XiJianYCYL/Assets/3D/models/DangJian/PartyCollections/VolumetricFog/Scripts/VolumetricFog.cs

//------------------------------------------------------------------------------------------------------------------
// Volumetric Fog & Mist
// Created by Ramiro Oliva (Kronnect)
//------------------------------------------------------------------------------------------------------------------
using UnityEngine;

#if UNITY_EDITOR
using UnityEditor;
#endif
using System;
using System.Collections;
using System.Collections.Generic;

#if GAIA_PRESENT
using Gaia;
#endif


namespace VolumetricFogAndMist {
				public enum FOG_PRESET {
								Clear = 0,
								Mist = 10,
								WindyMist = 11,
								LowClouds = 20,
								SeaClouds = 21,
								GroundFog = 30,
								FrostedGround = 31,
								FoggyLake = 32,
								Fog = 41,
								HeavyFog = 42,
								SandStorm1 = 50,
								Smoke = 51,
								ToxicSwamp = 52,
								SandStorm2 = 53,
								WorldEdge = 200,
								Custom = 1000
				}

				public enum SPSR_BEHAVIOUR {
								AutoDetectInEditor = 0,
								ForcedOn = 1,
								ForcedOff = 2
				}

				public enum TRANSPARENT_MODE {
								None = 0,
								Blend = 1
				}

				public enum COMPUTE_DEPTH_SCOPE {
								OnlyTreeBillboards = 0,
								EverythingInLayer = 1,
								TreeBillboardsAndTransparentObjects = 2
				}

				public enum LIGHTING_MODEL {
								Classic = 0,
								Natural = 1,
								SingleLight = 2
				}

				public enum SUN_SHADOWS_BAKE_MODE {
								Realtime = 0,
								Discrete = 1
				}

				public enum FOG_VOID_TOPOLOGY {
								Sphere = 0,
								Box = 1
				}

				public enum FOG_AREA_TOPOLOGY {
								Sphere = 1,
								Box = 2
				}

				public enum FOG_AREA_SORTING_MODE {
								DistanceToCamera = 0,
								Altitude = 1,
								Fixed = 2
				}

				public enum FOG_AREA_FOLLOW_MODE {
								FullXYZ = 0,
								RestrictToXZPlane = 1
				}


				[ExecuteInEditMode]
				[AddComponentMenu ("Image Effects/Rendering/Volumetric Fog & Mist")]
				[HelpURL ("http://kronnect.com/taptapgo")]
				public partial class VolumetricFog : MonoBehaviour {
								public const string SKW_FOG_DISTANCE_ON = "FOG_DISTANCE_ON";
								public const string SKW_LIGHT_SCATTERING = "FOG_SCATTERING_ON";
								public const string SKW_FOG_AREA_BOX = "FOG_AREA_BOX";
								public const string SKW_FOG_AREA_SPHERE = "FOG_AREA_SPHERE";
								public const string SKW_FOG_VOID_BOX = "FOG_VOID_BOX";
								public const string SKW_FOG_VOID_SPHERE = "FOG_VOID_SPHERE";
								public const string SKW_FOG_HAZE_ON = "FOG_HAZE_ON";
								public const string SKW_FOG_OF_WAR_ON = "FOG_OF_WAR_ON";
								public const string SKW_FOG_BLUR = "FOG_BLUR_ON";
								public const string SKW_SUN_SHADOWS = "FOG_SUN_SHADOWS_ON";
								public const string SKW_FOG_USE_XY_PLANE = "FOG_USE_XY_PLANE";
								public const string SKW_FOG_COMPUTE_DEPTH = "FOG_COMPUTE_DEPTH";

								const float TIME_BETWEEN_TEXTURE_UPDATES = 0.2f;
								const string DEPTH_CAM_NAME = "VFMDepthCamera";
								const string DEPTH_SUN_CAM_NAME = "VFMDepthSunCamera";
								const string VFM_BUILD_HINT = "VFMBuildHint9b1";

								static VolumetricFog _fog;

								public static VolumetricFog instance {
												get {
																if (_fog == null) {
																				if (Camera.main != null)
																								_fog = Camera.main.GetComponent<VolumetricFog> ();
																				if (_fog == null) {
																								foreach (Camera camera in Camera.allCameras) {
																												_fog = camera.GetComponent<VolumetricFog> ();
																												if (_fog != null)
																																break;
																								}
																				}
																}
																return _fog;
												}
								}



								[HideInInspector]
								public bool
												isDirty;

								#region General settings

								[SerializeField]
								FOG_PRESET
												_preset = FOG_PRESET.Mist;

								public FOG_PRESET preset {
												get { return _preset; }
												set {
																if (value != _preset) {
																				_preset = value;
																				UpdatePreset ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								VolumetricFogProfile
												_profile;

								public VolumetricFogProfile profile {
												get { return _profile; }
												set {
																if (value != _profile) {
																				_profile = value;
																				if (_profile != null) {
																								_profile.Load (this);
																								_preset = FOG_PRESET.Custom;
																				}
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_useFogVolumes = false;

								public bool useFogVolumes {
												get { return _useFogVolumes; }
												set {
																if (value != _useFogVolumes) {
																				_useFogVolumes = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_debugPass = false;

								public bool debugDepthPass {
												get { return _debugPass; }
												set {
																if (value != _debugPass) {
																				_debugPass = value;
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								TRANSPARENT_MODE _transparencyBlendMode = TRANSPARENT_MODE.None;

								public TRANSPARENT_MODE transparencyBlendMode {
												get { return _transparencyBlendMode; }
												set {
																if (value != _transparencyBlendMode) {
																				_transparencyBlendMode = value;
																				UpdateMaterialProperties ();
																				UpdateRenderComponents ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_transparencyBlendPower = 1.0f;

								public float transparencyBlendPower {
												get { return _transparencyBlendPower; }
												set {
																if (value != _transparencyBlendPower) {
																				_transparencyBlendPower = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								LayerMask
												_transparencyLayerMask = -1;

								public LayerMask transparencyLayerMask {
												get { return _transparencyLayerMask; }
												set {
																if (_transparencyLayerMask != value) {
																				_transparencyLayerMask = value;
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								LIGHTING_MODEL _lightingModel = LIGHTING_MODEL.Classic;

								public LIGHTING_MODEL lightingModel {
												get { return _lightingModel; }
												set {
																if (value != _lightingModel) {
																				_lightingModel = value;
																				UpdateMaterialProperties ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_computeDepth = false;

								public bool computeDepth {
												get { return _computeDepth; }
												set {
																if (value != _computeDepth) {
																				_computeDepth = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								COMPUTE_DEPTH_SCOPE
												_computeDepthScope = COMPUTE_DEPTH_SCOPE.OnlyTreeBillboards;

								public COMPUTE_DEPTH_SCOPE computeDepthScope {
												get { return _computeDepthScope; }
												set {
																if (value != _computeDepthScope) {
																				_computeDepthScope = value;
																				if (_computeDepthScope == COMPUTE_DEPTH_SCOPE.TreeBillboardsAndTransparentObjects) {
																								_transparencyBlendMode = TRANSPARENT_MODE.None;
																				}
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_transparencyCutOff = 0.1f;

								public float transparencyCutOff {
												get { return _transparencyCutOff; }
												set {
																if (value != _transparencyCutOff) {
																				_transparencyCutOff = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_renderBeforeTransparent;

								public bool renderBeforeTransparent {
												get { return _renderBeforeTransparent; }
												set {
																if (value != _renderBeforeTransparent) {
																				_renderBeforeTransparent = value;
																				if (_renderBeforeTransparent) {
																								_transparencyBlendMode = TRANSPARENT_MODE.None;
																				}
																				UpdateMaterialProperties ();
																				UpdateRenderComponents ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								GameObject
												_sun;

								public GameObject sun {
												get { return _sun; }
												set {
																if (value != _sun) {
																				_sun = value;
																				UpdateSun ();
																}
												}
								}

								[SerializeField]
								bool
												_sunCopyColor = true;

								public bool sunCopyColor {
												get { return _sunCopyColor; }
												set {
																if (value != _sunCopyColor) {
																				_sunCopyColor = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								#endregion

								#region Fog Geometry settings

								[SerializeField]
								float
												_density = 1.0f;

								public float density {
												get { return _density; }
												set {
																if (value != _density) {
																				_preset = FOG_PRESET.Custom;
																				_density = value;
																				UpdateMaterialProperties ();
																				UpdateTextureAlpha ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_noiseStrength = 0.8f;

								public float noiseStrength {
												get { return _noiseStrength; }
												set {
																if (value != _noiseStrength) {
																				_preset = FOG_PRESET.Custom;
																				_noiseStrength = value;
																				UpdateMaterialProperties ();
																				UpdateTextureAlpha ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_noiseFinalMultiplier = 1f;

								public float noiseFinalMultiplier {
												get { return _noiseFinalMultiplier; }
												set {
																if (value != _noiseFinalMultiplier) {
																				_preset = FOG_PRESET.Custom;
																				_noiseFinalMultiplier = value;
																				UpdateMaterialProperties ();
																				UpdateTextureAlpha ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_noiseSparse;

								public float noiseSparse {
												get { return _noiseSparse; }
												set {
																if (value != _noiseSparse) {
																				_preset = FOG_PRESET.Custom;
																				_noiseSparse = value;
																				UpdateMaterialProperties ();
																				UpdateTextureAlpha ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_distance = 0f;

								public float distance {
												get { return _distance; }
												set {
																if (value != _distance) {
																				_preset = FOG_PRESET.Custom;
																				_distance = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_maxFogLength = 1000f;

								public float maxFogLength {
												get { return _maxFogLength; }
												set {
																if (value != _maxFogLength) {
																				_maxFogLength = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_maxFogLengthFallOff = 0f;

								public float maxFogLengthFallOff {
												get { return _maxFogLengthFallOff; }
												set {
																if (value != _maxFogLengthFallOff) {
																				_maxFogLengthFallOff = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_distanceFallOff = 0f;

								public float distanceFallOff {
												get { return _distanceFallOff; }
												set {
																if (value != _distanceFallOff) {
																				_preset = FOG_PRESET.Custom;
																				_distanceFallOff = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_height = 4.0f;

								public float height {
												get { return _height; }
												set {
																if (value != _height) {
																				_preset = FOG_PRESET.Custom;
																				_height = Mathf.Max (value, 0.00001f);
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_baselineHeight = 0f;

								public float baselineHeight {
												get { return _baselineHeight; }
												set {
																if (value != _baselineHeight) {
																				_preset = FOG_PRESET.Custom;
																				_baselineHeight = value;
																				if (_fogAreaRadius > 0)
																								_fogAreaPosition.y = _baselineHeight;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_baselineRelativeToCamera = false;

								public bool baselineRelativeToCamera {
												get { return _baselineRelativeToCamera; }
												set {
																if (value != _baselineRelativeToCamera) {
																				_preset = FOG_PRESET.Custom;
																				_baselineRelativeToCamera = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_baselineRelativeToCameraDelay = 0;

								public float baselineRelativeToCameraDelay {
												get { return _baselineRelativeToCameraDelay; }
												set {
																if (value != _baselineRelativeToCameraDelay) {
																				_baselineRelativeToCameraDelay = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_noiseScale = 1;

								public float noiseScale {
												get { return _noiseScale; }
												set {
																if (value != _noiseScale) {
																				_preset = FOG_PRESET.Custom;
																				_noiseScale = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								#endregion

								#region Fog Style settings

								[SerializeField]
								float
												_alpha = 1.0f;

								public float alpha {
												get { return _alpha; }
												set {
																if (value != _alpha) {
																				_preset = FOG_PRESET.Custom;
																				_alpha = value;
																				currentFogAlpha = _alpha;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Color
												_color = new Color (0.89f, 0.89f, 0.89f, 1);

								public Color color {
												get { return _color; }
												set {
																if (value != _color) {
																				_preset = FOG_PRESET.Custom;
																				_color = value;
																				currentFogColor = _color;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Color
												_specularColor = new Color (1, 1, 0.8f, 1);

								public Color specularColor {
												get { return _specularColor; }
												set {
																if (value != _specularColor) {
																				_preset = FOG_PRESET.Custom;
																				_specularColor = value;
																				currentFogSpecularColor = _specularColor;
																				UpdateMaterialProperties ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_specularThreshold = 0.6f;

								public float specularThreshold {
												get { return _specularThreshold; }
												set {
																if (value != _specularThreshold) {
																				_preset = FOG_PRESET.Custom;
																				_specularThreshold = value;
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_specularIntensity = 0.2f;

								public float specularIntensity {
												get { return _specularIntensity; }
												set {
																if (value != _specularIntensity) {
																				_preset = FOG_PRESET.Custom;
																				_specularIntensity = value;
																				UpdateMaterialProperties ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Vector3
												_lightDirection = new Vector3 (1, 0, -1);

								public Vector3 lightDirection {
												get { return _lightDirection; }
												set {
																if (value != _lightDirection) {
																				_preset = FOG_PRESET.Custom;
																				_lightDirection = value;
																				UpdateMaterialProperties ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightIntensity = 0.2f;

								public float lightIntensity {
												get { return _lightIntensity; }
												set {
																if (value != _lightIntensity) {
																				_preset = FOG_PRESET.Custom;
																				_lightIntensity = value;
																				UpdateMaterialProperties ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Color
												_lightColor = Color.white;

								public Color lightColor {
												get { return _lightColor; }
												set {
																if (value != _lightColor) {
																				_preset = FOG_PRESET.Custom;
																				_lightColor = value;
																				currentLightColor = _lightColor;
																				UpdateMaterialProperties ();
																				UpdateTexture ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								int
												_updateTextureSpread = 1;

								public int updateTextureSpread {
												get { return _updateTextureSpread; } 
												set {
																if (value != _updateTextureSpread) {
																				_updateTextureSpread = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_speed = 0.01f;

								public float speed {
												get { return _speed; }
												set {
																if (value != _speed) {
																				_preset = FOG_PRESET.Custom;
																				_speed = value;
																				if (!Application.isPlaying)
																								UpdateWindSpeedQuick ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Vector3
												_windDirection = new Vector3 (-1, 0, 0);

								public Vector3 windDirection {
												get { return _windDirection; }
												set {
																if (value != _windDirection) {
																				_preset = FOG_PRESET.Custom;
																				_windDirection = value.normalized;
																				if (!Application.isPlaying)
																								UpdateWindSpeedQuick ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								bool
												_useRealTime = false;

								public bool useRealTime {
												get { return _useRealTime; }
												set {
																if (value != _useRealTime) {
																				_useRealTime = value;
																				isDirty = true;
																}
												}
								}


