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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#include "stdcycles.h"
shader node_voxel_texture(string filename = "",
string interpolation = "linear",
int use_mapping = 0,
matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
point Vector = P,
output float Density = 0,
output color Color = 0)
{
point p = Vector;
if (use_mapping) {
p = transform(mapping, p);
}
else {
p = transform("object", Vector);
matrix tfm;
if (getattribute("geom:generated_transform", tfm))
p = transform(tfm, p);
}
if (p[0] < 0.0 || p[1] < 0.0 || p[2] < 0.0 || p[0] > 1.0 || p[1] > 1.0 || p[2] > 1.0) {
Density = 0;
Color = color(0, 0, 0);
}
else {
Color = (color)texture3d(
filename, p, "wrap", "periodic", "interp", interpolation, "alpha", Density);
}
}
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