Merge pull request #7145 from howard-stearns/lod-pid-removal

Lod pid removal

interface/resources/qml/Stats.qml

@@ -267,15 +267,9 @@ Item {
                     Text {
                         color: root.fontColor;
                         font.pixelSize: root.fontSize
-                        visible: root.showAcuity
+                        visible: root.expanded
                         text: "LOD: " + root.lodStatus;
                     }
-                    Text {
-                        color: root.fontColor;
-                        font.pixelSize: root.fontSize
-                        visible: root.expanded && !root.showAcuity
-                        text: root.lodStatsRenderText;
-                    }
                 }
             }
         }

interface/src/Application.cpp

@@ -1635,13 +1635,7 @@ void Application::paintGL() {
         });
     }
 
-    // Some LOD-like controls need to know a smoothly varying "potential" frame rate that doesn't
-    // include time waiting for sync, and which can report a number above target if we've got the headroom.
-    // In my tests, the following is mostly less than 0.5ms, and never more than 3ms. I don't think its worth measuring during runtime.
-    const float paintWaitAndQTTimerAllowance = 0.001f; // seconds
-    // Store both values now for use by next cycle.
     _lastInstantaneousFps = instantaneousFps;
-    _lastUnsynchronizedFps = 1.0f / (((usecTimestampNow() - now) / (float)USECS_PER_SECOND) + paintWaitAndQTTimerAllowance);
     _pendingPaint = false;
 }
 
@@ -3083,11 +3077,7 @@ void Application::update(float deltaTime) {
     bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
     PerformanceWarning warn(showWarnings, "Application::update()");
 
-    if (DependencyManager::get<LODManager>()->getUseAcuity()) {
     updateLOD();
-    } else {
-        DependencyManager::get<LODManager>()->updatePIDRenderDistance(getTargetFrameRate(), getLastInstanteousFps(), deltaTime, isThrottleRendering());
-    }
 
     {
         PerformanceTimer perfTimer("devices");

interface/src/Application.h

@@ -157,7 +157,6 @@ public:
     float getFps() const { return _fps; }
     float getTargetFrameRate(); // frames/second
     float getLastInstanteousFps() const { return _lastInstantaneousFps; }
-    float getLastUnsynchronizedFps() const { return _lastUnsynchronizedFps; }
 
     float getFieldOfView() { return _fieldOfView.get(); }
     void setFieldOfView(float fov);
@@ -402,7 +401,6 @@ private:
     QElapsedTimer _timerStart;
     QElapsedTimer _lastTimeUpdated;
     float _lastInstantaneousFps { 0.0f };
-    float _lastUnsynchronizedFps { 0.0f };
 
     ShapeManager _shapeManager;
     PhysicalEntitySimulation _entitySimulation;

interface/src/LODManager.cpp

@@ -20,29 +20,8 @@
 
 Setting::Handle<float> desktopLODDecreaseFPS("desktopLODDecreaseFPS", DEFAULT_DESKTOP_LOD_DOWN_FPS);
 Setting::Handle<float> hmdLODDecreaseFPS("hmdLODDecreaseFPS", DEFAULT_HMD_LOD_DOWN_FPS);
-// There are two different systems in use, based on lodPreference:
-// pid: renderDistance is adjusted by a PID such that frame rate targets are met.
-// acuity:  a pseudo-acuity target is held, or adjusted to match minimum frame rates (and a PID controlls avatar rendering distance)
-// If unspecified, acuity is used only if user has specified non-default minumum frame rates.
-Setting::Handle<int> lodPreference("lodPreference", (int)LODManager::LODPreference::acuity);
-const float SMALLEST_REASONABLE_HORIZON = 50.0f; // meters
-Setting::Handle<float> renderDistanceInverseHighLimit("renderDistanceInverseHighLimit", 1.0f / SMALLEST_REASONABLE_HORIZON);
-void LODManager::setRenderDistanceInverseHighLimit(float newValue) {
-    renderDistanceInverseHighLimit.set(newValue); // persist it, and tell all the controllers that use it
-    _renderDistanceController.setControlledValueHighLimit(newValue);
-}
 
