Method for establishing weighting factors for color calculation of chrominance value of texture element for graphics system, involves determining texture element of texture-element

摘要

A method for establishing the weighting factors for color computation of a chrominance value of a texture elements for a footprint i.e. the perspective projection of a picture element or pixel on a curved surface, which covers a number of texture elements in a texture-element lattice or grid, in a graphics system. Initially (a) the form/shape information (vi) of the footprint is determined and the edges (si) of the footprint are (b) then determined, followed by (c) approximating the edges (si) as determined in step (b) by a step function. The texture element of the texture-element grid/raster is then (d) determined and the weighting factor (w'tex,w'prop) is then determined (e) for each texture element that contains a section of the step function, independent of the part surface covered by the footprint for the respective texture element.