intern/cycles/kernel/osl/shaders/node_float_curve.osl


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/* SPDX-License-Identifier: Apache-2.0
 * Copyright 2011-2022 Blender Foundation */

#include "node_ramp_util.h"
#include "stdcycles.h"

shader node_float_curve(float ramp[] = {0.0},
                        float min_x = 0.0,
                        float max_x = 1.0,
                        int extrapolate = 1,

                        float ValueIn = 0.0,
                        float Factor = 0.0,
                        output float ValueOut = 0.0)
{
  float c = (ValueIn - min_x) / (max_x - min_x);

  ValueOut = rgb_ramp_lookup(ramp, c, 1, extrapolate);

  ValueOut = mix(ValueIn, ValueOut, Factor);
}