Remove extra glFlush from handleMessageRefresh().
For BufferQueueLayers, the GL flush fence was already passed to
BufferLayerConsumer::addReleaseFence during post composition for buffer
synchronization when releasing a buffer, so passing the same fence isn't
necessary.
For BufferStateLayers, this fence shouldn't be necessary for merging
with the buffer's acquire fence in latchBuffer, since buffer readiness
for the current buffer shouldn't depend on whether the prior buffer was
finished being used in gpu composition.
So, the fence returned by the extra glFlush call isn't necessary, so we
can just remove the call + plumbing entirely.
Bug: 117103118
Change-Id: Iafeb33dab46213f711ee2ecb59731d003263a551
Test: apct tests, go/wm-smoke, cts
Test: chrome debug apk
diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index c077b68..b4952aa 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -380,8 +380,7 @@
return true;
}
-bool BufferLayer::latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime,
- const sp<Fence>& releaseFence) {
+bool BufferLayer::latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime) {
ATRACE_CALL();
bool refreshRequired = latchSidebandStream(recomputeVisibleRegions);
@@ -420,7 +419,7 @@
return false;
}
- status_t err = updateTexImage(recomputeVisibleRegions, latchTime, releaseFence);
+ status_t err = updateTexImage(recomputeVisibleRegions, latchTime);
if (err != NO_ERROR) {
return false;
}
diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index d358bae..e3b10fc 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -93,11 +93,7 @@
// the visible regions need to be recomputed (this is a fairly heavy
// operation, so this should be set only if needed). Typically this is used
// to figure out if the content or size of a surface has changed.
- // If there was a GL composition step rendering the previous frame, then
- // releaseFence will be populated with a native fence that fires when
- // composition has completed.
- bool latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime,
- const sp<Fence>& releaseFence) override;
+ bool latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime) override;
bool isBufferLatched() const override { return mRefreshPending; }
@@ -142,8 +138,7 @@
virtual void setFilteringEnabled(bool enabled) = 0;
virtual status_t bindTextureImage() = 0;
- virtual status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
- const sp<Fence>& flushFence) = 0;
+ virtual status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime) = 0;
virtual status_t updateActiveBuffer() = 0;
virtual status_t updateFrameNumber(nsecs_t latchTime) = 0;
diff --git a/services/surfaceflinger/BufferLayerConsumer.cpp b/services/surfaceflinger/BufferLayerConsumer.cpp
index 7ed8184..6866e5c 100644
--- a/services/surfaceflinger/BufferLayerConsumer.cpp
+++ b/services/surfaceflinger/BufferLayerConsumer.cpp
@@ -100,8 +100,7 @@
status_t BufferLayerConsumer::updateTexImage(BufferRejecter* rejecter, nsecs_t expectedPresentTime,
bool* autoRefresh, bool* queuedBuffer,
- uint64_t maxFrameNumber,
- const sp<Fence>& releaseFence) {
+ uint64_t maxFrameNumber) {
ATRACE_CALL();
BLC_LOGV("updateTexImage");
Mutex::Autolock lock(mMutex);
@@ -146,7 +145,7 @@
}
// Release the previous buffer.
- err = updateAndReleaseLocked(item, &mPendingRelease, releaseFence);
+ err = updateAndReleaseLocked(item, &mPendingRelease);
if (err != NO_ERROR) {
return err;
}
@@ -224,25 +223,11 @@
}
status_t BufferLayerConsumer::updateAndReleaseLocked(const BufferItem& item,
- PendingRelease* pendingRelease,
- const sp<Fence>& releaseFence) {
+ PendingRelease* pendingRelease) {
status_t err = NO_ERROR;
int slot = item.mSlot;
- // Do whatever sync ops we need to do before releasing the old slot.
- if (slot != mCurrentTexture) {
- err = syncForReleaseLocked(releaseFence);
- if (err != NO_ERROR) {
- // Release the buffer we just acquired. It's not safe to
- // release the old buffer, so instead we just drop the new frame.
- // As we are still under lock since acquireBuffer, it is safe to
- // release by slot.
