b1488b41_1_2013__18_Texturing_component__Description
[Mode] "NEAREST_PIXEL_AVG_MIPMAP" [Description] 
Choose the two mipmaps that most closely match the size of the pixel being textured and use the texture element nearest to the center of the pixel to produce a texture value from each mipmap. The final texture value is a weighted average of those two values.
Extensible 3D (X3D), ISO/IEC 19775-1:2013, 18 Texturing component
Description