Ugh, I almost give up!

The scene was from probably the late 70s or early 80s. It has an Asian woman looking out over a deck where a guy is out on a lawn chair. She comes down, dressed in a red silky outfit with Asian designs.

She starts with a blowjob, then then end up having sex, I believe he finishes on her bush. If I remember correctly, the actress was a pretty big name.