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US 2022/0092722 A1Published application
Glitchless gpu switching at a multiplexer
AssigneeATI Technologies ULC
InventorsAnthony WL KOO, Syed Athar HUSSAIN
Life of this patent
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Abstract
A rendering device signals a display device to capture and replay a current frame to maintain a static image while switching between multiple graphics processing units (GPUs) at a multiplexer (MUX). Replaying the current frame while the MUX switch is in progress smooths the user experience such that no screen blanking or artifacts are observable.
Claims22
A method comprising:
- in response to a comparison of a frame of pixel data to a graphics intensity threshold, signaling, at a rendering device of a processor, a capture and replay of pixel data output from a first graphics processing unit (GPU);
- switching from outputting pixel data from the first GPU to outputting pixel data from a second GPU in response to the capture and replay of pixel data output from the first GPU;
- and
- signaling a display of the frame of pixel data transmitted by the second GPU in response to a completion of the switching.
1 more element
A method comprising:
- outputting pixel data from a first graphics processing unit (GPU) of a processor;
- in response to a comparison of a frame of pixel data to a graphics intensity threshold, signaling a replay of pixel data output from the first GPU;
- disabling outputting pixel data from the first GPU in response to the replaying of pixel data output from the first GPU;
- switching to output pixel data from a second GPU;
- and
- signaling a display of the frame of pixel data output from the second GPU in response to the second GPU outputting pixel data.
3 more elements
A device comprising:
- a first graphics processing unit (GPU);
- a second GPU;
- and
- a control logic configured to switch between outputting pixel data to a display panel from the first GPU and the second GPU;
- wherein
- in response to a comparison of a frame of pixel data to a graphics intensity threshold, the first GPU is configured to signal the display panel to replay pixel data output from the first GPU in response to detecting that the device will switch from outputting pixel data to the display panel from the first GPU to outputting pixel data to the display panel from the second GPU;
- and
- the second GPU is configured to signal the display panel to display the frame of pixel data output from the second GPU in response to the second GPU outputting pixel data.
5 more elements
Dependencies are inferred from the claim text.