Patent ID: 7324107
Filing Date: 2008-01-29
Classification: G06T

Abstract:
1. A method of reducing the number of texture cache cycles while performing anisotropic mip-mapping, comprising: mapping a target pixel needing texture to one or more texels in a higher resolution texture array, a region of support in the higher resolution texture array being defined by a long and a short axis and being generally elliptical and a level of detail being derived only from the short axis; and performing a filtering function along an axis using the texels from the higher resolution texture array to simulate a filtering effect of using texels from the higher resolution texture array and a second texel array having a lower resolution, wherein only one level of texture level is stored and used to generate the lower resolution texture array, wherein simulating the filtering effect reduces the number of cache memory cycles associated with the filtering function, wherein the step of performing a filtering function further comprises: using the texels from the higher resolution texture array to derive texels of the lower resolution texture array, interpolating the texels from the higher resolution texture array to form a first blended texel, interpolating the texels from the lower resolution texel array to form a second blended texel, wherein the sum of a first product, m*T interpolating the first blended and second blended texels to arrive at a texture for the target pixel.