In Texas, you are permitted to represent yourself and to talk to the judge directly.  However, if you do chose to represent yourself, you will be required to adhere to all of the rules of court.  This means that if you have evidence to offer, that you may not be able to admit the evidence if you do not follow the rules.  If your evidence is not admitted, then you may not be able to make your case and defend yourself.  So... yes, you can talk to the judge directly.  Just understand that it may not turn out the way you want or need it to.