Merge "Merge damage region when dropping an app buffer" into qt-r1-dev (6cabc2a4) · Commits · e / os / platform_frameworks_native

services/surfaceflinger/BufferLayerConsumer.cpp

+9 −0

Original line number	Diff line number	Diff line
		@@ -369,6 +369,15 @@ const Region& BufferLayerConsumer::getSurfaceDamage() const {
		return mCurrentSurfaceDamage;
		}

		void BufferLayerConsumer::mergeSurfaceDamage(const Region& damage) {
		if (damage.bounds() == Rect::INVALID_RECT \|\|
		mCurrentSurfaceDamage.bounds() == Rect::INVALID_RECT) {
		mCurrentSurfaceDamage = Region::INVALID_REGION;
		} else {
		mCurrentSurfaceDamage \|= damage;
		}
		}

		int BufferLayerConsumer::getCurrentApi() const {
		Mutex::Autolock lock(mMutex);
		return mCurrentApi;

services/surfaceflinger/BufferLayerConsumer.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -140,6 +140,9 @@ public:
		// must be called from SF main thread
		const Region& getSurfaceDamage() const;

		// Merge the given damage region into the current damage region value.
		void mergeSurfaceDamage(const Region& damage);

		// getCurrentApi retrieves the API which queues the current buffer.
		int getCurrentApi() const;

services/surfaceflinger/BufferQueueLayer.cpp

+2 −0

Original line number	Diff line number	Diff line
		@@ -316,6 +316,7 @@ status_t BufferQueueLayer::updateTexImage(bool& recomputeVisibleRegions, nsecs_t
		// and return early
		if (queuedBuffer) {
		Mutex::Autolock lock(mQueueItemLock);
		mConsumer->mergeSurfaceDamage(mQueueItems[0].mSurfaceDamage);
		mFlinger->mTimeStats->removeTimeRecord(layerID, mQueueItems[0].mFrameNumber);
		mQueueItems.removeAt(0);
		mQueuedFrames--;
		@@ -351,6 +352,7 @@ status_t BufferQueueLayer::updateTexImage(bool& recomputeVisibleRegions, nsecs_t
		// Remove any stale buffers that have been dropped during
		// updateTexImage
		while (mQueueItems[0].mFrameNumber != currentFrameNumber) {
		mConsumer->mergeSurfaceDamage(mQueueItems[0].mSurfaceDamage);
		mFlinger->mTimeStats->removeTimeRecord(layerID, mQueueItems[0].mFrameNumber);
		mQueueItems.removeAt(0);
		mQueuedFrames--;

services/surfaceflinger/tests/Transaction_test.cpp

+94 −0

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@

		#include <binder/ProcessState.h>
		#include <gui/BufferItemConsumer.h>
		#include <gui/IProducerListener.h>
		#include <gui/ISurfaceComposer.h>
		#include <gui/LayerState.h>
		#include <gui/Surface.h>
		@@ -6059,4 +6060,97 @@ TEST_F(RelativeZTest, LayerRemovedOffscreenRelativeParent) {
		}
		}

		// This test ensures that when we drop an app buffer in SurfaceFlinger, we merge
		// the dropped buffer's damage region into the next buffer's damage region. If
		// we don't do this, we'll report an incorrect damage region to hardware
		// composer, resulting in broken rendering. This test checks the BufferQueue
		// case.
		//
		// Unfortunately, we don't currently have a way to inspect the damage region
		// SurfaceFlinger sends to hardware composer from a test, so this test requires
		// the dev to manually watch the device's screen during the test to spot broken
		// rendering. Because the results can't be automatically verified, this test is
		// marked disabled.
		TEST_F(LayerTransactionTest, DISABLED_BufferQueueLayerMergeDamageRegionWhenDroppingBuffers) {
		const int width = mDisplayWidth;
		const int height = mDisplayHeight;
		sp<SurfaceControl> layer;
		ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", width, height));
		const auto producer = layer->getIGraphicBufferProducer();
		const sp<IProducerListener> dummyListener(new DummyProducerListener);
		IGraphicBufferProducer::QueueBufferOutput queueBufferOutput;
		ASSERT_EQ(OK,
		producer->connect(dummyListener, NATIVE_WINDOW_API_CPU, true, &queueBufferOutput));

