Calculates the dot product between two vectors. A dot product takes the the magnitude and direction of two vectors and returns a new single vector. The dot product of vectors at 90 degrees to one another is zero. Often used for effects like fresnel/curvature or "electron microscope" type images.
The first vector in the dot product calculation.
The second vector in the dot product calculation.
The single-component (float) value produced by the dot product of the two input vectors.