Reply to the mail from Franz Reinhardt (fre@xxxxxxxxxx): > > If the adapter overlays an image from offscreen memory, which is > rectangular, how the clipping is done ? Every pixel in the target area of the overlay which has the special drop-out-color which you defined somewhere, will be replaced by the overlay image. Pixels with another color won�t get replaced and thus show the framebuffer contents. I hope this is what you wanted to know... -Arne > > How can I tell the hardware, when the visible framebuffer is shown and > when a piece of the overlay is shown ? > > TIA, > > Franz > > > -- > video4linux-list mailing list > Unsubscribe mailto:video4linux-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/video4linux-list