rbfInverseMultiQuadraticPhrase

Represents the implementation of the inverse multiquadratic radial basis function (RBF) in shader language. This constant holds the shader source code for calculating the inverse multiquadratic RBF given a squared distance and a scale factor.

The function defined within this shader code computes the RBF as: 1.0 / sqrt(1.0 + sqrDistance * scale * scale)