Expose whether nsight is running to the app, disable some stuff under nsight

interface/src/Application.cpp

@@ -257,7 +257,10 @@ public:
     void run() override {
         while (!_quit) {
             QThread::sleep(HEARTBEAT_UPDATE_INTERVAL_SECS);
-
+            // Don't do heartbeat detection under nsight
+            if (nsightActive()) {
+                continue;
+            }
             uint64_t lastHeartbeat = _heartbeat; // sample atomic _heartbeat, because we could context switch away and have it updated on us
             uint64_t now = usecTimestampNow();
             auto lastHeartbeatAge = (now > lastHeartbeat) ? now - lastHeartbeat : 0;
@@ -305,8 +308,6 @@ public:
                 // Don't actually crash in debug builds, in case this apparent deadlock is simply from
                 // the developer actively debugging code
                 #ifdef NDEBUG
-
-
                     deadlockDetectionCrash();
                 #endif
             }

libraries/entities-renderer/src/EntityTreeRenderer.cpp

@@ -57,7 +57,10 @@ EntityTreeRenderer::EntityTreeRenderer(bool wantScripts, AbstractViewStateInterf
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Model, RenderableModelEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Light, RenderableLightEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Text, RenderableTextEntityItem::factory)
-    REGISTER_ENTITY_TYPE_WITH_FACTORY(Web, RenderableWebEntityItem::factory)
+    // Offscreen web surfaces are incompatible with nSight
+    if (!nsightActive()) {
+        REGISTER_ENTITY_TYPE_WITH_FACTORY(Web, RenderableWebEntityItem::factory)
+    }
     REGISTER_ENTITY_TYPE_WITH_FACTORY(ParticleEffect, RenderableParticleEffectEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Zone, RenderableZoneEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Line, RenderableLineEntityItem::factory)
@@ -159,7 +162,9 @@ void EntityTreeRenderer::init() {
 }
 
 void EntityTreeRenderer::shutdown() {
-    _entitiesScriptEngine->disconnectNonEssentialSignals(); // disconnect all slots/signals from the script engine, except essential
+    if (_entitiesScriptEngine) {
+        _entitiesScriptEngine->disconnectNonEssentialSignals(); // disconnect all slots/signals from the script engine, except essential
+    }
     _shuttingDown = true;
 
     clear(); // always clear() on shutdown

libraries/shared/src/shared/NsightHelpers.cpp

@@ -8,10 +8,19 @@
 
 #include "NsightHelpers.h"
 
-#ifdef _WIN32
-#if defined(NSIGHT_FOUND)
+
+#if defined(_WIN32) && defined(NSIGHT_FOUND)
+
+#include <QtCore/QProcessEnvironment>
 #include "nvToolsExt.h"
 
+static const QString NSIGHT_FLAG("NSIGHT_LAUNCHED");
+static const bool nsightLaunched = QProcessEnvironment::systemEnvironment().contains(NSIGHT_FLAG);
+
+bool nsightActive() {
+    return nsightLaunched;
+}
+
 ProfileRange::ProfileRange(const char *name) {
     _rangeId = nvtxRangeStart(name);
 }
@@ -35,8 +44,9 @@ ProfileRange::~ProfileRange() {
 }
 
 #else
-ProfileRange::ProfileRange(const char *name) {}
-ProfileRange::ProfileRange(const char *name, uint32_t argbColor, uint64_t payload) {}
-ProfileRange::~ProfileRange() {}
-#endif
+
+bool nsightActive() {
+    return false;
+}
+
 #endif // _WIN32

libraries/shared/src/shared/NsightHelpers.h

@@ -9,7 +9,9 @@
 #ifndef hifi_gl_NsightHelpers_h
 #define hifi_gl_NsightHelpers_h
 
-#ifdef _WIN32
+bool nsightActive();
+
+#if defined(_WIN32) && defined(NSIGHT_FOUND)
 #include <stdint.h>
 
 class ProfileRange {
@@ -18,9 +20,7 @@ public:
     ProfileRange(const char *name, uint32_t argbColor, uint64_t payload);
     ~ProfileRange();
 private:
-#if defined(NSIGHT_FOUND)
     uint64_t _rangeId{ 0 };
-#endif
 };
 
 #define PROFILE_RANGE(name) ProfileRange profileRangeThis(name);

tests/render-perf/src/main.cpp

@@ -277,7 +277,9 @@ public:
         auto duration = usecTimestampNow() - start;
         float frameTime = (float)duration / (float)USECS_PER_SECOND;
         float averageFrameTime = 1.0f / _fps;
-        if ((abs(frameTime - averageFrameTime) - 1.0f) > 2.0f) {
+        float diff = frameTime - averageFrameTime;
+        diff = std::max(diff, -diff);
+        if ((diff - 1.0f) > 2.0f) {
             qDebug() << "Long frame " << frameTime * MSECS_PER_SECOND;
         }
         return true;
@@ -402,9 +404,7 @@ public:
         AbstractViewStateInterface::setInstance(this);
         _octree = DependencyManager::set<EntityTreeRenderer>(false, this, nullptr);
         _octree->init();
-        // Prevent web entities from rendering
-        REGISTER_ENTITY_TYPE_WITH_FACTORY(Web, WebEntityItem::factory);
-
+        
         DependencyManager::set<ParentFinder>(_octree->getTree());
         getEntities()->setViewFrustum(_viewFrustum);
         auto nodeList = DependencyManager::get<LimitedNodeList>();