System, method and article of manufacture for shadow mapping

Details System, method and article of manufacture for shadow mapping System, method and article of manufacture for shadow mapping

2006-10-10

2006-10-10

Jankus, Almis R. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

Reexamination Certificate

active

07119806

ABSTRACT:
A system, method and article of manufacture are provided for shadow mapping while rendering a primitive in a graphics pipeline. Initially, an offset operation is performed in order to generate a depth value while rendering a primitive. Further, a value of a slope associated with an edge of the primitive is identified. Thereafter, the depth value is conditionally clamped based on the value of the slope.

REFERENCES:
Whitted, An Improved Illumination Model for Shaded Display, ACM, 1980, pp. 343-349.
Woo et al., “OpenGL Programming Guide” pp. 211-218, 250-253, 422, 583-591, 1999.

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