NVIDIA Corporation
Determining allowable locations of tear lines when scanning out rendered data for display

Abstract:

A technique for selecting locations of tear lines when displaying visual content. The technique includes receiving coordinates for one or more portions of a display where a tear is permitted and determining if a frame transition is to occur while rendered content is being scanned out for display within the one or more portions of the display where tear is permitted. If the frame transition is to occur while the scanline for the display is in the one or more portions of the display where tear is permitted, then the technique further includes allowing the frame transition to occur. If the frame transition is to occur while the scanline for the display is not in the one or more portions of the display where tear is permitted, then the technique further includes delaying the frame transition until at least when the scanline for the display is in the one or more portions of the display where tear is permitted.