								#endregion

								#region Sky Haze settings

								[SerializeField]
								Color
												_skyColor = new Color (0.89f, 0.89f, 0.89f, 1);

								public Color skyColor {
												get { return _skyColor; }
												set {
																if (value != _skyColor) {
																				_preset = FOG_PRESET.Custom;
																				_skyColor = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_skyHaze = 50.0f;

								public float skyHaze {
												get { return _skyHaze; }
												set {
																if (value != _skyHaze) {
																				_preset = FOG_PRESET.Custom;
																				_skyHaze = value;
																				if (!Application.isPlaying)
																								UpdateWindSpeedQuick ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_skySpeed = 0.3f;

								public float skySpeed {
												get { return _skySpeed; }
												set {
																if (value != _skySpeed) {
																				_preset = FOG_PRESET.Custom;
																				_skySpeed = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_skyNoiseStrength = 0.1f;

								public float skyNoiseStrength {
												get { return _skyNoiseStrength; }
												set {
																if (value != _skyNoiseStrength) {
																				_preset = FOG_PRESET.Custom;
																				_skyNoiseStrength = value;
																				if (!Application.isPlaying)
																								UpdateWindSpeedQuick ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_skyAlpha = 1.0f;

								public float skyAlpha {
												get { return _skyAlpha; }
												set {
																if (value != _skyAlpha) {
																				_preset = FOG_PRESET.Custom;
																				_skyAlpha = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_skyDepth = 0.999f;

								public float skyDepth {
												get { return _skyDepth; }
												set {
																if (value != _skyDepth) {
																				_skyDepth = value;
																				if (!Application.isPlaying)
																								UpdateWindSpeedQuick ();
																				isDirty = true;
																}
												}
								}

								#endregion

								#region Fog Void settings

								[SerializeField]
								GameObject
												_character;

								public GameObject character {
												get { return _character; }
												set {
																if (value != _character) {
																				_character = value;
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								FOG_VOID_TOPOLOGY
												_fogVoidTopology = FOG_VOID_TOPOLOGY.Sphere;

								public FOG_VOID_TOPOLOGY fogVoidTopology {
												get { return _fogVoidTopology; }
												set {
																if (value != _fogVoidTopology) {
																				_fogVoidTopology = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogVoidFallOff = 1.0f;

								public float fogVoidFallOff {
												get { return _fogVoidFallOff; }
												set {
																if (value != _fogVoidFallOff) {
																				_preset = FOG_PRESET.Custom;
																				_fogVoidFallOff = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogVoidRadius = 0.0f;

								public float fogVoidRadius {
												get { return _fogVoidRadius; }
												set {
																if (value != _fogVoidRadius) {
																				_preset = FOG_PRESET.Custom;
																				_fogVoidRadius = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Vector3
												_fogVoidPosition = Vector3.zero;

								public Vector3 fogVoidPosition {
												get { return _fogVoidPosition; }
												set {
																if (value != _fogVoidPosition) {
																				_preset = FOG_PRESET.Custom;
																				_fogVoidPosition = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogVoidDepth = 0.0f;

								public float fogVoidDepth {
												get { return _fogVoidDepth; }
												set {
																if (value != _fogVoidDepth) {
																				_preset = FOG_PRESET.Custom;
																				_fogVoidDepth = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogVoidHeight = 0.0f;

								public float fogVoidHeight {
												get { return _fogVoidHeight; }
												set {
																if (value != _fogVoidHeight) {
																				_preset = FOG_PRESET.Custom;
																				_fogVoidHeight = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_fogVoidInverted = false;

								[Obsolete ("Fog Void inverted is now deprecated. Use Fog Area settings.")]
								public bool fogVoidInverted {
												get { return _fogVoidInverted; }
												set {
																_fogVoidInverted = value;
												}
								}

								#endregion


								#region Fog Area settings

								[SerializeField]
								bool
												_fogAreaShowGizmos = true;

								public bool fogAreaShowGizmos {
												get { return _fogAreaShowGizmos; }
												set {
																if (value != _fogAreaShowGizmos) {
																				_fogAreaShowGizmos = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								GameObject
												_fogAreaCenter;

								public GameObject fogAreaCenter {
												get { return _fogAreaCenter; }
												set {
																if (value != _character) {
																				_fogAreaCenter = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogAreaFallOff = 1.0f;

								public float fogAreaFallOff {
												get { return _fogAreaFallOff; }
												set {
																if (value != _fogAreaFallOff) {
																				_fogAreaFallOff = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								FOG_AREA_FOLLOW_MODE
												_fogAreaFollowMode = FOG_AREA_FOLLOW_MODE.FullXYZ;

								public FOG_AREA_FOLLOW_MODE fogAreaFollowMode {
												get { return _fogAreaFollowMode; }
												set {
																if (value != _fogAreaFollowMode) {
																				_fogAreaFollowMode = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								FOG_AREA_TOPOLOGY
												_fogAreaTopology = FOG_AREA_TOPOLOGY.Sphere;

								public FOG_AREA_TOPOLOGY fogAreaTopology {
												get { return _fogAreaTopology; }
												set {
																if (value != _fogAreaTopology) {
																				_fogAreaTopology = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_fogAreaRadius = 0.0f;

								public float fogAreaRadius {
												get { return _fogAreaRadius; }
												set {
																if (value != _fogAreaRadius) {
																				_fogAreaRadius = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Vector3
												_fogAreaPosition = Vector3.zero;

								public Vector3 fogAreaPosition {
												get { return _fogAreaPosition; }
												set {
																if (value != _fogAreaPosition) {
																				_fogAreaPosition = value;
																				if (_fogAreaCenter == null || _fogAreaFollowMode == FOG_AREA_FOLLOW_MODE.RestrictToXZPlane) {
																								_baselineHeight = _fogAreaPosition.y;
																				}
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogAreaDepth = 0.0f;

								public float fogAreaDepth {
												get { return _fogAreaDepth; }
												set {
																if (value != _fogAreaDepth) {
																				_fogAreaDepth = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogAreaHeight = 0.0f;

								public float fogAreaHeight {
												get { return _fogAreaHeight; }
												set {
																if (value != _fogAreaHeight) {
																				_fogAreaHeight = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								FOG_AREA_SORTING_MODE
												_fogAreaSortingMode = FOG_AREA_SORTING_MODE.DistanceToCamera;

								public FOG_AREA_SORTING_MODE fogAreaSortingMode {
												get { return _fogAreaSortingMode; }
												set {
																if (value != _fogAreaSortingMode) {
																				_fogAreaSortingMode = value;
																				lastTimeSortInstances = 0;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								int
												_fogAreaRenderOrder = 1;

								public int fogAreaRenderOrder {
												get { return _fogAreaRenderOrder; }
												set {
																if (value != _fogAreaRenderOrder) {
																				_fogAreaRenderOrder = value;
																				lastTimeSortInstances = 0;
																				isDirty = true;
																}
												}
								}

								#endregion


								#region Point Light settings

								public const int MAX_POINT_LIGHTS = 6;
								[SerializeField]
								GameObject[]
												_pointLights = new GameObject[MAX_POINT_LIGHTS];
								[SerializeField]
								float[]
												_pointLightRanges = new float[MAX_POINT_LIGHTS];
								[SerializeField]
								float[]
												_pointLightIntensities = new float[MAX_POINT_LIGHTS] {
												1.0f,
												1.0f,
												1.0f,
												1.0f,
												1.0f,
												1.0f
								};
								[SerializeField]
								float[]
												_pointLightIntensitiesMultiplier = new float[MAX_POINT_LIGHTS] {
												1.0f,
												1.0f,
												1.0f,
												1.0f,
												1.0f,
												1.0f
								};
								[SerializeField]
								Vector3[]
												_pointLightPositions = new Vector3[MAX_POINT_LIGHTS];
								[SerializeField]
								Color[]
												_pointLightColors = new Color[MAX_POINT_LIGHTS] {
												new Color (1, 1, 0, 1),
												new Color (1, 1, 0, 1),
												new Color (1, 1, 0, 1),
												new Color (1, 1, 0, 1),
												new Color (1, 1, 0, 1),
												new Color (1, 1, 0, 1)
								};

								[SerializeField]
								bool
												_pointLightTrackingAuto = false;

								public bool pointLightTrackAuto {
												get { return _pointLightTrackingAuto; }
												set {
																if (value != _pointLightTrackingAuto) {
																				_pointLightTrackingAuto = value;
																				TrackPointLights ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								Transform
												_pointLightTrackingPivot;

								public Transform pointLightTrackingPivot {
												get { return _pointLightTrackingPivot; }
												set {
																if (value != _pointLightTrackingPivot) {
																				_pointLightTrackingPivot = value;
																				TrackPointLights ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								int
												_pointLightTrackingCount = 0;

								public int pointLightTrackingCount {
												get { return _pointLightTrackingCount; }
												set {
																if (value != _pointLightTrackingCount) {
																				_pointLightTrackingCount = Mathf.Clamp (value, 0, MAX_POINT_LIGHTS);
																				TrackPointLights ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_pointLightTrackingCheckInterval = 1f;

								public float pointLightTrackingCheckInterval {
												get { return _pointLightTrackingCheckInterval; }
												set {
																if (value != _pointLightTrackingCheckInterval) {
																				_pointLightTrackingCheckInterval = value;
																				TrackPointLights ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_pointLightInscattering = 1f;

								public float pointLightInscattering {
												get { return _pointLightInscattering; }
												set {
																if (value != _pointLightInscattering) {
																				_pointLightInscattering = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
								_pointLightIntensity = 1f;

								public float pointLightIntensity {
												get { return _pointLightIntensity; }
												set {
																if (value != _pointLightIntensity) {
																				_pointLightIntensity = value;
																				isDirty = true;
																}
												}
								}


								#endregion

								#region Optimization settings

								[SerializeField]
								int
												_downsampling = 1;

								public int downsampling {
												get { return _downsampling; }
												set {
																if (value != _downsampling) {
																				_preset = FOG_PRESET.Custom;
																				_downsampling = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_edgeImprove = false;

								public bool edgeImprove {
												get { return _edgeImprove; }
												set {
																if (value != _edgeImprove) {
																				_preset = FOG_PRESET.Custom;
																				_edgeImprove = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_edgeThreshold = 0.0005f;

								public float edgeThreshold {
												get { return _edgeThreshold; }
												set {
																if (value != _edgeThreshold) {
																				_preset = FOG_PRESET.Custom;
																				_edgeThreshold = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_stepping = 12.0f;

								public float stepping {
												get { return _stepping; }
												set {
																if (value != _stepping) {
																				_preset = FOG_PRESET.Custom;
																				_stepping = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_steppingNear = 1f;

								public float steppingNear {
												get { return _steppingNear; }
												set {
																if (value != _steppingNear) {
																				_preset = FOG_PRESET.Custom;
																				_steppingNear = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_dithering = false;

								public bool dithering {
												get { return _dithering; }
												set {
																if (value != _dithering) {
																				_dithering = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_ditherStrength = 0.75f;

								public float ditherStrength {
												get { return _ditherStrength; }
												set {
																if (value != _ditherStrength) {
																				_ditherStrength = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

					
								
								[SerializeField]
								float
												_jitterStrength = 0.5f;

								public float jitterStrength {
												get { return _jitterStrength; }
												set {
																if (value != _jitterStrength) {
																				_jitterStrength = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								#endregion

								#region Shafts settings

								[SerializeField]
								bool
												_lightScatteringEnabled = false;

								public bool lightScatteringEnabled {
												get { return _lightScatteringEnabled; }
												set {
																if (value != _lightScatteringEnabled) {
																				_lightScatteringEnabled = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightScatteringDiffusion = 0.7f;

								public float lightScatteringDiffusion {
												get { return _lightScatteringDiffusion; }
												set {
																if (value != _lightScatteringDiffusion) {
																				_lightScatteringDiffusion = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_lightScatteringSpread = 0.686f;

								public float lightScatteringSpread {
												get { return _lightScatteringSpread; }
												set {
																if (value != _lightScatteringSpread) {
																				_lightScatteringSpread = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								int
												_lightScatteringSamples = 16;

								public int lightScatteringSamples {
												get { return _lightScatteringSamples; }
												set {
																if (value != _lightScatteringSamples) {
																				_lightScatteringSamples = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightScatteringWeight = 1.9f;

								public float lightScatteringWeight {
												get { return _lightScatteringWeight; }
												set {
																if (value != _lightScatteringWeight) {
																				_lightScatteringWeight = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightScatteringIllumination = 18f;

								public float lightScatteringIllumination {
												get { return _lightScatteringIllumination; }
												set {
																if (value != _lightScatteringIllumination) {
																				_lightScatteringIllumination = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightScatteringDecay = 0.986f;

								public float lightScatteringDecay {
												get { return _lightScatteringDecay; }
												set {
																if (value != _lightScatteringDecay) {
																				_lightScatteringDecay = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightScatteringExposure = 0;
								//0.02f;

								public float lightScatteringExposure {
												get { return _lightScatteringExposure; }
												set {
																if (value != _lightScatteringExposure) {
																				_lightScatteringExposure = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_lightScatteringJittering = 0.5f;

								public float lightScatteringJittering {
												get { return _lightScatteringJittering; }
												set {
																if (value != _lightScatteringJittering) {
																				_lightScatteringJittering = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								#endregion

								#region Fog Blur

								[SerializeField]
								bool
												_fogBlur = false;

								public bool fogBlur {
												get { return _fogBlur; }
												set {
																if (value != _fogBlur) {
																				_fogBlur = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_fogBlurDepth = 0.05f;

								public float fogBlurDepth {
												get { return _fogBlurDepth; }
												set {
																if (value != _fogBlurDepth) {
																				_fogBlurDepth = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								#endregion

								#region Sun Shadows


								[SerializeField]
								bool
												_sunShadows = false;

								public bool sunShadows {
												get { return _sunShadows; }
												set {
																if (value != _sunShadows) {
																				_sunShadows = value;
																				CleanUpTextureDepthSun ();

																				if (_sunShadows) {
																								needUpdateDepthSunTexture = true;
																				} else {
																								DestroySunShadowsDependencies ();
																				}

																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								LayerMask
												_sunShadowsLayerMask = -1;

								public LayerMask sunShadowsLayerMask {
												get { return _sunShadowsLayerMask; }
												set {
																if (_sunShadowsLayerMask != value) {
																				_sunShadowsLayerMask = value;
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_sunShadowsStrength = 0.5f;

								public float sunShadowsStrength {
												get { return _sunShadowsStrength; }
												set {
																if (value != _sunShadowsStrength) {
																				_sunShadowsStrength = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}


