Add fps adaptive LOD for 60hz

Author: MrS-ibra

GeneralsMD/Code/GameEngine/Include/Common/GameLOD.h

@@ -188,6 +188,9 @@ class GameLODManager
 	Bool didMemPass( void );
 	void setReallyLowMHz(Int mhz) { m_reallyLowMHz = mhz; }
 	Bool isReallyLowMHz() const { return m_cpuFreq < m_reallyLowMHz; }
+#if defined(GENERALS_ONLINE_HIGH_FPS_SERVER)
+	void updateGraphicsQualityState(float averageFPS);
+#endif
 
 	StaticGameLODInfo m_staticGameLODInfo[STATIC_GAME_LOD_COUNT];
 	DynamicGameLODInfo m_dynamicGameLODInfo[DYNAMIC_GAME_LOD_COUNT];
@@ -226,6 +229,15 @@ class GameLODManager
 	Real m_memBenchIndex;
 	Real m_compositeBenchIndex;
 	Int m_reallyLowMHz;
+#if defined(GENERALS_ONLINE_HIGH_FPS_SERVER)
+	bool m_userGraphSnapshotTaken;
+	bool m_userShadowVolumesEnabled;
+	bool m_userShadowDecalsEnabled;
+	bool m_userHeatEffectsEnabled;
+	bool m_isQualityReduced;
+	int  m_sustainedGoodFrames;
+	DynamicGameLODLevel m_userDynamicLOD;
+#endif
 };
 
 Bool GameLODManager::isParticleSkipped(void)

GeneralsMD/Code/GameEngine/Source/Common/GameLOD.cpp

@@ -230,6 +230,15 @@ GameLODManager::GameLODManager(void)
 	m_compositeBenchIndex=0;
 	m_numBenchProfiles=0;
 	m_reallyLowMHz = 400;
+#if defined(GENERALS_ONLINE_HIGH_FPS_SERVER)
+	m_userGraphSnapshotTaken = false;
+	m_userShadowVolumesEnabled = true;
+	m_userShadowDecalsEnabled = true;
+	m_userHeatEffectsEnabled = true;
+	m_isQualityReduced = false;
+	m_sustainedGoodFrames = 0;
+	m_userDynamicLOD = DYNAMIC_GAME_LOD_VERY_HIGH;
+#endif
 
 	for (Int i=0; i<STATIC_GAME_LOD_CUSTOM; i++)
 		m_numLevelPresets[i]=0;
@@ -394,6 +403,10 @@ void GameLODManager::init(void)
 	}
 
 	setStaticLODLevel(userSetDetail);
+#if defined(GENERALS_ONLINE_HIGH_FPS_SERVER)
+	m_dynamicGameLODInfo[DYNAMIC_GAME_LOD_LOW].m_minFPS = 56;
+	m_dynamicGameLODInfo[DYNAMIC_GAME_LOD_LOW].m_minDynamicParticlePriority = ALWAYS_RENDER;
+#endif
 }
 
 void GameLODManager::refreshCustomStaticLODLevel(void)
@@ -767,3 +780,70 @@ Bool GameLODManager::didMemPass( void )
 {
 	return m_memPassed;
 }
+
+#if defined(GENERALS_ONLINE_HIGH_FPS_SERVER)
+void GameLODManager::updateGraphicsQualityState(float averageFPS)
+{
+	if (!m_userGraphSnapshotTaken)
+	{
+		m_userShadowVolumesEnabled = TheGlobalData->m_useShadowVolumes;
+		m_userShadowDecalsEnabled = TheGlobalData->m_useShadowDecals;
+		m_userHeatEffectsEnabled = TheGlobalData->m_useHeatEffects;
+		m_userDynamicLOD = m_currentDynamicLOD;
+		m_userGraphSnapshotTaken = true;
+	}
+
+	if (m_isQualityReduced && TheGameClient && TheGameClient->getFrame() <= 1)
+	{
+		TheWritableGlobalData->m_useShadowVolumes = m_userShadowVolumesEnabled;
+		TheWritableGlobalData->m_useShadowDecals = m_userShadowDecalsEnabled;
+		TheWritableGlobalData->m_useHeatEffects = m_userHeatEffectsEnabled;
+		setDynamicLODLevel(m_userDynamicLOD);
+		if (TheGameClient)
+			TheGameClient->allocateShadows();
+		m_isQualityReduced = false;
+		m_sustainedGoodFrames = 0;
+	}
+
+	if (!m_isQualityReduced)
+	{
+		m_userShadowVolumesEnabled = TheGlobalData->m_useShadowVolumes;
+		m_userShadowDecalsEnabled = TheGlobalData->m_useShadowDecals;
+		m_userHeatEffectsEnabled = TheGlobalData->m_useHeatEffects;
+		m_userDynamicLOD = m_currentDynamicLOD;
+	}
+
+	m_sustainedGoodFrames = (averageFPS >= 58.0f) ? (m_sustainedGoodFrames + 1) : 0; // Track a duration of sustained good performance
+
+	bool shouldReduceQuality = (averageFPS < 56.0f && TheGameClient && TheGameClient->getFrame() > LOGICFRAMES_PER_SECOND * 10);
+	if (shouldReduceQuality && !m_isQualityReduced)
+	{
+		setDynamicLODLevel(DYNAMIC_GAME_LOD_LOW);
+		TheGameClient->releaseShadows();
+		TheWritableGlobalData->m_useShadowVolumes = false;
+		TheWritableGlobalData->m_useShadowDecals = false;
+		TheWritableGlobalData->m_useHeatEffects = false;
+		m_isQualityReduced = true;
+	}
+
+	// Restore to user preferences after sustained good performance
+	else if (!shouldReduceQuality && m_isQualityReduced)
+	{
+		if (m_sustainedGoodFrames > 300)
+		{
+			TheWritableGlobalData->m_useShadowVolumes = m_userShadowVolumesEnabled;
+			TheWritableGlobalData->m_useShadowDecals = m_userShadowDecalsEnabled;
+			TheWritableGlobalData->m_useHeatEffects = m_userHeatEffectsEnabled;
+
+			if (TheGameClient)
+				TheGameClient->allocateShadows();
+
+			DynamicGameLODLevel lod = TheGameLODManager->findDynamicLODLevel(averageFPS);
+			TheGameLODManager->setDynamicLODLevel(lod);
+
+			m_isQualityReduced = false;
+			m_sustainedGoodFrames = 0;
+		}
+	}
+}
+#endif // GENERALS_ONLINE_HIGH_FPS_SERVER

GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DDisplay.cpp

@@ -1686,6 +1686,9 @@ void W3DDisplay::draw( void )
 		return;
 
 	updateAverageFPS();
+#if defined(GENERALS_ONLINE_HIGH_FPS_SERVER)
+	TheGameLODManager->updateGraphicsQualityState(m_averageFPS);
+#else
 	if (TheGlobalData->m_enableDynamicLOD && TheGameLogic->getShowDynamicLOD())
 	{
 		DynamicGameLODLevel lod=TheGameLODManager->findDynamicLODLevel(m_averageFPS);
@@ -1695,6 +1698,7 @@ void W3DDisplay::draw( void )
 	{	//if dynamic LOD is turned off, force highest LOD
 		TheGameLODManager->setDynamicLODLevel(DYNAMIC_GAME_LOD_VERY_HIGH);
 	}
+#endif
 
 	if (TheGlobalData->m_terrainLOD == TERRAIN_LOD_AUTOMATIC && TheTerrainRenderObject)
 	{