Nxp B.v.

Koninklijke Philips Corporation N.v.

Entropic Communications, Inc.

St-ericsson Sa, En Liquidation

Kornelis Meinds

Bart Gerard Bernard Barenbrug

Bart G B Barenbrug

Bartolomeus W D Van Geest

Therefore, a computer graphics processor with a forward mapping renderer is provided. The renderer comprises a texture space rasterizer (TS) for rasterizing a primitive in texture space, a color generating unit (PS) for determining the color of the output of the texture space rasterizer (TS) and for forwarding a color sample along with coordinates, a 2 pass screen space resampler (SSR, SSR) for resampling the color sample determined by the color generating unit (PS), and at least one one-dimensional blur filter unit (1PB, 2PB) associated to at least one pass of said screen space resampler (SSR, SSR) for performing a one-dimensional filtering before performing said at least one pass.

Computer graphics processor and method of rendering images

An apparatus for mapping primitives of a 3D graphics model from a texture space to a screen space. The apparatus includes a texture memory for storing texture maps. A resampler resamples, for each primitive, data from a texture map that corresponds to the primitive to corresponding pixel data defining a portion of a display image that corresponds to the primitive. The texture space resampler and/or the screen space resampler is operative to select a resampling algorithm for performing the resampling from a respective set of at least two distinct resampling algorithms. The selection is done in dependence on a size of the primitive.

System for adaptive resampling in texture mapping

A computer graphics processor is described comprising a model information providing unit () for providing information representing a set of graphics primitives, a rasterizer () capable of generating a first sequence of coordinates which coincide with a base grid associated with the primitive, a color generator () for assigning a color to said first sequence of coordinates, and a display space resampler () for resampling the color assigned by the color generator in the base grid for coordinates u,v to a representation in a grid associated with a display with coordinates x,y, in a first and a second transformation. The transformation is carried out in a first and a second pass, and optionally includes a transposition. The order of the passes and the decision to apply a transposition or not is based on an evaluation of the partial derivatives formula (I) two of which determine shear and two of which determine scaling in the transformations. The option is selected wherein relatively large derivatives occur as scale factors, and relatively small derivatives occur as shear factors and wherein the lowest amount of shear occurs during the second transformation.

Computer graphics processor and method for generating a computer graphics image

A polygon that is made visible in an image. A selection is made between a first and second algorithm for computing a visual effect of the polygon. The first algorithm computes an update value for the polygon and pixel values for spatially successive pixels in the polygon by successively updating the pixel values using the update value. The second algorithm computes the pixel values for each pixel in the polygon individually, without said updating, the first algorithm being selected if the size of the polygon exceeds a threshold, the second algorithm being selected if the polygon size does not exceed the threshold.

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Eindhoven, Netherlands

Kornelis Meinds