		std::map<int, sp<GraphicBuffer>> slotMap;
		auto slotToBuffer = [&](int slot, sp<GraphicBuffer>* buf) {
		ASSERT_NE(nullptr, buf);
		const auto iter = slotMap.find(slot);
		ASSERT_NE(slotMap.end(), iter);
		*buf = iter->second;
		};

		auto dequeue = [&](int* outSlot) {
		ASSERT_NE(nullptr, outSlot);
		*outSlot = -1;
		int slot;
		sp<Fence> fence;
		uint64_t age;
		FrameEventHistoryDelta timestamps;
		const status_t dequeueResult =
		producer->dequeueBuffer(&slot, &fence, width, height, PIXEL_FORMAT_RGBA_8888,
		GRALLOC_USAGE_SW_READ_OFTEN \| GRALLOC_USAGE_SW_WRITE_OFTEN,
		&age, &timestamps);
		if (dequeueResult == IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) {
		sp<GraphicBuffer> newBuf;
		ASSERT_EQ(OK, producer->requestBuffer(slot, &newBuf));
		ASSERT_NE(nullptr, newBuf.get());
		slotMap[slot] = newBuf;
		} else {
		ASSERT_EQ(OK, dequeueResult);
		}
		*outSlot = slot;
		};

		auto queue = [&](int slot, const Region& damage, nsecs_t displayTime) {
		IGraphicBufferProducer::QueueBufferInput input(
		/timestamp=/displayTime, /isAutoTimestamp=/false, HAL_DATASPACE_UNKNOWN,
		/crop=/Rect::EMPTY_RECT, NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW,
		/transform=/0, Fence::NO_FENCE);
		input.setSurfaceDamage(damage);
		IGraphicBufferProducer::QueueBufferOutput output;
		ASSERT_EQ(OK, producer->queueBuffer(slot, input, &output));
		};

		auto fillAndPostBuffers = [&](const Color& color) {
		int slot1;
		ASSERT_NO_FATAL_FAILURE(dequeue(&slot1));
		int slot2;
		ASSERT_NO_FATAL_FAILURE(dequeue(&slot2));

		sp<GraphicBuffer> buf1;
		ASSERT_NO_FATAL_FAILURE(slotToBuffer(slot1, &buf1));
		sp<GraphicBuffer> buf2;
		ASSERT_NO_FATAL_FAILURE(slotToBuffer(slot2, &buf2));
		fillGraphicBufferColor(buf1, Rect(width, height), color);
		fillGraphicBufferColor(buf2, Rect(width, height), color);

		const auto displayTime = systemTime() + milliseconds_to_nanoseconds(100);
		ASSERT_NO_FATAL_FAILURE(queue(slot1, Region::INVALID_REGION, displayTime));
		ASSERT_NO_FATAL_FAILURE(
		queue(slot2, Region(Rect(width / 3, height / 3, 2 * width / 3, 2 * height / 3)),
		displayTime));
		};

		const auto startTime = systemTime();
		const std::array<Color, 3> colors = {Color::RED, Color::GREEN, Color::BLUE};
		int colorIndex = 0;
		while (nanoseconds_to_seconds(systemTime() - startTime) < 10) {
		ASSERT_NO_FATAL_FAILURE(fillAndPostBuffers(colors[colorIndex++ % colors.size()]));
		std::this_thread::sleep_for(1s);
		}

		ASSERT_EQ(OK, producer->disconnect(NATIVE_WINDOW_API_CPU));
		}

		} // namespace android