Ati Technologies Inc.

Terarecon, Inc.

Jay C Wilkinson

Stephen L Morein

Hanspeter Pfister

Laurent Lefebvre

Hugh C Lauer

James M Knittel

Takahide Ohkami

Christopher J Kappler

Kenneth W Correll

Jan C Hardenbergh

William R Peet

Stephen R Burgess

Stephen F Mason

Beverly J Schultz

A method for rendering an object including receiving a pixel tile representing a portion of a primitive to be rendered, determining attributes of a reference pixel within the pixel tile, and determining the attributes of neighboring pixels within the pixel tile based on barycentric differences relative to the reference pixel is disclosed. A circuit for calculating at least one attribute of an object to be rendered includes an initial calculation circuit providing full precision reference pixel attribute data in response to a pixel tile that defines at least a portion of the object; and a derivative circuit, operatively coupled to the initial calculation circuit, providing reduced precision neighboring pixel attribute data in response to the pixel tile. The derivative circuit includes a plurality of pixel attribute sub-circuits or components, which determine the attribute values of neighboring pixels within the pixel tile at a precision less than that of the precision used to define the reference pixel.

Pixel delta interpolation method and apparatus

A volume rendering integrated circuit includes a plurality of interconnected pipelines having stages operating in parallel. The stages of the pipelines are interconnected in a ring, with data being passed in only one direction around the ring. The volume integrated circuit also includes a render controller for controlling the flow of volume data to and from the pipelines and for controlling rendering operations of the pipelines. The integrated circuit may further include interfaces for coupling the integrated circuit to various storage devices and to a host computer.

Volume rendering integrated circuit

Growing community of inventors

Newton, MA, United States of America

Jay C Wilkinson