Avoiding Sending Unchanged Regions to Display

摘要

In accordance with some embodiments, in a sort last architecture, it is determined whether each of a plurality of portions of a screen display are constant from one frame to the next. A frame may be divided into tiles that may be rectangular regions of pixels. If the tiles are constant then the tile need not be sent to the display.

主权项

1. A method comprising:
using a graphics processor to divide a frame into a plurality of tiles; determining a hash for each of said tiles; comparing the hashes for each tile to hashes for the same tiles in a previous frame; and only sending a tile to a display if the hashes are not the same.