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Efficiently Path-Clipping Layered UI Content for Mobile Devices

IP.com Disclosure Number: IPCOM000238083D
Publication Date: 2014-Jul-31

Publishing Venue

The IP.com Prior Art Database

Abstract

Techniques for efficiently path clipping anti-aliased content are provided. These techniques can be used for static and animated graphical applications, such as graphical user interfaces (UIs). Desired content is first drawn to a window. Then, an anti-aliased border can be drawn on the desired content, for example, using a thin border of alpha-ramped tessellated polygons. Additional content, such as a drop shadow, can then be added to the desired content. The additional content can be blended so that it appears below the desired content. These techniques can be performed in an efficient fashion, particularly by graphical processing units (GPUs) commonly deployed with mobile devices, such as smart phones.