Carmack's Reverse is a computer graphics technique generally credited to John Carmack. It is a technique for Stencil Shadow Volumes[?] that solves the problem of when the viewer's "eye" enters the shadow volume.
... later he was sent to Hawaii, where he was ordained on May 24, 1864. On May 10, 1873, at his request, he was permitted to travel to Molokai to help the lepers who had ...