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Pixel component packing, unpacking, and modification

  • US 6,452,601 B1
  • Filed: 05/20/1999
  • Issued: 09/17/2002
  • Est. Priority Date: 05/20/1999
  • Status: Expired due to Fees
First Claim
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1. A computer system comprising:

  • a system memory accessible from the host bus via a memory controller;

    an I/O bridge coupled between the host bus and the I/O bus;

    a frame buffer suitable for storing a representation of a graphic image; and

    a graphics adapter on the I/O bus, wherein the graphics adapter comprises register means for programmably specifying a host pixel data format that defines the ordering and width of a set of host components;

    means for receiving host pixel data comprising a set of host component values formatted according to the host pixel data format;

    means for transforming the host pixel data into frame buffer pixel data formatted, according to a frame buffer format defining the ordering and width of a set of frame buffer components, as a set of frame buffer component values; and

    means for forwarding the frame buffer pixel data to the frame buffer.

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