diff --git a/code/nel/include/nel/3d/matrix_3x4.h b/code/nel/include/nel/3d/matrix_3x4.h
index 994ea555e..929aca0d8 100644
--- a/code/nel/include/nel/3d/matrix_3x4.h
+++ b/code/nel/include/nel/3d/matrix_3x4.h
@@ -56,58 +56,128 @@ public:
 	// Copy from a matrix.
 	void	set(const CMatrix &mat)
 	{
-		const float	*m =mat.get();
+		const float	*m = mat.get();
+#ifdef NL_HAS_SSE2
+		mm1 = _mm_load_ps(&m[0]);
+		mm2 = _mm_load_ps(&m[4]);
+		mm3 = _mm_load_ps(&m[8]);
+		mm4 = _mm_load_ps(&m[12]);
+#else
 		a11= m[0]; a12= m[4]; a13= m[8] ; a14= m[12];
 		a21= m[1]; a22= m[5]; a23= m[9] ; a24= m[13];
 		a31= m[2]; a32= m[6]; a33= m[10]; a34= m[14];
+#endif
 	}
 
 
 	// mulSetvector. NB: in should be different as v!! (else don't work).
 	void	mulSetVector(const CVector &in, CVector &out)
 	{
+#ifdef NL_HAS_SSE2
+		__m128 xxx = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(0, 0, 0, 0));
+		__m128 yyy = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(1, 1, 1, 1));
+		__m128 zzz = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(2, 2, 2, 2));
+		out.mm = _mm_mul_ps(mm1, xxx);
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm2, yyy));
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm3, zzz));
+#else
 		out.x= (a11*in.x + a12*in.y + a13*in.z);
 		out.y= (a21*in.x + a22*in.y + a23*in.z);
 		out.z= (a31*in.x + a32*in.y + a33*in.z);
+#endif
 	}
 	// mulSetpoint. NB: in should be different as v!! (else don't work).
 	void	mulSetPoint(const CVector &in, CVector &out)
 	{
+#ifdef NL_HAS_SSE2
+		__m128 xxx = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(0, 0, 0, 0));
+		__m128 yyy = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(1, 1, 1, 1));
+		__m128 zzz = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(2, 2, 2, 2));
+		out.mm = _mm_mul_ps(mm1, xxx);
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm2, yyy));
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm3, zzz));
+		out.mm = _mm_add_ps(out.mm, mm4);
+#else
 		out.x= (a11*in.x + a12*in.y + a13*in.z + a14);
 		out.y= (a21*in.x + a22*in.y + a23*in.z + a24);
 		out.z= (a31*in.x + a32*in.y + a33*in.z + a34);
+#endif
 	}
 
 
 	// mulSetvector. NB: in should be different as v!! (else don't work).
 	void	mulSetVector(const CVector &in, float scale, CVector &out)
 	{
+#ifdef NL_HAS_SSE2
+		__m128 xxx = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(0, 0, 0, 0));
+		__m128 yyy = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(1, 1, 1, 1));
+		__m128 zzz = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(2, 2, 2, 2));
+		out.mm = _mm_mul_ps(mm1, xxx);
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm2, yyy));
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm3, zzz));
+		out.mm = _mm_mul_ps(out.mm, _mm_set1_ps(scale));
+#else
 		out.x= (a11*in.x + a12*in.y + a13*in.z) * scale;
 		out.y= (a21*in.x + a22*in.y + a23*in.z) * scale;
 		out.z= (a31*in.x + a32*in.y + a33*in.z) * scale;
+#endif
 	}
 	// mulSetpoint. NB: in should be different as v!! (else don't work).
 	void	mulSetPoint(const CVector &in, float scale, CVector &out)
 	{
+#ifdef NL_HAS_SSE2
+		__m128 xxx = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(0, 0, 0, 0));
+		__m128 yyy = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(1, 1, 1, 1));
+		__m128 zzz = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(2, 2, 2, 2));
+		out.mm = _mm_mul_ps(mm1, xxx);
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm2, yyy));
+		out.mm = _mm_add_ps(out.mm, _mm_mul_ps(mm3, zzz));
+		out.mm = _mm_add_ps(out.mm, mm4);
+		out.mm = _mm_mul_ps(out.mm, _mm_set1_ps(scale));
+#else
 		out.x= (a11*in.x + a12*in.y + a13*in.z + a14) * scale;
 		out.y= (a21*in.x + a22*in.y + a23*in.z + a24) * scale;
 		out.z= (a31*in.x + a32*in.y + a33*in.z + a34) * scale;
+#endif
 	}
 
 
 	// mulAddvector. NB: in should be different as v!! (else don't work).
 	void	mulAddVector(const CVector &in, float scale, CVector &out)
 	{
+#ifdef NL_HAS_SSE2
+		__m128 xxx = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(0, 0, 0, 0));
+		__m128 yyy = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(1, 1, 1, 1));
+		__m128 zzz = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(2, 2, 2, 2));
+		__m128 temp = _mm_mul_ps(mm1, xxx);
+		temp = _mm_add_ps(temp, _mm_mul_ps(mm2, yyy));
+		temp = _mm_add_ps(temp, _mm_mul_ps(mm3, zzz));
+		temp = _mm_mul_ps(temp, _mm_set1_ps(scale));
+		out.mm = _mm_add_ps(out.mm, temp);
+#else
 		out.x+= (a11*in.x + a12*in.y + a13*in.z) * scale;
 		out.y+= (a21*in.x + a22*in.y + a23*in.z) * scale;
 		out.z+= (a31*in.x + a32*in.y + a33*in.z) * scale;
+#endif
 	}
 	// mulAddpoint. NB: in should be different as v!! (else don't work).
 	void	mulAddPoint(const CVector &in, float scale, CVector &out)
 	{
+#ifdef NL_HAS_SSE2
+		__m128 xxx = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(0, 0, 0, 0));
+		__m128 yyy = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(1, 1, 1, 1));
+		__m128 zzz = _mm_shuffle_ps(in.mm, in.mm, _MM_SHUFFLE(2, 2, 2, 2));
+		__m128 temp = _mm_mul_ps(mm1, xxx);
+		temp = _mm_add_ps(temp, _mm_mul_ps(mm2, yyy));
+		temp = _mm_add_ps(temp, _mm_mul_ps(mm3, zzz));
+		temp = _mm_add_ps(temp, mm4);
+		temp = _mm_mul_ps(temp, _mm_set1_ps(scale));
+		out.mm = _mm_add_ps(out.mm, temp);
+#else
 		out.x+= (a11*in.x + a12*in.y + a13*in.z + a14) * scale;
 		out.y+= (a21*in.x + a22*in.y + a23*in.z + a24) * scale;
 		out.z+= (a31*in.x + a32*in.y + a33*in.z + a34) * scale;
+#endif
 	}