SF: Reset VsyncModulator on active display change
Between VsyncModulator::onRefreshRateChange{Initiated,Completed}, if the
active display changes, the newly active display's VsyncConfiguration is
propagated to VsyncModulator via updatePhaseConfiguration, which selects
VsyncConfigType::Early due to the `mRefreshRateChangePending` of the now
inactive display.
Clear `mRefreshRateChangePending` and let `onRefreshRateChangeInitiated`
set it for the newly active display if needed.
In practice, the end result is the same due to the forced modeset for an
active display that was just powered on. However, this will no longer be
true with concurrent displays when the new pacesetter is already powered
on.
Bug: 255635821
Test: DisplayModeSwitchingTest.multiDisplay
Change-Id: If264742a107cf5839d2c820eab23712778c1ae2e
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 3e93ef4..cca8f36 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -165,7 +165,7 @@
void setDuration(ConnectionHandle, std::chrono::nanoseconds workDuration,
std::chrono::nanoseconds readyDuration);
- const VsyncModulator& vsyncModulator() const { return *mVsyncModulator; }
+ VsyncModulator& vsyncModulator() { return *mVsyncModulator; }
// In some cases, we should only modulate for the pacesetter display. In those
// cases, the caller should pass in the relevant display, and the method
diff --git a/services/surfaceflinger/Scheduler/VsyncModulator.cpp b/services/surfaceflinger/Scheduler/VsyncModulator.cpp
index c9af4c2..586357f 100644
--- a/services/surfaceflinger/Scheduler/VsyncModulator.cpp
+++ b/services/surfaceflinger/Scheduler/VsyncModulator.cpp
@@ -187,9 +187,9 @@
static_cast<void>(updateVsyncConfigLocked());
}
-bool VsyncModulator::isVsyncConfigDefault() const {
+bool VsyncModulator::isVsyncConfigEarly() const {
std::lock_guard<std::mutex> lock(mMutex);
- return getNextVsyncConfigType() == VsyncConfigType::Late;
+ return getNextVsyncConfigType() != VsyncConfigType::Late;
}
} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/VsyncModulator.h b/services/surfaceflinger/Scheduler/VsyncModulator.h
index dc4dafd..be0d334 100644
--- a/services/surfaceflinger/Scheduler/VsyncModulator.h
+++ b/services/surfaceflinger/Scheduler/VsyncModulator.h
@@ -53,8 +53,12 @@
explicit VsyncModulator(const VsyncConfigSet&, Now = Clock::now);
+ bool isVsyncConfigEarly() const EXCLUDES(mMutex);
+
VsyncConfig getVsyncConfig() const EXCLUDES(mMutex);
+ void cancelRefreshRateChange() { mRefreshRateChangePending = false; }
+
[[nodiscard]] VsyncConfig setVsyncConfigSet(const VsyncConfigSet&) EXCLUDES(mMutex);
// Changes offsets in response to transaction flags or commit.
@@ -72,8 +76,6 @@
[[nodiscard]] VsyncConfigOpt onDisplayRefresh(bool usedGpuComposition);
- [[nodiscard]] bool isVsyncConfigDefault() const;
-
protected:
// Called from unit tests as well
void binderDied(const wp<IBinder>&) override EXCLUDES(mMutex);
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index cfcb4ed..54889fa 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3452,7 +3452,7 @@
// TODO(b/175678251) Call a listener instead.
if (currentState.physical->hwcDisplayId == getHwComposer().getPrimaryHwcDisplayId()) {
- updateActiveDisplayVsyncLocked(*display);
+ resetPhaseConfiguration(display->getActiveMode().fps);
}
}
return;
@@ -3486,9 +3486,11 @@
}
}
-void SurfaceFlinger::updateActiveDisplayVsyncLocked(const DisplayDevice& activeDisplay) {
+void SurfaceFlinger::resetPhaseConfiguration(Fps refreshRate) {
+ // Cancel the pending refresh rate change, if any, before updating the phase configuration.
+ mScheduler->vsyncModulator().cancelRefreshRateChange();
+
mVsyncConfiguration->reset();
- const Fps refreshRate = activeDisplay.getActiveMode().fps;
updatePhaseConfiguration(refreshRate);
mRefreshRateStats->setRefreshRate(refreshRate);
}
@@ -4303,9 +4305,8 @@
// We don't want to latch unsignaled if are in early / client composition
// as it leads to jank due to RenderEngine waiting for unsignaled buffer
// or window animations being slow.