								[SerializeField]
								float
												_sunShadowsBias = 0.1f;

								public float sunShadowsBias {
												get { return _sunShadowsBias; }
												set {
																if (value != _sunShadowsBias) {
																				_sunShadowsBias = value;
																				needUpdateDepthSunTexture = true;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_sunShadowsJitterStrength = 0.1f;

								public float sunShadowsJitterStrength {
												get { return _sunShadowsJitterStrength; }
												set {
																if (value != _sunShadowsJitterStrength) {
																				_sunShadowsJitterStrength = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								int
												_sunShadowsResolution = 2;
								// default = 2^(9+2) = 2048 texture size

								public int sunShadowsResolution {
												get { return _sunShadowsResolution; }
												set {
																if (value != _sunShadowsResolution) {
																				_sunShadowsResolution = value;
																				needUpdateDepthSunTexture = true;
																				CleanUpTextureDepthSun ();

																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_sunShadowsMaxDistance = 200f;

								public float sunShadowsMaxDistance {
												get { return _sunShadowsMaxDistance; }
												set {
																if (value != _sunShadowsMaxDistance) {
																				_sunShadowsMaxDistance = value;
																				needUpdateDepthSunTexture = true;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								SUN_SHADOWS_BAKE_MODE
												_sunShadowsBakeMode = SUN_SHADOWS_BAKE_MODE.Discrete;

								public SUN_SHADOWS_BAKE_MODE sunShadowsBakeMode {
												get { return _sunShadowsBakeMode; } 
												set {
																if (value != _sunShadowsBakeMode) {
																				_sunShadowsBakeMode = value;
																				needUpdateDepthSunTexture = true;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_sunShadowsRefreshInterval = 0;
								// 0 = no update unless Sun changes position

								public float sunShadowsRefreshInterval {
												get { return _sunShadowsRefreshInterval; }
												set {
																if (value != _sunShadowsRefreshInterval) {
																				_sunShadowsRefreshInterval = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								float
												_sunShadowsCancellation = 0f;

								public float sunShadowsCancellation {
												get { return _sunShadowsCancellation; }
												set {
																if (value != _sunShadowsCancellation) {
																				_sunShadowsCancellation = value;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								#endregion

								#region Turbulence

								[SerializeField]
								float
												_turbulenceStrength = 0f;

								public float turbulenceStrength {
												get { return _turbulenceStrength; }
												set {
																if (value != _turbulenceStrength) {
																				_turbulenceStrength = value;
																				if (_turbulenceStrength <= 0f)
																								UpdateTexture ();    // reset texture to normal
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								#endregion

								#region Other settings

								[SerializeField]
								bool
												_useXYPlane = false;

								public bool useXYPlane {
												get { return _useXYPlane; }
												set {
																if (value != _useXYPlane) {
																				_useXYPlane = value;
																				if (_sunShadows)
																								needUpdateDepthSunTexture = true;
																				UpdateMaterialProperties ();
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								bool
												_useSinglePassStereoRenderingMatrix = false;

								public bool useSinglePassStereoRenderingMatrix {
												get { return _useSinglePassStereoRenderingMatrix; }
												set {
																if (value != _useSinglePassStereoRenderingMatrix) {
																				_useSinglePassStereoRenderingMatrix = value;
																				isDirty = true;
																}
												}
								}

								[SerializeField]
								SPSR_BEHAVIOUR _spsrBehaviour = SPSR_BEHAVIOUR.AutoDetectInEditor;

								public SPSR_BEHAVIOUR spsrBehaviour {
												get { return _spsrBehaviour; }
												set {
																if (value != _spsrBehaviour) {
																				_spsrBehaviour = value;
																				isDirty = true;
																}
												}
								}



								#endregion

								// State variables

								public Camera fogCamera { get { return mainCamera; } }

								public int renderingInstancesCount { get { return _renderingInstancesCount; } }

								public bool hasCamera { get { return _hasCamera; } }

								[NonSerialized]
								public float distanceToCameraMin, distanceToCameraMax, distanceToCamera, distanceToCameraYAxis;

								public VolumetricFog fogRenderer;

								#region Internal variables

								bool isPartOfScene;

								// transitions
								float initialFogAlpha, targetFogAlpha;
								float initialSkyHazeAlpha, targetSkyHazeAlpha;
								bool transitionAlpha, transitionColor, transitionSpecularColor, transitionLightColor, transitionProfile;
								bool targetColorActive, targetSpecularColorActive, targetLightColorActive;
								Color initialFogColor, targetFogColor;
								Color initialFogSpecularColor, targetFogSpecularColor;
								Color initialLightColor, targetLightColor;
								float transitionDuration;
								float transitionStartTime;
								float currentFogAlpha, currentSkyHazeAlpha;
								Color currentFogColor, currentFogSpecularColor, currentLightColor;
								VolumetricFogProfile initialProfile, targetProfile;

								// fog height related
								float oldBaselineRelativeCameraY;
								float currentFogAltitude;

								// sky related
								float skyHazeSpeedAcum;

								// rendering
								bool _hasCamera;
								// if this script is attached to a camera or to another object
								Camera mainCamera;
								List<string> shaderKeywords;
								Material blurMat;
								RenderBuffer[] mrt;
								int _renderingInstancesCount;
								bool shouldUpdateMaterialProperties;

								[NonSerialized]
								public Material fogMat;
								RenderTexture depthTexture, depthSunTexture, reducedDestination;

								// point light related
								Light[] pointLightComponents = new Light[MAX_POINT_LIGHTS];
								Light[] lastFoundLights, lightBuffer;
								GameObject[] currentLights = new GameObject[MAX_POINT_LIGHTS];
								float trackPointAutoLastTime;
								float trackPointCheckNewLightsLastTime;

								// transparency support related
								Shader depthShader, depthShaderAndTrans;
								GameObject depthCamObj;
								Camera depthCam;

								// fog texture/lighting/colors related
								float lastTextureUpdate;
								Vector3 windSpeedAcum;
								Texture2D adjustedTexture;
								Color[] noiseColors, adjustedColors;
								float sunLightIntensity = 1.0f;
								bool needUpdateTexture, hasChangeAdjustedColorsAlpha;
								int updatingTextureSlice;
								Color updatingTextureLightColor;
								Color lastRenderSettingsAmbientLight;
								float lastRenderSettingsAmbientIntensity;

								// Sun related
								Light sunLight;
								Vector2 oldSunPos;
								float sunFade = 1f;

								// Sun shadows related
								GameObject depthSunCamObj;
								Camera depthSunCam;
								Shader depthSunShader;
								bool needUpdateDepthSunTexture;
								float lastShadowUpdateFrame;

								// turbulence related
								Texture2D adjustedChaosTexture;
								Material chaosLerpMat;
								float turbAcum;
								float deltaTime, timeOfLastRender;

								// fog instances stuff
								List<VolumetricFog> fogInstances = new List<VolumetricFog> ();
								List<VolumetricFog> fogRenderInstances = new List<VolumetricFog> ();
								MeshRenderer mr;
								float lastTimeSortInstances;
								const float FOG_INSTANCES_SORT_INTERVAL = 2f;
								Vector3 lastCamPos;

								#endregion


								#region Game loop events

								void OnEnable () {
												// Note: OnEnable can be called several times when using fog areas

												isPartOfScene = isPartOfScene || IsPartOfScene ();
												if (!isPartOfScene)
																return;

												if (_fogVoidInverted) { // conversion to fog area from fog void from previous versions
																_fogVoidInverted = false;
																_fogAreaCenter = _character;
																_fogAreaDepth = _fogVoidDepth;
																_fogAreaFallOff = _fogVoidFallOff;
																_fogAreaHeight = _fogVoidHeight;
																_fogAreaPosition = _fogVoidPosition;
																_fogAreaRadius = _fogVoidRadius;
																_fogVoidRadius = 0;
																_character = null;
												}

												// Setup fog rendering system
												mainCamera = gameObject.GetComponent<Camera> ();
												_hasCamera = mainCamera != null;
												if (_hasCamera) {
																fogRenderer = this;
																if (mainCamera.depthTextureMode == DepthTextureMode.None) {
																				mainCamera.depthTextureMode = DepthTextureMode.Depth;
																}
												} else {
																if (fogRenderer == null) {
																				mainCamera = Camera.main;
																				if (mainCamera == null)
																								return;
																				fogRenderer = mainCamera.GetComponent<VolumetricFog> ();
																				if (fogRenderer == null) {
																								fogRenderer = mainCamera.gameObject.AddComponent<VolumetricFog> ();
																								fogRenderer.density = 0;
																				}
																} else { 
																				mainCamera = fogRenderer.mainCamera;
																				if (mainCamera == null)
																								mainCamera = fogRenderer.GetComponent<Camera> ();
																}
												}

												// Check proper array initialization
												if (_pointLights.Length < MAX_POINT_LIGHTS)
																_pointLights = new GameObject[MAX_POINT_LIGHTS];
												if (_pointLightColors.Length < MAX_POINT_LIGHTS)
																_pointLightColors = new Color[MAX_POINT_LIGHTS];
												if (_pointLightIntensities.Length < MAX_POINT_LIGHTS)
																_pointLightIntensities = new float[MAX_POINT_LIGHTS];
												if (_pointLightIntensitiesMultiplier.Length < MAX_POINT_LIGHTS)
																_pointLightIntensitiesMultiplier = new float[MAX_POINT_LIGHTS];
												if (_pointLightPositions.Length < MAX_POINT_LIGHTS)
																_pointLightPositions = new Vector3[MAX_POINT_LIGHTS];
												if (_pointLightRanges.Length < MAX_POINT_LIGHTS)
																_pointLightRanges = new float[MAX_POINT_LIGHTS];
												if (_pointLightTrackingPivot == null) {
																_pointLightTrackingPivot = transform;
												}

												// Initialize material
												if (fogMat == null) {
																InitFogMaterial ();

																if (_profile != null) {
																				_profile.Load (this);
																}
												} else {
																UpdateMaterialPropertiesNow ();
												}

												// Register on other Volumetric Fog & Mist renderer if needed
												RegisterWithRenderer ();

												#if UNITY_EDITOR
												if (EditorPrefs.GetInt (VFM_BUILD_HINT) == 0) {
																EditorPrefs.SetInt (VFM_BUILD_HINT, 1);
																EditorUtility.DisplayDialog ("Volumetric Fog & Mist Update: User Action Required", "Please check the 'Build Options' section in Volumetric Fog inspector for shader capabilities and make sure you disable unused features to optimize build size and compilation time.\n\nOtherwise when you build the game it will take a long time or even get stuck during shader compilation.", "Ok");
												}
												#endif
								}


								void OnDestroy () {
												// Unregister on other Volumetric Fog & Mist renderer if needed
												if (!_hasCamera && fogRenderer != null) {
																fogRenderer.UnregisterFogArea (this);
												} else {
																UnregisterFogArea (this);
												}
												if (depthCamObj != null) {
																DestroyImmediate (depthCamObj);
																depthCamObj = null;
												}
												if (adjustedTexture != null) {
																DestroyImmediate (adjustedTexture);
																adjustedTexture = null;
												}
												if (chaosLerpMat != null) {
																DestroyImmediate (chaosLerpMat);
																chaosLerpMat = null;
												}
												if (adjustedChaosTexture != null) {
																DestroyImmediate (adjustedChaosTexture);
																adjustedChaosTexture = null;
												}
												if (blurMat != null) {
																DestroyImmediate (blurMat);
																blurMat = null;
												}
												if (fogMat != null) {
																DestroyImmediate (fogMat);
																fogMat = null;
												}
												CleanUpDepthTexture ();
												DestroySunShadowsDependencies ();
								}


								public void DestroySelf () {
												DestroyRenderComponent<VolumetricFogPreT> ();
												DestroyRenderComponent<VolumetricFogPosT> ();
												DestroyImmediate (this);
								}

								void Start () {
												currentFogAlpha = _alpha;
												currentSkyHazeAlpha = _skyAlpha;
												lastTextureUpdate = Time.time + TIME_BETWEEN_TEXTURE_UPDATES;
												RegisterWithRenderer (); // ensures it's properly registered
												Update ();
								}

								// Check possible alpha transition
								void Update () {

												if (!isPartOfScene)
																return;

												// Updates sun illumination
												if (fogRenderer.sun != null) {
																Vector3 lightDir = fogRenderer.sun.transform.forward;
//																bool mayUpdateTexture = !Application.isPlaying || _sunShadowsBakeMode == SUN_SHADOWS_BAKE_MODE.Realtime || (updatingTextureSlice < 0 && Time.time - lastTextureUpdate >= TIME_BETWEEN_TEXTURE_UPDATES);
																bool mayUpdateTexture = !Application.isPlaying || (updatingTextureSlice < 0 && Time.time - lastTextureUpdate >= TIME_BETWEEN_TEXTURE_UPDATES);
																if (mayUpdateTexture) {
//																				if (_sunShadows && _sunShadowsBakeMode == SUN_SHADOWS_BAKE_MODE.Realtime)
//																								needUpdateTexture = true;
																				if (lightDir != _lightDirection) {
																								_lightDirection = lightDir;
																								needUpdateTexture = true;
																								needUpdateDepthSunTexture = true;
																				}
																				if (sunLight != null) {
																								if (_sunCopyColor && sunLight.color != _lightColor) {
																												_lightColor = sunLight.color;
																												needUpdateTexture = true;
																								}
																								if (sunLightIntensity != sunLight.intensity) {
																												sunLightIntensity = sunLight.intensity;
																												needUpdateTexture = true;
																								}
																				}
																}
												}
												// Check changes in render settings that affect fog colors
												if (!needUpdateTexture) {
																if (_lightingModel == LIGHTING_MODEL.Classic) {
																				if (lastRenderSettingsAmbientIntensity != RenderSettings.ambientIntensity) {
																								needUpdateTexture = true;
																				} else if (lastRenderSettingsAmbientLight != RenderSettings.ambientLight) {
																								needUpdateTexture = true;
																				}
																} else if (_lightingModel == LIGHTING_MODEL.Natural) {
																				if (lastRenderSettingsAmbientLight != RenderSettings.ambientLight) {
																								needUpdateTexture = true;
																				}
																}
												}

												// Check profile transition
												if (transitionProfile) {
																float t = (Time.time - transitionStartTime) / transitionDuration;
																if (t > 1)
																				t = 1;
																VolumetricFogProfile.Lerp (initialProfile, targetProfile, t, this);
																if (t >= 1f) {
																				transitionProfile = false;
																}
												}

