1. Computer graphics processor, having a forward mapping renderer, comprising: a texture space rasterizer for rasterizing a primitive in texture space, a color generating unit for determining the color of the output of the texture space rasterizer and for forwarding a color sample along with coordinates, a 2-pass screen space resampler for resampling the color sample determined by the color generating unit, and at least one one-dimensional blur filter unit associated to at least one pass of said screen space resampler for performing a one-dimensional blur filtering before performing said at least one pass.