- const auto isDefaultVsyncConfig = mScheduler->vsyncModulator().isVsyncConfigDefault();
- if (!isDefaultVsyncConfig) {
- ALOGV("%s: false (LatchUnsignaledConfig::AutoSingleLayer; !isDefaultVsyncConfig)",
+ if (mScheduler->vsyncModulator().isVsyncConfigEarly()) {
+ ALOGV("%s: false (LatchUnsignaledConfig::AutoSingleLayer; isVsyncConfigEarly)",
__func__);
return false;
}
@@ -7692,7 +7693,8 @@
mActiveDisplayId = activeDisplay.getPhysicalId();
activeDisplay.getCompositionDisplay()->setLayerCachingTexturePoolEnabled(true);
- updateActiveDisplayVsyncLocked(activeDisplay);
+ resetPhaseConfiguration(activeDisplay.getActiveMode().fps);
+
mScheduler->setModeChangePending(false);
mScheduler->setPacesetterDisplay(mActiveDisplayId);
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index b353a48..0d297b9 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -736,6 +736,8 @@
void updateCursorAsync();
void initScheduler(const sp<const DisplayDevice>&) REQUIRES(kMainThreadContext, mStateLock);
+
+ void resetPhaseConfiguration(Fps) REQUIRES(mStateLock, kMainThreadContext);
void updatePhaseConfiguration(Fps) REQUIRES(mStateLock);
/*
@@ -1120,9 +1122,6 @@
std::chrono::nanoseconds presentLatency);
int getMaxAcquiredBufferCountForRefreshRate(Fps refreshRate) const;
- void updateActiveDisplayVsyncLocked(const DisplayDevice& activeDisplay)
- REQUIRES(mStateLock, kMainThreadContext);
-
bool isHdrLayer(const frontend::LayerSnapshot& snapshot) const;
ui::Rotation getPhysicalDisplayOrientation(DisplayId, bool isPrimary) const
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp
index b4a146e..e176546 100644
--- a/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_DisplayModeSwitching.cpp
@@ -284,9 +284,43 @@
ASSERT_EQ(mDisplay->getActiveMode().modePtr->getId(), kModeId90_4K);
}
-TEST_F(DisplayModeSwitchingTest, multiDisplay) {
+MATCHER_P2(ModeSwitchingTo, flinger, modeId, "") {
+ if (!arg->getDesiredActiveMode()) {
+ *result_listener << "No desired active mode";
+ return false;
+ }
+
+ if (arg->getDesiredActiveMode()->modeOpt->modePtr->getId() != modeId) {
+ *result_listener << "Unexpected desired active mode " << modeId;
+ return false;
+ }
+
+ if (!flinger->scheduler()->vsyncModulator().isVsyncConfigEarly()) {
+ *result_listener << "VsyncModulator did not shift to early phase";
+ return false;
+ }
+
+ return true;
+}
+
+MATCHER_P(ModeSettledTo, modeId, "") {
+ if (const auto desiredOpt = arg->getDesiredActiveMode()) {
+ *result_listener << "Unsettled desired active mode "
+ << desiredOpt->modeOpt->modePtr->getId();
+ return false;
+ }
+
ftl::FakeGuard guard(kMainThreadContext);
+ if (arg->getActiveMode().modePtr->getId() != modeId) {
+ *result_listener << "Settled to unexpected active mode " << modeId;
+ return false;
+ }
+
+ return true;
+}
+
+TEST_F(DisplayModeSwitchingTest, multiDisplay) {
constexpr HWDisplayId kInnerDisplayHwcId = PrimaryDisplayVariant::HWC_DISPLAY_ID;
constexpr HWDisplayId kOuterDisplayHwcId = kInnerDisplayHwcId + 1;
@@ -309,17 +343,13 @@
const auto& innerDisplay = mDisplay;
- EXPECT_FALSE(innerDisplay->getDesiredActiveMode());
- EXPECT_FALSE(outerDisplay->getDesiredActiveMode());
-
- EXPECT_EQ(innerDisplay->getActiveMode().modePtr->getId(), kModeId60);
- EXPECT_EQ(outerDisplay->getActiveMode().modePtr->getId(), kModeId120);
+ EXPECT_THAT(innerDisplay, ModeSettledTo(kModeId60));
+ EXPECT_THAT(outerDisplay, ModeSettledTo(kModeId120));
mFlinger.onActiveDisplayChanged(nullptr, *innerDisplay);
- // No transition on either display.
- EXPECT_FALSE(innerDisplay->getDesiredActiveMode());
- EXPECT_FALSE(outerDisplay->getDesiredActiveMode());
+ EXPECT_THAT(innerDisplay, ModeSettledTo(kModeId60));
+ EXPECT_THAT(outerDisplay, ModeSettledTo(kModeId120));
EXPECT_EQ(NO_ERROR,
mFlinger.setDesiredDisplayModeSpecs(innerDisplay->getDisplayToken().promote(),
@@ -331,12 +361,8 @@
mock::createDisplayModeSpecs(kModeId60.value(),
false, 0.f, 120.f)));
- // Transition on the inner display.
