Patents Examined by J. Hsu
  • Method and apparatus for generating a shadow effect using shadow volumes
    Patent number: 7030878
    Abstract: The computer graphics system is configured to generate a shadow effect with a stencil shadow volume method using a combination of compressed and uncompressed stencil buffers in coordination with compressed and uncompressed depth data buffers. An uncompressed stencil buffer is capable of storing stencil shadow volume data for each pixel and a compressed stencil buffer is capable of storing stencil shadow volume data for a group of pixels.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: April 18, 2006
    Assignee: VIA Technologies, Inc.
    Inventors: Jiangming Xu, Wen-Chung Chen, Yuanfeng Wang, Liang Li, John Brothers, Boris Prokopenko