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diff --git a/linden/indra/newview/llviewerjointmesh_vec.cpp b/linden/indra/newview/llviewerjointmesh_vec.cpp
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+++ b/linden/indra/newview/llviewerjointmesh_vec.cpp
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+/** 
+ * @file llviewerjointmesh.cpp
+ * @brief LLV4 math class implementation with LLViewerJointMesh class
+ *
+ * Copyright (c) 2001-2007, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+//-----------------------------------------------------------------------------
+// Header Files
+//-----------------------------------------------------------------------------
+#include "llviewerprecompiledheaders.h"
+
+#include "llviewerjointmesh.h"
+
+#include "llface.h"
+#include "llpolymesh.h"
+#include "llv4math.h"
+#include "llv4matrix3.h"
+#include "llv4matrix4.h"
+
+// *NOTE: This is the fallback code for vectorized joint mesh skinning.
+// For builds that must support non-SSE x86 code (Windows, perhaps Linux)
+// SSE code generation should be disabled for this file.
+//
+// For builds that run on processors that always have SSE (Mac),
+// SSE code generation can be enabled.  JC
+
+static LLV4Matrix4      sJointMat[32];
+
+// static
+void LLViewerJointMesh::updateGeometryVectorized(LLFace *face, LLPolyMesh *mesh)
+{
+        LLDynamicArray<LLJointRenderData*>& joint_data = mesh->getReferenceMesh()->mJointRenderData;
+        S32 j, joint_num, joint_end = joint_data.count();
+        LLV4Vector3 pivot;
+
+        //upload joint pivots/matrices
+        for(j = joint_num = 0; joint_num < joint_end ; ++joint_num )
+        {
+                LLSkinJoint *sj;
+                const LLMatrix4 *       wm = joint_data[joint_num]->mWorldMatrix;
+                if (NULL == (sj = joint_data[joint_num]->mSkinJoint))
+                {
+                                sj = joint_data[++joint_num]->mSkinJoint;
+                                ((LLV4Matrix3)(sJointMat[j] = *wm)).multiply(sj->mRootToParentJointSkinOffset, pivot);
+                                sJointMat[j++].translate(pivot);
+                                wm = joint_data[joint_num]->mWorldMatrix;
+                }
+                ((LLV4Matrix3)(sJointMat[j] = *wm)).multiply(sj->mRootToJointSkinOffset, pivot);
+                sJointMat[j++].translate(pivot);
+        }
+
+        F32                                     weight          = F32_MAX;
+        LLV4Matrix4                     blend_mat;
+
+        LLStrider<LLVector3> o_vertices;
+        LLStrider<LLVector3> o_normals;
+
+        LLVertexBuffer *buffer = face->mVertexBuffer;
+        buffer->getVertexStrider(o_vertices,  mesh->mFaceVertexOffset);
+        buffer->getNormalStrider(o_normals,   mesh->mFaceVertexOffset);
+
+        const F32*                      weights                 = mesh->getWeights();
+        const LLVector3*        coords                  = mesh->getCoords();
+        const LLVector3*        normals                 = mesh->getNormals();
+        for (U32 index = 0, index_end = mesh->getNumVertices(); index < index_end; ++index)
+        {
+                if( weight != weights[index])
+                {
+                        S32 joint = llfloor(weight = weights[index]);
+                        blend_mat.lerp(sJointMat[joint], sJointMat[joint+1], weight - joint);
+                }
+                blend_mat.multiply(coords[index], o_vertices[index]);
+                ((LLV4Matrix3)blend_mat).multiply(normals[index], o_normals[index]);
+        }
+}