Fast lighting processors

Details Fast lighting processors Fast lighting processors

2006-07-11

2006-07-11

Philogene, Haissa (Department: 2828)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S426000, C345S643000, C345S586000, C345S589000, C345S660000, C345S664000

Reexamination Certificate

active

07075530

ABSTRACT:
The present invention provides methods, apparatus and systems for enabling real-time lighting of 3D geometric models. While these are well-suited for all processors, these are particularly useful on low power processors typically found in PDAs, cell phones, and embedded display systems. Methods+presented utilize a preprocessing scale factor and real-time shift factor to efficiently calculate diffuse lighting intensities for the bound vertices of the geometric model. An example embodiment includes scaling first digitized data of a 3D model in a floating point datatype by a scaling factor to form scaled digitized data. The scaling factor being a proper power of two. Converting said scaled digitized data into an integer datatype forming second digitized data. Enabling a transfer of said second digitized data to a display system, and facilitating lighting and shading said second format of digitized data.

REFERENCES:
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patent: 5936629 (1999-08-01), Brown et al.
patent: 5966672 (1999-10-01), Knupp
patent: 6204856 (2001-03-01), Wood et al.
patent: 6313838 (2001-11-01), Deering

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