- releaseBufferLocked(slot, mSlots[slot].mGraphicBuffer);
- return err;
- }
- }
-
BLC_LOGV("updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)", mCurrentTexture,
mCurrentTextureBuffer != nullptr ? mCurrentTextureBuffer->handle : 0, slot,
mSlots[slot].mGraphicBuffer->handle);
@@ -298,30 +283,6 @@
return mRE.bindExternalTextureBuffer(mTexName, mCurrentTextureBuffer, mCurrentFence, false);
}
-status_t BufferLayerConsumer::syncForReleaseLocked(const sp<Fence>& releaseFence) {
- BLC_LOGV("syncForReleaseLocked");
-
- if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
- if (mRE.useNativeFenceSync() && releaseFence != Fence::NO_FENCE) {
- // TODO(alecmouri): fail further upstream if the fence is invalid
- if (!releaseFence->isValid()) {
- BLC_LOGE("syncForReleaseLocked: failed to flush RenderEngine");
- return UNKNOWN_ERROR;
- }
- status_t err =
- addReleaseFenceLocked(mCurrentTexture, mCurrentTextureBuffer, releaseFence);
- if (err != OK) {
- BLC_LOGE("syncForReleaseLocked: error adding release fence: "
- "%s (%d)",
- strerror(-err), err);
- return err;
- }
- }
- }
-
- return OK;
-}
-
void BufferLayerConsumer::getTransformMatrix(float mtx[16]) {
Mutex::Autolock lock(mMutex);
memcpy(mtx, mCurrentTransformMatrix, sizeof(mCurrentTransformMatrix));
diff --git a/services/surfaceflinger/BufferLayerConsumer.h b/services/surfaceflinger/BufferLayerConsumer.h
index e2ef399..e2a6d2e 100644
--- a/services/surfaceflinger/BufferLayerConsumer.h
+++ b/services/surfaceflinger/BufferLayerConsumer.h
@@ -92,8 +92,7 @@
// used to reject the newly acquired buffer. It also does not bind the
// RenderEngine texture until bindTextureImage is called.
status_t updateTexImage(BufferRejecter* rejecter, nsecs_t expectedPresentTime,
- bool* autoRefresh, bool* queuedBuffer, uint64_t maxFrameNumber,
- const sp<Fence>& releaseFence);
+ bool* autoRefresh, bool* queuedBuffer, uint64_t maxFrameNumber);
// See BufferLayerConsumer::bindTextureImageLocked().
status_t bindTextureImage();
@@ -212,8 +211,7 @@
// completion of the method will instead be returned to the caller, so that
// it may call releaseBufferLocked itself later.
status_t updateAndReleaseLocked(const BufferItem& item,
- PendingRelease* pendingRelease = nullptr,
- const sp<Fence>& releaseFence = Fence::NO_FENCE);
+ PendingRelease* pendingRelease = nullptr);
// Binds mTexName and the current buffer to TEXTURE_EXTERNAL target.
// If the bind succeeds, this calls doFenceWait.
@@ -244,12 +242,6 @@
// access the current texture buffer.
status_t doFenceWaitLocked() const;
- // syncForReleaseLocked performs the synchronization needed to release the
- // current slot from RenderEngine. If needed it will set the current
- // slot's fence to guard against a producer accessing the buffer before
- // the outstanding accesses have completed.
- status_t syncForReleaseLocked(const sp<Fence>& releaseFence);
-
// The default consumer usage flags that BufferLayerConsumer always sets on its
// BufferQueue instance; these will be OR:d with any additional flags passed
// from the BufferLayerConsumer user. In particular, BufferLayerConsumer will always
diff --git a/services/surfaceflinger/BufferQueueLayer.cpp b/services/surfaceflinger/BufferQueueLayer.cpp
index 5a60fcd..5fe8067 100644
--- a/services/surfaceflinger/BufferQueueLayer.cpp
+++ b/services/surfaceflinger/BufferQueueLayer.cpp
@@ -225,8 +225,7 @@
return mConsumer->bindTextureImage();
}
-status_t BufferQueueLayer::updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
- const sp<Fence>& releaseFence) {
+status_t BufferQueueLayer::updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime) {
// This boolean is used to make sure that SurfaceFlinger's shadow copy
// of the buffer queue isn't modified when the buffer queue is returning
// BufferItem's that weren't actually queued. This can happen in shared
@@ -264,9 +263,8 @@
const uint64_t maxFrameNumberToAcquire =
std::min(mLastFrameNumberReceived.load(), lastSignaledFrameNumber);
- status_t updateResult =
- mConsumer->updateTexImage(&r, expectedPresentTime, &mAutoRefresh, &queuedBuffer,
- maxFrameNumberToAcquire, releaseFence);
+ status_t updateResult = mConsumer->updateTexImage(&r, expectedPresentTime, &mAutoRefresh,
+ &queuedBuffer, maxFrameNumberToAcquire);
if (updateResult == BufferQueue::PRESENT_LATER) {
// Producer doesn't want buffer to be displayed yet. Signal a
// layer update so we check again at the next opportunity.
