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diff --git a/APEX_1.4/include/emitter/EmitterLodParamDesc.h b/APEX_1.4/include/emitter/EmitterLodParamDesc.h
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+++ b/APEX_1.4/include/emitter/EmitterLodParamDesc.h
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+/*
+ * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+
+#ifndef EMITTER_LOD_PARAM_DESC_H
+#define EMITTER_LOD_PARAM_DESC_H
+
+#include "Apex.h"
+
+namespace nvidia
+{
+namespace apex
+{
+
+
+PX_PUSH_PACK_DEFAULT
+
+///LOD parameters fro emitters
+class EmitterLodParamDesc : public ApexDesc
+{
+public:
+	float  maxDistance;        ///< Objects greater than this distance from the player will be culled more aggressively
+	float  distanceWeight;     ///< Weight given to distance parameter in LOD function
+	float  speedWeight;        ///< Weight given to velocity parameter in LOD function
+	float  lifeWeight;         ///< Weight given to life remain parameter in LOD function
+	float  separationWeight;   ///< Weight given to separation parameter in LOD function
+	float  bias;               ///< Bias given to objects spawned by this emitter, relative to other emitters in the same IOS
+
+	/**
+	\brief constructor sets to default.
+	*/
+	PX_INLINE EmitterLodParamDesc() : ApexDesc()
+	{
+		init();
+	}
+
+	/**
+	\brief sets members to default values.
+	*/
+	PX_INLINE void setToDefault()
+	{
+		ApexDesc::setToDefault();
+		init();
+	}
+
+	/**
+	\brief checks if this is a valid descriptor.
+	*/
+	PX_INLINE bool isValid() const
+	{
+		if (distanceWeight < 0.0f || speedWeight < 0.0f || lifeWeight < 0.0f)
+		{
+			return false;
+		}
+		if (separationWeight < 0.0f || maxDistance < 0.0f || bias < 0.0f)
+		{
+			return false;
+		}
+		return ApexDesc::isValid();
+	}
+
+	/**
+	\brief enum of manifest versions
+	*/
+	enum ManifestVersions
+	{
+		initial,
+
+		count,
+		current = count - 1
+	};
+
+private:
+
+	PX_INLINE void init()
+	{
+		// These defaults give you pure distance based LOD weighting
+		maxDistance = 0.0f;
+		distanceWeight = 1.0f;
+		speedWeight = 0.0f;
+		lifeWeight = 0.0f;
+		separationWeight = 0.0f;
+		bias = 1.0f;
+	}
+};
+
+
+PX_POP_PACK
+
+}
+} // end namespace nvidia
+
+#endif // EMITTER_LOD_PARAM_DESC_H