Texas Code of Criminal Procedure - CRIM P Art. 45.042. Appeal

(a) Appeals from a justice or municipal court, including appeals from final judgments in bond forfeiture proceedings, shall be heard by the county court except in cases where the county court has no jurisdiction, in which counties such appeals shall be heard by the proper court.

(b) Unless the appeal is taken from a municipal court of record and the appeal is based on error reflected in the record, the trial shall be de novo.

(c) In an appeal from the judgment and sentence of a justice or municipal court, if the defendant is in custody, the defendant is to be committed to jail unless the defendant gives bail.