DO_NOT_MERGE Fix primaryRangeIsSingleRate + touch on dVRR

Disable a primaryRangeIsSingleRate section on dVRR and allow late touch
boost to trigger when no layer score. On dVRR display, the primary
physical range may be a single rate,
but late touch boost should still be able to trigger.

Bug: 353142444
Bug: 362379874
Flag: EXEMPT_bugfix
Test: atest libsurfaceflinger_unittest
Test: Twitter scrolling with and without video, with policy backdoor
Test: notification shade scrolling with policy backdoor
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:7bedfbf0d7b106702a241a64a79c36205606496c)
Merged-In: Ic5b2b298fe0df357f77ef8f06b1fc0fc248e0498
Change-Id: Ic5b2b298fe0df357f77ef8f06b1fc0fc248e0498

2 files changed, 43 insertions, 5 deletions

diff --git a/services/surfaceflinger/Scheduler/RefreshRateSelector.cpp b/services/surfaceflinger/Scheduler/RefreshRateSelector.cpp
index dd86e4f426..bbb3c52c9f 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateSelector.cpp
+++ b/services/surfaceflinger/Scheduler/RefreshRateSelector.cpp
@@ -841,7 +841,8 @@ auto RefreshRateSelector::getRankedFrameRatesLocked(const std::vector<LayerRequi
         return score.overallScore == 0;
     });
 
-    if (policy->primaryRangeIsSingleRate()) {
+    // TODO(b/364651864): Evaluate correctness of primaryRangeIsSingleRate.
+    if (!mIsVrrDevice.load() && policy->primaryRangeIsSingleRate()) {
         // If we never scored any layers, then choose the rate from the primary
         // range instead of picking a random score from the app range.
         if (noLayerScore) {
@@ -887,8 +888,8 @@ auto RefreshRateSelector::getRankedFrameRatesLocked(const std::vector<LayerRequi
         const auto touchRefreshRates = rankFrameRates(anchorGroup, RefreshRateOrder::Descending);
         using fps_approx_ops::operator<;
 
-        if (scores.front().frameRateMode.fps < touchRefreshRates.front().frameRateMode.fps) {
-            ALOGV("Touch Boost");
+        if (scores.front().frameRateMode.fps <= touchRefreshRates.front().frameRateMode.fps) {
+            ALOGV("Touch Boost [late]");
             ATRACE_FORMAT_INSTANT("%s (Touch Boost [late])",
                                   to_string(touchRefreshRates.front().frameRateMode.fps).c_str());
             return {touchRefreshRates, GlobalSignals{.touch = true}};
diff --git a/services/surfaceflinger/tests/unittests/RefreshRateSelectorTest.cpp b/services/surfaceflinger/tests/unittests/RefreshRateSelectorTest.cpp
index cf9a7d3e69..4ffd52b607 100644
--- a/services/surfaceflinger/tests/unittests/RefreshRateSelectorTest.cpp
+++ b/services/surfaceflinger/tests/unittests/RefreshRateSelectorTest.cpp
@@ -1766,6 +1766,43 @@ TEST_P(RefreshRateSelectorTest, getBestFrameRateMode_withFrameRateCategory_60_12
     }
 }
 
+TEST_P(RefreshRateSelectorTest, getBestFrameRateMode_vrrHighHintTouch_primaryRangeIsSingleRate) {
+    if (GetParam() != Config::FrameRateOverride::Enabled) {
+        return;
+    }
+
+    SET_FLAG_FOR_TEST(flags::vrr_config, true);
+
+    auto selector = createSelector(kVrrMode_120, kModeId120);
+    selector.setActiveMode(kModeId120, 60_Hz);
+
+    // Change primary physical range to be single rate, which on VRR device should not affect
+    // fps scoring.
+    EXPECT_EQ(SetPolicyResult::Changed,
+              selector.setDisplayManagerPolicy({kModeId120, {120_Hz, 120_Hz}}));
+
+    std::vector<LayerRequirement> layers = {{.weight = 1.f}, {.weight = 1.f}};
+    layers[0].vote = LayerVoteType::ExplicitCategory;
+    layers[0].frameRateCategory = FrameRateCategory::HighHint;
+    layers[0].name = "ExplicitCategory HighHint";
+
+    auto actualRankedFrameRates = selector.getRankedFrameRates(layers);
+    // Expect late touch boost from HighHint.
+    EXPECT_EQ(120_Hz, actualRankedFrameRates.ranking.front().frameRateMode.fps);
+    EXPECT_EQ(kModeId120, actualRankedFrameRates.ranking.front().frameRateMode.modePtr->getId());
+    EXPECT_TRUE(actualRankedFrameRates.consideredSignals.touch);
+
+    layers[1].vote = LayerVoteType::ExplicitExactOrMultiple;
+    layers[1].desiredRefreshRate = 30_Hz;
+    layers[1].name = "ExplicitExactOrMultiple 30Hz";
+
+    actualRankedFrameRates = selector.getRankedFrameRates(layers);
+    // Expect late touch boost from HighHint.
+    EXPECT_EQ(120_Hz, actualRankedFrameRates.ranking.front().frameRateMode.fps);
+    EXPECT_EQ(kModeId120, actualRankedFrameRates.ranking.front().frameRateMode.modePtr->getId());
+    EXPECT_TRUE(actualRankedFrameRates.consideredSignals.touch);
+}
+
 TEST_P(RefreshRateSelectorTest, getBestFrameRateMode_withFrameRateCategory_HighHint) {
     auto selector = createSelector(makeModes(kMode24, kMode30, kMode60, kMode120), kModeId60);
 
@@ -1884,7 +1921,7 @@ TEST_P(RefreshRateSelectorTest, getBestFrameRateMode_withFrameRateCategory_HighH
     // Gets touch boost
     EXPECT_EQ(120_Hz, actualRankedFrameRates.ranking.front().frameRateMode.fps);
     EXPECT_EQ(kModeId120, actualRankedFrameRates.ranking.front().frameRateMode.modePtr->getId());
-    EXPECT_FALSE(actualRankedFrameRates.consideredSignals.touch);
+    EXPECT_TRUE(actualRankedFrameRates.consideredSignals.touch);
 }
 
 TEST_P(RefreshRateSelectorTest, getBestFrameRateMode_withFrameRateCategory_TouchBoost) {
@@ -1978,7 +2015,7 @@ TEST_P(RefreshRateSelectorTest, getBestFrameRateMode_withFrameRateCategory_Touch
     lr2.name = "Max";
     actualRankedFrameRates = selector.getRankedFrameRates(layers, {.touch = true});
     EXPECT_FRAME_RATE_MODE(kMode120, 120_Hz, actualRankedFrameRates.ranking.front().frameRateMode);
-    EXPECT_FALSE(actualRankedFrameRates.consideredSignals.touch);
+    EXPECT_TRUE(actualRankedFrameRates.consideredSignals.touch);
 
     lr1.vote = LayerVoteType::ExplicitCategory;
     lr1.frameRateCategory = FrameRateCategory::Normal;