Interruptible GPU and method for context saving and restoring

Details Interruptible GPU and method for context saving and restoring Interruptible GPU and method for context saving and restoring

2005-11-10

2009-06-09

Tung, Kee M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphic processing system

Graphic command processing

C718S107000, C718S108000, C345S506000

Reexamination Certificate

active

07545381

ABSTRACT:
A graphics processing unit (“GPU”) is configured to receive an interrupt command from a CPU or internal interrupt event while the GPU is processing a first context. The GPU saves the first context to memory and records a precise processing position for the first context corresponding to the point interrupted. Thereafter, the GPU loads a second context to the processing portion of the GPU from memory and begins executing instructions associated with the second context. After the second context is complete of if an interrupt command directs restoration of the first context, the GPU's processor switches to the first context for continued processing. The first context is retrieved from memory and restored to the precise processing position where previously interrupted. The GPU then processes a remainder portion of the first context from the precise processing point to an end of the first context.

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