Desktop UI on Mac Os 10.13 (Non-Metal)

Hi everyone!

I’m running Retroarch 1.90 on a Mac Pro (High Sierra) with a non Metal capable video card (ATI Radeon HD 5770 1024 MB). I’ve seen articles mentioning the Desktop UI is available for Macs. I can access it on Windows but not on OSX. Is it Metal exclusive?

Thanks in advance, cheers!