Tex. Hum. Res. Code § 245.152
(a) Not later than the 90th day before the date the department transfers a person to the custody of the Texas Department of Criminal Justice for release on parole under Section 245.051(c) or 245.151(e), the department shall submit to the Texas Department of Criminal Justice all pertinent information relating to the person, including:
(c) The Texas Department of Criminal Justice shall grant credit for sentence time served by a person at the department and in a juvenile detention facility, as recorded by the department under Subsection (a)(6), in computing the person's eligibility for parole and discharge from the Texas Department of Criminal Justice.
Transferred, redesignated and amended from Human Resources Code, Subchapter F, Chapter 61 by Acts 2011, 82nd Leg., R.S., Ch. 85 (S.B. 653), Sec. 1.007, eff. September 1, 2011.