@@ -393,7 +391,7 @@
void BufferQueueLayer::fakeVsync() {
mRefreshPending = false;
bool ignored = false;
- latchBuffer(ignored, systemTime(), Fence::NO_FENCE);
+ latchBuffer(ignored, systemTime());
usleep(16000);
releasePendingBuffer(systemTime());
}
diff --git a/services/surfaceflinger/BufferQueueLayer.h b/services/surfaceflinger/BufferQueueLayer.h
index 30107e2..fbb8c14 100644
--- a/services/surfaceflinger/BufferQueueLayer.h
+++ b/services/surfaceflinger/BufferQueueLayer.h
@@ -91,8 +91,7 @@
void setFilteringEnabled(bool enabled) override;
status_t bindTextureImage() override;
- status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
- const sp<Fence>& releaseFence) override;
+ status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime) override;
status_t updateActiveBuffer() override;
status_t updateFrameNumber(nsecs_t latchTime) override;
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index a3d5b89..e48c41e 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -473,8 +473,7 @@
return engine.bindExternalTextureBuffer(mTextureName, s.buffer, s.acquireFence, false);
}
-status_t BufferStateLayer::updateTexImage(bool& /*recomputeVisibleRegions*/, nsecs_t latchTime,
- const sp<Fence>& releaseFence) {
+status_t BufferStateLayer::updateTexImage(bool& /*recomputeVisibleRegions*/, nsecs_t latchTime) {
const State& s(getDrawingState());
if (!s.buffer) {
@@ -516,59 +515,7 @@
handle->latchTime = latchTime;
}
- // Handle sync fences
- if (SyncFeatures::getInstance().useNativeFenceSync() && releaseFence != Fence::NO_FENCE) {
- // TODO(alecmouri): Fail somewhere upstream if the fence is invalid.
- if (!releaseFence->isValid()) {
- mFlinger->mTimeStats->onDestroy(layerID);
- return UNKNOWN_ERROR;
- }
-
- // Check status of fences first because merging is expensive.
- // Merging an invalid fence with any other fence results in an
- // invalid fence.
- auto currentStatus = s.acquireFence->getStatus();
- if (currentStatus == Fence::Status::Invalid) {
- ALOGE("Existing fence has invalid state");
- mFlinger->mTimeStats->onDestroy(layerID);
- return BAD_VALUE;
- }
-
- auto incomingStatus = releaseFence->getStatus();
- if (incomingStatus == Fence::Status::Invalid) {
- ALOGE("New fence has invalid state");
- mDrawingState.acquireFence = releaseFence;
- mFlinger->mTimeStats->onDestroy(layerID);
- return BAD_VALUE;
- }
-
- // If both fences are signaled or both are unsignaled, we need to merge
- // them to get an accurate timestamp.
- if (currentStatus == incomingStatus) {
- char fenceName[32] = {};
- snprintf(fenceName, 32, "%.28s:%d", mName.string(), mFrameNumber);
- sp<Fence> mergedFence =
- Fence::merge(fenceName, mDrawingState.acquireFence, releaseFence);
- if (!mergedFence.get()) {
- ALOGE("failed to merge release fences");
- // synchronization is broken, the best we can do is hope fences
- // signal in order so the new fence will act like a union
- mDrawingState.acquireFence = releaseFence;
- mFlinger->mTimeStats->onDestroy(layerID);
- return BAD_VALUE;
- }
- mDrawingState.acquireFence = mergedFence;
- } else if (incomingStatus == Fence::Status::Unsignaled) {
- // If one fence has signaled and the other hasn't, the unsignaled
- // fence will approximately correspond with the correct timestamp.
