add TextureMatrixScale vertex attribute; disable X texture animation with

1, Y with 2

stepmania/src/RageModelGeometry.cpp

@@ -183,6 +183,10 @@ void RageModelGeometry::LoadMilkshapeAscii( const CString& _sPath, bool bNeedsNo
 				//Ym2413a Added: End
 
 //                  vertex.nFlags = nFlags;
+					if( nFlags & 1 )
+						v.TextureMatrixScale.x = 0;
+					if( nFlags & 2 )
+						v.TextureMatrixScale.y = 0;
                     v.bone = (uint8_t) nIndex;
 					RageVec3AddToBounds( v.p, m_vMins, m_vMaxs );
                 }

stepmania/src/RageTypes.h

@@ -237,12 +237,14 @@ struct RageModelVertex	// doesn't have color.  Relies on material color
 	RageModelVertex():
 		p(0,0,0),
 		n(0,0,0),
-		t(0,0)
+		t(0,0),
+		TextureMatrixScale(1,1)
 		{ }
     RageVector3		p;	// position
     RageVector3		n;	// normal
 	RageVector2		t;	// texture coordinates
 	int8_t			bone;
+	RageVector2		TextureMatrixScale; // usually 1,1
 };