Can I connect my Mac to my Denon AVR-S910W via HDMI?

So, I just purchased my new Denon AVR-S910W, and finished mounted my Swan Diva 2.1 speakers as my front height L&R channels, and found out my Xbox One will not send out the proper signal for me to enjoy an Atmos decided Blu-Ray. So, until I can buy a new Blu-ray player (going cheaper and saving up for a new 4K Blu-ray player next year, I'd like to be able to use one of the downloadable Atmos demo trailers to play through my Denon and skip my XboxOne.

Is this possible to connect my Retna Laptop Apple Computer via HDMI into one of the HDMI inputs on the Denon, and send the proper signal into the Denon to display on my HDTV and atmos decode properly through my new Denon AVR?

Is there specific software I'd need in my Mac to play the file in the correct way for the Denon to decode it properly for Atmos? And can someone point me to a few of the Atmos downloadable trailers I can download?

Thanks in advance everyone! Blessings!