forked from bartvdbraak/blender
58 lines
1.7 KiB
Plaintext
58 lines
1.7 KiB
Plaintext
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "stdosl.h"
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shader node_hair_bsdf(
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color Color = 0.8,
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string component = "Reflection",
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float Offset = 0.0,
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float RoughnessU = 0.1,
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float RoughnessV = 1.0,
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normal Normal = Ng,
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output closure color BSDF = 0)
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{
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float IsStrand;
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float roughnessh = clamp(RoughnessU, 0.001, 1.0);
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float roughnessv = clamp(RoughnessV, 0.001, 1.0);
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getattribute("geom:is_curve", IsStrand);
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if (!IsStrand) {
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if (backfacing()) {
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BSDF = transparent();
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}
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else {
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if (component == "Reflection")
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BSDF = Color * hair_reflection(Normal, roughnessh, roughnessv, normalize(dPdv), 0.0);
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else
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BSDF = Color * hair_transmission(Normal, roughnessh, roughnessv, normalize(dPdv), 0.0);
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}
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}
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else {
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if (backfacing()) {
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BSDF = transparent();
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}
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else {
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if (component == "Reflection")
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BSDF = Color * hair_reflection(Normal, roughnessh, roughnessv, dPdu, -Offset);
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else
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BSDF = Color * hair_transmission(Normal, roughnessh, roughnessv, dPdu, -Offset);
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}
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}
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}
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