- ASSERT_TRUE(innerDisplay->getDesiredActiveMode());
- EXPECT_EQ(innerDisplay->getDesiredActiveMode()->modeOpt->modePtr->getId(), kModeId90);
-
- // No transition on the outer display.
- EXPECT_FALSE(outerDisplay->getDesiredActiveMode());
+ EXPECT_THAT(innerDisplay, ModeSwitchingTo(&mFlinger, kModeId90));
+ EXPECT_THAT(outerDisplay, ModeSettledTo(kModeId120));
const VsyncPeriodChangeTimeline timeline{.refreshRequired = true};
EXPECT_CALL(*mComposer,
@@ -346,31 +372,18 @@
mFlinger.commit();
- // Transition on the inner display.
- ASSERT_TRUE(innerDisplay->getDesiredActiveMode());
- EXPECT_EQ(innerDisplay->getDesiredActiveMode()->modeOpt->modePtr->getId(), kModeId90);
-
- // No transition on the outer display.
- EXPECT_FALSE(outerDisplay->getDesiredActiveMode());
+ EXPECT_THAT(innerDisplay, ModeSwitchingTo(&mFlinger, kModeId90));
+ EXPECT_THAT(outerDisplay, ModeSettledTo(kModeId120));
mFlinger.commit();
- // Transition on the inner display.
- EXPECT_FALSE(innerDisplay->getDesiredActiveMode());
- EXPECT_EQ(innerDisplay->getActiveMode().modePtr->getId(), kModeId90);
-
- // No transition on the outer display.
- EXPECT_FALSE(outerDisplay->getDesiredActiveMode());
- EXPECT_EQ(outerDisplay->getActiveMode().modePtr->getId(), kModeId120);
+ EXPECT_THAT(innerDisplay, ModeSettledTo(kModeId90));
+ EXPECT_THAT(outerDisplay, ModeSettledTo(kModeId120));
mFlinger.onActiveDisplayChanged(innerDisplay.get(), *outerDisplay);
- // No transition on the inner display.
- EXPECT_FALSE(innerDisplay->getDesiredActiveMode());
-
- // Transition on the outer display.
- ASSERT_TRUE(outerDisplay->getDesiredActiveMode());
- EXPECT_EQ(outerDisplay->getDesiredActiveMode()->modeOpt->modePtr->getId(), kModeId60);
+ EXPECT_THAT(innerDisplay, ModeSettledTo(kModeId90));
+ EXPECT_THAT(outerDisplay, ModeSwitchingTo(&mFlinger, kModeId60));
EXPECT_CALL(*mComposer,
setActiveConfigWithConstraints(kOuterDisplayHwcId,
@@ -379,22 +392,13 @@
mFlinger.commit();
- // No transition on the inner display.
- EXPECT_FALSE(innerDisplay->getDesiredActiveMode());
-
- // Transition on the outer display.
- ASSERT_TRUE(outerDisplay->getDesiredActiveMode());
- EXPECT_EQ(outerDisplay->getDesiredActiveMode()->modeOpt->modePtr->getId(), kModeId60);
+ EXPECT_THAT(innerDisplay, ModeSettledTo(kModeId90));
+ EXPECT_THAT(outerDisplay, ModeSwitchingTo(&mFlinger, kModeId60));
mFlinger.commit();
- // No transition on the inner display.
- EXPECT_FALSE(innerDisplay->getDesiredActiveMode());
- EXPECT_EQ(innerDisplay->getActiveMode().modePtr->getId(), kModeId90);
-
- // Transition on the outer display.
- EXPECT_FALSE(outerDisplay->getDesiredActiveMode());
- EXPECT_EQ(outerDisplay->getActiveMode().modePtr->getId(), kModeId60);
+ EXPECT_THAT(innerDisplay, ModeSettledTo(kModeId90));
+ EXPECT_THAT(outerDisplay, ModeSettledTo(kModeId60));
}
} // namespace
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index d4b4434..f1a5fc4 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -102,7 +102,6 @@
}
auto& mutableAppConnectionHandle() { return mAppConnectionHandle; }
- auto& mutableVsyncModulator() { return *mVsyncModulator; }
auto& mutableLayerHistory() { return mLayerHistory; }
size_t layerHistorySize() NO_THREAD_SAFETY_ANALYSIS {
diff --git a/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp b/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
index c78148f..d4e2357 100644
--- a/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
+++ b/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
@@ -199,7 +199,7 @@
void modulateVsync() {
static_cast<void>(
- mFlinger.mutableScheduler().mutableVsyncModulator().onRefreshRateChangeInitiated());
+ mFlinger.mutableScheduler().vsyncModulator().onRefreshRateChangeInitiated());
}
bool mHasListenerCallbacks = false;