+ // From layer D, relative parent
+ .setInt32(METADATA_TASK_ID, 4)
+ .build();
+ ASSERT_EQ(layerC->getLayerSnapshot()->relativeLayerMetadata, expectedLayerCRelativeMetadata);
+}
+
+TEST_F(SurfaceFlingerUpdateLayerMetadataSnapshotTest,
+ updatesRelativeMetadataMultipleRelativeChildren) {
+ auto layerAMetadata = LayerMetadataBuilder().setInt32(METADATA_OWNER_UID, 1).build();
+ auto layerA = createLayer("layer-a", layerAMetadata);
+ auto layerAHandle = layerA->getHandle();
+ auto layerB = createLayer("layer-b", {});
+ auto layerC = createLayer("layer-c", {});
+ layerB->setRelativeLayer(layerAHandle, 1);
+ layerC->setRelativeLayer(layerAHandle, 2);
+ layerA->commitChildList();
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerA);
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerB);
+ mFlinger.mutableDrawingState().layersSortedByZ.add(layerC);
+
+ mFlinger.updateLayerMetadataSnapshot();
+
+ ASSERT_EQ(layerA->getLayerSnapshot()->relativeLayerMetadata, LayerMetadata{});
+ ASSERT_EQ(layerB->getLayerSnapshot()->relativeLayerMetadata, layerAMetadata);
+ ASSERT_EQ(layerC->getLayerSnapshot()->relativeLayerMetadata, layerAMetadata);
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 2c9c451..13389a1 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -477,6 +477,8 @@
return mFlinger->mirrorLayer(args, mirrorFromHandle, outHandle, outLayerId);
}
+ void updateLayerMetadataSnapshot() { mFlinger->updateLayerMetadataSnapshot(); }
+
/* ------------------------------------------------------------------------
* Read-only access to private data to assert post-conditions.
*/