												// Check alpha transition
												if (transitionAlpha) {
																if (targetFogAlpha >= 0 || targetSkyHazeAlpha >= 0) {
																				if (targetFogAlpha != currentFogAlpha || targetSkyHazeAlpha != currentSkyHazeAlpha) {
																								if (transitionDuration > 0) {
																												currentFogAlpha = Mathf.Lerp (initialFogAlpha, targetFogAlpha, (Time.time - transitionStartTime) / transitionDuration);
																												currentSkyHazeAlpha = Mathf.Lerp (initialSkyHazeAlpha, targetSkyHazeAlpha, (Time.time - transitionStartTime) / transitionDuration);
																								} else {
																												currentFogAlpha = targetFogAlpha;
																												currentSkyHazeAlpha = targetSkyHazeAlpha;
																												transitionAlpha = false;
																								}
																								fogMat.SetFloat ("_FogAlpha", currentFogAlpha);
																								UpdateSkyColor (currentSkyHazeAlpha);
																				}
																} else if (currentFogAlpha != _alpha || currentSkyHazeAlpha != _skyAlpha) {
																				if (transitionDuration > 0) {
																								currentFogAlpha = Mathf.Lerp (initialFogAlpha, _alpha, (Time.time - transitionStartTime) / transitionDuration);
																								currentSkyHazeAlpha = Mathf.Lerp (initialSkyHazeAlpha, alpha, (Time.time - transitionStartTime) / transitionDuration);
																				} else {
																								currentFogAlpha = _alpha;
																								currentSkyHazeAlpha = _skyAlpha;
																								transitionAlpha = false;
																				}
																				fogMat.SetFloat ("_FogAlpha", currentFogAlpha);
																				UpdateSkyColor (currentSkyHazeAlpha);
																}
												}

												// Check color transition
												if (transitionColor) {
																if (targetColorActive) {
																				if (targetFogColor != currentFogColor) {
																								if (transitionDuration > 0) {
																												currentFogColor = Color.Lerp (initialFogColor, targetFogColor, (Time.time - transitionStartTime) / transitionDuration);
																								} else {
																												currentFogColor = targetFogColor;
																												transitionColor = false;
																								}
																				}
																} else if (currentFogColor != _color) {
																				if (transitionDuration > 0) {
																								currentFogColor = Color.Lerp (initialFogColor, _color, (Time.time - transitionStartTime) / transitionDuration);
																				} else {
																								currentFogColor = _color;
																								transitionColor = false;
																				}
																}
																UpdateMaterialFogColor ();
												}

												// Check color specular transition
												if (transitionSpecularColor) {
																if (targetSpecularColorActive) {
																				if (targetFogSpecularColor != currentFogSpecularColor) {
																								if (transitionDuration > 0) {
																												currentFogSpecularColor = Color.Lerp (initialFogSpecularColor, targetFogSpecularColor, (Time.time - transitionStartTime) / transitionDuration);
																								} else {
																												currentFogSpecularColor = targetFogSpecularColor;
																												transitionSpecularColor = false;
																								}
																								needUpdateTexture = true;
																				}
																} else if (currentFogSpecularColor != _specularColor) {
																				if (transitionDuration > 0) {
																								currentFogSpecularColor = Color.Lerp (initialFogSpecularColor, _specularColor, (Time.time - transitionStartTime) / transitionDuration);
																				} else {
																								currentFogSpecularColor = _specularColor;
																								transitionSpecularColor = false;
																				}
																				needUpdateTexture = true;
																}
												}

												// Check color specular transition
												if (transitionLightColor) {
																if (targetLightColorActive) {
																				if (targetLightColor != currentLightColor) {
																								if (transitionDuration > 0) {
																												currentLightColor = Color.Lerp (initialLightColor, targetLightColor, (Time.time - transitionStartTime) / transitionDuration);
																								} else {
																												currentLightColor = targetLightColor;
																												transitionLightColor = false;
																								}
																								needUpdateTexture = true;
																				}
																} else if (currentLightColor != _lightColor) {
																				if (transitionDuration > 0) {
																								currentLightColor = Color.Lerp (initialLightColor, _lightColor, (Time.time - transitionStartTime) / transitionDuration);
																				} else {
																								currentLightColor = _lightColor;
																								transitionLightColor = false;
																				}
																				needUpdateTexture = true;
																}
												}

												if (_baselineRelativeToCamera) {
																UpdateMaterialHeights ();
												} else if (_character != null) {
																_fogVoidPosition = _character.transform.position;
																UpdateMaterialHeights ();
												}

												#if UNITY_EDITOR
												CheckFogAreaDimensions(); // This is called in OnRenderImage BUT if Game View is not visible, fog area dimensions are not updated and gizmos won't appear with correct size, so we force dimensions check here just in case
												#endif

												if (_fogAreaCenter != null) {
																if (_fogAreaFollowMode == FOG_AREA_FOLLOW_MODE.FullXYZ) {
																				_fogAreaPosition = _fogAreaCenter.transform.position;
																} else { 
																				_fogAreaPosition.x = _fogAreaCenter.transform.position.x;
																				_fogAreaPosition.z = _fogAreaCenter.transform.position.z;
																}
																UpdateMaterialHeights ();
												}

												if (_pointLightTrackingAuto) {
																if (!Application.isPlaying || Time.time - trackPointAutoLastTime > _pointLightTrackingCheckInterval) {
																				trackPointAutoLastTime = Time.time;
																				TrackPointLights ();
																}
												}

												if (updatingTextureSlice >= 0) {
																UpdateTextureColors (adjustedColors, false);
												} else if (needUpdateTexture) {
																UpdateTexture ();
												}

												if (_hasCamera) {
																// Restores fog of war
																if (_fogOfWarEnabled)
																				FogOfWarUpdate ();

																// Autoupdate of fog shadows
																if (_sunShadows && fogRenderer.sun) {
																				CastSunShadows ();
																}

																// Sort fog instances
																int fogInstancesCount = fogInstances.Count;
																if (fogInstancesCount > 1) {
																				Vector3 camPos = mainCamera.transform.position;
																				bool needResort = !Application.isPlaying || Time.time - lastTimeSortInstances >= FOG_INSTANCES_SORT_INTERVAL;
																				if (!needResort) {
																								float camDist = (camPos.x - lastCamPos.x) * (camPos.x - lastCamPos.x) +
																								                (camPos.y - lastCamPos.y) * (camPos.y - lastCamPos.y) +
																								                (camPos.z - lastCamPos.z) * (camPos.z - lastCamPos.z);
																								if (camDist > 625) { // forces udpate every 25 meters
																												lastCamPos = camPos;
																												needResort = true;
																								}
																				}
																				if (needResort) { 
																								lastTimeSortInstances = Time.time;
																								float camX = camPos.x;
																								float camY = camPos.y;
																								float camZ = camPos.z;
																								for (int k = 0; k < fogInstancesCount; k++) {
																												VolumetricFog fogInstance = fogInstances [k];
																												if (fogInstance != null) {
																																Vector3 pos = fogInstance.transform.position;
																																pos.y = fogInstance.currentFogAltitude;
																																float xdx = camX - pos.x;
																																float xdy = camY - pos.y;
																																float distYAxis = xdy * xdy;
																																float xdyh = camY - (pos.y + fogInstance.height);
																																float distYAxis2 = xdyh * xdyh;
																																fogInstance.distanceToCameraYAxis = distYAxis < distYAxis2 ? distYAxis : distYAxis2;
																																float xdz = camZ - pos.z;
																																float distSqr = xdx * xdx + xdy * xdy + xdz * xdz;
																																fogInstance.distanceToCamera = distSqr;

																																Vector3 min = pos - fogInstance.transform.localScale * 0.5f;
																																Vector3 max = pos + fogInstance.transform.localScale * 0.5f;
																																fogInstance.distanceToCameraMin = mainCamera.WorldToScreenPoint (min).z;
																																fogInstance.distanceToCameraMax = mainCamera.WorldToScreenPoint (max).z;
																												}
																								}
																								fogInstances.Sort ((VolumetricFog x, VolumetricFog y) => {
																												if (!x || !y) {
																																return 0;
																												}
																												if (x.fogAreaSortingMode == FOG_AREA_SORTING_MODE.Fixed || y.fogAreaSortingMode == FOG_AREA_SORTING_MODE.Fixed) {
																																if (x.fogAreaRenderOrder < y.fogAreaRenderOrder) {
																																				return -1;
																																} else if (x.fogAreaRenderOrder > y.fogAreaRenderOrder) {
																																				return 1;
																																} else {
																																				return 0;
																																}
																												}
																												bool overlaps = (x.distanceToCameraMin < y.distanceToCameraMin && x.distanceToCameraMax > y.distanceToCameraMax) ||
																												                (y.distanceToCameraMin < x.distanceToCameraMin && y.distanceToCameraMax > x.distanceToCameraMax);
																												if (overlaps || x.fogAreaSortingMode == FOG_AREA_SORTING_MODE.Altitude || y.fogAreaSortingMode == FOG_AREA_SORTING_MODE.Altitude) {
																																if (x.distanceToCameraYAxis < y.distanceToCameraYAxis) {
																																				return 1;
																																} else if (x.distanceToCameraYAxis > y.distanceToCameraYAxis) {
																																				return -1;
																																} else {
																																				return 0;
																																}
																												}

																												if (x.distanceToCamera < y.distanceToCamera) {
																																return 1;
																												} else if (x.distanceToCamera > y.distanceToCamera) {
																																return -1;
																												} else {
																																return 0;
																												}
																								});
																				}
																}
												}
								}

								void OnPreCull () {
												
												if (!enabled || !gameObject.activeSelf || fogMat == null || !_hasCamera || mainCamera == null)
																return;
												
												if (mainCamera.depthTextureMode == DepthTextureMode.None) {
																mainCamera.depthTextureMode = DepthTextureMode.Depth;
												}

												if (_computeDepth) {
																GetTransparentDepth ();
												}

												// Apply chaos
												if (Application.isPlaying && _turbulenceStrength > 0f)
																ApplyChaos ();
								}

								void OnDidApplyAnimationProperties () {   // support for animating property based fields
												shouldUpdateMaterialProperties = true;
								}


								#endregion


								#region Setting up

								bool IsPartOfScene () {
												VolumetricFog[] fogs = FindObjectsOfType<VolumetricFog> ();
												for (int k = 0; k < fogs.Length; k++) {
																if (fogs [k] == this)
																				return true;
												}
												return false;
								}

								void InitFogMaterial () {
												targetFogAlpha = -1;
												targetSkyHazeAlpha = -1;
												_skyColor.a = _skyAlpha;
												updatingTextureSlice = -1;
												fogMat = new Material (Shader.Find ("VolumetricFogAndMist/VolumetricFog"));
												fogMat.hideFlags = HideFlags.DontSave;
												Texture2D noiseTexture = Resources.Load<Texture2D> ("Textures/Noise3");
												noiseColors = noiseTexture.GetPixels ();
												adjustedColors = new Color[noiseColors.Length];
												adjustedTexture = new Texture2D (noiseTexture.width, noiseTexture.height, TextureFormat.RGBA32, false);
												adjustedTexture.hideFlags = HideFlags.DontSave;
												timeOfLastRender = Time.time;

												// Init & apply settings
												UpdateTextureAlpha ();
												UpdateSun ();
												if (_pointLightTrackingAuto) {
																TrackPointLights ();
												} else {
																UpdatePointLights ();
												}
												FogOfWarInit ();
												if (fogOfWarTexture == null)
																FogOfWarUpdateTexture ();

												CopyTransitionValues ();

												UpdatePreset ();

												oldBaselineRelativeCameraY = mainCamera.transform.position.y;

												if (_sunShadows)
																needUpdateDepthSunTexture = true;

								}


								void UpdateRenderComponents () {
												if (!_hasCamera)
																return;
												if (_renderBeforeTransparent) {
																AssignRenderComponent<VolumetricFogPreT> ();
																DestroyRenderComponent<VolumetricFogPosT> ();
												} else if (_transparencyBlendMode == TRANSPARENT_MODE.Blend) {
																AssignRenderComponent<VolumetricFogPreT> ();
																AssignRenderComponent<VolumetricFogPosT> ();
												} else {
																AssignRenderComponent<VolumetricFogPosT> ();
																DestroyRenderComponent<VolumetricFogPreT> ();
												}
								}

								void DestroyRenderComponent<T> () where T : IVolumetricFogRenderComponent {
												T[] cc = GetComponentsInChildren<T> (true);
												for (int k = 0; k < cc.Length; k++) {
																if (cc [k].fog == this || cc [k].fog == null) {
																				cc [k].DestroySelf ();
																}
												}
								}

								void AssignRenderComponent<T> () where T : UnityEngine.Component, IVolumetricFogRenderComponent {
												T[] cc = GetComponentsInChildren<T> (true);
												int freeCC = -1;
												for (int k = 0; k < cc.Length; k++) {
																if (cc [k].fog == this) {
																				return;
																}
																if (cc [k].fog == null)
																				freeCC = k;
												}
												if (freeCC < 0) {
																gameObject.AddComponent<T> ().fog = this;
												} else {
																cc [freeCC].fog = this;
												}
								}

								/// <summary>
								/// Used internally to chain multiple fog areas into the main fog renderer.
								/// </summary>
								void RegisterFogArea (VolumetricFog fog) {
												if (fogInstances.Contains (fog))
																return;
												fogInstances.Add (fog);
								}

								/// <summary>
								/// Used internally to disconnect a non-enabled fog area from the main fog renderer.
								/// </summary>
								void UnregisterFogArea (VolumetricFog fog) {
												if (!fogInstances.Contains (fog))
																return;
												fogInstances.Remove (fog);
								}

								void RegisterWithRenderer () {
												if (!_hasCamera && fogRenderer != null) {
																fogRenderer.RegisterFogArea (this);
												} else {
																RegisterFogArea (this);
												}
												lastTimeSortInstances = 0;
								}


								#endregion

								#region Rendering stuff

								internal void DoOnRenderImage (RenderTexture source, RenderTexture destination) {

												// Check integrity of fog instances list
												int registeredInstancesCount = fogInstances.Count;
												fogRenderInstances.Clear ();
												for (int k = 0; k < registeredInstancesCount; k++) {
																if (fogInstances [k] != null && fogInstances [k].isActiveAndEnabled && fogInstances [k].density > 0)
																				fogRenderInstances.Add (fogInstances [k]);
												}

