Adrian Peterson Case -- Prosecutor Trashes Judge ... You're Terrible At Your Job!

It's FULL BLOWN WAR in the Adrian Peterson child abuse case -- with the prosecutor CALLING OUT THE JUDGE ... as an incompetent, trash-talking jerk who can't be trusted with the AP case.

TMZ Sports has obtained new court docs filed by the District Attorney of Montgomery County, TX ... who claims Judge Kelly Case didn't just call him a "media whore" behind his back -- he's been openly trashing the D.A.'s office for months.

As we previously reported, the D.A. demanded Judge Case apologize for the "media whore" comments during Wednesday's hearing -- and got it -- but now, the D.A. says the hostility runs much deeper than nasty comments.

According to the docs, the D.A. says Judge Case has unfairly blamed prosecutors for the media's unfavorable coverage of his mistakes on the bench ... and has showed a personal bias against the District Attorney.

Plus, the D.A. says Judge Case has had more of his decisions overturned on appeal than any other judge in the county ... proving he's constantly making bad rulings.

For his part, Judge Case laughed off the suggestion that he should recuse himself from the case at Wednesday's hearing -- but the D.A. is dead serious.