The Texas ban against marriage equality has been struck down by by federal and state courts. There is a federal stay on the actions, pending appeal by Dumbo Perry / The Texas AG.
If you were married outside of Texas, your federal 14'th Amendment right of equal protection under the law will apply to Texas, as well.
However....Rick Perry has basically instructed state agencies in Texas to give same sex couples the run around, including same sex couples from the armed forces, and other federal agencies, refusing to service them at state offices, and instead making them utilize a federal office for their service requests. Perry has actively obstructed same sex couples wherever he has been able to.
Texas is almost always last to get on the right side of history, for just about everything. Sad, but,...true.
The codified bigotry now has been struck down at both state and federal levels, and it won't survive, but, Perry and company will waste a bunch of money trying to win votes from The Crazy Religious Right (wrong).
Sadly, most Texans support marriage equality. This is why you MUST vote The horrible GOP out. It DOES matter.