Patent ID: 7710416
Filing Date: 2010-05-04
Classification: G06T

Abstract:
1. A method for rendering a volumetric obscurant in a computer generated graphical image with a computer graphics device, comprising the steps of: defining a single polygon template as a volumetric obscurant comprising pixels and sub-pixels; spreading the sub-pixels in depth using the computer graphics device for pixels in the single polygon template, wherein spreading comprises offsetting a depth of sub-pixels within the pixels from a depth of the related pixel in the single polygon template relative to an eye point to create a non-zero thickness for the single polygon template having a first surface and a second surface separated by the non-zero thickness to represent the volumetric obscurant; and modulating a density of the sub-pixels using the computer graphics device to vary the distances between the sub-pixels for the single polygon template to enable an object passing through the single polygon template to be occluded on a sub-pixel basis as the object passes through the single polygon template.