9cfc7967dd
* Replace license text in headers with SPDX identifiers. * Remove specific license info from outdated readme.txt, instead leave details to the source files. * Add list of SPDX license identifiers used, and corresponding license texts. * Update copyright dates while we're at it. Ref D14069, T95597
50 lines
943 B
Plaintext
50 lines
943 B
Plaintext
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#include "stdcycles.h"
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/* Checker */
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float checker(point ip)
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{
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point p;
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p[0] = (ip[0] + 0.000001) * 0.999999;
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p[1] = (ip[1] + 0.000001) * 0.999999;
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p[2] = (ip[2] + 0.000001) * 0.999999;
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int xi = (int)fabs(floor(p[0]));
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int yi = (int)fabs(floor(p[1]));
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int zi = (int)fabs(floor(p[2]));
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if ((xi % 2 == yi % 2) == (zi % 2)) {
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return 1.0;
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}
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else {
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return 0.0;
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}
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}
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shader node_checker_texture(
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int use_mapping = 0,
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matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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float Scale = 5.0,
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point Vector = P,
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color Color1 = 0.8,
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color Color2 = 0.2,
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output float Fac = 0.0,
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output color Color = 0.0)
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{
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point p = Vector;
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if (use_mapping)
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p = transform(mapping, p);
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Fac = checker(p * Scale);
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if (Fac == 1.0) {
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Color = Color1;
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}
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else {
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Color = Color2;
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}
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}
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