Texas Code of Criminal Procedure - CRIM P Art. 45.018. Complaint

(a) For purposes of this chapter, a complaint is a sworn allegation charging the accused with the commission of an offense.

(b) A defendant is entitled to notice of a complaint against the defendant not later than the day before the date of any proceeding in the prosecution of the defendant under the complaint. The defendant may waive the right to notice granted by this subsection.