> Default HLSL settings but I changed the "HLSL screenshot resolution" setting to > 3840x2160.
I only use 2560x1440. (Because my screen only go that far.)
But I turn off the shadow_mask_alpha because on the real screen when you far away from it. You can't see the color scanlines patterns. Just the lines and brightness. Ether the lines going up to down or going left to right.
You can't even see the lines farther back away. Looking like a slick clear glass screen.
Only see the color scanlines patterns way up close to the screen. Talking about zoom all the way to the screen.
color scanlines patterns = RGB lines or what ever the color lines are. Close being vanish from the brightness screen.
With the shadow_mask_alpha turn up. MAME doesn't know how to fade/darken it in/out on automatic when the bright/dark video colors show up. Stays dark. Look fake. It better leave that shadow_mask_alpha turn off.