mx_burn_float.osl

// Open Shading Language : Copyright (c) 2009-2017 Sony Pictures Imageworks Inc., et al.
// https://github.com/imageworks/OpenShadingLanguage/blob/master/LICENSE
//
// MaterialX specification (c) 2017 Lucasfilm Ltd.
// http://www.materialx.org/

#include "mx_funcs.h"

shader mx_burn_float
    [[ string help = "Float"" Take two 1-4 channel inputs and apply the same operator to all channels: 1-(1-B)/F" ]]
  (
    float fg = 0,
    float bg = 0,
    output float out = 0
  )
{
    out = 1 - ((1 - bg) / fg); 
}