(I guess)Uv in this slide is not the UV value between 0 and 1. They are uv multiplied with texture size.
Why log2?
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.
Are there any other effective way that we can calculate the level value for interpolation?
(I guess)Uv in this slide is not the UV value between 0 and 1. They are uv multiplied with texture size.
Why log2?
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.
Are there any other effective way that we can calculate the level value for interpolation?