Arm Limited

David Brown

Damian Piotr Modrzyk

Ozgur Ozkurt

A display controller for a data processing system comprises two sets of display processing units, each set of display processing units comprising an input unit operable to read at least one input surface, a processing unit operable to process one or more input surfaces to generate an output surface, and an output unit operable to provide an output surface for display to a display. The display controller also includes internal data path via which pixel data of a surface may be passed between the sets of display processing units, and a control unit that can selectively activate one or both of the sets of display processing units to process one or more input surfaces to generate one or more output surfaces for display.

Display controller

A data processing system comprises a host processor and a graphics processor that renders frames to be output and writes those frames to a frame buffer. When a new frame is to be generated and written to the frame buffer, the host processor determines, for a set of plural sub-regions that the frame has been divided into, which of those sub-regions could have changed from the frame previously used for the frame bufferand generates information indicating which sub-regions should be rendered to generate the new frame on the basis of the determination The information indicating which sub-regions should be rendered to generate the frame is provided to the graphics processorand the graphics processor uses the provided sub-region information to render only the indicated sub-regions

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Fulbourn, United Kingdom

David Brown