An Efficient Representation for Irradiance Environment Maps
irradiance environment map texture takes O(T · S) time, where T is the number of texels in the irradiance environment map. Our method will therefore be approximately T/9 times faster1.Evenif a conventional irradiance environment map is computed at a very low resolution of 64×64, corresponding to T = 4096, our method will be nearly 500 times ...
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