UVWarning

private function initObjects():void
{
  var splitH:Number = 8
	var splitV:Number = 8
	var depth:Number = 69;
	var i:int = 0;
	var j:int = 0;
	
	var mat:TextureMaterial = new TextureMaterial(Cast.bitmapTexture(new ImageEmbed()));
	mat.animateUVs = true;
	
	var cont:ObjectContainer3D
	var planeFrontMesh:Mesh
	var pg:PlaneGeometry
	pg = new PlaneGeometry(1920 / splitH, 1080 / splitV, 1, 1, false)
	
	for (i = 0; i <= splitH - 1; i++)
	{
		for (j = 0; j <= splitV - 1; j++)
		{
			
			cont = new ObjectContainer3D();
			cont.x = 1920 / splitH * i - 1920 / 2 + 1920 / (splitH * 2);
			cont.y = 1080 / splitV * -j + 1080 / 2 - 1080 / (splitV * 2);
			cont.z = depth / 2;
			scene.addChild(cont);
			
			
			planeFrontMesh = new Mesh(pg, mat);
			planeFrontMesh.z = -depth / 2;
			cont.addChild(planeFrontMesh);
			
			planeFrontMesh.geometry.scaleUV(1 / splitH, 1 / splitV);
			//causes UV warning
			planeFrontMesh.subMeshes[0].offsetU = ((1 / splitH) * i);
			planeFrontMesh.subMeshes[0].offsetV = (1 / splitV * j);
			
			//note this doesnt cause the trace warning as offsetU is never the same as the last value set
			//so uvTransformDirty is set and matrix assigned
			//planeFrontMesh.subMeshes[0].offsetU = 1/i;
		}
	}
}