Apple Inc.

Michael J E Swift

Gokhan Avkarogullari

Richard Warren Schreyer

Jason P Jane

Luc R Semeria

Patrick Y Law

Sean Matthew Gies

Alex Kan

Sean Boland Kelly

Charles John Pisula

Christopher C Niederauer

Loren Brichter

In one embodiment, a system controls a duty cycle of a processor (e.g. a graphics processing unit (GPU)) to manage power. The GPU may include a snoop indicator that may control whether or not the GPU captures and/or responds to communications from another processor (e.g. a central processing unit (CPU) that executes a driver associate with the GPU). A snooze indicator may control whether or not the GPU is automatically repowered at the start of the next frame, or is repowered only if the communication indicating additional work has been received. In an embodiment, the GPU mode controls discussed above may permit the GPU firmware executed with the GPU itself to control duty cycle power down, independent of the driver executing on the CPU.

Graphics hardware mode controls

In an embodiment, a processor that includes multiple cores may implement a power/performance-efficient stop mechanism for power gating. One or more first cores of the multiple cores may have a higher latency stop than one or more second cores of the multiple cores. The power control mechanism may permit continued dispatching of work to the second cores until the first cores have stopped. The power control mechanism may prevent dispatch of additional work once the first cores have stopped, and may power gate the processing in response to the stopping of the second cores. Stopping a core may include one or more of: requesting a context switch from the core or preventing additional work from being dispatched to the core and permitting current work to complete normally. In an embodiment, the processor may be a graphics processing unit (GPU).

Graphics power control with efficient power usage during stop

Methods and apparatuses for adaptive presentation of graphical representations.

Adaptive artwork for bandwidth- and/or memory-limited devices

Techniques for anti-aliasing of graphical objects. A graphical object to be displayed on a display image may be modified to include a border region at least partially surrounding the object. The color of the border region may be selected based on the color of the background over which the graphical object is to be displayed. The graphical object is linearly filtered. The linearly filtered graphical object is displayed on a display device.

Edge anti-aliasing

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San Francisco, CA, United States of America

Michael J E Swift