Tex. Code Crim. Proc. art. 27.13
Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023.
A plea of "guilty" or a plea of "nolo contendere" in a felony case must be made in open court by the defendant in person; and the proceedings shall be as provided in Articles 26.13, 26.14 and 27.02. If the plea is before the judge alone, same may be made in the same manner as is provided for by Articles 1.13 and 1.15.
Tex. Code Crim. Proc. § 27.13