1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#include "node_ramp_util.h"
#include "stdcycles.h"
shader node_rgb_curves(color ramp[] = {0.0},
float min_x = 0.0,
float max_x = 1.0,
int extrapolate = 1,
color ColorIn = 0.0,
float Fac = 0.0,
output color ColorOut = 0.0)
{
color c = (ColorIn - color(min_x, min_x, min_x)) / (max_x - min_x);
color r = rgb_ramp_lookup(ramp, c[0], 1, extrapolate);
color g = rgb_ramp_lookup(ramp, c[1], 1, extrapolate);
color b = rgb_ramp_lookup(ramp, c[2], 1, extrapolate);
ColorOut[0] = r[0];
ColorOut[1] = g[1];
ColorOut[2] = b[2];
ColorOut = mix(ColorIn, ColorOut, Fac);
}
|
