Invention Grant
- Patent Title: Circular scratch shader
- Patent Title (中): 圆形划痕着色器
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Application No.: US13312905Application Date: 2011-12-06
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Publication No.: US08854392B2Publication 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

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
- US20130141451A1 CIRCULAR SCRATCH SHADER Public/Granted day:2013-06-06
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