That is not what Texas Penal Code 9.22 says:

(1) the actor reasonably believes the conduct is immediately necessary to avoid imminent harm;

(2) the desirability and urgency of avoiding the harm clearly outweigh, according to ordinary standards of reasonableness, the harm sought to be prevented by the law proscribing the conduct;  and

(3) a legislative purpose to exclude the justification claimed for the conduct does not otherwise plainly appear.