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

A non-transitory computer-readable storage medium including instructions that, when executed by a processor, cause the processor to:

• receive coordinates for one or more portions of a display where a tear line is permitted;
• determine whether 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 the tear line is permitted;
• and
• if the frame transition is to occur while the rendered content is being scanned out for display within the one or more portions of the display where the tear line is permitted, then the processor is further configured to
• allow the frame transition to occur, or
• if the frame transition is to occur while the rendered content is being scanned out for display outside the one or more portions of the display where the tear line is permitted, then the processor is further configured to delay the frame transition until the rendered content is being scanned out
• for display within the one or more portions of the display where the tear line is permitted.

A system, comprising:

• a memory storing an application;
• and
• a processor coupled to the memory and, when executing the application, is configured to:
• receive coordinates for one or more portions of a display where a tear line is permitted;
• determine whether 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 the tear line is permitted;
• and
• if the frame transition is to occur while the rendered content is being scanned out for display is within the one or more portions of the display where the tear line is permitted, then the processor is further configured to
• allow the frame transition to occur, or
• if the frame transition is to occur while the rendered content is being scanned out for display outside the one or more portions of the display where the tear line is permitted, then the processor is further configured to
• delay the frame transition until the rendered content is being scanned out for display within the one or more portions of the display where the tear line is permitted.