Vector Bias

Returns a curved bias of Input by Bias, using the following Ken Perlin formula: pow(Input, log(Bias)/log(0.5))
Bias components should be in the range between 0.0 and 1.0

Every Input vector component is using the matching component of the Bias vector to finally result in the output vector.

This function will lead to a reduction of the color component values that have a mid-range brightness, especially if set to values of less than 0.5. Bias values greater than 0.5 will brighten the color component values with mid-range intensity correspondingly. Color components that are already very dark or bright will be less affected. A Bias value of 0.5 will result in no changes to the colors that are input.