Abstract: A program module executing in a first process space of a mobile computing device receives a buffer request from a graphics driver running in a second process space of the mobile computing device, wherein the second process space is isolated from the first process space. The program module assigns a buffer to the graphics driver to store image data processed by a graphical processing unit (GPU) controlled by the graphics driver. The program module receives a release of the buffer from the graphics driver. The program module assigns the buffer to a media encoder driver for a hardware media encoder to encode the image data in the buffer into a file.

Abstract: Systems and methods for a stencil-based overdraw visualizer are described. Mobile device that includes, for example, one or more memories and one or more processors operatively coupled to the one or more memories. The one or more memories include a stencil buffer. The one or more processors are configured to render graphics on a display based on an application that is running on the one or more processors; count overdraws in the stencil buffer on a pixel-by-pixel basis; associate respective colors with corresponding overdraw values stored in the stencil buffer; and combine rendered graphics on the display based on the application with the colors indicated in the stencil buffer on a pixel-by-pixel basis.