Partial Tile Rendering

摘要

In accordance with some embodiments, partial rendering of non-changing or slowly changing frame tiles allows the graphics processing unit to spend less time processing non-changing or slowly changing portions of each frame, saving power and creating more room for performance in some embodiments.

主权项

1. A method comprising:
partially rendering a tile in a current frame including a plurality of pixels by rendering, less than all of said pixels; comparing the rendered pixels in the current frame with corresponding pixels from a tile in a previous frame; if any partially rendered pixel in the current frame is different from the corresponding pixel in the previous frame by an amount exceeding a threshold, completely rendering the tile; and if no partially rendered pixel is different from the corresponding pixel in the previous frame by an amount exceeding the threshold, then copying the previous frame instead of completing the rendering of the current frame.