Texture minification filter that chooses two mipmaps that most closely match the size of the pixel being textured,
finds within each mipmap the weighted average of the nearest texel to the center of the pixel, then returns the
weighted average of those two values.
Texture minification filter that chooses two mipmaps that most closely match the size of the pixel being textured, finds within each mipmap the weighted average of the nearest texel to the center of the pixel, then returns the weighted average of those two values.