												_renderingInstancesCount = fogRenderInstances.Count;

												if (_renderingInstancesCount == 0 || mainCamera == null) { // No available instances, cancel any rendering
																Graphics.Blit (source, destination);
																return;
												}

												if (_hasCamera && _density <= 0 && shouldUpdateMaterialProperties) {
																// This fog renderer might require updating its material properties (Sun Shadows, ...) but won't render, so we do it here
																UpdateMaterialPropertiesNow ();
												}

												if (_renderingInstancesCount == 1) {
																// One instance, render directly to destination
																fogRenderInstances [0].DoOnRenderImageInstance (source, destination);
												} else {
																RenderTextureDescriptor rtDesc = source.descriptor;
																rtDesc.depthBufferBits = 0;
																rtDesc.msaaSamples = 1;
																//rtDesc.colorFormat = RenderTextureFormat.ARGB32; <-- causes banding issues with Linear Color space
																RenderTexture rt1 = RenderTexture.GetTemporary (rtDesc);
																fogRenderInstances [0].DoOnRenderImageInstance (source, rt1);
																if (_renderingInstancesCount == 2) { // Two instance, render to intermediate, then to destination
																				fogRenderInstances [1].DoOnRenderImageInstance (rt1, destination);
																}
																if (_renderingInstancesCount >= 3) {
																				// 3 or more instances, render them and finally to destinatio
																				RenderTexture rt2 = RenderTexture.GetTemporary (rtDesc);
																				RenderTexture prev = rt1;
																				RenderTexture next = rt2;
																				int last = _renderingInstancesCount - 1;
																				for (int k = 1; k < last; k++) {
																								if (k > 1)
																												next.DiscardContents ();
																								fogRenderInstances [k].DoOnRenderImageInstance (prev, next);
																								if (next == rt2) {
																												prev = rt2;
																												next = rt1;
																								} else {
																												prev = rt1;
																												next = rt2;
																								}
																				}
																				fogRenderInstances [last].DoOnRenderImageInstance (prev, destination);
																				RenderTexture.ReleaseTemporary (rt2);
																}
																RenderTexture.ReleaseTemporary (rt1);
												}
								}


								internal void DoOnRenderImageInstance (RenderTexture source, RenderTexture destination) {

												if (mainCamera == null || fogMat == null) {
																Graphics.Blit (source, destination);
																return;
												}

												if (!_hasCamera) {
																CheckFogAreaDimensions ();
																if (_sunShadows && !fogRenderer.sunShadows) {
																				fogRenderer.sunShadows = true;	// forces casting shadows on fog renderer
																}
												}

												if (shouldUpdateMaterialProperties) {
																UpdateMaterialPropertiesNow ();
												}

												if (Application.isPlaying) {
																if (_useRealTime) {
																				deltaTime = Time.time - timeOfLastRender;
																				timeOfLastRender = Time.time;
																} else {
																				deltaTime = Time.deltaTime;
																}
																UpdateWindSpeedQuick ();
												}

												if (_hasCamera) {
																#if UNITY_EDITOR
																if (_spsrBehaviour == SPSR_BEHAVIOUR.AutoDetectInEditor) {
																				#if UNITY_5_5_OR_NEWER
																				useSinglePassStereoRenderingMatrix = PlayerSettings.stereoRenderingPath == StereoRenderingPath.SinglePass;
																				#else
																useSinglePassStereoRenderingMatrix = PlayerSettings.singlePassStereoRendering;
																				#endif
																}
																#endif

																if (_spsrBehaviour == SPSR_BEHAVIOUR.ForcedOn && !_useSinglePassStereoRenderingMatrix) {
																				useSinglePassStereoRenderingMatrix = true;
																} else if (_spsrBehaviour == SPSR_BEHAVIOUR.ForcedOff && _useSinglePassStereoRenderingMatrix) {
																				useSinglePassStereoRenderingMatrix = false;
																}
												}
												if (fogRenderer.useSinglePassStereoRenderingMatrix && UnityEngine.XR.XRSettings.enabled) {
																fogMat.SetMatrix ("_ClipToWorld", mainCamera.cameraToWorldMatrix);
												} else {
																fogMat.SetMatrix ("_ClipToWorld", mainCamera.cameraToWorldMatrix * mainCamera.projectionMatrix.inverse);
												}

												if (mainCamera.orthographic)
																fogMat.SetVector ("_ClipDir", mainCamera.transform.forward);

												if (fogRenderer.sun && _lightScatteringEnabled) {
																UpdateScatteringData ();
												}

												// Updates point light illumination
												for (int k = 0; k < MAX_POINT_LIGHTS; k++) {
																Light pointLightComponent = pointLightComponents [k];
																if (pointLightComponent != null) {
																				if (_pointLightColors [k] != pointLightComponent.color) {
																								_pointLightColors [k] = pointLightComponent.color;
																								isDirty = true;
																				}
																				if (_pointLightRanges [k] != pointLightComponent.range) {
																								_pointLightRanges [k] = pointLightComponent.range;
																								isDirty = true;
																				}
																				if (_pointLightPositions [k] != pointLightComponent.transform.position) {
																								_pointLightPositions [k] = pointLightComponent.transform.position;
																								isDirty = true;
																				}
																				if (_pointLightIntensities [k] != pointLightComponent.intensity) {
																								_pointLightIntensities [k] = pointLightComponent.intensity;
																								isDirty = true;
																				}
																}
//																if (_pointLightRanges [k] * _pointLightIntensities [k] > 0) {
																SetMaterialLightData (k, pointLightComponent);
//																}
												}

												// Render fog before transparent objects are drawn and only having into account the depth of opaque objects
												if (_downsampling > 1f) {
																int scaledWidth = GetScaledSize (source.width, _downsampling);
																int scaledHeight = GetScaledSize (source.width, _downsampling);
																RenderTextureDescriptor rtReducedDestinationDesc = source.descriptor;
																rtReducedDestinationDesc.width = scaledWidth;
																rtReducedDestinationDesc.height = scaledHeight;
																rtReducedDestinationDesc.msaaSamples = 1;
																reducedDestination = RenderTexture.GetTemporary (rtReducedDestinationDesc); // scaledWidth, scaledHeight, 0, RenderTextureFormat.ARGB32);
																RenderTextureDescriptor rtReducedDepthDesc = source.descriptor;
																rtReducedDepthDesc.width = scaledWidth;
																rtReducedDepthDesc.height = scaledHeight;
																rtReducedDepthDesc.msaaSamples = 1;

																RenderTextureFormat rtFormat = SystemInfo.SupportsRenderTextureFormat (RenderTextureFormat.RFloat) ? RenderTextureFormat.RFloat : RenderTextureFormat.ARGBFloat;
																rtReducedDestinationDesc.colorFormat = rtFormat;
																RenderTexture reducedDepthTexture = RenderTexture.GetTemporary (rtReducedDestinationDesc); // scaledWidth, scaledHeight, 0, rtFormat);

																if (_fogBlur) {
//																				RenderTexture rtBlur = RenderTexture.GetTemporary (rtReducedDestinationDesc); // scaledWidth, scaledHeight, 0, RenderTextureFormat.ARGB32);
//																				Graphics.Blit (source, rtBlur);
																				SetBlurTexture (source, rtReducedDestinationDesc);
//																				RenderTexture.ReleaseTemporary (rtBlur);
																}

																if (!_edgeImprove || UnityEngine.XR.XRSettings.enabled || SystemInfo.supportedRenderTargetCount < 2) {
																				Graphics.Blit (source, reducedDestination, fogMat, 3);
																				if (_edgeImprove)
																								Graphics.Blit (source, reducedDepthTexture, fogMat, 4);
																} else {
																				fogMat.SetTexture ("_MainTex", source);
																				if (mrt == null)
																								mrt = new RenderBuffer[2];
																				mrt [0] = reducedDestination.colorBuffer;
																				mrt [1] = reducedDepthTexture.colorBuffer;
																				Graphics.SetRenderTarget (mrt, reducedDestination.depthBuffer);
																				Graphics.Blit (null, fogMat, 1);
																}

																fogMat.SetTexture ("_FogDownsampled", reducedDestination);
																fogMat.SetTexture ("_DownsampledDepth", reducedDepthTexture);
																Graphics.Blit (source, destination, fogMat, 2);

																RenderTexture.ReleaseTemporary (reducedDepthTexture);
																RenderTexture.ReleaseTemporary (reducedDestination);
												} else {
																if (_fogBlur) {
																				RenderTextureDescriptor rtReducedDestinationDesc = source.descriptor;
																				rtReducedDestinationDesc.width = 256;
																				rtReducedDestinationDesc.height = 256;

//																				RenderTexture rtBlur = RenderTexture.GetTemporary (rtReducedDestinationDesc); // 256, 256, 0, RenderTextureFormat.ARGB32);
//																				Graphics.Blit (source, rtBlur);
																				SetBlurTexture (source, rtReducedDestinationDesc);
//																				RenderTexture.ReleaseTemporary (rtBlur);
																}
																Graphics.Blit (source, destination, fogMat, 0);
												}
								}

								int GetScaledSize (int size, float factor) {
												size = (int)(size / factor);
												size /= 4;
												if (size < 1)
																size = 1;
												return size * 4;
								}

								#endregion


								#region Transparency support

								void CleanUpDepthTexture () {
												if (depthTexture) {
																RenderTexture.ReleaseTemporary (depthTexture);
																depthTexture = null;
												}
								}

								RenderTextureDescriptor defaultDesc;

								void GetTransparentDepth () {
												CleanUpDepthTexture ();
												//if (defaultDesc.width == 0)
												//				return;
												if (depthCam == null) {
																if (depthCamObj == null) {
																				depthCamObj = GameObject.Find (DEPTH_CAM_NAME);
																}
																if (depthCamObj == null) {
																				depthCamObj = new GameObject (DEPTH_CAM_NAME);
																				depthCam = depthCamObj.AddComponent<Camera> ();
																				depthCam.enabled = false;
																				depthCamObj.hideFlags = HideFlags.HideAndDontSave;
																} else {
																				depthCam = depthCamObj.GetComponent<Camera> ();
																				if (depthCam == null) {
																								DestroyImmediate (depthCamObj);
																								depthCamObj = null;
																								return;
																				}
																}
												}
												depthCam.CopyFrom (mainCamera);
												depthCam.depthTextureMode = DepthTextureMode.None;
												depthTexture = RenderTexture.GetTemporary (mainCamera.pixelWidth, mainCamera.pixelHeight, 24, RenderTextureFormat.Depth, RenderTextureReadWrite.Linear);
												depthCam.backgroundColor = new Color (0, 0, 0, 0);
												depthCam.clearFlags = CameraClearFlags.SolidColor;
												depthCam.cullingMask = _transparencyLayerMask;
												depthCam.targetTexture = depthTexture;
												depthCam.renderingPath = RenderingPath.Forward;
												if (depthShader == null) {
																depthShader = Shader.Find ("VolumetricFogAndMist/CopyDepth");
												}
												if (depthShaderAndTrans == null) {
																depthShaderAndTrans = Shader.Find ("VolumetricFogAndMist/CopyDepthAndTrans");
												}
												switch (_computeDepthScope) {
												case COMPUTE_DEPTH_SCOPE.OnlyTreeBillboards:
																depthCam.RenderWithShader (depthShader, "RenderType");
																break;
												case  COMPUTE_DEPTH_SCOPE.TreeBillboardsAndTransparentObjects:
																depthCam.RenderWithShader (depthShaderAndTrans, "RenderType");
																break;
												default:
																depthCam.RenderWithShader (depthShaderAndTrans, null);
																break;
												}
												Shader.SetGlobalTexture ("_VolumetricFogDepthTexture", depthTexture);
								}

								#endregion

								#region Shadow support

								void CastSunShadows () {

												if (!enabled || !gameObject.activeSelf || fogMat == null)
																return;

												if (_sunShadowsBakeMode == SUN_SHADOWS_BAKE_MODE.Discrete && _sunShadowsRefreshInterval > 0 && Time.time > lastShadowUpdateFrame + _sunShadowsRefreshInterval) {
																needUpdateDepthSunTexture = true;
												}
												if (!Application.isPlaying || needUpdateDepthSunTexture || depthSunTexture == null || !depthSunTexture.IsCreated ()) {
																needUpdateDepthSunTexture = false;
																lastShadowUpdateFrame = Time.time;
																GetSunShadows ();
												}
								}

								void GetSunShadows () {

												if (_sun == null || !_sunShadows)
																return;

												if (depthSunCam == null) {
																if (depthSunCamObj == null) {
																				depthSunCamObj = GameObject.Find (DEPTH_SUN_CAM_NAME);
																}
																if (depthSunCamObj == null) {
																				depthSunCamObj = new GameObject (DEPTH_SUN_CAM_NAME);
																				depthSunCamObj.hideFlags = HideFlags.HideAndDontSave;
																				depthSunCam = depthSunCamObj.AddComponent<Camera> ();
																} else {
																				depthSunCam = depthSunCamObj.GetComponent<Camera> ();
																				if (depthSunCam == null) {
																								DestroyImmediate (depthSunCamObj);
																								depthSunCamObj = null;
																								return;
																				}
																}
																if (depthSunShader == null) {
																				depthSunShader = Shader.Find ("VolumetricFogAndMist/CopySunDepth");
																}
																depthSunCam.SetReplacementShader (depthSunShader, "RenderType");
																depthSunCam.nearClipPlane = 1f;
																depthSunCam.renderingPath = RenderingPath.Forward;
																depthSunCam.orthographic = true;
																depthSunCam.aspect = 1f;
																depthSunCam.backgroundColor = new Color (0, 0, 0.5f, 0);
																depthSunCam.clearFlags = CameraClearFlags.SolidColor;
																depthSunCam.depthTextureMode = DepthTextureMode.None;
												}

												float shadowOrthoSize = _sunShadowsMaxDistance / 0.95f;
												const float farClip = 2000;
												depthSunCam.transform.position = mainCamera.transform.position - _sun.transform.forward * farClip;
												depthSunCam.transform.rotation = _sun.transform.rotation;
												depthSunCam.farClipPlane = farClip * 2f;
												depthSunCam.orthographicSize = shadowOrthoSize;
												if (sunLight != null) {
																depthSunCam.cullingMask = _sunShadowsLayerMask;
												}
												if (depthSunTexture == null) {
																int shadowTexResolution = (int)Mathf.Pow (2, _sunShadowsResolution + 9);
																depthSunTexture = new RenderTexture (shadowTexResolution, shadowTexResolution, 24, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
																depthSunTexture.hideFlags = HideFlags.DontSave;
																depthSunTexture.filterMode = FilterMode.Point;
																depthSunTexture.wrapMode = TextureWrapMode.Clamp;
																depthSunTexture.Create ();
												}
												depthSunCam.targetTexture = depthSunTexture;
												Shader.SetGlobalFloat ("_VF_ShadowBias", _sunShadowsBias);
												if (Application.isPlaying && _sunShadowsBakeMode == SUN_SHADOWS_BAKE_MODE.Realtime) {
																if (!depthSunCam.enabled) {
																				depthSunCam.enabled = true;
																}
												} else {
																if (depthSunCam.enabled) {
																				depthSunCam.enabled = false;
																}
																depthSunCam.Render ();
												}
												Shader.SetGlobalMatrix ("_VolumetricFogSunProj", depthSunCam.projectionMatrix * depthSunCam.worldToCameraMatrix);
												Shader.SetGlobalTexture ("_VolumetricFogSunDepthTexture", depthSunTexture);
												Vector4 swp = depthSunCam.transform.position;
												swp.w = Mathf.Min (_sunShadowsMaxDistance, _maxFogLength);
												Shader.SetGlobalVector ("_VolumetricFogSunWorldPos", swp);
												UpdateSunShadowsData ();
								}

