Render options

Do the render options function if you're using a full screen mix?
i.e: mixed layers with fx?
I'm guessing they get bypassed along with the mix type etc?

Funny you ask this, I was just thinking the other day, I really don't even know what the render option is really for. I usually just set it to match my output resolution so unity scale will work correctly for mix types other than default, but I have no idea why, or why I would want it set differently?

Can someone explain?