Invention Grant
US08854392B2 Circular scratch shader 有权
圆形划痕着色器

  • Patent Title: Circular scratch shader
  • Patent Title (中): 圆形划痕着色器
  • Application No.: US13312905
    Application Date: 2011-12-06
  • Publication No.: US08854392B2
    Publication Date: 2014-10-07
  • Inventor: Philip Child
  • Applicant: Philip Child
  • Applicant Address: US CA Emeryville
  • Assignee: Pixar
  • Current Assignee: Pixar
  • Current Assignee Address: US CA Emeryville
  • Agency: Patterson & Sheridan, LLP
  • Main IPC: G09G5/00
  • IPC: G09G5/00
Circular scratch shader
Abstract:
A computer-implemented method for generating a circular scratch highlight. The method includes generating a plurality of texture planes, where each texture plane includes a plurality of copies of a scratch texture oriented in the same direction; generating a combined texture by combining the plurality of texture planes at different angles; applying the combined texture to a surface of an object; calculating a specular gradient vector based on a light vector and a reflectance vector, wherein the specular gradient vector points in a gradient direction of a specular highlight; and generating the circular scratch highlight by assigning, for each of a plurality of points on the surface of the object, a separate weight value corresponding to each texture plane in the combined texture based on how closely an orientation of the texture plane at the point corresponds to a scratch vector that is perpendicular to the specular gradient vector.
Public/Granted literature
Information query
Patent Agency Ranking
0/0