								#endregion

								#region Fog Blur support

								void SetBlurTexture (RenderTexture source, RenderTextureDescriptor desc) {
												if (blurMat == null) {
																Shader blurShader = Shader.Find ("VolumetricFogAndMist/Blur");
																blurMat = new Material (blurShader);
																blurMat.hideFlags = HideFlags.DontSave;
												}
												if (blurMat == null)
																return;

												blurMat.SetFloat ("_BlurDepth", _fogBlurDepth);

												RenderTexture temp1 = RenderTexture.GetTemporary (desc); // source.width, source.height, 0, source.format);
												Graphics.Blit (source, temp1, blurMat, 0);
												RenderTexture temp2 = RenderTexture.GetTemporary (desc); // source.width, source.height, 0, source.format);
												Graphics.Blit (temp1, temp2, blurMat, 1);
												blurMat.SetFloat ("_BlurDepth", _fogBlurDepth * 2f);
												temp1.DiscardContents ();
												Graphics.Blit (temp2, temp1, blurMat, 0);
												temp2.DiscardContents ();
												Graphics.Blit (temp1, temp2, blurMat, 1);
												fogMat.SetTexture ("_BlurTex", temp2);
												RenderTexture.ReleaseTemporary (temp2);
												RenderTexture.ReleaseTemporary (temp1);
								}


								void DestroySunShadowsDependencies () {
												if (depthSunCamObj != null) {
																DestroyImmediate (depthSunCamObj);
																depthSunCamObj = null;
												}
												CleanUpTextureDepthSun ();
								}


								void CleanUpTextureDepthSun () {
												if (depthSunTexture != null) {
																depthSunTexture.Release ();
																depthSunTexture = null;
												}
								}


								#endregion


								#region Settings area

								public string GetCurrentPresetName () {
												return Enum.GetName (typeof(FOG_PRESET), _preset);
								}

								void UpdatePreset () {
												switch (_preset) {
												case FOG_PRESET.Clear:
																_density = 0;
																_fogOfWarEnabled = false;
																_fogVoidRadius = 0;
																break;
												case FOG_PRESET.Mist:
																_skySpeed = 0.3f;
																_skyHaze = 15;
																_skyNoiseStrength = 0.1f;
																_skyAlpha = 0.8f;
																_density = 0.3f;
																_noiseStrength = 0.6f;
																_noiseScale = 1;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0f;
																_height = 6;
																_stepping = 8;
																_steppingNear = 0;
																_alpha = 1;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0.1f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0.12f;
																_speed = 0.01f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.WindyMist:
																_skySpeed = 0.3f;
																_skyHaze = 25;
																_skyNoiseStrength = 0.1f;
																_skyAlpha = 0.85f;
																_density = 0.3f;
																_noiseStrength = 0.5f;
																_noiseScale = 1.15f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0f;
																_height = 6.5f;
																_stepping = 10;
																_steppingNear = 0;
																_alpha = 1;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0.1f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0;
																_speed = 0.15f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.GroundFog:
																_skySpeed = 0.3f;
																_skyHaze = 0;
																_skyNoiseStrength = 0.1f;
																_skyAlpha = 0.85f;
																_density = 0.6f;
																_noiseStrength = 0.479f;
																_noiseScale = 1.15f;
																_noiseSparse = 0f;
																_distance = 5;
																_distanceFallOff = 1f;
																_height = 1.5f;
																_stepping = 8;
																_steppingNear = 0;
																_alpha = 0.95f;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0.2f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0.2f;
																_speed = 0.01f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.FrostedGround:
																_skySpeed = 0;
																_skyHaze = 0;
																_skyNoiseStrength = 0.729f;
																_skyAlpha = 0.55f;
																_density = 1;
																_noiseStrength = 0.164f;
																_noiseScale = 1.81f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 0.5f;
																_stepping = 20;
																_steppingNear = 50;
																_alpha = 0.97f;
																_color = new Color (0.546f, 0.648f, 0.710f, 1);
																_skyColor = _color;
																_specularColor = new Color (0.792f, 0.792f, 0.792f, 1);
																_specularIntensity = 1;
																_specularThreshold = 0.866f;
																_lightColor = new Color (0.972f, 0.972f, 0.972f, 1);
																_lightIntensity = 0.743f;
																_speed = 0;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.FoggyLake:
																_skySpeed = 0.3f;
																_skyHaze = 40;
																_skyNoiseStrength = 0.574f;
																_skyAlpha = 0.827f;
																_density = 1;
																_noiseStrength = 0.03f;
																_noiseScale = 5.77f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 4;
																_stepping = 6;
																_steppingNear = 14.4f;
																_alpha = 1;
																_color = new Color (0, 0.960f, 1, 1);
																_skyColor = _color;
																_specularColor = Color.white;
																_lightColor = Color.white;
																_specularIntensity = 0.861f;
																_specularThreshold = 0.907f;
																_lightIntensity = 0.126f;
																_speed = 0;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.LowClouds:
																_skySpeed = 0.3f;
																_skyHaze = 60;
																_skyNoiseStrength = 1f;
																_skyAlpha = 0.96f;
																_density = 1;
																_noiseStrength = 0.7f;
																_noiseScale = 1;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 4f;
																_stepping = 12;
																_steppingNear = 0;
																_alpha = 0.98f;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0.15f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0.15f;
																_speed = 0.008f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.SeaClouds:
																_skySpeed = 0.3f;
																_skyHaze = 60;
																_skyNoiseStrength = 1f;
																_skyAlpha = 0.96f;
																_density = 1;
																_noiseStrength = 1;
																_noiseScale = 1.5f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 12.4f;
																_stepping = 6;
																_alpha = 0.98f;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0.259f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0.15f;
																_speed = 0.008f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.Fog:
																_skySpeed = 0.3f;
																_skyHaze = 144;
																_skyNoiseStrength = 0.7f;
																_skyAlpha = 0.9f;
																_density = 0.35f;
																_noiseStrength = 0.3f;
																_noiseScale = 1;
																_noiseSparse = 0f;
																_distance = 20;
																_distanceFallOff = 0.7f;
																_height = 8;
																_stepping = 8;
																_steppingNear = 0;
																_alpha = 0.97f;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0;
																_speed = 0.05f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.HeavyFog:
																_skySpeed = 0.05f;
																_skyHaze = 500;
																_skyNoiseStrength = 0.96f;
																_skyAlpha = 1;
																_density = 0.35f;
																_noiseStrength = 0.1f;
																_noiseScale = 1;
																_noiseSparse = 0f;
																_distance = 20;
																_distanceFallOff = 0.8f;
																_height = 18;
																_stepping = 6;
																_steppingNear = 0;
																_alpha = 1;
																_color = new Color (0.91f, 0.91f, 0.91f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0;
																_speed = 0.015f;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.SandStorm1:
																_skySpeed = 0.35f;
																_skyHaze = 388;
																_skyNoiseStrength = 0.847f;
																_skyAlpha = 1;
																_density = 0.487f;
																_noiseStrength = 0.758f;
																_noiseScale = 1.71f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 16;
																_stepping = 6;
																_steppingNear = 0;
																_alpha = 1;
																_color = new Color (0.505f, 0.505f, 0.505f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0;
																_speed = 0.3f;
																_windDirection = Vector3.right;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.Smoke:
																_skySpeed = 0.109f;
																_skyHaze = 10;
																_skyNoiseStrength = 0.119f;
																_skyAlpha = 1;
																_density = 1;
																_noiseStrength = 0.767f;
																_noiseScale = 1.6f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0f;
																_height = 8;
																_stepping = 12;
																_steppingNear = 25;
																_alpha = 1;
																_color = new Color (0.125f, 0.125f, 0.125f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 1, 1);
																_specularIntensity = 0.575f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 1;
																_speed = 0.075f;
																_windDirection = Vector3.right;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_baselineHeight += 8f;
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.ToxicSwamp:
																_skySpeed = 0.062f;
																_skyHaze = 22;
																_skyNoiseStrength = 0.694f;
																_skyAlpha = 1;
																_density = 1;
																_noiseStrength = 1;
																_noiseScale = 1;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 2.5f;
																_stepping = 20;
																_steppingNear = 50;
																_alpha = 0.95f;
																_color = new Color (0.0238f, 0.175f, 0.109f, 1);
																_skyColor = _color;
																_specularColor = new Color (0.593f, 0.625f, 0.207f, 1);
																_specularIntensity = 0.735f;
																_specularThreshold = 0.6f;
																_lightColor = new Color (0.730f, 0.746f, 0.511f, 1);
																_lightIntensity = 0.492f;
																_speed = 0.0003f;
																_windDirection = Vector3.right;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.SandStorm2:
																_skySpeed = 0;
																_skyHaze = 0;
																_skyNoiseStrength = 0.729f;
																_skyAlpha = 0.55f;
																_density = 0.545f;
																_noiseStrength = 1;
																_noiseScale = 3;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 12;
																_stepping = 5;
																_steppingNear = 19.6f;
																_alpha = 0.96f;
																_color = new Color (0.609f, 0.609f, 0.609f, 1);
																_skyColor = _color;
																_specularColor = new Color (0.589f, 0.621f, 0.207f, 1);
																_specularIntensity = 0.505f;
																_specularThreshold = 0.6f;
																_lightColor = new Color (0.726f, 0.742f, 0.507f, 1);
																_lightIntensity = 0.581f;
																_speed = 0.168f;
																_windDirection = Vector3.right;
																_downsampling = 1;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																_fogVoidRadius = 0;
																CopyTransitionValues ();
																break;
												case FOG_PRESET.WorldEdge:
																_skySpeed = 0.3f;
																_skyHaze = 60;
																_skyNoiseStrength = 1f;
																_skyAlpha = 0.96f;
																_density = 1;
																_noiseStrength = 1;
																_noiseScale = 3f;
																_noiseSparse = 0f;
																_distance = 0;
																_distanceFallOff = 0;
																_height = 20f;
																_stepping = 6;
																_alpha = 0.98f;
																_color = new Color (0.89f, 0.89f, 0.89f, 1);
																_skyColor = _color;
																_specularColor = new Color (1, 1, 0.8f, 1);
																_specularIntensity = 0.259f;
																_specularThreshold = 0.6f;
																_lightColor = Color.white;
																_lightIntensity = 0.15f;
																_speed = 0.03f;
																_downsampling = 2;
																_baselineRelativeToCamera = false;
																CheckWaterLevel (false);
																Terrain terrain = GetActiveTerrain ();
																if (terrain != null) {
																				_fogVoidPosition = terrain.transform.position + terrain.terrainData.size * 0.5f;
																				_fogVoidRadius = terrain.terrainData.size.x * 0.45f;
																				_fogVoidHeight = terrain.terrainData.size.y;
																				_fogVoidDepth = terrain.terrainData.size.z * 0.45f;
																				_fogVoidFallOff = 6f;
																				_fogAreaRadius = 0;
																				_character = null;
																				_fogAreaCenter = null;
																				float terrainSize = terrain.terrainData.size.x;
																				if (mainCamera.farClipPlane < terrainSize)
																								mainCamera.farClipPlane = terrainSize;
																				if (_maxFogLength < terrainSize * 0.6f)
																								_maxFogLength = terrainSize * 0.6f;
																}
																CopyTransitionValues ();
																break;
												}
												FogOfWarUpdateTexture ();
												UpdateMaterialProperties ();
												UpdateRenderComponents ();
												UpdateTextureAlpha ();
												UpdateTexture ();
								}

								public void CheckWaterLevel (bool baseZero) {

												if (mainCamera == null)
																return;

												if (_baselineHeight > mainCamera.transform.position.y || baseZero)
																_baselineHeight = 0;

#if GAIA_PRESENT
			GaiaSceneInfo sceneInfo = GaiaSceneInfo.GetSceneInfo();
			_baselineHeight = sceneInfo.m_seaLevel;
#else

												// Finds water
												GameObject water = GameObject.Find ("Water");
												if (water == null) {
																GameObject[] gos = GameObject.FindObjectsOfType<GameObject> ();
																for (int k = 0; k < gos.Length; k++) {
																				if (gos [k] != null && gos [k].layer == 4) {
																								water = gos [k];
																								break;
																				}
																}
												}
												if (water != null) {
																_renderBeforeTransparent = false;  // adds compatibility with water
																if (_baselineHeight < water.transform.position.y)
																				_baselineHeight = water.transform.position.y;
												}
												#endif
												UpdateMaterialHeights ();
								}


								/// <summary>
								/// Get the currently active terrain - or any terrain
								/// </summary>
								/// <returns>A terrain if there is one</returns>
								public static Terrain GetActiveTerrain () {
												//Grab active terrain if we can
												Terrain terrain = Terrain.activeTerrain;
												if (terrain != null && terrain.isActiveAndEnabled) {
																return terrain;
												}

												//Then check rest of terrains
												for (int idx = 0; idx < Terrain.activeTerrains.Length; idx++) {
																terrain = Terrain.activeTerrains [idx];
																if (terrain != null && terrain.isActiveAndEnabled) {
																				return terrain;
																}
												}
												return null;
								}

								void UpdateMaterialFogColor () {
												fogMat.SetColor ("_Color", currentFogColor * 2.0f);
								}

								void UpdateMaterialHeights () {
												currentFogAltitude = _baselineHeight;
												Vector3 adjustedFogAreaPosition = _fogAreaPosition;
												if (_fogAreaRadius > 0) {
																if (_fogAreaCenter != null && _fogAreaFollowMode == FOG_AREA_FOLLOW_MODE.FullXYZ) {
																				currentFogAltitude += _fogAreaCenter.transform.position.y;
																}
																adjustedFogAreaPosition.y = 0; // baseHeight;
												}
												if (_baselineRelativeToCamera && !_useXYPlane) {
																oldBaselineRelativeCameraY += (mainCamera.transform.position.y - oldBaselineRelativeCameraY) * Mathf.Clamp01 (1.001f - _baselineRelativeToCameraDelay);
																currentFogAltitude += oldBaselineRelativeCameraY - 1f;
												}
												float scale = 0.01f / _noiseScale;
												fogMat.SetVector ("_FogData", new Vector4 (currentFogAltitude, _height, 1.0f / _density, scale));
												fogMat.SetFloat ("_FogSkyHaze", _skyHaze + currentFogAltitude);
												Vector3 v = _fogVoidPosition - currentFogAltitude * Vector3.up;
												fogMat.SetVector ("_FogVoidPosition", v);
												fogMat.SetVector ("_FogAreaPosition", adjustedFogAreaPosition);
								}


								void UpdateMaterialProperties () {
												shouldUpdateMaterialProperties = true;
												if (!Application.isPlaying)
																UpdateMaterialPropertiesNow ();
								}

								void UpdateMaterialPropertiesNow () {
												if (fogMat == null)
																return;

												shouldUpdateMaterialProperties = false;

