[sf] Release the currently presented buffer when setBuffer is called
with null
Fixes a regression introduced in T which ignores a setBuffer call
with a null buffer. The expected behavior should be to release the
currently presented buffer from surfaceflinger. The subsequent frame
will not present this layer so the region behind the layer will be
composited instead.
Bug: 241271897
Test: presubmit
Change-Id: Ie06025c59c58cc75a267b783729996a3cbceef45
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
index 608c53a..ccff1ec 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
@@ -19,6 +19,7 @@
#include <optional>
#include <ostream>
#include <unordered_set>
+#include "ui/LayerStack.h"
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic push
@@ -140,7 +141,7 @@
ClientCompositionTargetSettings&) const = 0;
// Called after the layer is displayed to update the presentation fence
- virtual void onLayerDisplayed(ftl::SharedFuture<FenceResult>) = 0;
+ virtual void onLayerDisplayed(ftl::SharedFuture<FenceResult>, ui::LayerStack layerStack) = 0;
// Gets some kind of identifier for the layer for debug purposes.
virtual const char* getDebugName() const = 0;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
index 12e063b..15e4577 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
@@ -49,7 +49,8 @@
std::optional<compositionengine::LayerFE::LayerSettings>(
compositionengine::LayerFE::ClientCompositionTargetSettings&));
- MOCK_METHOD(void, onLayerDisplayed, (ftl::SharedFuture<FenceResult>), (override));
+ MOCK_METHOD(void, onLayerDisplayed, (ftl::SharedFuture<FenceResult>, ui::LayerStack),
+ (override));
MOCK_CONST_METHOD0(getDebugName, const char*());
MOCK_CONST_METHOD0(getSequence, int32_t());
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index d64231f..793959c 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -1556,8 +1556,9 @@
releaseFence =
Fence::merge("LayerRelease", releaseFence, frame.clientTargetAcquireFence);
}
- layer->getLayerFE().onLayerDisplayed(
- ftl::yield<FenceResult>(std::move(releaseFence)).share());
+ layer->getLayerFE()
+ .onLayerDisplayed(ftl::yield<FenceResult>(std::move(releaseFence)).share(),
+ outputState.layerFilter.layerStack);
}
// We've got a list of layers needing fences, that are disjoint with
@@ -1565,7 +1566,8 @@
// supply them with the present fence.
for (auto& weakLayer : mReleasedLayers) {
if (const auto layer = weakLayer.promote()) {
- layer->onLayerDisplayed(ftl::yield<FenceResult>(frame.presentFence).share());
+ layer->onLayerDisplayed(ftl::yield<FenceResult>(frame.presentFence).share(),
+ outputState.layerFilter.layerStack);
}
}
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
index aaf0f06..9e0e7b5 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
@@ -3220,16 +3220,19 @@
// are passed. This happens to work with the current implementation, but
// would not survive certain calls like Fence::merge() which would return a
// new instance.
- EXPECT_CALL(*mLayer1.layerFE, onLayerDisplayed(_))
- .WillOnce([&layer1Fence](ftl::SharedFuture<FenceResult> futureFenceResult) {
+ EXPECT_CALL(*mLayer1.layerFE, onLayerDisplayed(_, _))
+ .WillOnce([&layer1Fence](ftl::SharedFuture<FenceResult> futureFenceResult,
+ ui::LayerStack) {
EXPECT_EQ(FenceResult(layer1Fence), futureFenceResult.get());
});
- EXPECT_CALL(*mLayer2.layerFE, onLayerDisplayed(_))
- .WillOnce([&layer2Fence](ftl::SharedFuture<FenceResult> futureFenceResult) {
+ EXPECT_CALL(*mLayer2.layerFE, onLayerDisplayed(_, _))
+ .WillOnce([&layer2Fence](ftl::SharedFuture<FenceResult> futureFenceResult,
+ ui::LayerStack) {
EXPECT_EQ(FenceResult(layer2Fence), futureFenceResult.get());
});
- EXPECT_CALL(*mLayer3.layerFE, onLayerDisplayed(_))
- .WillOnce([&layer3Fence](ftl::SharedFuture<FenceResult> futureFenceResult) {
+ EXPECT_CALL(*mLayer3.layerFE, onLayerDisplayed(_, _))
+ .WillOnce([&layer3Fence](ftl::SharedFuture<FenceResult> futureFenceResult,
+ ui::LayerStack) {
EXPECT_EQ(FenceResult(layer3Fence), futureFenceResult.get());
});
@@ -3285,16 +3288,19 @@
EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
// Each released layer should be given the presentFence.
- EXPECT_CALL(*releasedLayer1, onLayerDisplayed(_))
- .WillOnce([&presentFence](ftl::SharedFuture<FenceResult> futureFenceResult) {
+ EXPECT_CALL(*releasedLayer1, onLayerDisplayed(_, _))
+ .WillOnce([&presentFence](ftl::SharedFuture<FenceResult> futureFenceResult,
+ ui::LayerStack) {
EXPECT_EQ(FenceResult(presentFence), futureFenceResult.get());
});
- EXPECT_CALL(*releasedLayer2, onLayerDisplayed(_))
- .WillOnce([&presentFence](ftl::SharedFuture<FenceResult> futureFenceResult) {
+ EXPECT_CALL(*releasedLayer2, onLayerDisplayed(_, _))
+ .WillOnce([&presentFence](ftl::SharedFuture<FenceResult> futureFenceResult,
+ ui::LayerStack) {
EXPECT_EQ(FenceResult(presentFence), futureFenceResult.get());
});
- EXPECT_CALL(*releasedLayer3, onLayerDisplayed(_))
- .WillOnce([&presentFence](ftl::SharedFuture<FenceResult> futureFenceResult) {
+ EXPECT_CALL(*releasedLayer3, onLayerDisplayed(_, _))
+ .WillOnce([&presentFence](ftl::SharedFuture<FenceResult> futureFenceResult,
+ ui::LayerStack) {
EXPECT_EQ(FenceResult(presentFence), futureFenceResult.get());
});