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Senbei

(I guess)Uv in this slide is not the UV value between 0 and 1. They are uv multiplied with texture size.

sccao

Why log2?

Max

Each mip level reduces the length in u & v by a factor of 2, so we take log2(L) to find the level where L*L image pixels correspond to 1 mipmap pixel.

SnackMixer

Are there any other effective way that we can calculate the level value for interpolation?