[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/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 5783c8d..2cb08a8 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1191,6 +1191,7 @@
// Tracks layers that have pending frames which are candidates for being
// latched.
std::unordered_set<sp<Layer>, SpHash<Layer>> mLayersWithQueuedFrames;
+ std::unordered_set<sp<Layer>, SpHash<Layer>> mLayersWithBuffersRemoved;
// Tracks layers that need to update a display's dirty region.
std::vector<sp<Layer>> mLayersPendingRefresh;