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System and method for improving the graphics performance of hosted applications

  • US 8,845,434 B2
  • Filed: 09/14/2011
  • Issued: 09/30/2014
  • Est. Priority Date: 12/10/2002
  • Status: Expired due to Term
First Claim
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1. A server-based system for hosting applications/video games for a plurality of clients comprising:

  • an application/game server comprising a central processing unit to process application/video game program code and a graphics processing unit (GPU) to process graphics commands and generate a series of video frames for the application/video game;

    one or more back buffers to store video frames as the video frames are being created in response to the execution of the graphics commands;

    a front buffer to receive a video frame for rendering on a display after the video frame has been completed in one of the one or more back buffers, the front buffer outputting the video frame for display one scan line at a time at a designated scan out frequency, a subset of scan lines stored in the front buffer being associated with an interval;

    a frame processing module to perform the operations of;

    determining a most recent scan line output from the front buffer;

    in response to a new frame being completed in one of the back buffers, determining an amount of work remaining in a GPU command queue and, if the amount of work remaining in the command queue would cause the newly completed frame from the back buffer to be copied to the front buffer while a current scan line being output from the front buffer is outside of a designated region of the video frame, then inserting an operation in the command queue, the operation to cause the new frame in the back buffer to be transferred to the front buffer after the work remaining in the command queue is completed.

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