Maintain the active buffer when clearing buffer slots
When an app discards graphic buffers, for example when a MediaCodec
disconnects from a surface, those buffers will be uncached and removed
from HWC buffer slots. The active buffer, however, should still remain
active until the next buffer is queued up.
Bug: 262037933
Bug: 258196272
Test: atest OutputLayerUncacheBufferTest
Test: atest VtsHalGraphicsComposer3_TargetTest
Test: atest VtsHalGraphicsComposerV2_2TargetTest
Change-Id: I7c4eefb17e8bad694d698f9ad6d1d289f4af8d2c
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index 821025c..1c2b8b5 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -179,7 +179,9 @@
/* see setClientTarget for the purpose of slot */
virtual Error setLayerBuffer(Display display, Layer layer, uint32_t slot,
const sp<GraphicBuffer>& buffer, int acquireFence) = 0;
- virtual Error clearLayerBufferSlot(Display display, Layer layer, uint32_t slot) = 0;
+ virtual Error setLayerBufferSlotsToClear(Display display, Layer layer,
+ const std::vector<uint32_t>& slotsToClear,
+ uint32_t activeBufferSlot) = 0;
virtual Error setLayerSurfaceDamage(Display display, Layer layer,
const std::vector<IComposerClient::Rect>& damage) = 0;
virtual Error setLayerBlendMode(Display display, Layer layer,