 LODManager::LODManager() {
-
-    setRenderDistanceInverseHighLimit(renderDistanceInverseHighLimit.get());
-    setRenderDistanceInverseLowLimit(1.0f / (float)TREE_SCALE);
-    // Advice for tuning parameters:
-    // See PIDController.h. There's a section on tuning in the reference.
-    // Turn on logging with the following (or from js with LODManager.setRenderDistanceControllerHistory("render pid", 240))
-    //setRenderDistanceControllerHistory("render pid", 60 * 4);
-    // Note that extra logging/hysteresis is turned off in Avatar.cpp when the above logging is on.
-    setRenderDistanceKP(0.000012f); // Usually about 0.6 of largest that doesn't oscillate when other parameters 0.
-    setRenderDistanceKI(0.00002f); // Big enough to bring us to target with the above KP.
 }
 
 float LODManager::getLODDecreaseFPS() {
@@ -234,53 +213,7 @@ QString LODManager::getLODFeedbackText() {
     return result;
 }
 
-static float renderDistance = (float)TREE_SCALE;
-static int renderedCount = 0;
-static int lastRenderedCount = 0;
-bool LODManager::getUseAcuity() { return lodPreference.get() == (int)LODManager::LODPreference::acuity; }
-void LODManager::setUseAcuity(bool newValue) { lodPreference.set(newValue ? (int)LODManager::LODPreference::acuity : (int)LODManager::LODPreference::pid); }
-float LODManager::getRenderDistance() {
-    return renderDistance;
-}
-int LODManager::getRenderedCount() {
-    return lastRenderedCount;
-}
-QString LODManager::getLODStatsRenderText() {
-    const QString label = "Rendered objects: ";
-    return label + QString::number(getRenderedCount()) + " w/in " + QString::number((int)getRenderDistance()) + "m";
-}
-// compare autoAdjustLOD()
-void LODManager::updatePIDRenderDistance(float targetFps, float measuredFps, float deltaTime, bool isThrottled) {
-    float distance;
-    if (!isThrottled) {
-        _renderDistanceController.setMeasuredValueSetpoint(targetFps); // No problem updating in flight.
-        // The PID controller raises the controlled value when the measured value goes up.
-        // The measured value is frame rate. When the controlled value (1 / render cutoff distance)
-        // goes up, the render cutoff distance gets closer, the number of rendered avatars is less, and frame rate
-        // goes up.
-        distance = 1.0f / _renderDistanceController.update(measuredFps, deltaTime);
-    } else {
-        // Here we choose to just use the maximum render cutoff distance if throttled.
-        distance = 1.0f / _renderDistanceController.getControlledValueLowLimit();
-    }
-    _renderDistanceAverage.updateAverage(distance);
-    renderDistance = _renderDistanceAverage.getAverage(); // average only once per cycle
-    lastRenderedCount = renderedCount;
-    renderedCount = 0;
-}
-
 bool LODManager::shouldRender(const RenderArgs* args, const AABox& bounds) {
-    // NOTE: this branch of code is the alternate form of LOD that uses PID controllers.
-    if (!getUseAcuity()) {
-        float distanceToCamera = glm::length(bounds.calcCenter() - args->_viewFrustum->getPosition());
-        float largestDimension = bounds.getLargestDimension();
-        const float scenerySize = 300; // meters
-        bool isRendered = (largestDimension > scenerySize) || // render scenery regardless of distance
-            (distanceToCamera < renderDistance + largestDimension);
-        renderedCount += isRendered ? 1 : 0;
-        return isRendered;
-    }
-    
     // FIXME - eventually we want to use the render accuracy as an indicator for the level of detail
     // to use in rendering.
     float renderAccuracy = args->_viewFrustum->calculateRenderAccuracy(bounds, args->_sizeScale, args->_boundaryLevelAdjust);
@@ -299,12 +232,6 @@ void LODManager::setBoundaryLevelAdjust(int boundaryLevelAdjust) {
 void LODManager::loadSettings() {
     setDesktopLODDecreaseFPS(desktopLODDecreaseFPS.get());
     setHMDLODDecreaseFPS(hmdLODDecreaseFPS.get());
-
-    if (lodPreference.get() == (int)LODManager::LODPreference::unspecified) {
-        setUseAcuity((getDesktopLODDecreaseFPS() != DEFAULT_DESKTOP_LOD_DOWN_FPS) || (getHMDLODDecreaseFPS() != DEFAULT_HMD_LOD_DOWN_FPS));
-    }
-    Menu::getInstance()->getActionForOption(MenuOption::LodTools)->setEnabled(getUseAcuity());
-    Menu::getInstance()->getSubMenuFromName(MenuOption::RenderResolution, Menu::getInstance()->getSubMenuFromName("Render", Menu::getInstance()->getMenu("Developer")))->setEnabled(getUseAcuity());
 }
 