- // There's a small race if both fences signal at about the same time
- // and their statuses are retrieved with unfortunate timing. However,
- // by this point, they will have both signaled and only the timestamp
- // will be slightly off; any dependencies after this point will
- // already have been met.
- mDrawingState.acquireFence = releaseFence;
- }
- } else {
+ if (!SyncFeatures::getInstance().useNativeFenceSync()) {
// Bind the new buffer to the GL texture.
//
// Older devices require the "implicit" synchronization provided
diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
index a97f0a4..0b03f49 100644
--- a/services/surfaceflinger/BufferStateLayer.h
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -125,8 +125,7 @@
void setFilteringEnabled(bool enabled) override;
status_t bindTextureImage() override;
- status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
- const sp<Fence>& releaseFence) override;
+ status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime) override;
status_t updateActiveBuffer() override;
status_t updateFrameNumber(nsecs_t latchTime) override;
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 8ae057f..36885db 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -534,8 +534,7 @@
* operation, so this should be set only if needed). Typically this is used
* to figure out if the content or size of a surface has changed.
*/
- virtual bool latchBuffer(bool& /*recomputeVisibleRegions*/, nsecs_t /*latchTime*/,
- const sp<Fence>& /*releaseFence*/) {
+ virtual bool latchBuffer(bool& /*recomputeVisibleRegions*/, nsecs_t /*latchTime*/) {
return {};
}
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 08ba17a..0ffcae4 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1813,18 +1813,6 @@
mHadClientComposition || getHwComposer().hasClientComposition(displayId);
}
- // Setup RenderEngine sync fences if native sync is supported.
- if (getRenderEngine().useNativeFenceSync()) {
- if (mHadClientComposition) {
- base::unique_fd flushFence(getRenderEngine().flush());
- ALOGE_IF(flushFence < 0, "Failed to flush RenderEngine!");
- getBE().flushFence = new Fence(std::move(flushFence));
- } else {
- // Cleanup for hygiene.
- getBE().flushFence = Fence::NO_FENCE;
- }
- }
-
mVsyncModulator.onRefreshed(mHadClientComposition);
getBE().mEndOfFrameCompositionInfo = std::move(getBE().mCompositionInfo);
@@ -3157,7 +3145,7 @@
void SurfaceFlinger::latchAndReleaseBuffer(const sp<Layer>& layer) {
if (layer->hasReadyFrame()) {
bool ignored = false;
- layer->latchBuffer(ignored, systemTime(), Fence::NO_FENCE);
+ layer->latchBuffer(ignored, systemTime());
}
layer->releasePendingBuffer(systemTime());
}
@@ -3407,7 +3395,7 @@
Mutex::Autolock lock(mStateLock);
for (auto& layer : mLayersWithQueuedFrames) {
- if (layer->latchBuffer(visibleRegions, latchTime, getBE().flushFence)) {
+ if (layer->latchBuffer(visibleRegions, latchTime)) {
mLayersPendingRefresh.push_back(layer);
}
layer->useSurfaceDamage();
@@ -3417,11 +3405,6 @@
}
}
- // Clear the renderengine fence here...
- // downstream code assumes that a cleared fence == NO_FENCE, so reassign to
- // clear instead of sp::clear.
- getBE().flushFence = Fence::NO_FENCE;
-
mVisibleRegionsDirty |= visibleRegions;
// If we will need to wake up at some time in the future to deal with a
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 18f0ced..45cec20 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -169,9 +169,6 @@
nsecs_t mTotalTime;
std::atomic<nsecs_t> mLastSwapTime;
- // Synchronization fence from a GL composition.
- sp<Fence> flushFence = Fence::NO_FENCE;
-
// Double- vs. triple-buffering stats
struct BufferingStats {
BufferingStats()
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index 3addd61..55a348e 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -482,7 +482,7 @@
EXPECT_CALL(*test->mRenderEngine, useNativeFenceSync()).WillRepeatedly(Return(true));
bool ignoredRecomputeVisibleRegions;
- layer->latchBuffer(ignoredRecomputeVisibleRegions, 0, Fence::NO_FENCE);
+ layer->latchBuffer(ignoredRecomputeVisibleRegions, 0);
Mock::VerifyAndClear(test->mRenderEngine);
}