Key points:
Sec. 9.31. SELF-DEFENSE. (a) Except as provided in Subsection (b), a person is justified in using force against another when and to the degree the actor reasonably believes the force is immediately necessary to protect the actor against the other's use or attempted use of unlawful force. The actor's belief that the force was immediately necessary as described by this subsection is presumed to be reasonable if the actor:
(1) knew or had reason to believe that the person against whom the force was used:
(A) unlawfully and with force entered, or was attempting to enter unlawfully and with force, the actor's occupied habitation, vehicle, or place of business or employment;...
Sec. 9.32. DEADLY FORCE IN DEFENSE OF PERSON. (a) A person is justified in using deadly force against another:
(1) if the actor would be justified in using force against the other under Section 9.31; and
(2) when and to the degree the actor reasonably believes the deadly force is immediately necessary:
(A) to protect the actor against the other's use or attempted use of unlawful deadly force; or
(B) to prevent the other's imminent commission of aggravated kidnapping, murder, sexual assault, aggravated sexual assault, robbery, or aggravated robbery.
(b) The actor's belief under Subsection (a)(2) that the deadly force was immediately necessary as described by that subdivision is presumed to be reasonable if the actor:
(1) knew or had reason to believe that the person against whom the deadly force was used:
(A) unlawfully and with force entered, or was attempting to enter unlawfully and with force, the actor's occupied habitation, vehicle, or place of business or employment;
The following is important! Especially to me!
It appears under the Criminal Trespass section rather than the deadly force sections, but never the less, you may not legally shoot at anyone who enters your house -- only those who enter
unlawfully...
(c) It is a defense to prosecution under this section that the actor at the time of the offense was a fire fighter or emergency medical services personnel, as that term is defined by Section 773.003, Health and Safety Code, acting in the lawful discharge of an official duty under exigent circumstances.
I'm still looking for what exactly "...and with force..." means with respect to these statutes. I am pretty sure it does not require at least a splintered door or broken glass... but I am having trouble finding where I came across it before.