The actor, who’s 53, sobbed uncontrollably as the audience on the Lido erupted into 15-minute standing ovation, one of the longest at this year’s festival so far.

Johnson, who once performed as the WWE wrestler known as the Rock, has been the star of such commercial fare as “The Mummy,” “Black Adam” and “Baywatch.”

But he goes much deeper in his next project, which will be released by A24 in November, as a 1990s fighter with demons.

As the hooting and cheering stretched on, “The Smashing Machine” proved to be the most emotional premiere on the Lido since Brendan Fraser collapsed into tears four years ago, launching his Oscar campaign for The Whale.

Johnson was in good spirits, working one of Europe’s most glamorous red carpets, signing autographs for fans and snapping selfies.

This year’s 82nd edition of Venice has been packed with stars —George Clooney Julia Roberts, Emma Stone — and Johnson and Blunt added to the A-list wattage of the festival that’s now known as the official launch of awards season.

The actor said he was drawn to “The Smashing Machine” because Safdie is someone who “continues to push the envelope when it comes to stories that are raw and real; characters that are authentic and at times uncomfortable and arresting.”

The Smashing Machine marks the solo directorial debut of Benny Safdie, who worked with his older brother, Josh, on indie favorites like “Good Time” and “Uncut Gems.”

Josh will also make his solo feature debut this year with A24’s Marty Supreme, a sports drama starring Timothee Chalamet.

The Smashing Machine reunites Benny Safdie and Blunt, who shared memorable scene in Christopher Nolan’s historical epic Oppenheimer, as well as Johnson and Blunt, who co-starred in Disney’s action-adventure Jungle Cruise.