#if UNITY_EDITOR
#if UNITY_5_5_OR_NEWER
												_useSinglePassStereoRenderingMatrix = PlayerSettings.stereoRenderingPath == StereoRenderingPath.SinglePass;
#elif UNITY_5_4_OR_NEWER
			_useSinglePassStereoRenderingMatrix = PlayerSettings.singlePassStereoRendering;
#endif
#endif
												UpdateSkyColor (_skyAlpha);

												Vector4 fogStepping = new Vector4 (1.0f / (_stepping + 1.0f), 1 / (1 + _steppingNear), _edgeThreshold, _dithering ? _ditherStrength * 0.1f : 0f);
												fogMat.SetFloat ("_Jitter", _jitterStrength);
												if (!_edgeImprove)
																fogStepping.z = 0;
												fogMat.SetVector ("_FogStepping", fogStepping);
												fogMat.SetFloat ("_FogAlpha", currentFogAlpha);
												UpdateMaterialHeights ();
												float scale = 0.01f / _noiseScale;
												float maxFogLengthFallOff = _maxFogLength * _maxFogLengthFallOff + 1.0f;
												fogMat.SetVector ("_FogDistance", new Vector4 (scale * scale * _distance * _distance, (_distanceFallOff * _distanceFallOff + 0.1f), _maxFogLength, maxFogLengthFallOff)); //, _distance * (1.0f - _distanceFallOff)));
												UpdateMaterialFogColor ();

												// enable shader options
												if (shaderKeywords == null) {
																shaderKeywords = new List<string> ();
												} else {
																shaderKeywords.Clear ();
												}
												if (_distance > 0)
																shaderKeywords.Add (SKW_FOG_DISTANCE_ON);
												if (_fogVoidRadius > 0 && _fogVoidFallOff > 0) {
																Vector4 voidData = new Vector4 (1.0f / (1.0f + _fogVoidRadius), 1.0f / (1.0f + _fogVoidHeight), 1.0f / (1.0f + _fogVoidDepth), _fogVoidFallOff);
																if (_fogVoidTopology == FOG_VOID_TOPOLOGY.Box) {
																				shaderKeywords.Add (SKW_FOG_VOID_BOX);
																} else {
																				shaderKeywords.Add (SKW_FOG_VOID_SPHERE);
																}
																fogMat.SetVector ("_FogVoidData", voidData);
												}
												if (_fogAreaRadius > 0 && _fogAreaFallOff > 0) {
																Vector4 areaData = new Vector4 (1.0f / (0.0001f + _fogAreaRadius), 1.0f / (0.0001f + _fogAreaHeight), 1.0f / (0.0001f + _fogAreaDepth), _fogAreaFallOff);
																if (_fogAreaTopology == FOG_AREA_TOPOLOGY.Box) {
																				shaderKeywords.Add (SKW_FOG_AREA_BOX);
																} else {
																				shaderKeywords.Add (SKW_FOG_AREA_SPHERE);
																				areaData.y = _fogAreaRadius * _fogAreaRadius;
																				areaData.x /= scale;
																				areaData.z /= scale;
																}
																fogMat.SetVector ("_FogAreaData", areaData);
												}
												if (_skyHaze > 0 && _skyAlpha > 0 && !_useXYPlane) {
																shaderKeywords.Add (SKW_FOG_HAZE_ON);
												}
												if (_fogOfWarEnabled) {
																shaderKeywords.Add (SKW_FOG_OF_WAR_ON);
																fogMat.SetTexture ("_FogOfWar", fogOfWarTexture);
																fogMat.SetVector ("_FogOfWarCenter", _fogOfWarCenter);
																fogMat.SetVector ("_FogOfWarSize", _fogOfWarSize);
																Vector3 ca = _fogOfWarCenter - 0.5f * _fogOfWarSize;
																if (_useXYPlane) {
																				fogMat.SetVector ("_FogOfWarCenterAdjusted", new Vector3 (ca.x / _fogOfWarSize.x, ca.y / (_fogOfWarSize.y + 0.0001f), 1f));
																} else {
																				fogMat.SetVector ("_FogOfWarCenterAdjusted", new Vector3 (ca.x / _fogOfWarSize.x, 1f, ca.z / (_fogOfWarSize.z + 0.0001f)));
																}
												}
												int pointLightCount = -1;
												for (int k = 0; k < MAX_POINT_LIGHTS; k++) {
																if (_pointLights [k] != null || _pointLightRanges [k] * _pointLightIntensities [k] > 0) {
																				pointLightCount = k;
																}
												}
												if (pointLightCount >= 0) {
																shaderKeywords.Add ("FOG_POINT_LIGHT" + pointLightCount.ToString ());
												}
												if (fogRenderer.sun) {
																UpdateScatteringData ();
																if (_lightScatteringEnabled) {
																				if (_lightScatteringExposure > 0) {
																								shaderKeywords.Add (SKW_LIGHT_SCATTERING);
																				}
																}
																if (_sunShadows) {
																				shaderKeywords.Add (SKW_SUN_SHADOWS);
																				UpdateSunShadowsData ();
																}
												}
												if (_fogBlur) {
																shaderKeywords.Add (SKW_FOG_BLUR);
																fogMat.SetFloat ("_FogBlurDepth", _fogBlurDepth);
												}

												if (_useXYPlane) {
																shaderKeywords.Add (SKW_FOG_USE_XY_PLANE);
												}

												if (fogRenderer.computeDepth) {
																shaderKeywords.Add (SKW_FOG_COMPUTE_DEPTH);
												}
												fogMat.shaderKeywords = shaderKeywords.ToArray ();

												if (_computeDepth && _computeDepthScope == COMPUTE_DEPTH_SCOPE.TreeBillboardsAndTransparentObjects) {
																Shader.SetGlobalFloat ("_VFM_CutOff", _transparencyCutOff);
												}
								}

								void UpdateSunShadowsData () {
												if (_sun == null || !_sunShadows || fogMat == null)
																return;
												float shadowStrength = _sunShadowsStrength * Mathf.Clamp01 ((-_sun.transform.forward.y) * 10f);
												if (shadowStrength < 0) {
																shadowStrength = 0;
												}
												if (shadowStrength > 0 && !fogMat.IsKeywordEnabled (SKW_SUN_SHADOWS)) {
																fogMat.EnableKeyword (SKW_SUN_SHADOWS);
												} else if (shadowStrength <= 0 && fogMat.IsKeywordEnabled (SKW_SUN_SHADOWS)) {
																fogMat.DisableKeyword (SKW_SUN_SHADOWS);
												}
												if (_hasCamera) {
																Shader.SetGlobalVector ("_VolumetricFogSunShadowsData", new Vector4 (shadowStrength, _sunShadowsJitterStrength, _sunShadowsCancellation, 0));
												}
								}

								void UpdateWindSpeedQuick () {
												if (fogMat == null)
																return;
												// fog speed
												float scale = 0.01f / _noiseScale;
												windSpeedAcum += deltaTime * _windDirection * _speed / scale;
												fogMat.SetVector ("_FogWindDir", windSpeedAcum);
												// sky speed
												skyHazeSpeedAcum += deltaTime * _skySpeed / 20f;
												fogMat.SetVector ("_FogSkyData", new Vector4 (_skyHaze, _skyNoiseStrength, skyHazeSpeedAcum, _skyDepth));
								}

								void UpdateScatteringData () {
												Vector3 viewportPos = mainCamera.WorldToViewportPoint (fogRenderer.sun.transform.forward * 10000f);
												if (viewportPos.z < 0) {
																Vector2 screenSunPos = new Vector2 (viewportPos.x, viewportPos.y);
																float night = Mathf.Clamp01 (1.0f - _lightDirection.y);
																if (screenSunPos != oldSunPos) {
																				oldSunPos = screenSunPos;
																				fogMat.SetVector ("_SunPosition", screenSunPos);
																				sunFade = Mathf.SmoothStep (1, 0, (screenSunPos - Vector2.one * 0.5f).magnitude * 0.5f) * night;
																}
																if (_lightScatteringEnabled && !fogMat.IsKeywordEnabled (SKW_LIGHT_SCATTERING)) {
																				fogMat.EnableKeyword (SKW_LIGHT_SCATTERING);
																}
																float intensity = _lightScatteringExposure * sunFade;
																fogMat.SetVector ("_FogScatteringData", new Vector4 (_lightScatteringSpread / _lightScatteringSamples, intensity > 0 ? _lightScatteringSamples : 0, intensity, _lightScatteringWeight / (float)_lightScatteringSamples));
																fogMat.SetVector ("_FogScatteringData2", new Vector4 (_lightScatteringIllumination, _lightScatteringDecay, _lightScatteringJittering, _lightScatteringEnabled ? 1.2f * _lightScatteringDiffusion * night * sunLightIntensity : 0));
																fogMat.SetVector ("_SunDir", -_lightDirection);
																fogMat.SetColor ("_SunColor", _lightColor);
												} else {
																if (fogMat.IsKeywordEnabled (SKW_LIGHT_SCATTERING)) {
																				fogMat.DisableKeyword (SKW_LIGHT_SCATTERING);
																}
												}
								}

								void UpdateSun () {
												if (fogRenderer.sun != null) {
																sunLight = fogRenderer.sun.GetComponent<Light> ();
												} else {
																sunLight = null;
												}
								}

								void UpdateSkyColor (float alpha) {
												if (fogMat == null)
																return;
												float skyIntensity = (_lightIntensity + sunLightIntensity) * Mathf.Clamp01 (1.0f - _lightDirection.y);
												if (skyIntensity < 0)
																skyIntensity = 0;
												else if (skyIntensity > 1f)
																skyIntensity = 1f;
												_skyColor.a = alpha;
												Color skyColorAdj = skyIntensity * _skyColor;
												fogMat.SetColor ("_FogSkyColor", skyColorAdj);
								}

								void UpdatePointLights () {
												for (int k = 0; k < _pointLights.Length; k++) {
																GameObject pointLight = _pointLights [k];
																if (pointLight != null) {
																				pointLightComponents [k] = pointLight.GetComponent<Light> ();
																} else {
																				pointLightComponents [k] = null;
																}
												}
								}

								#endregion

								#region Noise texture work

								void UpdateTextureAlpha () {
												// Precompute fog height into alpha channel
												if (adjustedColors == null)
																return;
												float fogNoise = Mathf.Clamp (_noiseStrength, 0, 0.95f);     // clamped to prevent flat fog on top
												for (int k = 0; k < adjustedColors.Length; k++) {
																float t = 1.0f - (_noiseSparse + noiseColors [k].b) * fogNoise;
																t *= _density * _noiseFinalMultiplier;
																if (t < 0)
																				t = 0;
																else if (t > 1)
																				t = 1f;
																adjustedColors [k].a = t;
												}
												hasChangeAdjustedColorsAlpha = true;
								}



								void UpdateTexture () {
												if (fogMat == null)
																return;

												// Check Sun position
												UpdateSkyColor (_skyAlpha);

												// Precompute light color
												float fogIntensity = (_lightIntensity + sunLightIntensity);
												if (!_useXYPlane) {
																fogIntensity *= Mathf.Clamp01 (1.0f - _lightDirection.y * 2.0f); // simulates sunset
												}
												switch (_lightingModel) {
												default: 
																Color ambientMultiplied = RenderSettings.ambientLight * RenderSettings.ambientIntensity;
																updatingTextureLightColor = Color.Lerp (ambientMultiplied, currentLightColor * fogIntensity, fogIntensity);
																lastRenderSettingsAmbientLight = RenderSettings.ambientLight;
																lastRenderSettingsAmbientIntensity = RenderSettings.ambientIntensity;
																break;
												case LIGHTING_MODEL.Natural:
																Color ambient = RenderSettings.ambientLight;
																lastRenderSettingsAmbientLight = RenderSettings.ambientLight;
																updatingTextureLightColor = Color.Lerp (ambient, currentLightColor * fogIntensity + ambient, _lightIntensity);
																break;
												case LIGHTING_MODEL.SingleLight:
																updatingTextureLightColor = Color.Lerp (Color.black, currentLightColor * fogIntensity, _lightIntensity);
																break;
												}
												if (Application.isPlaying) { // && !hasChangeAdjustedColorsAlpha) {
																updatingTextureSlice = 0;
												} else {
																updatingTextureSlice = -1;
												}
												UpdateTextureColors (adjustedColors, hasChangeAdjustedColorsAlpha);
												needUpdateTexture = false;
								}

								void UpdateTextureColors (Color[] colors, bool forceUpdateEntireTexture) {
												Vector3 nlight;
												int nz, disp;
												float nyspec;
												float spec = 1.0001f - _specularThreshold;
												int tw = adjustedTexture.width;
												nlight = new Vector3 (-_lightDirection.x, 0, -_lightDirection.z).normalized * 0.3f;
												nlight.y = _lightDirection.y > 0 ? Mathf.Clamp01 (1.0f - _lightDirection.y) : 1.0f - Mathf.Clamp01 (-_lightDirection.y);
												nz = Mathf.FloorToInt (nlight.z * tw) * tw;
												disp = (int)(nz + nlight.x * tw) + colors.Length;
												nyspec = nlight.y / spec;
												Color specularColor = currentFogSpecularColor * (1.0f + _specularIntensity) * _specularIntensity;
												bool hasChanged = false;
												if (updatingTextureSlice >= 1 || forceUpdateEntireTexture)
																hasChanged = true;
												float lcr = updatingTextureLightColor.r * 0.5f;
												float lcg = updatingTextureLightColor.g * 0.5f;
												float lcb = updatingTextureLightColor.b * 0.5f;
												float scr = specularColor.r * 0.5f;
												float scg = specularColor.g * 0.5f;
												float scb = specularColor.b * 0.5f;

												int count = colors.Length;
												int k0 = 0;
												int k1 = count;
												if (updatingTextureSlice >= 0) {
																if (updatingTextureSlice > _updateTextureSpread) {
																				// detected change of configuration amid texture updates
																				updatingTextureSlice = -1;
																				needUpdateTexture = true;
																				return;
																}
																k0 = count * updatingTextureSlice / _updateTextureSpread;
																k1 = count * (updatingTextureSlice + 1) / _updateTextureSpread;
												}
												int z = 0;
												for (int k = k0; k < k1; k++) {
																int indexg = (k + disp) % count;
																float a = colors [k].a;
																float r = (a - colors [indexg].a) * nyspec;
																if (r < 0f)
																				r = 0f;
																else if (r > 1f)
																				r = 1f;
																float cor = lcr + scr * r;
																float cog = lcg + scg * r;
																float cob = lcb + scb * r;
																if (!hasChanged) {
																				if (z++ < 100) {
																								if (cor != colors [k].r || cog != colors [k].g || cob != colors [k].b) {
																												hasChanged = true;
																								} 
																				} else if (!hasChanged) {
																								break;
																				}
																}
																colors [k].r = cor;
																colors [k].g = cog;
																colors [k].b = cob;
												}

												bool hasNewTextureData = forceUpdateEntireTexture;
												if (hasChanged) {
																if (updatingTextureSlice >= 0) {
																				updatingTextureSlice++;
																				if (updatingTextureSlice >= _updateTextureSpread) {
																								updatingTextureSlice = -1;
																								hasNewTextureData = true;
																				}
																} else {
																				hasNewTextureData = true;
																}
												} else {
																updatingTextureSlice = -1;
												}

												if (hasNewTextureData) {
																if (Application.isPlaying && _turbulenceStrength > 0f && adjustedChaosTexture) {
																				adjustedChaosTexture.SetPixels (adjustedColors);
																				adjustedChaosTexture.Apply ();
																} else {
																				adjustedTexture.SetPixels (adjustedColors);
																				adjustedTexture.Apply ();
																				fogMat.SetTexture ("_NoiseTex", adjustedTexture);
																}
																lastTextureUpdate = Time.time;
												}
								}

								void ApplyChaos () {

												if (!adjustedTexture)
																return;

												if (chaosLerpMat == null) {
																Shader chaosLerp = Shader.Find ("VolumetricFogAndMist/Chaos Lerp");
																chaosLerpMat = new Material (chaosLerp);
																chaosLerpMat.hideFlags = HideFlags.DontSave;
												}
												turbAcum += deltaTime * _turbulenceStrength;
												chaosLerpMat.SetFloat ("_Amount", turbAcum);

												if (!adjustedChaosTexture) {
																adjustedChaosTexture = Instantiate (adjustedTexture) as Texture2D;
																adjustedChaosTexture.hideFlags = HideFlags.DontSave;
												}

