Thanks Arsinvictus, I tried that, but never got it to work, I thought it would but not sure how the png store the transparency or retroarch interperatres, as when it’s shadows it seems to work but when color images it doesn’t. i tried on a space invader mame overlay conversion but it just didn’t show any transparency. it was driving me nuts.Also on the boot hill I tried.
So if someone knows more please inform us.
If Hyperspacemadness was wanting this, I am glad to have done it, as it’s a small way to give something back to all his hard work!!