公开(公告)号：CA2307352A1

公开(公告)日：2000-12-30

申请号：CA2307352

申请日：2000-05-01

Applicant: IBM

Inventor： WHITE GEORGE L JR ,  JOHNS CHARLES R ,  MINOR BARRY L ,  CHELSTOWSKI ILIESE CLAIRE

IPC: G06T7/20 ,  G06T13/20 ,  G09G5/38 ,  G06T15/70 ,  G06F17/50

Abstract: A system, method, and computer-usable medium for simulating object blur uses motion vectors. A motion vector, or array of motion vectors, may be specified on either a per-vertex or per-primitive (i.e. per-object) basis. A motion vector is opposite to the direction of the motion, and thus points in the direction of the blur. The magnitude of the motion vector represents the distance the vertex or the primitive (i.e. each vertex in the primitive) travels in one unit of time. When a scene is rendered, only those objects which are in motion, or which are subject to depth of field blurring, are rendered over a series of time slices. All objects which are static (i.e. nonmoving) are rendered directly into a color buffer, rather than being repeatedly rendered over a series of time slices. Thus, static (i.e. non-blurred) objects are rendered only once, while objects which are to be blurred are rendered over a series of time slices.