												RenderTexture rtAdjusted = RenderTexture.GetTemporary (adjustedTexture.width, adjustedTexture.height, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
												rtAdjusted.wrapMode = TextureWrapMode.Repeat;
												Graphics.Blit (adjustedChaosTexture, rtAdjusted, chaosLerpMat);
												fogMat.SetTexture ("_NoiseTex", rtAdjusted);
												RenderTexture.ReleaseTemporary (rtAdjusted);
								}



								#endregion


								#region Fog Volume

								void CopyTransitionValues () {
												currentFogAlpha = _alpha;
												currentSkyHazeAlpha = _skyAlpha;
												currentFogColor = _color;
												currentFogSpecularColor = _specularColor;
												currentLightColor = _lightColor;
								}


								public void SetTargetProfile (VolumetricFogProfile targetProfile, float duration) {
												if (!_useFogVolumes)
																return;
												this.initialProfile = ScriptableObject.CreateInstance<VolumetricFogProfile> ();
												this.initialProfile.Save (this);
												this.targetProfile = targetProfile;
												this.transitionDuration = duration;
												this.transitionStartTime = Time.time;
												this.transitionProfile = true;
								}

								public void ClearTargetProfile (float duration) {
												SetTargetProfile (initialProfile, duration);
								}


								public void SetTargetAlpha (float newFogAlpha, float newSkyHazeAlpha, float duration) {
												if (!_useFogVolumes)
																return;
												this.initialFogAlpha = currentFogAlpha;
												this.initialSkyHazeAlpha = currentSkyHazeAlpha;
												this.targetFogAlpha = newFogAlpha;
												this.targetSkyHazeAlpha = newSkyHazeAlpha;
												this.transitionDuration = duration;
												this.transitionStartTime = Time.time;
												this.transitionAlpha = true;
								}

								public void ClearTargetAlpha (float duration) {
												SetTargetAlpha (-1, -1, duration);
								}

								public void SetTargetColor (Color newColor, float duration) {
												if (!useFogVolumes)
																return;
												this.initialFogColor = currentFogColor;
												this.targetFogColor = newColor;
												this.transitionDuration = duration;
												this.transitionStartTime = Time.time;
												this.transitionColor = true;
												this.targetColorActive = true;
								}

								public void ClearTargetColor (float duration) {
												SetTargetColor (_color, duration);
												this.targetColorActive = false;
								}

								public void SetTargetSpecularColor (Color newSpecularColor, float duration) {
												if (!useFogVolumes)
																return;
												this.initialFogSpecularColor = currentFogSpecularColor;
												this.targetFogSpecularColor = newSpecularColor;
												this.transitionDuration = duration;
												this.transitionStartTime = Time.time;
												this.transitionSpecularColor = true;
												this.targetSpecularColorActive = true;
								}

								public void ClearTargetSpecularColor (float duration) {
												SetTargetSpecularColor (_specularColor, duration);
												this.targetSpecularColorActive = false;
								}


								public void SetTargetLightColor (Color newLightColor, float duration) {
												if (!useFogVolumes)
																return;
												this._sunCopyColor = false;
												this.initialLightColor = currentLightColor;
												this.targetLightColor = newLightColor;
												this.transitionDuration = duration;
												this.transitionStartTime = Time.time;
												this.transitionLightColor = true;
												this.targetLightColorActive = true;
								}

								public void ClearTargetLightColor (float duration) {
												SetTargetLightColor (_lightColor, duration);
												this.targetLightColorActive = false;
								}


								#endregion


								#region Point Light functions

								static string[] pointLightPositionUniformNames = new string[] {
												"_FogPointLightPosition0",
												"_FogPointLightPosition1",
												"_FogPointLightPosition2",
												"_FogPointLightPosition3",
												"_FogPointLightPosition4",
												"_FogPointLightPosition5"
								};
								static string[] pointLightColorUniformNames = new string[] {
												"_FogPointLightColor0",
												"_FogPointLightColor1",
												"_FogPointLightColor2",
												"_FogPointLightColor3",
												"_FogPointLightColor4",
												"_FogPointLightColor5"
								};

								void SetMaterialLightData (int k, Light lightComponent) {
												Vector3 pos = _pointLightPositions [k];
												pos.y -= _baselineHeight;
												float range = _pointLightRanges [k] * _pointLightInscattering / 25f; // note: 25 comes from Unity point light attenuation equation
												float multiplier = _pointLightIntensity * _pointLightIntensities [k] * _pointLightIntensitiesMultiplier [k];
												Vector4 color = new Vector4 (_pointLightColors [k].r * multiplier, _pointLightColors [k].g * multiplier, _pointLightColors [k].b * multiplier, range);
												fogMat.SetVector (pointLightPositionUniformNames [k], pos);
												fogMat.SetVector (pointLightColorUniformNames [k], color);
								}

								public GameObject GetPointLight (int index) {
												if (index < 0 || index > _pointLights.Length)
																return null;
												return _pointLights [index];
								}

								public void SetPointLight (int index, GameObject pointLight) {
												if (index < 0 || index > _pointLights.Length)
																return;
												if (_pointLights [index] != pointLight) {
																_pointLights [index] = pointLight;
																UpdatePointLights ();
																UpdateMaterialProperties ();
																isDirty = true;
												}
								}

								public float GetPointLightRange (int index) {
												if (index < 0 || index > _pointLightRanges.Length)
																return 0;
												return _pointLightRanges [index];
								}

								public void SetPointLightRange (int index, float range) {
												if (index < 0 || index > _pointLightRanges.Length)
																return;
												if (range != _pointLightRanges [index]) {
																_pointLightRanges [index] = range;
																UpdateMaterialProperties ();
																isDirty = true;
												}
								}

								public float GetPointLightIntensity (int index) {
												if (index < 0 || index > _pointLightIntensities.Length)
																return 0;
												return _pointLightIntensities [index];
								}

								public void SetPointLightIntensity (int index, float intensity) {
												if (index < 0 || index > _pointLightIntensities.Length)
																return;
												if (intensity != _pointLightIntensities [index]) {
																_pointLightIntensities [index] = intensity;
																UpdateMaterialProperties ();
																isDirty = true;
												}
								}

								public float GetPointLightIntensityMultiplier (int index) {
												if (index < 0 || index > _pointLightIntensitiesMultiplier.Length)
																return 0;
												return _pointLightIntensitiesMultiplier [index];
								}

								public void SetPointLightIntensityMultiplier (int index, float intensityMultiplier) {
												if (index < 0 || index > _pointLightIntensitiesMultiplier.Length)
																return;
												if (intensityMultiplier != _pointLightIntensitiesMultiplier [index]) {
																_pointLightIntensitiesMultiplier [index] = intensityMultiplier;
																UpdateMaterialProperties ();
																isDirty = true;
												}
								}

								public Vector3 GetPointLightPosition (int index) {
												if (index < 0 || index > _pointLightPositions.Length)
																return Vector3.zero;
												return _pointLightPositions [index];
								}

								public void SetPointLightPosition (int index, Vector3 position) {
												if (index < 0 || index > _pointLightPositions.Length)
																return;
												if (position != _pointLightPositions [index]) {
																_pointLightPositions [index] = position;
																UpdateMaterialProperties ();
																isDirty = true;
												}
								}

								public Color GetPointLightColor (int index) {
												if (index < 0 || index > _pointLightColors.Length)
																return Color.white;
												return _pointLightColors [index];
								}

								public void SetPointLightColor (int index, Color color) {
												if (index < 0 || index > _pointLightColors.Length)
																return;
												if (color != _pointLightColors [index]) {
																_pointLightColors [index] = color;
																UpdateMaterialProperties ();
																isDirty = true;
												}
								}

								// Look for new lights
								void TrackNewLights () {
												lastFoundLights = GameObject.FindObjectsOfType<Light> ();
								}

								// Look for nearest point lights
								void TrackPointLights () {
												if (!_pointLightTrackingAuto)
																return;

												if (_pointLightTrackingPivot == null) {
																_pointLightTrackingPivot = transform;
												}

												// Look for new lights?
												if (lastFoundLights == null || !Application.isPlaying || Time.time - trackPointCheckNewLightsLastTime > 3f) {
																trackPointCheckNewLightsLastTime = Time.time;
																TrackNewLights ();
												}
												// Sort nearest lights
												int lightsFoundCount = lastFoundLights.Length;
												if (lightBuffer == null || lightBuffer.Length != lightsFoundCount) {
																lightBuffer = new Light[lightsFoundCount];
												}
												for (int k = 0; k < lightsFoundCount; k++) {
																lightBuffer [k] = lastFoundLights [k];
												}
												bool changes = false;
												for (int k = 0; k < MAX_POINT_LIGHTS; k++) {
																GameObject g = null;
																if (k < _pointLightTrackingCount) {
																				g = GetNearestLight (lightBuffer);
																}
																_pointLights [k] = g;
																if (_pointLightRanges [k] != 0 && g == null) {
																				_pointLightRanges [k] = 0;   // disables the light in case g is null
																}
																if (currentLights [k] != g) {
																				currentLights [k] = g;
																				changes = true;
																}
												}
												// Update if there's any change
												if (changes) {
																UpdatePointLights ();
																UpdateMaterialProperties ();
												}
								}

								GameObject GetNearestLight (Light[] lights) {
												float minDist = float.MaxValue;
												Vector3 camPos = _pointLightTrackingPivot.position;
												GameObject nearest = null;
												int selected = -1;
												for (int k = 0; k < lights.Length; k++) {
																Light light = lights [k];
																if (light == null || !light.enabled || light.type != LightType.Point)
																				continue;
																GameObject g = lights [k].gameObject;
																if (!g.activeSelf)
																				continue;
																float dist = (g.transform.position - camPos).sqrMagnitude;
																if (dist < minDist) {
																				nearest = g;
																				minDist = dist;
																				selected = k;
																}
												}
												if (selected >= 0)
																lights [selected] = null;
												return nearest;
								}

								#endregion

								#region Fog Area API

								public static VolumetricFog CreateFogArea (Vector3 position, float radius, float height = 16, float fallOff = 1f) {
												VolumetricFog fog = CreateFogAreaPlaceholder (true, position, radius, height, radius);
												fog.preset = FOG_PRESET.SeaClouds;
												fog.transform.position = position;
												fog.skyHaze = 0;
												fog.dithering = true;
												return fog;
								}

								public static VolumetricFog CreateFogArea (Vector3 position, Vector3 boxSize) {
												VolumetricFog fog = CreateFogAreaPlaceholder (false, position, boxSize.x * 0.5f, boxSize.y * 0.5f, boxSize.z * 0.5f);
												fog.preset = FOG_PRESET.SeaClouds;
												fog.transform.position = position;
												fog.height = boxSize.y * 0.98f;
												fog.skyHaze = 0;
												return fog;
								}

								static VolumetricFog CreateFogAreaPlaceholder (bool spherical, Vector3 position, float radius, float height, float depth) {
												GameObject prefab = spherical ? Resources.Load<GameObject> ("Prefabs/FogSphereArea") : Resources.Load<GameObject> ("Prefabs/FogBoxArea");
												GameObject box = Instantiate (prefab) as GameObject;
												box.transform.position = position;
												box.transform.localScale = new Vector3 (radius, height, depth);
												return box.GetComponent<VolumetricFog> ();
								}

								public static void RemoveAllFogAreas () {
												VolumetricFog[] fogs = FindObjectsOfType<VolumetricFog> ();
												for (int k = 0; k < fogs.Length; k++) {
																if (fogs [k] != null && !fogs [k].hasCamera) {
																				DestroyImmediate (fogs [k].gameObject);
																}
												}
								}

								void CheckFogAreaDimensions () {
												if (!_hasCamera && mr == null)
																mr = GetComponent<MeshRenderer> ();
												if (mr == null)
																return;

												Vector3 size = mr.bounds.extents;
												switch (_fogAreaTopology) {
												case FOG_AREA_TOPOLOGY.Box:
																fogAreaRadius = size.x;
																fogAreaHeight = size.y;
																fogAreaDepth = size.z;
																break;
												case FOG_AREA_TOPOLOGY.Sphere:
																fogAreaRadius = size.x;
																if (transform.localScale.z != transform.localScale.x)
																				transform.localScale = new Vector3 (transform.localScale.x, transform.localScale.y, transform.localScale.x);
																break;
												}
												if (_fogAreaCenter != null) {
																if (_fogAreaFollowMode == FOG_AREA_FOLLOW_MODE.FullXYZ) {
																				transform.position = _fogAreaCenter.transform.position;
																} else {
																				transform.position = new Vector3 (_fogAreaCenter.transform.position.x, transform.position.y, _fogAreaCenter.transform.position.z);
																}
												}
            
												fogAreaPosition = transform.position;
								}

								#if UNITY_EDITOR
								void OnDrawGizmos () {
												if (_fogAreaRadius > 0 && _fogAreaShowGizmos) {
																if (_fogAreaTopology == FOG_AREA_TOPOLOGY.Box) {
																				Gizmos.DrawWireCube (fogAreaPosition, new Vector3 (fogAreaRadius * 2f, fogAreaHeight * 2f, fogAreaDepth * 2f));
																} else {
																				Gizmos.DrawWireSphere (fogAreaPosition, fogAreaRadius); 																
																}
												}
								}
								#endif
								
								#endregion
				}

}