Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Computer graphics system having per pixel fog blending










Image Number 2 for United States Patent #6437781.

A computer graphics system includes an apparatus for fog blending colors to be displayed on a graphics display of the computer graphics system. The computer graphics system includes a rendering parameter calculation unit responsive to data of a primitive, that determines a cooked exponent value and a color value for at least one pixel of the primitive. In addition, the system includes a fog unit responsive to the cooked exponent value for each pixel of the primitive, that determines a fog blending factor for each pixel of the primitive, wherein the fog blending factor is one of an exponential fog blending factor and an exponential-squared fog blending factor. Further, the system includes a fog blending unit responsive to the color value and the fog blending factor for each pixel of the primitive and also to a fog color value, that blends the fog color value with the color value for each pixel of the primitive according to the fog blending factor for the respective pixel, and that provides a fogged color value for each pixel of the primitive. In addition, the computer graphics system may include a first interpolator, responsive to the color value and the cooked exponent value for at least one pixel of the primitive, that determines the color value and the cooked exponent value along an edge of the primitive so as to provide the cooked exponent value and the color value for each pixel of the edge of the primitive. Further, the computer graphics system may also include a second interpolator, responsive to the cooked exponent value and the color value for each pixel of the edge of the primitive, that determines the cooked exponent value and the color value along a span of the primitive so as to provide the cooked exponent value and the color value for each pixel of the span of the primitive. In this way, the system provides fast and accurate exponential and exponential-squared fog blending of the color values of the primitive without a lot of hardware.








 
 
  Recently Added Patents
Hot-press cushion material and manufacturing method of the same
Portion of a display panel with an unhappy facial expression icon
Upper surface of a skateboard deck
Selecting from a plural of energy saving modes
Tool box
Radiation-curable ink composition, ink jet recording method, and recorded matter
Matching a usage history to a new cloud
  Randomly Featured Patents
Electrical device, such as a plug or a connector, with nameplate having adhesive and mechanical securement
Films and articles with good taste and/or odor performance
Multi-dimensional apparatus for mounting laboratory and experimenting equipment and/or for additionally mounting optical elements
Using distributed information about lock conversion requests to efficiently manage lock state transitions
Disc drive apparatus
Heatsink with multiple fin types
Composition, energy storage device, and related processes
Computer graphics pixel processing system
Method and device for continuous dyeing of warp ends
Snap fastener