Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2011-04-12
2011-04-12
Broome, Said (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S419000, C345S420000
Reexamination Certificate
active
07924281
ABSTRACT:
A graphics processing circuit includes a pixel shader operative to provide pixel color information in response to image data representing a scene to be rendered; a texture circuit, coupled to the pixel shader, operative to determine a luminance value to be applied to a pixel of interest based on the luminance values of the pixels that define a plane including the pixel of interest; and a render back end circuit, coupled to the texture circuit, operative to compute the luminance values from a shadow map that specifies the distance from the light source of the nearest object at a plurality of locations. A pixel illumination method includes receiving color information for a pixel to be rendered, defining a plane containing at least one pixel of interest, the plane including a plurality of planar values; comparing the plurality of planar values to a corresponding set of distance values; determining a luminance value for the at least one pixel of interest; and applying the luminance value to the at least one pixel of interest.
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Doggett Michael
Houle Jocelyn
Morein Stephen L.
Seiler Larry D.
ATI Technologies ULC
Broome Said
Vedder Price P.C.
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