public static ushort[] ToIndicesFixX(this ushort[] indices) {
var result = new ushort[indices.Length];
for (var i = 0; i < indices.Length; i += 3) {
result[i] = indices[i];
result[i + 1] = indices[i + 2];
result[i + 2] = indices[i + 1];
}
return result;
}