 void LODManager::saveSettings() {

interface/src/LODManager.h

@@ -18,8 +18,8 @@
 #include <PIDController.h>
 #include <SimpleMovingAverage.h>
 
-const float DEFAULT_DESKTOP_LOD_DOWN_FPS = 15.0;
+const float DEFAULT_DESKTOP_LOD_DOWN_FPS = 30.0;
-const float DEFAULT_HMD_LOD_DOWN_FPS = 30.0;
+const float DEFAULT_HMD_LOD_DOWN_FPS = 45.0;
 const float MAX_LIKELY_DESKTOP_FPS = 59.0; // this is essentially, V-synch - 1 fps
 const float MAX_LIKELY_HMD_FPS = 74.0; // this is essentially, V-synch - 1 fps
 const float INCREASE_LOD_GAP = 15.0f;
@@ -76,27 +76,6 @@ public:
     Q_INVOKABLE float getLODDecreaseFPS();
     Q_INVOKABLE float getLODIncreaseFPS();
     
-    enum class LODPreference {
-        pid = 0,
-        acuity,
-        unspecified
-    };
-    static bool getUseAcuity();
-    static void setUseAcuity(bool newValue);
-    Q_INVOKABLE void setRenderDistanceKP(float newValue) { _renderDistanceController.setKP(newValue); }
-    Q_INVOKABLE void setRenderDistanceKI(float newValue) { _renderDistanceController.setKI(newValue); }
-    Q_INVOKABLE void setRenderDistanceKD(float newValue) { _renderDistanceController.setKD(newValue); }
-    Q_INVOKABLE bool getRenderDistanceControllerIsLogging() { return _renderDistanceController.getIsLogging(); }
-    Q_INVOKABLE void setRenderDistanceControllerHistory(QString label, int size) { return _renderDistanceController.setHistorySize(label, size); }
-    Q_INVOKABLE float getRenderDistanceInverseLowLimit() { return _renderDistanceController.getControlledValueLowLimit(); }
-    Q_INVOKABLE void setRenderDistanceInverseLowLimit(float newValue) { _renderDistanceController.setControlledValueLowLimit(newValue); }
-    Q_INVOKABLE float getRenderDistanceInverseHighLimit() { return _renderDistanceController.getControlledValueHighLimit(); }
-    Q_INVOKABLE void setRenderDistanceInverseHighLimit(float newValue);
-    void updatePIDRenderDistance(float targetFps, float measuredFps, float deltaTime, bool isThrottled);
-    float getRenderDistance();
-    int getRenderedCount();
-    QString getLODStatsRenderText();
-
     static bool shouldRender(const RenderArgs* args, const AABox& bounds);
     void autoAdjustLOD(float currentFPS);
     
@@ -126,9 +105,6 @@ private:
     SimpleMovingAverage _fpsAverageStartWindow = START_DELAY_SAMPLES_OF_FRAMES;
     SimpleMovingAverage _fpsAverageDownWindow = DOWN_SHIFT_SAMPLES_OF_FRAMES;
     SimpleMovingAverage _fpsAverageUpWindow = UP_SHIFT_SAMPLES_OF_FRAMES;
-    
-    PIDController _renderDistanceController{};
-    SimpleMovingAverage _renderDistanceAverage{ 10 };
 };
 
 #endif // hifi_LODManager_h

interface/src/ui/PreferencesDialog.cpp

@@ -87,13 +87,6 @@ void setupPreferences() {
     }
     
     static const QString LOD_TUNING("Level of Detail Tuning");
-    CheckPreference* acuityToggle;
-    {
-        auto getter = []()->bool { return DependencyManager::get<LODManager>()->getUseAcuity(); };
-        auto setter = [](bool value) { DependencyManager::get<LODManager>()->setUseAcuity(value); };
-        preferences->addPreference(acuityToggle = new CheckPreference(LOD_TUNING, "Render based on visual acuity", getter, setter));
-    }
-
     {
         auto getter = []()->float { return DependencyManager::get<LODManager>()->getDesktopLODDecreaseFPS(); };
         auto setter = [](float value) { DependencyManager::get<LODManager>()->setDesktopLODDecreaseFPS(value); };
@@ -101,7 +94,6 @@ void setupPreferences() {
         preference->setMin(0);
         preference->setMax(120);
         preference->setStep(1);
-        preference->setEnabler(acuityToggle);
         preferences->addPreference(preference);
     }
 
@@ -112,18 +104,6 @@ void setupPreferences() {
         preference->setMin(0);
         preference->setMax(120);
         preference->setStep(1);
-        preference->setEnabler(acuityToggle);
-        preferences->addPreference(preference);
-    }
-
-    {
-        auto getter = []()->float { return 1.0f / DependencyManager::get<LODManager>()->getRenderDistanceInverseHighLimit(); };
-        auto setter = [](float value) { DependencyManager::get<LODManager>()->setRenderDistanceInverseHighLimit(1.0f / value); };
-        auto preference = new SpinnerPreference(LOD_TUNING, "Minimum Display Distance", getter, setter);
-        preference->setMin(5);
-        preference->setMax(32768);
-        preference->setStep(1);
-        preference->setEnabler(acuityToggle, true);
         preferences->addPreference(preference);
     }
 

interface/src/ui/Stats.cpp

@@ -283,9 +283,7 @@ void Stats::updateStats(bool force) {
         STAT_UPDATE(localLeaves, (int)OctreeElement::getLeafNodeCount());
         // LOD Details
         STAT_UPDATE(lodStatus, "You can see " + DependencyManager::get<LODManager>()->getLODFeedbackText());
-        STAT_UPDATE(lodStatsRenderText, DependencyManager::get<LODManager>()->getLODStatsRenderText());
     }
-    STAT_UPDATE(showAcuity, (_expanded || force) && DependencyManager::get<LODManager>()->getUseAcuity());
 
     bool performanceTimerIsActive = PerformanceTimer::isActive();
     bool displayPerf = _expanded && Menu::getInstance()->isOptionChecked(MenuOption::DisplayDebugTimingDetails);

interface/src/ui/Stats.h

@@ -30,7 +30,6 @@ class Stats : public QQuickItem {
     Q_PROPERTY(QString monospaceFont READ monospaceFont CONSTANT)
     Q_PROPERTY(float audioPacketlossUpstream READ getAudioPacketLossUpstream)
     Q_PROPERTY(float audioPacketlossDownstream READ getAudioPacketLossDownstream)
-    Q_PROPERTY(bool showAcuity READ getShowAcuity WRITE setShowAcuity NOTIFY showAcuityChanged)
 
     STATS_PROPERTY(int, serverCount, 0)
     STATS_PROPERTY(int, renderrate, 0)
@@ -80,7 +79,6 @@ class Stats : public QQuickItem {
     STATS_PROPERTY(QString, packetStats, QString())
     STATS_PROPERTY(QString, lodStatus, QString())
     STATS_PROPERTY(QString, timingStats, QString())
-    STATS_PROPERTY(QString, lodStatsRenderText, QString())
     STATS_PROPERTY(int, serverElements, 0)
     STATS_PROPERTY(int, serverInternal, 0)
     STATS_PROPERTY(int, serverLeaves, 0)
@@ -112,15 +110,12 @@ public:
             emit expandedChanged();
         }
     }
-    bool getShowAcuity() { return _showAcuity; }
-    void setShowAcuity(bool newValue) { _showAcuity = newValue; }
 
 public slots:
     void forceUpdateStats() { updateStats(true); }
 
 signals:
     void expandedChanged();
-    void showAcuityChanged();
     void timingExpandedChanged();
     void serverCountChanged();
     void renderrateChanged();
@@ -128,7 +123,6 @@ signals:
     void simrateChanged();
     void avatarSimrateChanged();
     void avatarCountChanged();
-    void lodStatsRenderTextChanged();
     void packetInCountChanged();
     void packetOutCountChanged();
     void mbpsInChanged();
@@ -182,7 +176,6 @@ private:
     int _recentMaxPackets{ 0 } ; // recent max incoming voxel packets to process
     bool _resetRecentMaxPacketsSoon{ true };
     bool _expanded{ false };
-    bool _showAcuity{ false };
     bool _timingExpanded{ false };
     QString _monospaceFont;
     const AudioIOStats* _audioStats;